SU1229490A1 - Wicket gate - Google Patents

Description

one

The invention relates to stop valves and can be used to shut off flows of bulk materials.

The purpose of the invention is to reduce the wear of the sealing surfaces F to increase the reliability of blocking the flow area during transportation of working fluids by eliminating loose materials (solid particles) between the sealing surfaces of the closure member and the seat when the shutter closes.

Figure 1 shows the butterfly valve in the Open position, the section; in Fig.2, section A-A in Fig.1.

The rotary shutter includes a housing 1 with an input 2 and output 3 channels. In the output channel 3, a forcibly movable saddle 4 is installed, overlapped by the rotary hollow locking member 5 with the inlet 6 and the outlet 7 windows. In the cavity of the shutoff valve 5, there is a connecting pipe 8, fixedly mounted in the housing coaxially with its channels.

Between the pipe 8 and the inlet 2 and the outlet 3 channels of the housing 1 there is a gap to move the locking member 5 therein. The size of the outlet window 7 of the locking member 5 in cross section perpendicular to the axis of rotation is larger than the size of the input window 6 by an amount equal to or greater than the size of the input channel 2 housing 1.

Ag /

2294902

The locking body 5 is equipped with a drive 9, and the seat 4 - a piston drive 10.

In the open position of the locking organ 5 loose medium through the input

g channel 2, fixed pipe 8

enters the output channel 3 of housing 1 and d, and then to the consumer. In this case, in view of the fact that the bore sections at the interfaces of the bore bores of the housing 1, the locking member 5 and the fixed fitting 8 increase stepwise in the exit direction (from top to bottom), the loose material particles do not fall on the sealing surfaces.

In order to move the valve to the closed position, the actuator 9 rotates the locking member 5 clockwise. At the same time, the input channel first overlaps

20 2 of the housing 1, as a result of which the transportation of the flowing medium through the fixed pipe 8 and the output channel 3 stops.

Upon further rotation of the locking body 5 also closes the hole of the saddle 4, after which the saddle 4

30 is forced by the actuator 10; to the surface of the locking organ. five.

The opening of the shutter occurs when the actuator rotates the locking member 5 in the clockwise direction.

Compiled by G. Ivanov. Editor N. Dankulich Tehred V. Kadar ° RR ° ° .1,

Order 2437/35 Circulation 880 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production

printing enterprise, Uzhgorod, st. Project, 4

Claims (1)

A ROTARY LATER, comprising a housing with inlet and outlet channels, a saddle, a rotary hollow locking element with an output window and a through pipe installed motionlessly in the housing coaxially with its channels and located in the cavity of the locking element, characterized in that, in order to increase the life of the rotary valve , the passage pipe is installed with an axial clearance with respect to the input channel of the housing, and the entrance window is made in the shut-off element, and in the section perpendicular to the axis of rotation of the shut-off element, the size of the exit window is made more than the input by an amount equal to or larger than the size of the input channel of the housing, and the locking element is installed with the possibility of its overlap. SU,. „1229490