Abrégé

A submersible pump (1), comprising a water suction assembly (11) and a housing assembly (12), wherein the water suction assembly (11) is arranged in the housing assembly (12); the water suction assembly (11) comprises an impeller and an electric motor; a water inlet and a water outlet (14) are provided in the housing assembly (12); and the housing assembly (12) comprises a base (121), and a first water inlet (1213) and a second water inlet (1214) are provided in the base (121). The submersible pump (1) further comprises an isolation plate (13), wherein the isolation plate (13) is arranged on the housing assembly (12); the isolation plate (13) is configured to shield at least part of the second water inlet (1214); and the isolation plate (13) can be pushed by high-speed fluid, so as to change the water intake area of the second water inlet (1214). The submersible pump automatically adjusts the water intake area of the water inlet according to the water level, and thus can efficiently suck external liquid at various water levels.

Classes IPC  ?

• F04D 13/08 - Ensembles comprenant les pompes et leurs moyens d'entraînement la pompe étant entraînée par l'électricité pour utilisation en position immergée
• F04D 29/42 - Carters d'enveloppeTubulures pour le fluide énergétique pour pompes radiales ou hélicocentrifuges
• F04D 29/00 - Parties constitutives, détails ou accessoires
• F04D 15/00 - Commande, p. ex. régulation de pompes, d'installations ou de systèmes de pompage

Abrégé

A self-priming jet pump comprising a pump body (3) having a water inlet (1) and a water outlet (2). A jet pipe (4) and an impeller (5) are arranged in the pump body (3). A fluid sequentially passes through the water inlet (1), the jet pipe (4), the impeller (5), and the water outlet (2). At least one flow increasing channel (6) is arranged on the periphery of the jet pipe (4), the flow increasing channel (6) is wound outside the jet pipe (4), and the flow increasing channel (6) is communicated with the water inlet (1) and a water inlet of the impeller (5). The fluid passing through the flow increasing channel (6) is thrown by the impeller (5) into a pressurizing cavity (12). A valve core (7) is installed on the flow increasing channel (6), and the valve core (7) moves in the flow increasing channel (6) to open or close the flow increasing channel (6). The flow increasing channel (6) is arranged to relieve the cavitation problem, and has a simple production process and low production cost.

Classes IPC  ?

• F04D 9/06 - Utilisation de pompes d'amorçageUtilisation de pompes de surpression pour éviter le blocage par la vapeur du type à jet

Abrégé

A self-priming jet pump includes a pump body provided with a water inlet and a water outlet. A jet tube and an impeller are arranged in the pump body. The jet tube is communicated with the water inlet and an inlet of an impeller. A first channel is arranged on the outer periphery of the jet tube. The first channel is communicated with the water inlet and the impeller. A cross-section of the first channel is a closed or open annular structure, and the first channel is around the outer periphery of the jet tube. The first channel is provided with a valve core. When a pressure at the water inlet is greater than a predetermined pressure at the impeller, the valve core moves to switch on the first channel. A cavitation problem is relieved by arranging the flow-increasing channel.

Classes IPC  ?

• F04D 9/06 - Utilisation de pompes d'amorçageUtilisation de pompes de surpression pour éviter le blocage par la vapeur du type à jet
• F04D 9/02 - Pompes à auto-amorçage

Abrégé

The present application discloses a self-priming jet pump, which comprises a pump body having a water inlet and a water outlet, the pump body having arranged therein a jet pipe and an impeller; the jet pipe is communicated with the water inlet and with a pressurized water chamber inlet, the outer periphery of the jet pipe is provided with one first channel or at least two second channels, the first channel or second channels being communicated with the water inlet and the impeller; the cross section of the first channel has a closed or open annular structure, and the first channel winds around the periphery of the jet pipe; and the at least two second channels are arranged around the periphery of the jet pipe; the first channel and second channels are provided with a valve core, and when the pressure at the water inlet is greater than a preset pressure value at the impeller, the valve core moves to open the first channel or the second channels. Providing a flow increasing channel relieves the problem of cavitation, the production process is simple, and the production cost is low.

Classes IPC  ?

• F04D 9/02 - Pompes à auto-amorçage
• F04D 29/42 - Carters d'enveloppeTubulures pour le fluide énergétique pour pompes radiales ou hélicocentrifuges

Abrégé

The present disclosure provides a jet pump, including a pump body provided with a water inlet and a water outlet. A jet tube and an impeller are provided in the pump body. Fluid passes through the water inlet, the jet tube, the impeller, and the water outlet in sequence. At least one flow- increasing channel is provided at the outer periphery of the jet tube. The flow-increasing channel is provided around the outside of the jet tube. The flow-increasing channel is in communication with the water inlet and an inlet of the impeller. Fluid passing through the flow-increasing channel is thrown to the pressurizing chamber by the impeller. The flow-increasing channel is provided with a valve core. The movement of the valve core in the flow-increasing channel causes the flow- increasing channel to be opened or closed. A cavitation problem is relieved by providing the flow- increasing channel.

Classes IPC  ?

• F04D 1/00 - Pompes à flux radial, p. ex. pompes centrifugesPompes hélicocentrifuges
• F04D 29/44 - Moyens de guidage du fluide, p. ex. diffuseurs