Pump device

A pump device, comprising:

• a rotor assembly, a stator assembly and a separating member, wherein the pump device has a first inner cavity and a second inner cavity, the first inner cavity is located on one side of the separating member, the second inner cavity is located on the other side of the separating member, the rotor assembly is located in the first inner cavity, the stator assembly is located in the second inner cavity;
• wherein the pump device further comprises a first housing and a second housing, the first housing partially covers the rotor assembly, at least part of the second housing surrounds an outer circumference of the stator assembly;
• the first housing and the separating member are fixedly connected, and the first housing is sealed to the separating member;
• the second housing and the separating member are fixedly connected, and the second housing is sealed to the separating member;
• the separating member comprises a first flange portion and a cylinder portion, the cylinder portion is connected to the first flange portion, the rotor assembly is partially located in a cavity of the cylinder portion, and the first flange portion extends in a direction away from the cylinder portion along a radial direction of the separating member;
• the first flange portion comprises a first body portion and a first welding portion, the first body portion is connected to the first welding portion, the first welding portion is configured to enable the separating member to be welded to the second housing;
• the first housing comprises a second body portion and a second welding portion, the second body portion is connected to the second welding portion, the second welding portion is configured to enable the first housing to be welded to the separating member;
• and
• the pump device further comprises a first sealing ring and/a second sealing ring, the first sealing ring is configured to seal between the separating member and the second housing, and the second sealing ring is configured to seal between the separating member and the first housing.

A pump device, comprising:

• a rotor assembly, a stator assembly and a separating member, wherein the pump device has a first inner cavity and a second inner cavity, the first inner cavity is located on one side of the separating member, the second inner cavity is located on the other side of the separating member, the rotor assembly is located in the first inner cavity, the stator assembly is located in the second inner cavity;
• wherein the pump device further comprises a first housing and a second housing, the first housing partially covers the rotor assembly, at least part of the second housing surrounds an outer circumference of the stator assembly;
• the first housing and the separating member are fixedly connected, and the first housing is sealed to the separating member;
• the second housing and the separating member are fixedly connected, and the second housing is sealed to the separating member;
• the separating member comprises a first flange portion and a cylinder portion, the cylinder portion is connected to the first flange portion, the rotor assembly is partially located in a cavity of the cylinder portion, and the first flange portion extends in a direction away from the cylinder portion along a radial direction of the separating member;
• the second housing has a first groove, the first groove is recessed downward from an upper surface of the second housing along a height direction of the second housing, and
• the first housing comprises a second body portion, a second welding portion and at least one third welding portion, the second body portion is connected to the second welding portion, and the at least one third welding portion is connected to the second body portion.