Double-head double-suction water pump

Abstract

A double-head double-suction water pump comprises a double-shaft-extension motor, a driving magnetic driving part, a pump shell, an impeller, a rotating shaft and a pump cover, the pump shell comprises a water outlet connector, a shaft seat and a fixing seat, and a connecting hole is formed in the fixing seat; the impeller comprises a circular seat plate, blades and a driven magnetic piece, and a shaft fixing hole is formed in the circular seat plate; the pump cover comprises a water inlet connector, a shaft hinge seat and a water inlet hole set surrounding the shaft hinge seat. The active magnetic driving piece is fixed with a shaft extension of the motor, the pump cover is buckled with the pump shell, the pump cover covers and seals an end opening of the pump shell, and a screw penetrates through a fixed seat plate on the pump cover and a connecting hole in a fixed seat of the pump shell and is screwed with a fixed column on the motor; one end of the rotating shaft is in running fit with the shaft seat, and the other end of the rotating shaft is in running fit with the shaft hinging seat; the driving magnetic driving piece rotates along with the motor, magnetically attracts the driven magnet and drives the impeller to rotate. A shaft of the motor is separated from the impeller in a magnetic attraction driving mode; water is effectively prevented from entering the motor.

Description

Technical Field

[0001] This utility model relates to a water pump for dishwashers. Background Technology

[0002] The existing technology, Chinese patent 201910998174.4, discloses a sink dishwasher and a dish rack, belonging to the field of dishwasher technology. A sink dishwasher includes a dishwasher body with a spray arm fixedly connected to it. The dishwasher body has a cavity containing a first water tank and a second water tank. A first water pump and a second water pump are connected to the inner wall of the cavity. The pump's suction ends are connected to the first and second water tanks via connecting pipes. The pump's outlet ends are connected to a first water outlet pipe and a second water outlet pipe, both of which are connected to the spray arm. The problem is that it requires two water pumps, occupies a large space, and is costly.

[0003] Chinese Patent 202410071521.X discloses a dual-suction water pump, comprising a motor, a first impeller, and a second impeller. The first and second impellers are respectively positioned on opposite sides of the motor's main shaft, and are identical in shape, arranged symmetrically back-to-back. The impellers' placement at both ends of the motor effectively reduces the axial force on the entire rotor, thereby improving the stability of the entire rotor structure. Compared to conventional fuel cell water pumps, this dual-suction pump allows the cooling medium to enter and exit simultaneously from both sides of the pump, making it more suitable for dual-stack fuel cell systems. A potential problem is the risk of liquid entering the motor. Utility Model Content

[0004] The purpose of this utility model is to provide a double-headed, double-suction water pump with a waterproof motor.

[0005] This utility model is implemented as follows: a double-headed, double-suction water pump, characterized in that it includes a double-shafted motor, an active magnetic drive component, a pump casing, an impeller, a rotating shaft, and a pump cover.

[0006] The pump casing has an opening at one end and includes a water outlet, a shaft seat, and a fixed seat. The fixed seat is provided with a fixing hole.

[0007] The impeller includes a circular base plate, blades, and a driven magnet. The circular base plate is provided with a shaft fixing hole.

[0008] The pump cover includes a water inlet, a shaft hinge seat, and a group of water inlet holes surrounding the shaft hinge seat;

[0009] The active magnetic drive component is fixed to the motor shaft extension. The pump cover is fastened to the pump housing, and the pump cover covers and seals the end opening of the pump housing. The screw passes through the fixing plate on the pump cover and the connecting hole on the fixing seat of the pump housing and is screwed into the fixing post on the motor. The rotating shaft is fixed to the shaft fixing hole. One end of the rotating shaft is rotatably engaged with the shaft seat, and the other end is rotatably engaged with the shaft hinge seat. The active magnetic drive component rotates with the motor and is magnetically attracted to the driven magnet to drive the impeller to rotate.

[0010] The aforementioned dual-head, dual-suction water pump is characterized in that: the active drive component includes a circular disc and an N-magnet or a magnet.

[0011] N magnets or magnets are distributed in a circular pattern on a circular disk and are embedded in the disk.

[0012] The driven magnetic component is an S-magnet or a magnetically conductive metal block.

[0013] The special feature of the aforementioned double-headed double-suction water pump is that the driven magnet is pre-embedded in a circular base plate.

[0014] The special feature of the double-headed double-suction water pump is that the bearing is provided on the shaft seat and the shaft hinge seat, and the two ends of the rotating shaft are fixed to the bearing.

[0015] The special feature of the aforementioned dual-head, dual-suction water pump is that the inlet and / or outlet are equipped with solenoid valves.

[0016] This utility model discloses a double-headed, double-suction water pump. Due to its structure, the motor shaft is separated from the impeller and driven by magnetic attraction, effectively preventing water from entering the motor. Attached Figure Description

[0017] Figure 1 This is a cross-sectional view of the present invention.

[0018] Figure 2 This is one of the exploded perspective views of this utility model.

[0019] Figure 3 This is the second exploded perspective view of this utility model. Detailed Implementation

[0020] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0021] In the description of the utility model, it is necessary to explain, unless another explicit provision and limitation, term "installation", "link", "connection" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be direct connection, also can be indirectly connected through intermediate medium, can be two element internal communication, for ordinary skilled person in the art, can understand the specific meaning of above-mentioned term in the utility model with specific circumstances.

[0022] As Figure 1 Shown, a double-head double-suction pump, including double-shaft motor 1, active magnetic drive 2, pump shell 3, impeller 4, rotating shaft 5 and pump cover 6,

[0023] Pump shell 3 has an open end, including water outlet 31, shaft seat 32 and fixed seat 33, fixed seat 33 is provided with connecting hole;

[0024] Impeller 4 includes circular seat plate 41, blade 42 and driven magnetic piece 43, circular seat plate 41 is provided with shaft fixing hole;

[0025] Pump cover 6 includes water inlet 61, shaft hinge seat 62 and water inlet hole group 63 around shaft hinge seat 62;

[0026] Active magnetic drive 2 is fixed with the shaft extension of motor 1, pump cover 6 is buckled with pump shell 3, and pump cover 6 covers the open end of pump shell 3 and is sealed, the screw passes through the fixed seat plate 64 on the pump cover 6 and the connecting hole on the fixed seat 33 of pump shell 3 and is screwed with the fixed column 11 on the motor 1;Fixed column 11 supports pump shell 3;Rotating shaft 5 is fixed with the shaft fixing hole on circular seat plate 41, one end of rotating shaft 5 is rotationally matched with shaft seat 32, and the other end is rotationally matched with shaft hinge seat 62, active magnetic drive 2 rotates with motor 1 and is magnetically attracted with driven magnet and drives impeller 4 to rotate.

[0027] As a further improvement of the utility model: the active magnetic drive 2 includes circular disc body 21 and N magnet or magnet 22,

[0028] N magnet or magnet 22 is circularly distributed on circular disc body 21 and is pre-buried on circular disc body 21;

[0029] The driven magnetic piece 43 is S magnetic piece or magnetic metal block.

[0030] The driven magnetic piece 43 is pre-buried on circular seat plate 41.

[0031] As a further improvement of the utility model: the shaft seat 32 and the shaft hinge seat 62 are provided with bearing 7, and the two ends of the rotating shaft 5 are fixed with the bearing 7.

[0032] As further improvement of the utility model: the water inlet interface 61 and / or water outlet interface 31 are equipped with electromagnetic valves. With such design, the water pump at both ends of the motor can work simultaneously or separately.

[0033] Although the embodiments of the utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and their equivalents.

Claims

1. A double-head double-suction water pump, characterized by: The motor includes a shaft, a driving magnetic driver, a pump shell, an impeller, a rotating shaft and a pump cover, The pump shell has an open end, a water outlet, a shaft base and a fixing base, and the fixing base is provided with a connecting hole; The impeller includes a circular base plate, blades and a driven magnetic driver, and the circular base plate is provided with a shaft fixing hole; The pump cover includes a water inlet, a shaft hinge base and a water inlet hole group surrounding the shaft hinge base; The driving magnetic driver is fixed with the shaft of the motor, the pump cover is screwed with the pump shell, the pump cover covers the open end of the pump shell and is sealed, a screw passes through the fixing base plate on the pump cover and the connecting hole on the fixing base of the pump shell and is screwed with a fixed column on the motor, the rotating shaft is fixed with the shaft fixing hole, one end of the rotating shaft is rotationally matched with the shaft base and the other end is rotationally matched with the shaft hinge base, the driving magnetic driver rotates with the motor, is magnetically attracted to the driven magnet and drives the impeller to rotate.

2. A double-headed double suction pump according to claim 1, characterized in that: The driving magnetic driver includes a circular disc and N magnets or a magnet, The N magnets or the magnet are circularly distributed on the circular disc and are pre-embedded on the circular disc; The driven magnetic driver is an S magnetic driver or a magnetically conductive metal block.

3. A double-headed double suction pump as claimed in claim 1, wherein: The driven magnetic driver is pre-embedded on the circular base plate.

4. A double-headed double suction pump as claimed in claim 1, wherein: The shaft base and the shaft hinge base are provided with bearings, and the two ends of the rotating shaft are fixed with the bearings.

5. A double-headed double suction pump as claimed in claim 1, 2, 3 or 4, characterized in that: The water inlet and / or the water outlet is provided with a solenoid valve.

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