RECIPROCATING PUMP
First Claim
1. A reciprocating pump comprising:
- a pump chamber which is able to flow a liquid;
a suction port which enables a liquid to be suctioned into the pump chamber;
a discharge port which enable a liquid in the pump chamber to be discharged;
a reciprocating device which is capable of reciprocating in the pump chamber by a drive device and enables a liquid to be suctioned into the pump chamber from the suction port and enables the liquid to be discharged from the discharge port due to the reciprocating;
valve devices which are disposed between the pump chamber and a flow route on the suction port side and a flow route on the discharge port side, are openable and closable in response to a change in a liquid pressure in the pump chamber, which is produced depending on the reciprocating of the reciprocating device, allow a liquid to flow in an opened state, and block a liquid from flowing in a closed state;
a detection device that is able to detect a period of time during which the valve device is in the opened state or in the closed state in a predetermined cycle; and
an arithmetic device that performs an arithmetic operation to obtain pump volumetric efficiency or a flow rate based on a comparison between a period of detection time detected by the detection device and a period of time during which the valve device is in the opened state or in the closed state in the predetermined cycle during normal operation.
1 Assignment
0 Petitions
Accused Products
Abstract
A reciprocating pump includes a pump chamber; a suction port which enables a liquid to be suctioned into the pump chamber; a discharge port which enable a liquid in the pump chamber to be discharged; a plunger which is capable of reciprocating in the pump chamber by a motor; check valves are disposed between the pump chamber and a flow route on the suction port side and a flow route on the discharge port side, are openable and closable in response to a change in a liquid pressure in the pump chamber, which is produced due to the reciprocating of the plunger, a detection device that is able to detect a period of time during which the check valve is in an opened state or in a closed state in a predetermined cycle; and an arithmetic device that performs an arithmetic operation to obtain pump volumetric efficiency or a flow rate based on a comparison between a period of detection time detected by the detection device and a period of time during which the check valve is in the opened state or in the closed state in the predetermined cycle during normal operation.
8 Citations
16 Claims
-
1. A reciprocating pump comprising:
-
a pump chamber which is able to flow a liquid; a suction port which enables a liquid to be suctioned into the pump chamber; a discharge port which enable a liquid in the pump chamber to be discharged; a reciprocating device which is capable of reciprocating in the pump chamber by a drive device and enables a liquid to be suctioned into the pump chamber from the suction port and enables the liquid to be discharged from the discharge port due to the reciprocating; valve devices which are disposed between the pump chamber and a flow route on the suction port side and a flow route on the discharge port side, are openable and closable in response to a change in a liquid pressure in the pump chamber, which is produced depending on the reciprocating of the reciprocating device, allow a liquid to flow in an opened state, and block a liquid from flowing in a closed state; a detection device that is able to detect a period of time during which the valve device is in the opened state or in the closed state in a predetermined cycle; and an arithmetic device that performs an arithmetic operation to obtain pump volumetric efficiency or a flow rate based on a comparison between a period of detection time detected by the detection device and a period of time during which the valve device is in the opened state or in the closed state in the predetermined cycle during normal operation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
-
Specification