Pump with pressure disc
A pump for conveying a medium having a suction-side inlet, a pressure-side outlet, a suction chamber, a conveyance housing. The conveyance housing having a pressure chamber in which there is a prevailing pressure chamber pressure, and a carrier shaft arranged in the conveyance housing on which a transport element is arranged for conveying the medium along a direction of conveyance from the suction chamber into the pressure chamber. A pressure disc is arranged in an axially fixed manner on the carrier shaft, wherein one side of the pressure disc is fluidly connected to the pressure chamber and exposed to a compressive force acting in the direction of conveyance.
1 . A pump comprising:
a suction-side inlet;
a pressure-side outlet;
a suction chamber;
a conveyance housing comprising a pressure chamber, wherein the pressure chamber operates at a first pressure;
a first carrier shaft and a second carrier shaft positioned in the conveyance housing;
a first transport element connected to the first carrier shaft, and a second transport element connected to the second carrier shaft, wherein the first and second transport elements are configured to convey a medium from the suction chamber into the pressure chamber; and
a first pressure disc and a second pressure disc, wherein the first pressure disc is axially fixed to the first carrier shaft and the second pressure disc is axially fixed to the second carrier shaft, wherein a corresponding first side of the first pressure disc has a first base body and a first shoulder and a corresponding first side of the second pressure disc has a second base body and a second shoulder, wherein the first and second base bodies and the first and second shoulders are fluidly connected to the pressure chamber and exposed to a compressive force acting in a direction of conveyance, wherein the first shoulder is axially offset from the second shoulder, and the first and second shoulders radially overlap in an overlapping region.
2 . The pump of claim 1 , wherein a second side of each of the first and second pressure discs distal to the pressure chamber is fluidly connected to a rear chamber, wherein the rear chamber operates at a second pressure that is less than the first pressure.
3 . The pump of claim 2 , wherein the rear chamber is fluidly connected to the suction chamber.
4 . The pump of claim 1 , wherein a slide bearing is positioned between each of the first and second pressure discs and the conveyance housing.
5 . The pump of claim 4 , wherein the slide bearing of the first pressure disc is positioned between the first shoulder and the conveyance housing, and the slide bearing of the second pressure disc is positioned between the second shoulder and the conveyance housing.
6 . The pump of claim 1 , wherein a first pressure ring is positioned radially between the first pressure disc and the conveyance housing, the first pressure ring is supported by the first side of the first shoulder of the first pressure disc proximal to the pressure chamber, and
a second pressure ring is positioned radially between the second pressure disc and the conveyance housing, wherein the second pressure ring is supported by the first side of the second shoulder of the second pressure disc proximal to the pressure chamber.
7 . The pump of claim 6 , wherein a portion of each of the first and second pressure rings extends over a radial edge of the respective first and second shoulder of the corresponding first and second pressure disc.
8 . The pump of claim 1 , wherein the first pressure disc is positioned on the first carrier shaft and connected in a friction-locking, positively-locking, and/or materially-locking manner, and the second pressure disc is positioned on the second carrier shaft and connected in a friction-locking, positively-locking, and/or materially-locking manner.
9 . The pump of claim 1 , wherein each of the first and second pressure discs and the corresponding first and second carrier shafts are molded as one piece.
10 . The pump of claim 1 , wherein the first and second carrier shafts are partially positioned outside of the pressure chamber within a bearing housing, wherein the bearing housing is fixed to the conveyance housing.
11 . The pump of claim 1 , wherein the pump is a single-fluted mandrel screw spindle pump.
12 . The pump of claim 1 , wherein the first and second pressure discs are positioned in the direction of conveyance behind the corresponding first and second transport elements.
13 . A pump comprising:
a suction-side inlet;
a pressure-side outlet;
a suction chamber;
a conveyance housing comprising a pressure chamber;
a first carrier shaft and a second carrier shaft positioned in the conveyance housing;
a first threaded fluid transport connected to the first carrier shaft, and a second threaded fluid transport connect to the second carrier shaft, the first and second threaded fluid transports fluidly connected to the suction chamber and the pressure chamber to convey a fluid from the suction chamber into the pressure chamber upon rotation of the first and second threaded fluid transports; and
a first pressure disc arranged with the first carrier shaft extending therethrough and a second pressure disc arranged with the second carrier shaft extending therethrough, such that a first side of the first pressure disc comprises a first base body and a first shoulder and a corresponding first side of the second pressure disc has a second base body and a second shoulder, and wherein the first and second base bodies and the first and second shoulders are fluidly connected to the pressure chamber and exposed to a compressive force, wherein the first shoulder is axially offset from the second shoulder, and the first and second shoulders radially overlap in an overlapping region.
14 . The pump of claim 13 , wherein a second side of each of the first and second pressure discs distal to the pressure chamber is fluidly connected to a rear chamber, wherein the rear chamber operates at a second pressure that is less than a first pressure corresponding to the pressure chamber.
15 . The pump of claim 14 , wherein the rear chamber is fluidly connected to the suction chamber.
16 . The pump of claim 13 , wherein the pump further comprises a first pressure ring that is positioned radially between the first pressure disc and the conveyance housing and a second pressure ring that is positioned radially between the second pressure disc and the conveyance housing, the first and second pressure rings supported by the first side of the respective first and second shoulder of the corresponding first and second pressure disc proximal to the pressure chamber.
17 . The pump of claim 13 , wherein the pump further comprises a pressure ring configured as a double ring that corresponds to two of the first and second pressure discs.
18 . A pump comprising:
a suction-side inlet;
a pressure-side outlet;
a suction chamber;
a conveyance housing comprising a pressure chamber, wherein the pressure chamber operates at a first pressure;
a carrier shaft positioned in the conveyance housing;
a transport element connected to the carrier shaft, wherein the transport element is configured to convey a medium from the suction chamber into the pressure chamber;
a pressure disc, wherein the pressure disc is axially fixed to the carrier shaft, wherein a first side of the pressure disc comprises a base body and a shoulder, wherein the base body and the shoulder are fluidly connected to the pressure chamber and exposed to a compressive force acting in a direction of conveyance; and
a pressure ring positioned radially between the pressure disc and the conveyance housing, the pressure ring supported by the first side of the shoulder of the pressure disc proximal to the pressure chamber, wherein a portion of the pressure ring extends over a radial edge of the shoulder of the pressure disc.