DE444773C - Shut-off valve with a valve seat that can be moved in the direction of the valve axis - Google Patents

Description

GERMAN EMPIRE

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ISSUED HUl 30, 1927

REICH PATENT OFFICE

PATENT LETTERING

- JVr 444773 CLASS 47g GROUP

(J 24734 XII / 47g)

Otto Jost and Robert Helmer in Misburg b. Hanover.

Shut-off valve with a valve seat that can be moved in the direction of the valve axis.

Patented inTDeutschen Reiche vomli. May 1924.

Valves are known which are under full | take the repair parts or

Stress can be repaired. However, all valves of this type have the disadvantage that not all parts can be replaced or repaired during operation, in particular it is not possible to change the pre-auxiliary devices during operation.

These disadvantages are eliminated by the present invention.

Another advantage is that the

Auxiliary slide (Fig. 4) not an actual part of the valve, but that same for making repairs on others large interchangeable valves can be used.

The drawing shows an embodiment of the invention.

Fig. Ι is a vertical section through the. Valve;

Fig. 2 is a section along AB of Fig. 1; Fig. 3 is a section along CD of Fig. 2; Figure 4 is a section through the sealing device;

Figures 5 and 6 show the valve flap in side and front views;

Figures 7 and 5 illustrate the end of the valve stem in side and front views;

Fig. 9 is a section through a second embodiment the displacement device for the valve seat.

The flap 1 is rotatably suspended in the valve housing 3 with two lateral pins 2 and has two projections 4, between which one extension of the screw spindle 6 forming shaft 5, which has a wedge 7 at its lower end, as well as lateral fingers 8, which are guided in grooves 9 of the valve housing 3. The flap 1 has a central protrusion 10. The valve seat is formed by a tube 11, which is provided with an external thread 12, in which a threaded ring 13 engages, the can be rotated by a screw 14. The end of the valve seat tube 11 is from a space 16 surrounded which can be covered outside by a plate 17, which is clamped by means of wedge pieces iS. 19 and 20 are the two opposite each other Durchfuißöffnungen the valve 3. The closure device consists of one Plate 21, which can be moved by means of a threaded spindle 22 and in a housing

23 seated.

In the embodiment according to Fig. 10, an eccentric engages in the valve seat tube 11 on both sides

24, which can be rotated by means of a square 25.

The mode of operation is such that by rotating the spindle 6 for the purpose of locking the I. Valve the inclined 'level 7 depressed!

is and on the projection 10 of the flap 1 hangs up, whereby this is pressed firmly against the valve seat 11, so that now the Flow from 19 to 20 is closed.

For the purpose of opening the valve spindle 6 is rotated in the opposite direction, so that the - shaft 5 is raised and initially the cone f dea projection 10 is free, whereupon the two fingers 8 grasp the projections 4 and rotate the flap i- around the pin 2, so that the flow becomes free.

If you want to change the inner parts of the valve., so the two wedges 18 are removed, the plate 17 removed, then the Auxiliary slide 21 placed and fastened by means of wedges 18; then the spindle 14 rotated, causing the valve seat tube 11 in Is moved in the direction of arrow 25; this frees space 16 and you can Now slide the sealing plate 21 into the space 16 by turning the spindle 22, so that the flow behind 19 is completed.

Now all internal parts including the seat can be removed and replaced or be repaired.

If the repair takes a long time to complete, the opening through which Removal of the valve head has arisen, sealed by means of a blind flange, so that now the auxiliary slide 21 instead of the valve flap ι opened and closed at will can be.

To reinsert the repaired parts, the procedure described above is reversed - S = swept instead.

After removing the auxiliary slide, it is checked for damage and kept ready for other repairs.

Claims (1)

Claim: Shut-off valve with a valve seat that can be displaced in the direction of the valve axis, thereby characterized in that the pipe section (11) forming the valve seat on that of the valve flap remote end is designed as a valve and here an opening in the valve housing for inserting a flange slide concludes. 1 sheet of drawings.