SU1149027A2 - Ventilation door for controlling air flow - Google Patents

Abstract

VENTILATION DOOR FOR REGULATION OF THE AIR FLOW in auth.St. No. 939781, characterized in that, in order to increase the accuracy and quality of the air flow regulation process, it is equipped with additional flaps hinged on the flaps of the ventilation window perpendicular to the plane of the door and directed in different directions, as well as guides fixed to the upper parts of the frame of the ventilation window and made in the form of an arc of a circle, in addition, additional flaps are provided with rollers and are mounted so that they can be moved along directions, and the ends of additional rock coupled with loads of ...

Description

The invention relates to mining and can be used to control the flow of air in dispatching and automatic control systems for airing mines and mines.

According to the main auth. No. 939781 is a known ventilation door for adjusting the air flow, comprising a door unit for passing an intra shaft rail vehicle, a double wing valve. A window for controlling the flow of air and the passage of people and the drives of the transport door and vent window flaps. The drive of the vents of the ventilation window is provided with a cam, driving gear, which is interoperable with the doors by means of an intermediate gear and sectors, with a weight connected with the doors of the door by means of levers and a rope and a worm wheel with a stop mounted on the output shaft of the drive with the ability to interact with cam tightly connected to the pinion gear flJ.

The known invention allows the tambour to be refused for people to pass through and to allow people to pass through the vent window.

However, the double vent window has a non-linear flow characteristic in the air and ensures that more than 50% of the maximum air flow is omitted when the flaps are opened by 10 and about 80% of the maximum air flow when the flaps are opened by 20-30 A further turn of the flaps by 60 to full opening gives an increase air flow rate in the mountain area is approximately 20%. Such a flow characteristic of the regulator requires complication of the control circuit and drive of the ventilator window flaps and makes it difficult to control air flow at low angles of the flaps.

The purpose of the invention is to increase the accuracy and quality of the air flow control process.

The goal is achieved by the fact that the ventilation door for adjusting the air flow is provided with additional flaps hinged to the flaps of the ventilation window perpendicular to the plane two 490 271

and directed in different directions, as well as guides fixed to the upper part of the frame of the ventilation window and made in the form. 5 arcs of a circle; in addition, additional flaps are fitted with shelves and mounted for movement along guides, with the ends of the additional flaps being connected to the weights.

FIG. 1 shows the proposed device, a general view of FIG. 2 ventilation window, top view; in fig. 3-4 - flow sections

5 a ventilation window at the same angle of rotation of the flaps of the known and proposed devices, respectively; in fig. 5 shows the flow characteristics of a known and proposed vent window.

The mine ventilation door includes a door block 1 for the passage of locomotive transport with a drive 2 and a ventilation window 3 sec.

5 by an actuator 4. In the frame 5 of the vent window there are two flaps 6 installed, opening in opposite directions, to the ends of which additional flaps 7 are hingedly attached.

g similar sizes. On top

opposite to the hinge connections, the ends of the additional flaps 7 are fixed to the rollers 8, moving in guides 9 made in the shape of an arc of a circle and fixed on the frame 5, these same ends of the additional flaps 7 are connected by flexible cables 10 through blocks 11 and 12 to the cargo 13 for closing.

 The vent door works as follows.

If necessary, adjust the flow of air in the mine workings. a command is issued to turn on the drive 4. In accordance with the duration of the control command, the flaps 6 are rotated at a certain angle, and the additional flaps 7 are moved parallel to themselves, and the air flow area will be determined by size S (Fig. 4) rather than size S (Fig. 3), as in the known device.

The results of the aerodynamic 5 tests of the proposed and

known devices built them. consumption characteristics (respectively) curves 14, 15, FIG. five). Ras31

The characteristic of the proposed device is almost linear when opening the valves from 0 to 80, which compares favorably with the consumption characteristics of the known device.

The use of the proposed design of the ventilation window will improve the quality of redistribution

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air and ensure smooth control of air flow in mine workings when the valves are opened and zakrganii with a constant 5 speed of their rotation, which, when properly selected drive parameters, will exclude the possibility of methane bursts during f)

Claims (1)

VENTILATION DOOR FOR REGULATION OF AIR FLOW by ed. No. 939781, characterized in that, in order to improve the accuracy and quality of the process of regulating air flow, it is equipped with additional flaps hinged on the flaps of the ventilation window perpendicular to the plane of the door and directed in different directions, as well as guides mounted on the upper part of the ventilation frame windows and made in the form of an arc of a circle, while the additional leaves are equipped with rollers and mounted to move along the guides, and the ends of the additional wings ineny with <cargoes. to SLLdnll 49027>