Liquid feeding device and inkjet recording apparatus

A liquid feeding device comprising:

• a diaphragm pump configured to convey liquid by reciprocating movement of a diaphragm;
• a suction unit including a suction check valve configured to allow the liquid to flow only in a suction direction with respect to the diaphragm, and an inflow chamber into which the liquid flows through the suction check valve;
• a discharge unit including a discharge check valve configured to allow the liquid to flow only in a discharge direction with respect to the diaphragm, and an outflow chamber from which the liquid entering from the inflow chamber flows out toward the discharge check valve, and
• a filter unit including a filter disposed between the suction unit and the discharge unit, so as to cover a flow cross section of the liquid, wherein
• the suction unit and the discharge unit are arranged in a stacking manner so that the filter unit is sandwiched between them, and that the inflow chamber and the outflow chamber face the diaphragm on one side in a reciprocating direction of the diaphragm, and
• the filter unit includes
• the filter,
• an upstream side case and a downstream side case configured to sandwich the filter from an upstream side and a downstream side in a liquid flow direction with respect to the filter, and
• an inner seal member disposed between the upstream side case and the downstream side case, so as to prevent the liquid from leaking from the filter unit to outside.