CN219395889U - Water pump - Google Patents

Abstract

A water pump, comprising: a motor; the volute comprises an outer shell and an inner shell, wherein the outer shell comprises a water inlet and a water outlet, the water inlet and the water outlet are communicated with an inner area of the outer shell, the inner area of the outer shell can be communicated with the first inner cavity, the inner shell is detachably arranged with the outer shell, an impeller and a rotor are arranged in the inner shell, and the rotor rotates and drives the impeller to rotate under the driving of a motor.

Description

Water pump

The application is a divisional application of Chinese patent application with the application number of 202220900495.3 and the utility model name of a pet drinking bowl, which is filed on 4 months and 16 days of 2022.

Technical Field

The present application relates to water pumps, and more particularly, to a water pump that facilitates removal of impellers and rotors.

Background

The pet market is rising, and the demand of pet supplies is continuously increasing. In order to ensure the water intake of the pet, the pet drinking bowl is widely used because it can provide clean and sanitary drinking water for the pet. Some known pet drinkers have the disadvantage of being difficult to assemble, for example, the internal devices in the water tank are often provided separately from the water tank, requiring repeated disassembly and assembly when changing the water or cleaning the water tank. Some known pet drinkers suffer from the disadvantage of having a small drinking area, for example, by providing a spray head that allows water to fall from the spray head, but occupies a central position of the drinker such that the space below is covered by the spray head. Some known pet drinkers have poor water storage in the drinking area, and once the circulating water stops flowing, the pet will have no water to drink in a short time. Some pet drinking bowl water dispenser disk dismouting is inconvenient. Some pet drinkers must be used with a filter or the impeller is easily blocked. Some pet drinkers have a motor for driving the impeller immersed in water, requiring high waterproof measures. Some pet drinkers provide only a single drinking location. Some pet drinkers, after being used for a period of time, can not or hardly discharge water due to pump blockage caused by pet hair or other impurities. Some pet drinkers, impellers and rotors are difficult to disassemble and require the aid of tools.

Disclosure of Invention

It is an object of the present application to provide a water pump which has a number of advantages over the prior art. The following presents a simplified summary of some embodiments of the application in order to provide a basic understanding of the application. This summary is not an extensive overview of the application and is intended to neither identify key elements of the application nor delineate the scope of the application. Its sole purpose is to present some embodiments of the application in a simplified form.

According to an embodiment of the present application, a water pump includes: a motor having a first interior cavity; a volute comprising an outer housing and an inner housing, an interior region of the outer housing being communicable with the first interior cavity, the inner housing being removably disposable with the outer housing, the inner housing comprising a main body portion having a generally circular recess, the main body portion comprising a first portion receivable in the interior region of the outer housing and a second portion receivable in the first interior cavity, the first portion defining a second interior cavity, the second portion defining a third interior cavity, the main body portion comprising an inlet at an end of the first portion and an outlet at a side of the first portion, the second interior cavity and the third interior cavity each being communicable with the outside through the inlet and the outlet; a water inlet for communicating with the inlet; a water outlet for communicating with the outlet; an impeller mounted in the second interior chamber downstream of the inlet and upstream of the outlet; the rotor is connected with the impeller, and is arranged in the third inner cavity, and driven by the motor, the rotor rotates and drives the impeller to rotate.

Preferably, the housing further comprises a circumferential wall, and the water outlet is provided on a side portion which is tangential to the circumferential wall and protrudes outward.

Preferably, the water inlet is arranged on the cover, and the water inlet is detachably connected with the shell.

Preferably, the first portion may mate with the circumferential wall and/or the second portion may mate with the first lumen to securely engage the inner housing with the outer housing or the motor.

Preferably, the end of the first portion further comprises a flange configured to be located externally of the outer shell when the outer shell and the inner shell are in assembled engagement, so as to exert a force on the flange externally.

Preferably, the motor further comprises a rotating shaft connecting the impeller and the rotor.

Preferably, a positioning groove is formed in the bottom of the third inner cavity, and one end, connected with the rotor, of the rotating shaft is inserted into the positioning groove.

Preferably, a sealing cover is arranged between the second inner cavity and the third inner cavity, the sealing cover is provided with a shaft hole, the rotating shaft is arranged in the shaft hole in a penetrating mode, and the sealing cover is used for preventing water from entering the third inner cavity.

Preferably, the device further comprises a sealing ring for sealing the gap between the shaft hole and the rotating shaft.

Preferably, the motor further comprises a motor chamber, wherein the motor is arranged in the motor chamber, the shell is connected with the motor chamber, and the inner area of the shell is communicated with the first inner cavity through the through hole.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required for the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a perspective view of a pet drinking fountain provided in a first embodiment of the present application;

FIG. 2 is an exploded schematic view of a top view of the pet drinking fountain of FIG. 1;

FIG. 3 is an exploded schematic view of the bottom view of the pet drinking fountain of FIG. 1;

FIG. 4 is a perspective view of a tank portion of the pet drinking fountain of FIG. 1;

FIG. 5 is an exploded schematic view of the internal devices of the tank portion of FIG. 4;

FIG. 6 is a cross-sectional view of the internal device of the tank portion of FIG. 4;

FIG. 7 is a cross-sectional view of the pet drinking fountain of FIG. 1;

FIG. 8 is a perspective view of a pet drinking fountain provided in a second embodiment of the present application;

FIG. 9 is an exploded schematic view of the internal device of the tank portion of the pet drinking fountain of FIG. 8;

FIG. 10 is a perspective view of the motor of the pet drinking fountain of FIG. 8;

FIG. 11 is a perspective view of a pet drinking fountain provided in a third embodiment of the present application;

FIG. 12 is a perspective view of a tank portion of the pet drinking fountain of FIG. 11;

FIG. 13 is an exploded schematic view of the internal device of the tank portion of FIG. 12;

FIG. 14 is a perspective view of the motor of the pet drinking fountain of FIG. 11;

FIG. 15 is a rear perspective view of the sealing cover of the pet drinking fountain of FIG. 11;

FIG. 16 is a cross-sectional view of the internal device of the tank portion of FIG. 12;

FIG. 17 is a perspective view of a pet drinking fountain provided in a fourth embodiment of the present application;

FIG. 18 is a perspective view of a tank portion of the pet drinking fountain of FIG. 17;

FIG. 19 is an exploded view of the internal device of the tank portion of FIG. 18;

FIG. 20 is a cross-sectional view of the internal device of the tank portion of FIG. 18, shown under another explosion schematic;

FIG. 21 is a cross-sectional view of the inner housing in the internal device of the pet drinking fountain of FIG. 17;

fig. 22 is a rear perspective view of the sealing cover of the pet drinking fountain of fig. 17.

Detailed Description

In the following description, various embodiments of the present application will be described. For purposes of explanation, specific configurations and details are set forth in order to provide a thorough understanding of the embodiments. However, it will be apparent to one skilled in the art that the present application may be practiced without the specific details. Furthermore, well-known features will be omitted or simplified in order not to obscure the embodiments being described.

Referring now to the drawings, in which like numerals indicate like parts throughout the several views, FIG. 1 shows a first embodiment of a pet drinking fountain 10. Referring to fig. 1 and 2, the pet drinking fountain 10 includes a water tank 12, the water tank 12 having a bottom wall 14 and a side wall 16 extending upwardly around the periphery of the bottom wall 14, the upper edge of the side wall 16 forming an opening 18 of the water tank 12 so that water can enter and exit the water tank 12 from the opening 18.

Referring to fig. 4-6, motor compartment 20 is formed at the bottom of tank 12. By way of non-limiting example, motor compartment 20 is formed at the angle between two adjacent side walls 16. In this manner, two side walls 16, and side wall 22, end wall 24 extending upwardly from bottom wall 14 within tank 12, and top wall 26 at the upper edges of side wall 22 and end wall 24 enclose motor compartment 20. A chamber cover 28 is provided at the bottom of the water tank 12 so that the motor chamber 20 can be opened at the bottom of the water tank 12. The motor compartment 20 may be integrally formed with the water tank 12.

A motor 30 is disposed within the motor compartment 20 with a motor shaft 32 extending into the water tank 12 through a shaft bore 34 formed in the end wall 24. In this way, the motor chamber 20 is closed from the water tank 12 except for the shaft hole 34. The heat dissipation hole 36 for heat dissipation of the motor 30 is disposed on the chamber cover 28, and the power cord 38 of the motor 30 extends to the outside through the chamber cover 28, and of course, a power interface (not shown in the drawing) may also be disposed on the side wall 16 or the bottom wall 14 of the water tank 12 instead of the power cord 38, where the power interface is externally connected to the power cord to facilitate the disassembly of the power cord, and the power interface may be a USB interface, for example. The seal 40 serves to seal the gap between the shaft bore 34 and the motor shaft 32 to prevent water from entering the motor chamber 20 from the water tank 12. The seal 40 may be, for example, a seal ring and may be threaded onto the motor shaft 32.

An impeller 42 and a volute 44 are disposed within the water tank 12 and outside the end wall 24 of the motor chamber 20, wherein the impeller 42 is coupled to the motor shaft 32 and rotates about the axis of rotation of the motor shaft 32. The volute 44 may be integrally formed with or removably connected to the motor chamber 20. The impeller 42 is positioned within the volute 44, the water inlet 48 is positioned centrally of the volute 44 and in fluid communication with the impeller 42, and the water outlet 50 is positioned adjacent to the tangential outer side of the impeller 42. As such, the impeller 42, volute 44, and motor 30 in combination substantially perform the function of a water pump.

The filter housing 52 is disposed outside the water inlet 48, and the filter housing 52 and the volute 44 may be integrally formed or detachably connected. The filter housing 52 defines a filter chamber 54 in fluid communication with the impeller 42 through the water inlet 48 and with the tank 12 through a filter inlet 56. Filter cotton or the like may be placed within the filter chamber 54.

Referring to fig. 2-3, the upper cover 58 removably overlaps the upper edge of the side wall 16 of the water tank 12 such that the devices and water inside the water tank 12 may not necessarily be visible when the pet water dispenser 10 is assembled. A connection pipe 60 extends downward from the upper cover 58 so as to communicate above and below the upper cover 58, a lower port 62 thereof is connected to the water outlet 50 of the volute 44, and an upper port 64 thereof is formed at the top of the upper cover 58. In the present embodiment, the upper port 64 is located near an upper edge 66 of the upper cover 58. The upper cover 58 may also be integrally formed with the tank 12 and then water may be injected into the tank 12 through the upper port 64.

A recess 68 is also formed in the top of the upper cover 58 at a location spaced from the upper port 64 such that the upper port 64 is located outside of the recess 68. The groove 68 extends in the longitudinal direction from a position proximate to the upper port 64 to a position proximate to a lower edge 70 opposite the upper edge 66, and in the transverse direction from a position proximate to a left edge 72 of the upper cover 58 to a position proximate to a right edge 74 opposite the left edge 72. In this manner, the recess 68 occupies substantially a substantial portion of the top of the upper cover 58.

A filter tank 76 is formed at the bottom of the recess 68, and a water filtering hole 78 is formed at the bottom of the filter tank 76, and the water filtering hole 78 communicates with the upper and lower sides of the upper cover 58. The filter 80 is placed in the filter tank 76, and a stopper rib 82 for stopping the filter 80 may be formed in the filter tank 76. The water filtering holes 78 have as small a pore size and as many as possible so that the water filtering holes 78 can block large particle impurities from entering the water tank 12 even when the filter 80 is not used, while allowing water to pass smoothly.

Referring to fig. 2, 3 and 7, a drinking water tray 84 is placed in the recess 68 with a gap 86 between the periphery of the drinking water tray 84 and the periphery of the recess 68. A plurality of feet 88 extend downwardly from the bottom of the drinking bowl 84 and rest on the recess 68 to support the drinking bowl 84 above the bottom of the recess 68 in such a manner that a void 90 is formed between the bottom of the drinking bowl 84 and the bottom of the recess 68. The bottom of the recess 68 may be provided with a detent 92 for locating the foot 88 to prevent unwanted shifting or rocking of the drinking bowl 84.

An upwardly extending flow-directing spout 94 is inserted from the upper port 64 and partially received in the connecting tube 60, the flow-directing spout 94 being in fluid communication with the outlet 50 of the volute 44, either directly or indirectly through the connecting tube 60 with the outlet 50. The flow-directing lance 94 includes a tubular portion 96 and a head portion 98, the tubular portion 96 being an elongate straight tube having an inlet end 100 with an inner diameter smaller than an outlet end 102 and an inner diameter that decreases from the outlet end 102 to the inlet end 100. The head portion 98 is spade-shaped with a rear side defining a baffle wall 104 and two sides upturned defining a ramp 106 and a front side defining a flow-directing outlet 108, the outlet end 102 being disposed around the baffle wall 104 and the ramp 106 and upstream of the flow-directing outlet 108. The diversion outlet 108 is located above the drinking pan 84. Water enters the tubular portion 96 from the inlet end 100 and exits from the outlet end 102 and then flows out the diversion outlet 108 through the guidance of the head portion 98.

It should be appreciated that the pet drinking bowl 10 may be devoid of the upper cover 58, with the drinking bowl 84 overlapping the upper edge of the side wall 16 of the water tank 12. The filter 80 may be secured below the beverage tray 84 or the filter 80 may be absent.

In use, a proper amount of water is poured into the water tank 12 through the opening 18, the pet water dispenser 10 is assembled, and the motor 30 is powered on, at which time the water in the water tank 12 passes through the water inlet 48, the impeller 42, the water outlet 50, the connecting tube 60 (optional), the flow guiding spout 94 in sequence under the rotation of the impeller 42, and then flows out of the flow guiding outlet 108 of the flow guiding spout 94 and falls into the water drinking tray 84, and the pet can drink the water in the water drinking tray 84 or the water on the head portion 98 of the flow guiding spout 94. When the drinking bowl 84 is full, water flows through the gap 86 into the recess 68 and then through the void 90 into the filter tank 76, after being filtered by the filter 80 (optional), the drain hole 78, and back into the tank 12. In this way, water can flow in the pet drinking bowl 10 in a circulating manner.

Fig. 8 shows a pet drinking fountain 110 of a second embodiment. The pet drinking bowl 110 includes a water tank 112, an upper cover 114, a drinking bowl 116, and a flow-directing spout 118.

Referring to fig. 9 and 10, a motor chamber 120 is formed at the bottom inside the water tank 112, and a motor 122 is disposed inside the motor chamber 120. The motor 122 has a rotor chamber 124 disposed in correspondence with a through hole 126 in the motor chamber 120, the through hole 126 communicating the water tank 112 and the rotor chamber 124. The gap between the through hole 126 and the rotor chamber 124 is provided with a seal (not shown in the drawings) to prevent water in the water tank 112 from entering the motor chamber 120 through the gap, and the seal may be a sealing ring, for example. In this way, water in the water tank 112 can only enter the rotor cavity 124. The motor compartment 120 may be integrally formed with the water tank 112.

An impeller 130 and a volute 132 are disposed within the water tank 122 and outside the motor chamber 120, wherein the impeller 130 is coupled to a rotor 134, and the rotor 134 is rotatably received within the rotor cavity 124 through the through-hole 126. The rotor 134 is typically made of permanent magnet material, and the coil and U-shaped iron core (not shown) of the motor 122 are disposed around the rotor cavity 124, such that when the motor 122 is energized, the rotor 134 rotates within the rotor cavity 124 under the influence of the magnetic field, thereby rotating the impeller 130.

In use, a proper amount of water is poured into the water tank 112, the pet drinking bowl 110 is assembled, the motor 122 is powered on, and at this time, the water in the water tank 12 passes through the impeller 130 and the diversion nozzle 118 in sequence and falls into the drinking water tray 116 under the rotation of the impeller 130. After the drinking bowl 116 is full, it can flow back into the tank 112 through the upper cover 114.

It should be appreciated that the rotor cavity 124 may be formed separately from the motor chamber 120 and sealingly connected at the through-hole 126 such that there is no gap between the through-hole 126 and the rotor cavity 124 and no seal is required.

Fig. 11 shows a pet drinking fountain 140 of a third embodiment. The pet drinking bowl 140 includes a water tank 142, an upper cover 144, a drinking bowl 146, and a flow-directing spout 148.

Referring to fig. 12 to 16, a motor chamber 150 is formed at the bottom of the water tank 142, and a motor 152 is disposed in the motor chamber 150. Referring to fig. 14, the motor 152 has a rotor chamber 154 provided corresponding to a through hole 156 on the motor chamber 150, the through hole 156 communicating the water tank 142 and the rotor chamber 154. A seal 158 is provided in the gap between the motor 152 and the motor chamber 150 to prevent water in the water tank 142 from entering the motor chamber 150 through the motor gap and only into the rotor chamber 154. The motor compartment 150 may be integrally formed with the water tank 142.

The through hole 156 is provided with a sealing cover 160, and referring to fig. 15, the sealing cover 160 has a shaft hole 162 at the center thereof, in such a manner that the water tank 142 is closed with the rotor chamber 154 except for the shaft hole 162.

An impeller 164 and a volute 166 are disposed within the water tank 142 outside the motor chamber 150, wherein the impeller 164 is coupled to a rotor 168, and the rotor 168 is received within the rotor chamber 154 through the through-hole 156. The rotor 168 is provided with a rotation shaft 170, one end of the rotation shaft 170 is connected to the impeller 164 through the shaft hole 162, and the other end of the rotation shaft 170 is inserted into a positioning groove 172 (shown in fig. 16) provided in the rotor chamber 154. The rotor 168 is typically made of permanent magnet material, and the coils and U-shaped iron core (not shown) of the motor 152 are disposed around the rotor chamber 154, such that when the motor 152 is energized, the rotor 168 and shaft 170 rotate within the rotor chamber 154 under the influence of the magnetic field, thereby rotating the impeller 164. Referring to fig. 15 and 16, the sealing ring 174 is used to seal the gap between the shaft hole 162 and the rotating shaft 170, in such a way that water in the water tank 142 cannot enter the rotor chamber 154, and also prevent hair impurities and the like from entering the rotor chamber 154, thereby preventing the rotor 168 from stopping rotating due to blockage and stopping the water circulation of the pet water fountain 140 during use.

The volute 166 is integrally formed with the motor housing 150, the volute 166 including a water inlet 176 and a water outlet 178, the volute 166 further including a removable cover 180, the water inlet 176 being disposed on the cover 180. The water outlet 178 communicates with the flow-directing spout 148.

In use, a proper amount of water is poured into the water tank 142, the pet drinking bowl 140 is assembled, the motor 152 is powered on, and at this time, the water in the water tank 142 passes through the impeller 164 and the flow guiding nozzle 148 in sequence and then falls into the drinking water tray 146 under the rotation of the impeller 164. After the drinking water tray 146 is full, it can flow back into the water tank 142 through the upper cover 144.

Fig. 17 shows a pet drinking bowl 190 of a fourth embodiment. The pet drinking bowl 190 includes a water tank 192, an upper cover 194, a drinking bowl 196 and a diverter spout 198.

Referring to fig. 18 to 20, a motor chamber 200 is formed at the bottom of the water tank 192, and a motor 202 is disposed in the motor chamber 200. The motor 202 has a first interior cavity 204 that is disposed in correspondence with a through hole 206 in the motor chamber 200, the through hole 206 communicating the water reservoir 192 with the first interior cavity 204. The gap between the motor 202 and the motor chamber 200 is provided with a sealing ring 208 to prevent water in the water reservoir 192 from entering the motor chamber 200 through the gap and only into the first interior cavity 204. The motor compartment 200 may be integrally formed with the water reservoir 192.

Referring to fig. 18 and 19, the volute includes an outer housing 212 and an inner housing 214. The housing 212 is integrally formed with the motor compartment 200, the housing 212 being disposed within the water reservoir 192 and outside of the motor compartment 200, the housing 212 including a circumferential wall 216 and a water outlet 218, the water outlet 218 being disposed on a side 220 tangential to the circumferential wall 216 and projecting outwardly therefrom, the water outlet 218 being communicable with the pilot spout 198. The through hole 206 is located at the center surrounded by the circumferential wall 216, so that the inner area of the housing 212 can be communicated with the first inner cavity 204, and the water outlet 218 can be extended upwards. The water inlet 222 is disposed opposite the through-hole 206, and the water inlet 222 communicates with the interior region of the housing 212. The water inlet 222 may be provided on a cover 224 that is removably coupled to the housing 212.

The inner housing 214 and the outer housing 212 are detachably provided. Referring to fig. 19-21, the inner shell 214 includes a body portion having a generally circular concave shape including a first portion 228 receivable within an interior region of the outer shell 212 and a second portion 230 receivable within the first interior cavity 204. The first portion 228 defines a second interior cavity 232 and the second portion defines a third interior cavity 234, the body portion including an inlet 236 at an end of the first portion 228 and an outlet 238 at a side of the first portion 228, the second and third interior cavities 232 and 234 each communicating with the exterior through the inlet 236 and the outlet 238. The inlet 236 is adapted to communicate with the water inlet 222 and the outlet 238 is adapted to communicate with the water outlet 218. The first portion 228 may mate with the circumferential wall 216 such that the inner shell 214 is securely engaged with the outer shell 212, or the second portion 230 may mate with the first inner cavity 204 such that the inner shell 214 is securely engaged with the first inner cavity 204. The end of the first portion 228 includes a flange 240. The flange 240 may be located outside the outer shell 212 when the outer shell 212 and the inner shell 214 are fully assembled, such that a user may withdraw the inner shell 214 outwardly by grasping the flange 240 when the inner shell 214 is disassembled. Of course, the user may grasp the first portion 228 to withdraw the inner housing 214 outwardly. The cap 224 may be removably engaged with the flange 240 or the inlet 236 such that the inner housing 214 and the cap 224 may be integrally removably coupled to the outer housing 212.

The impeller 242 is installed in the second inner cavity 232, the rotor 244 is installed in the third inner cavity 234, and the rotating shaft 246 is connected between the impeller 242 and the rotor 244, so that the impeller 242 and the rotor 244 can be integrally assembled and disassembled to the inner shell 214, in this way, the impeller 242 and the rotor 244 can be taken out from the first inner cavity 204 by disassembling the inner shell 214, and then the impeller 242 and the rotor 244 can be taken out from the inner shell 214, so that the impeller 242 and the rotor 244 can be cleaned. The rotor 244 is usually made of permanent magnetic material, and the coil of the motor 202 and the U-shaped iron core (not shown) are disposed around the first inner cavity 204 and the third inner cavity 234, and when the motor 202 is energized, the rotor 244 can rotate in the first inner cavity 204 and the third inner cavity 234 under the action of the magnetic field, so that the impeller 242 is driven to rotate by the rotating shaft 246, so that in this embodiment, the first inner cavity 204 and the third inner cavity 234 can be equivalent to the rotor cavities of other embodiments. The bottom of the third cavity 234 is provided with a positioning groove 248, and one end of the rotating shaft 246 connected to the rotor 244 is inserted into the positioning groove 248 to maintain stability of the impeller 242 and the rotor 244 during rotation. As such, impeller 242, volute, and motor 202 in combination substantially perform the function of a water pump.

A sealing cap 250 is disposed between the second and third lumens 232 and 234, the sealing cap 250 having a shaft hole 252 (shown in fig. 22) at the center thereof, in such a manner that the third lumen 234 is closed from the second lumen 232 except for the shaft hole 252. The rotating shaft 246 is arranged in the shaft hole 252 in a penetrating way, and the sealing ring 254 is used for sealing the gap between the shaft hole 252 and the rotating shaft 246, in this way, water in the second inner cavity 232 cannot enter the third inner cavity 234, and meanwhile hair impurities and the like can be prevented from entering the third inner cavity 234, so that the phenomenon that the rotation of the rotor 244 is stopped due to blockage to stop the water circulation of the pet water fountain 190 in the use process is avoided.

In use, a proper amount of water is poured into the water tank 192, the pet drinking bowl 190 is assembled, the motor 202 is powered on, and at this time, the water in the water tank 192 enters the second cavity 232 through the water inlet 222 and the inlet 236 in sequence under the rotation of the impeller 242, then passes through the impeller 232, the outlet 238, the water outlet 218 and the diversion nozzle 198, and then falls into the drinking water tray 196. After the drinking bowl 196 is full, it can flow back to the tank 192 through the upper cover 194.

One or both of the pet drinking fountain 10, the pet drinking fountain 110, the pet drinking fountain 140, and the pet drinking fountain 190 provided herein have many advantages over the prior art: the water circulation changes the dead water in the water tank into running water; allowing the pet to drink water at different positions; can attract the pet to drink water before; the circulating water can be filtered; a drinking water tray capable of storing a large amount of water is provided; the motor cannot be immersed in water; the impeller can be disassembled and cleaned; multiple filtering functions; the installation is simple; the probability that water cannot be discharged or water is difficult to be discharged due to the fact that the rotor stops rotating due to blockage is reduced; the impeller and the rotor are convenient and simple to detach, and tools are not needed.

The foregoing description of the preferred embodiments of the present application is not intended to be limiting, but is intended to cover any and all modifications, equivalents, and alternatives falling within the spirit and principles of the present application.

Claims (11)

1. A water pump, comprising: a motor having a first interior cavity; a volute comprising an outer housing and an inner housing, an interior region of the outer housing being communicable with the first interior cavity, the inner housing being removably disposable with the outer housing, the inner housing comprising a main body portion having a generally circular recess, the main body portion comprising a first portion receivable in the interior region of the outer housing and a second portion receivable in the first interior cavity, the first portion defining a second interior cavity, the second portion defining a third interior cavity, the main body portion comprising an inlet at an end of the first portion and an outlet at a side of the first portion, the second interior cavity and the third interior cavity each being communicable with the outside through the inlet and the outlet; a water inlet for communicating with the inlet; a water outlet for communicating with the outlet; an impeller removably mounted in the second interior cavity, the impeller downstream of the inlet and upstream of the outlet; and the rotor is connected with the impeller, is detachably arranged in the third inner cavity, and is driven by the motor to rotate and drive the impeller to rotate.

2. The water pump of claim 1, wherein the housing further comprises a circumferential wall, the water outlet being disposed on a tangential and outwardly projecting side of the circumferential wall.

3. The water pump of claim 2, further comprising a cover removably coupled to the housing, the water inlet being disposed on the cover.

4. The water pump of claim 2, wherein the first portion is engageable with the circumferential wall and/or the second portion is engageable with the first interior cavity to securely engage the inner housing with the outer housing or the motor.

5. The water pump of claim 1, wherein the end of the first portion further comprises a flange configured to be positioned on the exterior of the outer housing to externally exert a force on the flange when the outer housing and the inner housing are in assembled engagement.

6. The water pump of claim 1, further comprising a shaft connecting the impeller and the rotor.

7. The water pump of claim 6, wherein a positioning groove is provided at the bottom of the third inner cavity, and one end of the rotating shaft connected with the rotor is inserted into the positioning groove.

8. The water pump of claim 6, wherein a seal cap is disposed between the second and third lumens, the seal cap having a shaft bore in which the shaft passes, the seal cap for preventing water from entering the third lumen.

9. The water pump of claim 8, further comprising a seal ring for sealing a gap between the shaft bore and the shaft.

10. The water pump of claim 1, further comprising a motor chamber having a through-hole, the motor being disposed within the motor chamber, the housing being connected to the motor chamber, an interior region of the housing being in communication with the first interior cavity through the through-hole.

11. A water pump, comprising: a water inlet and a water outlet; a motor having a first interior cavity; a volute comprising an outer housing having an interior region communicable with the first interior cavity and an inner housing removably disposed with the outer housing, the inner housing comprising a body portion having a generally circular concave shape, the body portion comprising a first portion receivable in the interior region of the outer housing and a second portion receivable in the first interior cavity; the impeller and the rotor are detachably arranged in the inner shell, the impeller is positioned at the downstream of the water inlet and at the upstream of the water outlet, and the rotor rotates and drives the impeller to rotate under the driving of the motor.