DE391793C - Flush valve - Google Patents

Description

The subject of the invention is a flushing valve with a back pressure chamber and an auxiliary valve.

Such valves are already known which have one of two with the main valve stem connected membranes formed and divided by a solid septum with flow in two compartments brake chamber.

ίο According to the invention, the flow in the septum adjustable.

In this way, the amount of water that should flow through the valve each time can be adjusted will.

In the drawing, the subject matter of the invention is shown in an exemplary embodiment.

Show it:

Fig. Ι and 3 cross sections through the valve with parts in different positions, Fig. 2 is a top view of the valve and

Fig. 4 shows a detail on an enlarged scale.

In the drawing, 5. denotes the valve housing, 6 the water supply line, 7 the drain connection, 8 the inlet chamber or pressure chamber, 9 the upper chamber or counter pressure chamber, 10 the one from the pressure chamber 8 after up to the back pressure chamber 9 leading channel, 11 from the back pressure chamber 9 after channel leading to the drainage chamber 12 and the drainage nozzle 7 below. The valve body is divided into three parts 13, 14 xmd 15 and is with a partition 16 with passage 17

Mistake. The passage 17 can according to the invention by an adjusting screw 18 (Fig. 4) be managed. Parts 14 and 15 and parts 13 and 14 are supported by flanges 19 and 24 connected to one another tmd carry membranes 20 and 25, which with openings 21 and 22 26 and 27, respectively, which are provided with the channels 10 and 11 in correspondence. I'm closing the edges of the membranes to the outside, the flanges 19 and 24 with downwardly directed annular projections 23 and 31 are provided. To the To reduce the area of the membrane 25 exposed to pressure, the parts 13 and 14 are with inwardly directed annular projections 28 are provided. The arrangement of the Diaphragms 20 and 25 are chambers 29 and 30, which together form a braking chamber form, and the chambers 8 and 9 limited on one side.

A valve spindle 32 carries a valve at the lower end , which usually blocks the passage between the chambers 8 and 12 and thereby between the inlet pipe 6 and the outlet pipe 7. The spindle 32 can be provided with a shaft 34 which is guided in a guide 35 in order to ensure the vertical movement of the valve spindle 32, which slides through the stuffing box 36 in the partition wall.

In the part 15 of the valve, a spindle 37 is also provided, which at its lower i End of a valve body 48 and lying on its upper, outside of the valve housing End carries a push button 38. It possesses a reinforced part 39 to its movement to limit. The valve body 48 usually sits on the valve seat 49 and then blocks the flow from the back pressure chamber 9 to the channel 11 from or it stands in the position shown in dashed lines in the drawing, in which the flow channel ii opened and the flow channel 10 is blocked.

The flow channels 10 and 11 are outside the valve housing or are formed by tubular parts 40 and 41 (Fig. 2). The mode of operation of the valve is as follows: The chambers 29 and 30 forming the brake chamber are filled with a liquid which flows through the passage 17 in the partition 16. As a result, the movement of the two membranes is dependent on one another, and the speed of their movement is determined by the size of the passage opening. If the valve body 48 is brought into the position indicated in the drawing in dashed lines by pressing the button 38, the water contained in the counter-pressure chamber 9 can flow out through the flow channel 11, while the inflow of water through the channel 10 into the chamber 9 is shut off will. Since the button 38 has meanwhile been released, the pressure on the membrane 20 from above is released, and the pressure of the water in the chamber 8 moves the membranes 20 and 25 upwards. This causes the valve 48 to move upwards moved up and the channel 11 blocked, while the valve 33 is lifted from its seat so that the water can flow from the inflow 6 directly into the discharge line 7. The speed of the upward movement of the membranes 20 and 25 and thus each time According to the invention, the amount of water flowing out can be regulated by adjusting the passage opening 17, e.g. by means of the screws 18 (Fig. 4) is released again into the chamber 9. The water then flowing into the chamber 9 restores the pressure on the membrane 20 from above Outer back surface of this diaphragm and the resilience of the diaphragms, these and thereby the valve 2i3 are brought back to their original position. When the membranes return to their starting position, part of the liquid in the chamber 29 is forced to flow again through the passage 17 into the chamber 30. Since the passage opening 17 can be adjusted, the time of the flow from 6 to 7 and thus also the amount of water to be withdrawn each time the button 38 is pressed briefly can be regulated as desired within certain limits, as already said above.

Claims (1)

Patent application: Flushing valve with back pressure chamber, auxiliary valve and brake chamber, which by two bounded with the main valve spindle connected diaphragms and by a solid septum with throughflow opening is divided into two compartments, characterized in that the throughflow opening (17) of the septum (16) is adjustable in such a way that each time the briefly depressing the Valve button (38), the amount of water to be withdrawn within certain limits as desired is adjustable. 1 sheet of drawings.