DE2554713A1 - Valve spindle setting plate - interlocks with adjacent valve plates for selective or sequential pipe line operation - Google Patents

Abstract

The laterally-aligned valve spindles each carry a circular plate. Each plate is edge contoured so that it meshes with adjacent plates in predetermined order. A stop in within a concentric slot limits plate and spindle rotation. Only one valve becomes operable at each 90 deg. rotation, when the pin moves to the other end of the slot. Interference pitched plates (11, 12) on respective valve (1, 2) spindles (9, 10) counter lock on concave arcs and against stop pins (15, 16) in the plate slots (17, 18). One locked valve (1) becomes unlocked after the other valve (2) is rotated. In a multi-valve alignment, each valve is controlled by the plates on either side. Edge contouring may undulate, combined with longer slotting, for two settings over a larger angular movement.

Description

Bayer Aktiengesellschaft 2554713

Central Patent Department «, Trademarks Λ and licenses

SOO Leverkusen. Bayerwerk

Kr / Va

Device for locking shut-off devices

The invention relates to a device consisting of shut-off devices for locking them in predetermined switching positions of individual one-way shut-off devices, in particular ball valves, arranged next to one another, each with one over a maximum of "560 ° functioning rotatable drive axle.

In practice, fluids, even in traces, are often allowed in front of the actual reaction do not come into contact with each other, therefore inevitable multi-way valves are not suitable for that applies particularly to the merging of gases with different pressures. Instead, there are one-way shut-off devices in the lines up to the reaction chamber, which are then mutually interlocked to avoid switching errors.

This can be done by means of a key switch, whereby the next shut-off device is only activated after the previous circuit removable key can be operated. Removing and inserting the key is cumbersome. A desired inevitable sequence of the circuits is only difficult to see. The system is complex and prone to failure.

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Another possibility for locking shut-off devices is to place a gate or a camshaft across the To arrange drive axles that sequentially releases the individual shut-off devices.

These devices generally require high precision. Expansion is difficult. The space requirement is large. Of the Construction costs and maintenance are high.

The invention is based on the object of finding a device that provides an exact, adjustable locking of adjacent manually operated one-way shut-off devices by stringing together individual replaceable and space-saving elements with good Signaling of the switch positions enables.

According to the invention, this object is achieved in that adjacent shut-off devices are located on the drive axles arranged in parallel coaxial circular disks, some of which overlap up to an angle of 75 °, are attached in one plane are, wherein each of the discs has at least in the locking position a recess into which an adjacent Disc is rotatable for locking.

The advantage of the device according to the invention is that only one disk can be rotated at the same time through the recess of the other disk, the latter being locked exactly in a switch position of the closure once it has been set. Furthermore, the circuit can be expanded without difficulty by adding simple units of shut-off devices with a disk, since there is no continuous switching element. The locking can also be easily adapted to new operating conditions by turning the disks towards the drive axle or by exchanging them with other prefabricated disks. The signaling of the position of the discs facilitates operation. The structure is simple, robust and easy to maintain. The space requirement is low and can therefore also be used in confined spaces.

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According to a special embodiment of the device according to the invention, there is a recess on the circumference of the disk, the middle area of which consists of an arc of a circle with a radius equal to the difference between the distance between the drive axes minus the radius of the engaging disk and its side areas through a tangentially adjoining but oppositely curved one Circular arcs are also limited with the radius of the engaging disc.

In the case of several shut-off devices connected in series , the enlarged recess allows the locking to be canceled in a given area. This can be useful for certain operations.

According to a further embodiment, a circular slot is arranged in the disc at a certain distance from the drive axis, in which a stop pin attached to the housing of the shut-off element is located.

The switching range of the shut-off element is limited by the stop pin in the slot, which is useful, for example, with ball valves because of the opening angle of 90 °.

An embodiment of the invention is in the drawings and is described in more detail below. Show it:

Figure 1 switching positions of four ball valves Figure 2 plan view of two ball valves

In Figure 1, the possible switching sequences of _y four ball valves including the locking options are shown systematically, the third shut-off device is only locked in a certain area and can be set as desired outside of this area. The arrows indicate the flow of material.

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In Figure 2, two parallel one-way shut-off devices 1, 2 are shown in a plan view, each of which consists of a Housing 3, 4 with inlet connection 5, 6 as well as drain connection 7, 8 and the closure including drive shaft 9, 10 with attached, screwed washer 11,12 as well as the manual operating lever IJ, 14 exist. A pin 15 * 16 attached to the housing 1, 2 in the circular Slot 17 * 18 limits the deflection. The left shut-off device 1 is closed and is locked via disk 12 by disk 11 until the shut-off device 2 closes is.

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Claims (2)

Patent claims: \ ly Device on shut-off elements ^ for their locking in predetermined switching positions, consisting of individual one-way shut-off elements arranged next to one another, in particular ball valves, each with a rotatably mounted drive shaft that functions over a maximum of J60 °, characterized in that the drive shafts (9, 10) arranged in parallel each adjacent shut-off devices (1,2) coaxial circular, partially overlapping up to an angle of 75 ° disks (11,12) are attached in a plane, each of the disks (11,12) at least in the locking position of the associated one-way The shut-off element has a recess into which an adjacent disk can be rotated for locking. 2. Apparatus according to claim 1, characterized in that there is a recess on the circumference of the disc (11) whose middle area from an arc of a circle with a radius equal to the difference from the distance between the drive axes (9,10) minus the radius of the engaging disc (12) and its side areas by a tangentially adjoining, but opposite curved circular arc with also the radius of the intervening Disc (12) are limited. J. Device according to Claims 1 and 2, characterized in that that in the disc (11,12) at a certain distance from the drive axis (9 * 10) a circular slot (17,18) is arranged in which a on the housing (3, 4) of the shut-off element attached stop pin (15,16) is located. Le A 16 867 - 5 - 7 0 9 8 2 3/0184 ^0F »G'NAL JNSPECTSD