Water pump with double water outlets

Abstract

The invention provides a double-water-outlet water pump which comprises a motor and a shell, the shell comprises an upper pump shell, a lower pump shell and a middle shell, the upper pump shell is arranged at the top of the middle shell, a water inlet and a first water outlet are formed in the upper pump shell, a circle of drainage groove inclining in one direction is formed in the inner wall of the upper pump shell, and a water outlet is formed in the lower end of the drainage groove. The lower pump shell is arranged at the bottom of the middle outer shell, a second water outlet is formed in the lower pump shell, the middle outer shell is divided into an inner ring and an outer ring, a flow guide groove is formed between the inner ring and the outer ring, the bottom of the flow guide groove is communicated with the lower pump shell, the motor comprises a stator and a rotor, and the stator is connected with the rotor. A stator of the motor is fixed to the inner wall of the inner ring, and an impeller is fixed to the top of the rotor.

Description

Technical Field

[0001] The present invention relates to a water pump, in particular to a water pump with double water outlets. Background Art

[0002] Currently, smart toilets with booster pumps on the market generally offer two flushing modes: "wall wetting" and "off-seat automatic flushing." Wetting involves a roughly two-second flush when a person sits on the seat, wetting the inner ceramic wall and preventing foreign matter from accumulating. Off-seat automatic flushing involves a three-stage flush after the person leaves the seat: an upper flush, a bottom jetting system, and a third stage of replenishment. Both flushes utilize the upper flush line and the bottom jetting system. Therefore, the ceramic toilet body is typically equipped with two outlet pipes: one for upper wall wetting, upper flushing, and replenishment, and the other for bottom jetting. There are two common connection methods for the water supply ends of these two outlet pipes: one connects the outlets of two separate pumps to the two pipes. Water is supplied to both outlet pipes by controlling the start and stop of each pump, depending on the flushing sequence required. Another approach involves connecting a speed-controlled pump with adjustable flow and pressure to the inlet of a switching valve. The two outlets of the switching valve are then connected to the inlets of two outlet pipes. By adjusting the pump's pressure and flow, and combining it with the switching function of the switching valve to supply water to both outlet pipes, the system can adjust the pressure and flow of the pump according to the flushing mode. Both approaches require two components to supply water, which increases material and labor costs, while also increasing the risk of product failure. Summary of the Invention

[0003] The purpose of the present invention is to solve the shortcomings of the prior art and provide a dual-outlet water pump that can use the forward and reverse rotation of the water pump to direct water flow to different water outlets without switching valves or additional water pumps.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions: A dual-outlet water pump comprises a motor and a housing. The housing comprises an upper pump housing, a lower pump housing, and a middle outer housing. The upper pump housing is disposed at the top of the middle outer housing and is provided with a water inlet and a first water outlet. The inner wall of the upper pump housing is provided with a circle of diversion grooves inclined in one direction. The lower pump housing is disposed at the bottom of the middle outer housing and is provided with a second water outlet. The middle outer housing is divided into an inner ring and an outer ring, a diversion groove is disposed between the inner and outer rings, and the bottom of the diversion groove communicates with the lower pump housing. The motor comprises a stator and a rotor. The stator of the motor is fixed to the inner wall of the inner ring, and an impeller is fixed to the top of the rotor. When the motor rotates forward, water is sucked in from the water inlet, flows through the diversion groove, and then flows out from the first water outlet. The other path passes downward through the diversion groove, enters the lower pump housing, and then flows out through the second water outlet. When the motor rotates in reverse, water is drawn in from the water inlet and, as it passes through the diversion trough, its flow is blocked because it is in the opposite direction of the diversion trough. Therefore, all the water flows through the diversion trough, enters the lower pump casing, and then flows out of the second outlet. By using the forward and reverse rotation of the water pump, the water flow is directed to different outlets without switching valves or using additional water pumps.

[0005] As a preferred solution of the present invention, the impeller is divided into an upper impeller and a lower impeller, and the upper impeller and the lower impeller are separated by a partition. The upper impeller includes an outer cover and a first blade. The middle of the outer cover is a water suction port. The outer cover is in contact with the inner wall of the upper pump casing. The two ends of the first blade are respectively fixed to the outer cover and the partition. The lower impeller includes a second blade. The top of the second blade is fixed to the bottom of the partition, and the second blade is opposite to the drainage groove.

[0006] As a preferred solution of the present invention, a baffle is provided at the bottom of the inner ring, and a rib is provided on the inner wall of the lower pump casing, and the rib and the bottom of the inner ring clamp the baffle.

[0007] As a preferred solution of the present invention, a wire entry port is provided on one side of the middle shell.

[0008] As a preferred solution of the present invention, the inner ring of the entrance is provided with a rubber plug, the wire is connected to the motor after passing through the rubber plug, the outer ring of the entrance is threadedly connected to a cover, the cover is tightly pressed against the rubber plug, and the close contact between the cover and the rubber plug causes the rubber plug to deform. This deformation allows the outer ring of the rubber plug to closely contact the inner wall of the entrance to form a seal, and the inner wall of the rubber plug to closely contact the wire to form a seal.

[0009] As a preferred solution of the present invention, there is one second water outlet, and the second water outlet is arranged vertically downward.

[0010] As a preferred solution of the present invention, there is one second water outlet, and the second water outlet is arranged horizontally.

[0011] As a preferred solution of the present invention, there are two second water outlets, one is arranged vertically downward, and the other is arranged horizontally.

[0012] Compared with the prior art, the present invention has the following beneficial effects: When the motor rotates forward, water is drawn in through the water inlet, flows through the diversion trough, and then flows out of the first outlet. Another path flows downward through the diversion trough, into the lower pump casing, and then out of the second outlet. When the motor rotates backward, water is drawn in through the water inlet. However, as the flow direction is opposite to the diversion trough, the flow is blocked. Therefore, all the water flows through the diversion trough, enters the lower pump casing, and then out of the second outlet. By utilizing the forward and reverse rotation of the pump, water can be directed to different outlets without switching valves or using separate pumps. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional schematic diagram of embodiment 1 of the present invention.

[0014] Figure 2 for Figure 1 sectional view of .

[0015] Figure 3 Schematic diagram of the upper pump casing.

[0016] Figure 4 Schematic diagram of the impeller.

[0017] Figure 5 This is a schematic diagram of Example 2.

[0018] Figure 6 This is a schematic diagram of Example 3. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0020] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to relevant references, and several embodiments of the present invention are given. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0021] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present invention pertains. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0023] Example 1, like Figure 1-4 As shown, the present invention provides a technical solution: a double-outlet water pump, comprising a motor 1 and a housing, wherein the housing comprises an upper pump housing 2, a lower pump housing 3 and a middle outer housing 4.

[0024] The upper pump housing 2 is arranged on the top of the middle housing 4 . A water inlet 21 and a first water outlet 22 are provided on the upper pump housing 2 . A circle of drainage grooves 23 inclined in one direction are provided on the inner wall of the upper pump housing 2 .

[0025] The lower pump housing 3 is disposed at the bottom of the middle housing 4 . A second water outlet 31 is disposed on the lower pump housing 3 . The second water outlet 31 is disposed vertically downward.

[0026] The middle shell 4 is divided into an inner ring 41 and an outer ring 42. A guide groove 43 is provided between the inner ring 41 and the outer ring 42. The bottom of the guide groove 43 is communicated with the lower pump shell 3. An inlet 44 for the wire 7 is provided on one side of the middle shell 4. The inner ring of the inlet is provided with a rubber plug 442. The wire 7 is connected to the motor 1 after passing through the rubber plug. The outer ring of the inlet 44 is threadedly connected to a cover 441. The cover 441 presses against the rubber plug 442. The close contact between the cover and the rubber plug causes the rubber plug to deform. This deformation causes the outer ring of the rubber plug to closely contact the inner wall of the inlet to form a seal. The inner wall of the rubber plug is closely contacted with the wire to form a seal, thereby preventing water from flowing out of the inlet.

[0027] The motor 1 includes a stator 11 and a rotor 12. The stator 11 of the motor is fixed to the inner wall of the inner ring 41, and an impeller 5 is fixed on the top of the rotor 12. The impeller 5 is divided into an upper impeller 51 and a lower impeller 52. The upper impeller 51 and the lower impeller 52 are separated by a partition 53. The upper impeller 51 includes an outer cover 511 and a first blade 512. The center of the outer cover 511 is a water suction port 5a. The outer cover 511 is in contact with the inner wall of the upper pump casing 2. The two ends of the first blade 512 are respectively fixed to the outer cover 511 and the partition 3. The lower impeller 52 includes a second blade 521. The top of the second blade 521 is fixed to the bottom of the partition 53. The second blade 521 is directly opposite the drainage groove 23.

[0028] A baffle 6 is provided at the bottom of the inner ring 41 , and a rib 32 is provided on the inner wall of the lower pump housing 3 . The rib 32 and the bottom of the inner ring 41 clamp the baffle.

[0029] When the motor rotates forward, water is drawn in through the water inlet, flows through the diversion trough, and then flows out of the first outlet. Another path flows downward through the diversion trough, into the lower pump casing, and then out of the second outlet. When the motor rotates backward, water is drawn in through the water inlet. However, as the flow direction is opposite to the diversion trough, the flow is blocked. Therefore, all the water flows through the diversion trough, enters the lower pump casing, and then out of the second outlet. By utilizing the forward and reverse rotation of the pump, water can be directed to different outlets without switching valves or using separate pumps.

[0030] Example 2, see Figure 5 The second water outlet 31 has one, and the second water outlet is arranged horizontally. The rest is the same as in embodiment 1.

[0031] Example 3, see Figure 6 There are two second water outlets 31, one is set vertically downward and the other is set horizontally.

[0032] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A double-outlet water pump, characterized in that: It includes a motor and a housing, wherein the housing includes an upper pump housing, a lower pump housing and a middle outer housing. The upper pump shell is arranged on the top of the middle shell, and is provided with a water inlet and a first water outlet. The inner wall of the upper pump shell is provided with a circle of drainage grooves inclined in one direction. The lower pump housing is arranged at the bottom of the middle housing, and a second water outlet is arranged on the lower pump housing. The middle housing is divided into an inner ring and an outer ring, a guide groove is provided between the inner ring and the outer ring, and the bottom of the guide groove is communicated with the lower pump housing. The motor comprises a stator and a rotor. The stator of the motor is fixed on the inner wall of the inner ring, and an impeller is fixed on the top of the rotor.

2. A double-outlet water pump according to claim 1, characterized in that: The impeller is divided into an upper impeller and a lower impeller, and the upper impeller and the lower impeller are separated by a partition. The upper impeller includes an outer cover and a first blade. The middle of the outer cover is a water suction port. The outer cover is fitted with the inner wall of the upper pump casing. The two ends of the first blade are respectively fixed on the outer cover and the partition. The lower impeller includes a second blade. The top of the second blade is fixed on the bottom of the partition, and the second blade is opposite to the drainage groove.

3. A double-outlet water pump according to claim 1, characterized in that: A baffle is arranged at the bottom of the inner ring, and a rib is arranged on the inner wall of the lower pump housing. The rib and the bottom of the inner ring clamp the baffle.

4. A double-outlet water pump according to claim 1, characterized in that: A wire entry port is arranged on one side of the middle shell.

5. A double-outlet water pump according to claim 1, characterized in that: The inner circle of the entrance port is provided with a rubber plug, and the wire is connected to the motor after passing through the rubber plug. The outer circle of the entrance port is threadedly connected with a cover, and the cover is tightly pressed against the rubber plug. The close contact between the cover and the rubber plug causes the rubber plug to deform. This deformation causes the outer circle of the rubber plug to closely contact with the inner wall of the entrance port to form a seal, and the inner wall of the rubber plug to closely contact with the wire to form a seal.

6. A double-outlet water pump according to claim 1, characterized in that: The second water outlet has one and is arranged vertically downward.

7. A double-outlet water pump according to claim 1, characterized in that: The second water outlet has one and is arranged horizontally.

8. A double-outlet water pump according to claim 1, characterized in that: There are two second water outlets, one is arranged vertically downward, and the other is arranged horizontally.

Images