DE1091989B - Gas shut-off valve, especially for electrostatic precipitators - Google Patents

Description

GERMAN

The invention relates to a butterfly valve for gases, in which two adjacent one another at the same time Alleys are blocked in order to prevent the gas flow during the knocking in an electrostatic precipitator.

So far, each aisle - if necessary on the entry and exit side - was each with bucket flap provided, the alternating operation of which required a complicated coupled drive. In addition, the end plates of each alley had to be extended to the butterfly valve by means of a shaft (German patent specification 850 599). According to the invention, the new butterfly valve is on a shaft arranged rotatably and designed with two blades that they have two adjacent Gas lanes are shut off at the same time, with the opening of the two-wing flap towards the outside pivoting wing is provided with a lower pivoting flap which is against the drive against the inclined barrier wall protecting the dust finally acts. When open, the Butterfly valve according to the invention, an extension of the precipitation plates through the housing.

Fig. 1 shows an embodiment of the invention in vertical section for the entry or exit side of an electrostatic precipitator in side view;

Fig. 2 shows a partial section in plan and

FIG. 3 shows a vertical section perpendicular to FIG. 1.

With 1 the precipitation plates are designated and with 2 the frame for the spray electrodes 3. The Flap 4 according to the invention is shown in Figure 1 in the open position; it is attached to a shaft 5, which is stored at 6 and 7. 8 is a lever on which the adjustment linkage (not shown) engages, 9 is a spring that always pushes the tube 5 upwards to prevent dust from entering the upper bearing 6 to prevent. 10 is a housing part designed as an additional inclined barrier wall. This weird The barrier wall enables the drive of the filter chamber to be attached so that it is protected from dust.

The closing of the flap 4 can necessarily be coupled with the slow tensioning of the knocking spring take place so that no frictional losses and no damping of the knocking impact due to the co-actuation of the flaps takes place. The flaps can be opened by means of a compression spring. For this purpose, the spring 9 can be used.

Gas shut-off valve,
especially for electrostatic precipitators

Applicant:

Metallgesellschaft Aktiengesellschaft,
Frankfurt / M., Reuterweg 14

Walter Steueragel, Frankfurt / M.,
has been named as the inventor

Because of the inclined shut-off wall protecting the drive 8, the spring 9 and the bearing 7 against dust is a corner of the flap 4, which face when opening the same of the inclined shut-off wall would have to be designed as a triangular flap 11, which when opening the flap 4 folds over so that it is with the Flap 4 forms a right angle, but when the flap 4 is closed it folds downwards, making a complete Gas closure is achieved.

The invention can be used for all devices in which a temporary Shutting off or throttling the gas flow is desired.

Claims (1)

Claim = Electrostatic precipitator with gas shut-off for the duration of the tapping of the collecting electrodes by butterfly valve, characterized in that the butterfly valve rotatably arranged on a shaft (5) (4) is designed with two wings in such a way that it has two adjacent gas lanes locks at the same time, with the swinging outward when the two-wing flap is opened Wing is provided with a lower pivotable flap (11) which is against the drive against the dust-protecting inclined shut-off wall (10) finally acts. Considered publications:
German patent specifications No. 339 625, 850 599. 1 sheet of drawings