DD148378A1 - DEVICE FOR LOCKING GASFOERMIGER STROEME IN SQUARE CHANNELS - Google Patents

Abstract

The invention relates to a device for shutting off gaseous streams in square channels, preferably of draft and Abluftkanaelen in ventilation systems. The object of the invention is to arrange kinematic movement members on the flap 7 in such a way that a uniform contact and pressure against the sealing frame 2 is made possible, wherein the applied pressure is to be utilized as the pressing force. In this case, one or more actuators of the kinematic movement system are formed so that they can perform a limited spatial movement perpendicular to this axis of rotation and the flap 7 can adapt to the sealing frame 2.

Description

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Title of the invention

Device for shutting off gaseous streams in angular channels

Field of application of the invention

The invention relates to a device for shutting off gaseous streams in angular channels, preferably of supply air and exhaust air ducts ventilation systems.

Characteristic of the known technical solutions

Known devices, as described in DD-PS 32090, are equipped with one or more flaps, flat or profiled, which are arranged the same or opposite directions transverse to the flow direction. Most known constructions have flap plates which are fixedly connected to axles which are rotatably mounted in the channel walls. With increased demands on the tightness, the seal is made by plastic sealing material which is attached to the flap edges and / or on a arranged on the channel walls sealing frame. The described embodiment has the disadvantage, above all for increased tightness requirements, that the sealing surfaces have to be adjusted relatively precisely due to the rigid mounting of the flaps in the channel walls by means of sliding or ball bearings.

The flaps must be made relatively accurate, which is associated with preferably to be used thin frame with great effort. The force for the seal is relatively large.

Object of the invention

The aim of the invention is to eliminate the aforementioned manufacturing disadvantages while reducing the sealing force.

Explanation of the essence of the invention

The object of the invention is to provide a device for shutting off gaseous streams in polygonal channels, in which a uniform support and contact pressure on the sealing frame is made possible by kinematic movement members of the flap, wherein as the contact force of the upcoming static pressure is exploited.

According to the invention, this object is achieved by a device having a cantilevered flap, which is confirmed by a kinematic motion system having an off-center axis and actuators between the axis and the flap. In this case, the adjusting lever is arranged on the flap, that the attachment point is outside the center of gravity and their sealing on a circumferential wall of the channel wall, arranged at an angle 90 to the flow direction frame, wherein the frame and / or the flap are provided with a sealing material , The free storage is achieved in that the flap is connected to the / the actuators of the kinematic movement system via a joint with radial movement and / or pivot pin and this attachment (s) in addition to the pressure movement still a limited spatial, perpendicular to the axis of rotation, directed movement allows (leave).

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The free storage can be realized by various embodiments.

This solution according to the invention has the advantage that a good seal at a lower accuracy of manufacture of the flap and the sealing frame and adjustment of the same can be realized, at the same time existing in the duct line pressure during operation of the system for uniform contact pressure of the flap is used on the sealing frame ,

embodiment

The invention will be explained with reference to two exemplary embodiments. In the accompanying drawings represent

FIG. 1: Cross-sectional view with fulcrum bearing on adjusting axis

Figure 2: cross-sectional view with bolt as a moving member

In Figure i, a frame (2) is arranged on the channel piece (1), on which a profiled sealing rubber (3) is attached. The adjusting shaft (4) is located off-center at a prescribed distance parallel to the frame (2). On the adjusting shaft (4) fixedly connected are two adjusting levers (5) whose attachment point is above the center of gravity S of the flap (7), via the slots (6), the flap (7) with bolts (8) is attached. At the flap (7) are in the amount of the adjusting axis (4) brackets (9) "which rest freely with the flap (7) on the adjusting axis (4). During the rotational movement of the adjusting axis (4) in the opening direction takes place by the short lever arm (OK), the pressure relief, which causes a lifting of the flap (7) on one side and the flap (7) applies to the adjusting axis (4). With the further rotation of the long lever arm (Ii) acts on the lifting movement of the flap (7) to the horizontal position of the same, which is limited by stops (12).

The closing operation can be carried out by the static pressure of the flow in conjunction with the gravity of the flap (7) and / or supported by external forces.

In Figure 2 is located in the channel cross section, a frame (2) which is arranged at an angle 90 ° to the flow direction. The flap (7) is provided with sealing material (3) made of soft rubber profile. The attachment is made with mutually attached, in the axial direction of the channel (1) displaceable bolt (13) in holders (14) which are attached to the channel wall (1). The actuation of the flap (7) is effected by the drive shaft (15) on which two or more levers (16) are arranged, depending on the size of the flap (7) The levers (16) are provided with a slot (17) the bolt (7) is articulated by bolts (18).

During the opening process, the levers (16) are moved counterclockwise and the flap (7) is first raised ara lower end. Upon further opening slide the bolt (18) in the slots (17) of the lever (16 (up to the end, whereby the end position of the flap (7), parallel to the duct ceiling, is reached.

Claims (3)

invention claim Device for shutting off gaseous streams in square ducts, preferably air supply and exhaust ducts of ventilation systems, having a flap actuated by a kinematic system of motion having an eccentric axis and actuator / he глѵіэсііеп the axis and the flap and Such an arrangement of an actuating lever or a plurality of levers to the flap, that the Bef estigungsigungsbun the same is outside the center of gravity and the seal is carried out on a circumferential wall of the channel wall, arranged at an angle 90 to the flow direction frame , wherein the frame and / or the flap a sealing material are provided, characterized in that one or more actuators of the kinematic motion system in addition to the rotational movement can perform a limited spatial movement perpendicular to this axis of rotation and the flap (7) can adapt to the sealing frame (2) and in the channel strand (1 ) by the Str During the operation of the system, the static pressure generated during the operation of the system presses the flap (7) evenly against the sealing frame (2). 2. Device according to item I _1, characterized in that the flap (7) is profiled flat or on its surface. 3. Device according to item 1, characterized in that the center of gravity (S) of the flap (7) below the attachment point of the lever (5). For this. 2 pages drawings