Pump system with vacuum source
DCFirst Claim
1. A tank for holding a liquid for a liquid ring vacuum pump, the liquid ring vacuum pump having a vacuum input port, an exhaust output port and a liquid inlet port, the tank comprising:
- an inlet port in fluid communication with the exhaust port of the vacuum pump;
a first outlet port in fluid communication with atmosphere, the first outlet port positioned above an expected waterline in the tank; and
a second outlet port in fluid communication with the liquid inlet port of the vacuum pump, the second outlet port positioned below the expected waterline in the tank.
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Accused Products
Abstract
A self priming pump system that includes a motor coupled to a centrifugal pump for driving the centrifugal pump. A separator having a reservoir is provided for storing a limited amount of pumped fluid in advance of the centrifugal pump. A vacuum source provides a vacuum suction to the reservoir to draw pumped fluid into the reservoir to prime the pump. To increase the reliability of the vacuum pump system, a deflector and/or extension may be provided in the reservoir to help prevent pumped fluid from entering the vacuum pump input. Also, the configuration of a tank used to store liquid for the vacuum pump system may be configured to separate and collect sediments near a drain port, which then can be easily drained. For positive head pressures, one or more valves may be used to prevent pumped fluid from escaping the reservoir, if desired.
84 Citations
37 Claims
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1. A tank for holding a liquid for a liquid ring vacuum pump, the liquid ring vacuum pump having a vacuum input port, an exhaust output port and a liquid inlet port, the tank comprising:
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an inlet port in fluid communication with the exhaust port of the vacuum pump;
a first outlet port in fluid communication with atmosphere, the first outlet port positioned above an expected waterline in the tank; and
a second outlet port in fluid communication with the liquid inlet port of the vacuum pump, the second outlet port positioned below the expected waterline in the tank. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
a sediment trap; and
a drain port or plate for draining sediments from the sediment trap.
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3. A tank according to claim 1 wherein the tank includes:
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a top;
sides; and
a bottom, the bottom configured to capture sediments in a selected region; and
a drain port situated near the selected region for selectively draining the sediments.
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4. A tank according to claim 3 wherein the selected region is lower than the remainder of the bottom.
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5. A tank according to claim 4 wherein the bottom is sloped down to the selected region.
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6. A tank according to claim 4 wherein the selected region is spaced from the second outlet port.
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7. A tank according to claim 4 wherein the second outlet port is positioned higher than the selected region.
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8. A tank according to claim 1 wherein the tank includes:
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two opposing sides;
the inlet port and the second outlet port positioned on one of the opposing sides of the tank; and
means for directing the exhaust of the vacuum pump received via the inlet port of the tank towards the other opposing side of the tank.
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9. A tank according to claim 8 further comprising:
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a sediment trap positioned towards the other opposing side of the tank; and
a drain port for draining sediments from the sediment trap.
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10. A tank according to claim 1 further comprising:
a filter positioned between the second outlet port of the tank and the liquid inlet port of the vacuum pump.
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11. A tank according to claim 10 wherein the filter includes a sediment trap.
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12. A tank according to claim 10 wherein the filter includes a porous material or substance.
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13. A tank according to claim 1 further comprising a muffler in line with the first outlet port of the tank.
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14. A separator for use with a pump assembly that has a vacuum pump and a main pump, the separator comprising:
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a main reservoir;
a main intake port into the main reservoir;
a main output port from the main reservoir, the main output port in fluid communication with a main intake port of the main pump;
an inner tank disposed within the main reservoir, the inner tank being fluidly isolated from the main reservoir, the inner tank including;
an inlet port in fluid communication with an exhaust port of the vacuum pump;
a first outlet port in fluid communication with atmosphere, the first outlet port positioned above an expected waterline in the inner tank; and
a second outlet port in fluid communication with a liquid inlet port of the vacuum pump, the second outlet port positioned below the expected waterline in the inner tank. - View Dependent Claims (15, 16)
a sediment trap; and
a drain port for draining sediments from the sediment trap.
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16. A separator according to claim 15, further comprising:
a filter positioned between the second outlet port of the inner tank and the liquid inlet port of the vacuum pump.
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17. A pump assembly comprising:
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a main pump, the main pump pumping fluid to a pump output, the fluid at the pump output being under pressure;
a liquid ring vacuum pump, the liquid ring vacuum pump having a vacuum input port, an exhaust output port and a liquid inlet port, the liquid inlet port for receiving a liquid;
a vacuum pump supply tank for supplying liquid to the liquid inlet of the liquid ring vacuum pump; and
a valve for selectively providing fluid to the vacuum pump supply tank. - View Dependent Claims (18, 19, 20, 21)
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22. A separator for use in a pump assembly, the separator comprising:
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a reservoir;
a float system including a float that extends into the reservoir and a one-way valve controlled by the float; and
the one-way valve allowing fluids and/or air to enter the reservoir, but not allowing fluids and/or air to exit the reservoir. - View Dependent Claims (23, 24, 25)
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26. A separator for use with a pump assembly that has a vacuum pump and a main pump, the separator comprising:
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a main reservoir for storing pump fluid for the main pump;
a main intake port into the main reservoir;
a main output port from the main reservoir in fluid communication with a main intake port of the main pump;
a vacuum port positioned above an expected waterline in the reservoir, the vacuum port in fluid communication with an inlet port of the vacuum pump; and
deflector means positioned adjacent to, but spaced from, the vacuum port, the deflector means for deflecting pump fluid that is directed at the vacuum port. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34)
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35. A separator for use in a pump assembly, the separator comprising:
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a reservoir;
a first valve for creating variable fluid communication between the reservoir and a vacuum pump;
a second valve for creating variable fluid communication between the reservoir and the atmosphere. - View Dependent Claims (36, 37)
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Specification