DE184943C - - Google Patents

Description

IMPERIAL

PATENT OFFICE,

PATENT LETTERING

TVl 184943 - CLASS 59 b. GROUP

Patented in the German Empire on July 7, 1904.

The invention relates to an innovation in centrifugal, turbine or the like Pumps that use closed impellers. The purpose of present pump is to provide a simple and effective arrangement, in which the friction through air chambers at the opposite ends of the centrifugal wheel is decreased. Furthermore are limbs

ίο provided that balance the impeller and prevent leakage prevent the hub.

The subject of the invention can be used for both single-stage and multi-stage Use pumps and is illustrated in the drawing on a pump with two impellers. ^.

The suction nozzle B and the pressure nozzle C are connected to the pump housing A. The spinners DVD ² to be supported by the ¹ WeIIe E and are separated by the usual separation discs lö which together with the end walls of the Schleuderradräüme ii and the discharge passage from the first to the second Schleuderrade. The. The hubs of the two wheels X) ¹ , D ² are in a corresponding position to one another and are separated from one another by a packing ring 12 on the shaft E. The spinners are of the known shape, they have the side walls 13 and blades 14 extending between the latter. Chambers 15 'are provided on the opposite sides of the centrifugal wheels; see, in which blades 16 run, which latter are attached to the outside of the centrifugal wheel walls 13. The chambers 15 extend from the outer edge of the centrifugal wheel to after the, packing rings and form air chambers on the opposite sides of the centrifugal wheel. The outlet of the first spinner D ¹ extends from the spinner through the ordinary distribution ring 17 and then laterally and downwardly through the channel 18 to the suction inlet for the second spinner Z) ² . In this channel 18 fixed guide vanes 19 are provided, which extend downwards to the suction chamber for the second centrifugal wheel. . The air is led on opposite sides of the two centrifugal wheels to the air chambers 15, it goes from one side of the pump to the other and is after the outer air chamber 15 to the delivery point of the pump from an .Luftkompressor or other suitable device through the pipe ι authorized. The air is then released from the chamber 15 from one side of each impeller after the other through the holes 2 in the impeller blades 14, it then passes through the separating discs and one of the fixed blades 19, hole 3. An outlet opening 4 from the outside of the; Chamber 15 on centrifugal wheel D ¹ is then attached and can be closed by an adjustable air cock. The approved by the tube 1 air then passes through 'the individual compartments 15 from one side of the pump after the other and escapes through the tube 4. It may also be a special pipe for each of the centrifuging wheels, or provided for each chamber be if such may seem desirable, but the arrangement described above is the simplest.

Claims (3)

Each of the centrifugal wheels is provided on the hub with a bore 20 through which the liquid goes to the equalization chamber 21 on the rear side of the centrifugal wheel in order to release the suction pressure. The centrifugal wheels also have the flanges 5 which are located outside the bore 20 and inside the suction opening. These flanges form running surfaces with the shoulders or flanges "6" of the housing and the separating disks outside the suction openings and the compensation chambers the side walls 13 of the centrifugal wheel are formed alternately with rings 8 on the packing rings 23 and are fastened in incisions on the housing and on the separating disks! To allow oil or water to get to this ring, distilled water is preferred to prevent wear Suitable openings j are provided for the entry of the liquid; In the arrangement described above, these openings form a channel which extends through the pump, so that a single opening is provided for the intermediate rings. A single channel 9 passes through the outer wall of the housing after the outer intermediate rings of the centrifugal wheel D ¹ , then through the centrifugal wheel after the Zw ischenringen on the opposite side of this wheel, then through the cutting discs and a fixed blade 19 to the inner rings on the centrifugal wheel D ² and from here finally through the wheel to the inner rings on this wheel and to the outlet opening for the housing. The liquid in question can also be conveyed after the intermediate rings through separate pipes or through a single pipe for each centrifugal wheel. ■ The whole subject of the invention sees one very simple and effective arrangement on a pump with centrifugal wheels, which in Run air and which are effectively balanced, as well as avoid leakage. The inner wings 16 in the ventilation chambers 15 are subject to a centrifugal effect within this space, creating a small part Liquid on the outer ends of the wings, is held within the chamber. This makes the chambers effective against an escape of the air at the outer edges; the drive links secured. ' The Liquid is outside the air tube to allow air to pass through that tube to enter. The outer vanes reduce the pressure against the center point to such an extent that the tendency the air to escape towards the center after the treads 5, 6, is essential is decreased. Such an Eritwejchen is completely through the rings 7, 8 between the air chambers and the running surfaces prevents / the outer vanes 16 from extending; off the edge of the centrifugal wheels after 'the intermediate rings, but the length can be kept different, and in some arrangements it is useful; that only small wings are used. The present arrangement is likely however, be the most expedient. The air chambers are of particular importance in connection with the wings on the outside of the centrifugal wheels as they Avoid friction, especially on the sides of the impeller and the housing. However, the outer blades with the compensation space and the intermediate rings, be applied with outer scoops immersed in a liquid rather than in Air move. V. The subject matter of the invention is illustrated using a two-stage pump, but it can be seen from the above that it can be used just as well in single-stage pumps as in multi-stage pumps; the individual parts can also be used on their own. Λ .-; ■ ". : ■ ■■ =. ·; ..- 'C Claims:. . '.'. '■ -.1'. Single or multi-stage centrifugal, ; Turbine or similar pump, -in the , on both sides of the centrifugal wheels air ; chambers, are provided and the Wheels have side walls, characterized in that the air chambers (15) to the inside by a number of sealing rings (7, 8), which a '; The air escapes towards the hub /impede. ; 2nd embodiment of the device according to claim i, characterized in that the on both sides of the centrifugal wheels located air chambers (ι 5J through air ducts (2) through the wheels go, are connected. 3. embodiment of the device according to claim ι and 2, characterized in that that the sealing rings on both sides of the centrifugal wheels (8) connected by liquid channels (9) passing through the centrifuge 115 go through wheels. For this purpose ι sheet of drawings.