DE44271C - Device for opening the suction valves of pumps that suck from air-diluted rooms - Google Patents

Description

IMPERIAL

PATENT OFFICE.

CLASS 59: Ργμρκν

suck.

In pumps of ordinary construction, which have the purpose, hot liquids to lift or push into a container, failure of the same is often observed.

The reason for this is that the piston of the pump becomes one at the beginning of the stroke This creates a water-thinned space that can be opened immediately when the liquid is cold by lifting the drinking valve and after-flow is stopped again, while with hot liquids, corresponding to the evacuation of air produced, vapors from the residues left in the valve housing form and not infrequently the suction valve remains closed.

In order to remedy this inconvenience and to convey the hotest possible fluids one has constructions of various kinds, but mostly in a very complex manner executed without fully fulfilling the purpose, while on the other hand the purpose is achieved easily and safely through the construction I have carried out. The new and Their peculiarities are described below and are from the accompanying drawing can be seen in more detail.

In the drawing, 1 bimanual two pumps are in Fig α and b shown and the suction valves c and d are each sealed by a / in means of the two valve housings and e _ glands bar g and /. with a control piston g respectively. /;, which is in a cylinder i and also provided with a stuffing box. k- can move up and down, as well as through the pipe / and m connected with the former in such a way that the suction valve housing f through the pipe / with the pump a. on the other hand, the suction valve housing e is connected to the pump b through the pipe m . On the control piston g respectively. h there is a helical spring η or. ο, the usability of which will be discussed below.

If the movement of the piston ρ in the direction to χ is ended and if the same is to start the direction to y again, a vacuum is generated through the connecting pipe m under the control piston h , by virtue of which the downward movement of the control piston h is accelerated, and around the A helical spring ο is attached to increase the further precise closing of the suction valve d and to prevent it from hitting the same. The respective tension of this helical spring 0 can be increased or decreased as required by the adjustability of the ring q.

A cock r and s is attached to open and close the pipe connection.

The pressure generated in the pump b by the piston ρ now acts on the other hand again through the connecting pipe / on the control piston g. The latter is lifted and then simultaneously lifts valve c.

Conversely, the effect takes place with

suction valve c connected to pump b takes place when the piston moves in the direction of χ. In this way, depending on the direction of the moving piston, the suction valve is automatically lifted or alternately. closed.

Fig. 2 shows the two combined pumps a and b in outline,

Fig. 3 shows the vertical cross section through the pump a.

Claims (1)

Patent claim: In the case of double-acting pumps that suck from air-diluted rooms, the arrangement of suction valves (cd), which each rest on a control piston (gh) that is under spring load (no) but not firmly connected to them, which are located in cylinders (ik ) , which are alternately connected by pipes (Im) to the pressure chambers of both pump cylinders. For this purpose ι sheet of drawings.