water pump

Abstract

A water pump (100) includes a pump body (200) and a pump seat (300) rotatably coupled to the pump body (200). The pump seat (300) is movable away from and toward the pump body (200). The pump body (200) and the pump seat (300) have a mating structure that allows the pump seat (300) to be securely positioned in at least two relative positions when the pump body (200) rotates relative to the pump seat (300). The water pump (100) is characterized in that the pump body (200) has at least one locating rib (222) and the pump seat (300) has at least one mating locating post (306), or vice versa; wherein rotation of the pump body (200) relative to the pump seat (300) causes at least one locating rib (222) to be located on or abut against the locating post (306), thereby allowing the pump body (200) and the pump seat (300) to be positioned relatively differently.

Description

Technical Field

[0001] This disclosure relates to a water pump having a pump body and a pump base, and more particularly to a water pump having a pump base that can move away from and toward the pump body. Background Technology

[0002] A water pump typically includes a pump body that defines an inlet and an outlet. Additionally, the pump includes a motor and an impeller operated by the motor, causing the impeller to draw water in through the inlet. The motor also pressurizes the water entering through the inlet, allowing the pressurized water to be delivered through the outlet for external applications.

[0003] The water pump also includes a pump base that supports the pump on the ground. The pump base further includes a mesh-like suction orifice to allow ambient water to enter the pump body's inlet. However, the ambient water may be clean or dirty, and while the mesh-like suction orifice may allow clean water to enter the inlet, it may not be a perfect solution for allowing dirty water to enter, as the dirty water may contain foreign matter that could clog the mesh-like suction orifice over time. Therefore, for the pump to be used effectively regardless of whether the water is clean or dirty, it is desirable to move the pump base toward and away from the pump body when the water to be pumped is both clean and dirty. This is because when the pump base moves away from the pump body to pump dirty water, the dirty water gains more space to actually seep into the pump body's inlet.

[0004] However, known solutions for moving the pump seat toward and away from the pump body are expensive, bulky, and ergonomic.

[0005] German utility model DE 202,018,106,483 U1 (hereinafter referred to as '483 reference) provides an embodiment of a water pump. Reference '483 provides a pump body, a base, and at least one adjusting mechanism. The at least one adjusting mechanism is located in a circular gap between the pump body and the base. Each adjusting mechanism consists of a stepped hole mounted on the outer wall of the base, a resilient disc disposed on the outer wall of the base, a removable adjusting post disposed on the outer wall of the pump body, and a plurality of adjusting grooves vertically formed on the outer wall of the pump body. The upper side of the resilient disc forms a protrusion to a limited extent into the adjusting groove on one side of the outer wall of the pump body, and the adjusting post is engaged within the stepped hole. Summary of the Invention

[0006] In view of the foregoing, the object of the present invention is to solve or at least reduce the aforementioned disadvantages. This object is achieved, at least in part, by a water pump.

[0007] According to one aspect of the invention, the water pump includes a pump body defining an inlet. The pump also includes a motor for pressurizing water entering through the inlet. Furthermore, the pump body defines an outlet for delivering water pressurized by the motor. Additionally, a pump seat is rotatably coupled to the pump body, wherein the pump seat can move away from and toward the pump body. The pump body and pump seat have a mating structure that allows the pump seat to be securely positioned in at least two relative positions when the pump body rotates relative to the pump seat. The water pump is characterized by the pump body having at least one locating rib and the pump seat having at least one mating locating post, or the pump body having at least one mating locating post and the pump seat having at least one locating rib; wherein rotation of the pump body relative to the pump seat causes at least one locating rib to be positioned on or abut against the locating post, thereby allowing the pump body and pump seat to be positioned relatively differently.

[0008] This disclosure advantageously provides a water pump with two stable dwell positions corresponding to two different operating configurations, which can be seamlessly switched between by the user. The pump seat can be easily moved between the two stable configurations, which can be used for different application scenarios. This structural arrangement makes it easier for the user to switch between different operating configurations. Furthermore, the conversion can be completed very simply and without tools, without any specific tools or equipment. Such an arrangement contributes to the user's fast, efficient, and ergonomic operation of the water pump.

[0009] According to an exemplary embodiment of the invention, the pump body has a stabilizing protrusion and the pump seat has at least two mating recesses, or the pump body has at least two mating recesses and the pump seat has a stabilizing protrusion, such that after the pump body is rotated relative to the pump seat, the pump housing is stably positioned relative to the pump seat. When changing between these two stable positions, the stabilizing protrusion and the at least two mating recesses together advantageously facilitate accurate positioning of the pump seat relative to the pump body.

[0010] According to an exemplary embodiment of the invention, the pump body has a retaining protrusion and the pump seat has a mating and securing recess to prevent relative movement of the pump seat away from the pump body. The retaining protrusion and the mating and securing recess together advantageously ensure that the pump body and the pump seat do not accidentally detach from each other, especially when the pump is lifted off the ground, they will not accidentally detach from each other due to gravity acting on the pump seat.

[0011] According to an exemplary embodiment of the present invention, the pump body has a limiting protrusion and the pump seat has a mating elongated limiting hole, or the pump body has a mating elongated limiting hole and the pump seat has a limiting protrusion, which limits the rotation of the pump body relative to the pump seat. When the user attempts to change between two stable positions, the limiting protrusion and the elongated limiting hole limit the range of rotation of the pump seat relative to the pump body.

[0012] According to an exemplary embodiment of the invention, the area of ​​the end of the limiting protrusion extending from the pump body or pump seat is sized such that the limiting protrusion cannot pass through the limiting hole and subsequently restricts the relative movement of the pump body and pump seat away from each other. This helps to restrain the movement of the pump seat away from the pump body and helps to keep the pump seat and pump body engaged with each other.

[0013] According to an exemplary embodiment of the present invention, the limiting protrusion is removably screwed into the pump body or pump base. The limiting protrusion can be tightened or loosened according to application requirements.

[0014] According to an exemplary embodiment of the invention, rotation of the pump body relative to the pump base defines a first operating configuration when at least one positioning rib is positioned on the positioning post. According to an exemplary embodiment of the invention, the first operating configuration is dirty water operation. Dirty water operation refers to a situation where the water contains impurities larger than a certain size. When at least one positioning rib is positioned on the positioning post, it allows larger impurities to pass through and operates the pump accordingly.

[0015] According to an exemplary embodiment of the invention, rotation of the pump body relative to the pump base defines a second operating configuration when at least one positioning rib is in close proximity to the positioning post. According to an exemplary embodiment of the invention, the second operating configuration is clean water operation. Clean water operation refers to the situation where the water does not contain impurities larger than a certain size. At least one positioning rib, when close to the positioning post, prevents larger impurities from passing through and accordingly operates the water pump.

[0016] Other features and aspects of the invention will be apparent from the following description and drawings. Attached Figure Description

[0017] The invention will be described in more detail with reference to the accompanying drawings, in which: Figure 1 A top perspective view of a water pump according to an exemplary embodiment of the present disclosure is shown; Figure 2 A cross-sectional view of a pump body rotatably coupled to a pump base according to an exemplary embodiment of the present disclosure is shown; Figure 3 A bottom view of a pump body according to an exemplary embodiment of the present disclosure is shown; Figure 4 Another bottom view of a pump body according to an exemplary embodiment of the present disclosure is shown; Figure 5 A perspective view of a pump base according to an exemplary embodiment of the present disclosure is shown; Figure 6 A bottom view of a pump base according to an exemplary embodiment of the present disclosure is shown; Figure 7 A perspective view of a pump in a first operating configuration F1 according to an exemplary embodiment of the present disclosure is shown, wherein the lower portion of the pump body is removed; Figure 8 A top sectional view of a pump in a first operating configuration F1 according to an exemplary embodiment of the present disclosure is shown; Figure 9 Another perspective view of a pump in a second operating configuration F2 according to an exemplary embodiment of the present disclosure is shown, wherein the lower portion of the pump body is removed; Figure 10 A top sectional view of a pump in a second operating configuration F2 according to an exemplary embodiment of the present disclosure is shown; Figure 11 A cross-sectional view of a pump body connected to a pump base in a second operating configuration F2, according to an exemplary embodiment of the present disclosure, is shown; and Figure 12 A cross-sectional view of a pump body connected to a pump base in a first operating configuration F1 according to an exemplary embodiment of the present disclosure is shown. Detailed Implementation

[0018] The invention will be described more fully below with reference to the accompanying drawings, which illustrate exemplary embodiments of the invention incorporating one or more aspects thereof. However, the invention can be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. For example, one or more aspects of the invention can be used in other embodiments and even other types of structures and / or methods. In the drawings, the same reference numerals refer to the same elements.

[0019] Certain terms used herein are for convenience only and should not be construed as limiting the invention. For example, terms such as “upper,” “lower,” “front,” “rear,” “side,” “longitudinal,” “lateral,” “upward,” “downward,” “forward,” “backward,” “left,” “right,” “horizontal,” “vertical,” “above,” “inner,” “outer,” “inward,” “outer,” “top,” “bottom,” “higher,” “above,” “below,” “center,” “middle,” “central,” “between,” “end,” “adjacent,” “near,” “far,” “radial,” “circumferential,” etc., describe only the configurations shown in the accompanying drawings. In practice, components may be oriented in any direction, and therefore, unless otherwise stated, the terms should be understood to include such variations.

[0020] Figure 1A top perspective view of a water pump 100 is shown. The water pump 100 will be interchangeably referred to as pump 100 below. In the illustrated embodiment, pump 100 is a submersible type water pump 100. Pump 100 includes a pump body 200 and a pump base 300 rotatably coupled to the pump body 200. Furthermore, the pump base 300 is movable away from and toward the pump body 200.

[0021] Pump body 200 includes a handle 202 configured to raise or lower pump 100 to enter or exit the water body to be pumped and / or transport pump 100. Additionally, pump body 200 includes a first port 204 connecting pump 100 to a power cable, allowing pump 100 to receive power for its operation via the power cable. Furthermore, pump body 200 includes a second port 206 connecting pump 100 to a float switch cable, the float switch cable further connecting to a float switch (not shown). Additionally, pump body 200 includes a pump housing 208, such that pump housing 208 includes hydraulic devices required for drawing in and pressurizing water.

[0022] Figure 2 A cross-sectional view of a pump body 200 rotatably coupled to a pump base 300 is shown. The pump body 200 defines an inlet 210 and an outlet 212. The inlet 210 is configured to allow water to enter the pump body 200, and the outlet 212 is configured to allow pressurized water to be delivered from the pump body 200. The pump body 200 also includes a pump housing 208, such that the pump housing 208 includes hydraulic devices required to draw in and pressurize water surrounding the pump 100. In other words, the pump 100 (specifically, the pump housing 208 of the pump 100) includes a motor 214 for pressurizing water entering via the inlet 210, and also includes an impeller 216 connected to the motor 214 via a shaft 218, such that the shaft 218 is configured to transmit rotational force of the motor 214 to the impeller 216. Furthermore, the water pressurized by the motor 214 is delivered via the outlet 212 for various applications.

[0023] Figure 3 A bottom view of the pump body 200 is shown. The pump body 200 defines an inlet 210 and an outlet 212. The pump body 200 is secured as a single assembly using three threaded fittings 220. The pump body 200 also has various mating structures configured to mate with corresponding mating structures of the pump seat 300. The pump body 200 has at least one positioning rib 222, at least one protruding channel 226 for at least partially receiving at least one limiting protrusion 224, and at least two mating recesses 228 positioned adjacent to each other, such that one of the two adjacent mating recesses 228 has a retaining recess 230.

[0024] Figure 4Another bottom view of the pump body 200 is shown. The pump body 200 has various mating structures for engaging with corresponding mating structures of the pump seat 300. The pump body 200 has at least one positioning rib 222 and at least one limiting protrusion 224 at least partially received in a corresponding at least one protruding channel 226. The at least one protruding channel 226 is at least one elongated channel designed to at least partially receive at least one limiting protrusion 224. In one embodiment, the protruding channel 226 has threads on its inner side that engage with threads on the outer side of the limiting protrusion 224 to allow the limiting protrusion 224 to be at least partially screwed into the protruding channel 226.

[0025] Furthermore, the pump body 200 has at least two mating recesses 228 arranged adjacent to each other. One of the mating recesses 228 has a retaining recess 230.

[0026] Figure 5 A perspective view of the pump base 300 is shown. The pump base 300 has a support structure 302 having a plurality of legs 304. The support structure 302 is configured to support the pump base 300 and / or the pump 100 on the ground. The pump base 300 also has various mating structures configured to mate with corresponding mating structures of the pump body 200 when the pump body 200 and the pump base 300 are connected to each other. The pump base 300 has at least one positioning post 306 that mates with positioning rib 222, at least one stabilizing protrusion 308 that mates with mating recess 228 and retaining recess 230, and at least one elongated limiting hole 310 that mates with at least one limiting protrusion 224.

[0027] Figure 6 A bottom view of the pump base 300 is shown. The pump base 300 has a suction port 312 configured to allow water to enter the inlet 210 of the pump body 200. The suction port 312 has a circular mesh structure. Furthermore, the pump base 300 has a support structure 302 configured to support the pump base 300 and / or the pump 100 on the ground. The pump base 300 also has various mating structures configured to engage with corresponding mating structures of the pump body 200 when the pump body 200 and the pump base 300 are connected to each other. The pump base 300 has at least one mating positioning post 306, at least one stabilizing protrusion 308, and at least one elongated limiting hole 310.

[0028] Figure 7 A perspective view of pump 100 is shown, with the lower portion of pump body 200 removed. Pump seat 300 is rotatably coupled to pump body 200, allowing pump seat 300 to move away from and toward pump body 200. Figure 7 The pump base 300 is shown as having been moved away from the pump body 200.

[0029] The pump body 200 and pump seat 300 have a mating structure that allows the pump seat 300 to be stably positioned in at least two relative positions when the pump body 200 is rotated relative to the pump seat 300. The pump body 200 has at least one locating rib 222, and the pump seat 300 has at least one mating locating post 306, or the pump body has at least one mating locating post, and the pump seat has at least one locating rib, such that rotation of the pump body 200 relative to the pump seat 300 causes at least one locating rib 222 to be positioned on or abut against the locating post 306, thereby allowing the pump body 200 and pump seat 300 to be positioned relative to each other differently. However, as... Figure 7 As shown, the pump body 200 has at least one positioning rib 222, and the pump base 300 has at least one mating positioning post 306, such that rotation of the pump body 200 relative to the pump base 300 causes at least one positioning rib 222 to be positioned on the positioning post 306. This arrangement defines a first operating configuration "F1". The first operating configuration "F1" is a dirty water operation, in which dirty water enters the pump 100 through a suction port 312 provided in the pump base 300.

[0030] Figure 8 A top sectional view of the pump 100 in a first operating configuration "F1" is shown. In this configuration, at least one positioning rib 222 is located on the positioning post 306, allowing more space for water, particularly dirty water, to enter the pump 100. Furthermore, the pump body 200 has a limiting protrusion 224, and the pump seat 300 has a mating elongated limiting hole 310, thereby limiting rotation of the pump body 200 relative to the pump seat 300.

[0031] In other words, when there is relative rotation between the pump body 200 and the pump base 300, the elongated orifice 310 defines the maximum level of rotation that can occur between them. In other words, when there is relative rotation between the pump body 200 and the pump base 300, the limiting protrusion 224 travels from the first end 314 of the elongated orifice 310 to the second end 316 of the elongated orifice 310, or from the second end of the elongated orifice to the first end of the elongated orifice, such that the limiting protrusion 224 is constrained between the first end 314 and the second end 316 of the elongated orifice 310, thereby limiting the degree of relative rotation that may occur between the pump body 200 and the pump base 300. Figure 8 In the middle, the limiting protrusion 224 travels from the first end 314 of the elongated hole 310 to the second end 316 of the elongated hole 310 to allow the pump 100 to achieve the first operating configuration "F1".

[0032] Furthermore, the pump base 300 has a stabilizing protrusion 308, and the pump body 200 has at least two mating recesses 228, such that after the pump body 200 is rotated relative to the pump base 300, the pump housing 208 is stably positioned relative to the pump base 300. In other words, when the pump body 200 is rotated relative to the pump base 300 to enter the first operating configuration "F1", the pump body 200 remains in the first operating configuration "F1" by being positioned in one of the at least two adjacent mating recesses 228 unless prompted by the user of the pump 100.

[0033] Figure 9 Another perspective view of the pump 100 is shown, in which the lower portion of the pump body 200 is removed. The pump seat 300 is rotatably coupled to the pump body 200, allowing the pump seat 300 to move away from and toward the pump body 200. Figure 9 The pump base 300 is shown moving close to the pump body 200.

[0034] The pump body 200 and the pump base 300 have a mating structure that allows the pump base 300 to be stably positioned in at least two relative positions when the pump body 200 is rotated relative to the pump base 300. However, as Figure 9 As shown, the pump body 200 has at least one positioning rib 222, and the pump base 300 has at least one mating positioning post 306, such that rotation of the pump body 200 relative to the pump base 300 causes at least one positioning rib 222 to abut against the positioning post 306, which defines the second operating configuration "F2". The second operating configuration "F2" is a clean water operation, in which clean water enters the pump 100 through a suction port 312 provided in the pump base 300.

[0035] Figure 10 A top cross-sectional view of the pump 100 in the second operating configuration "F2" is shown. In this configuration, at least one positioning rib 222 abuts against the positioning post 306. Furthermore, the pump body 200 has a limiting protrusion 224, and the pump seat 300 has a mating elongated limiting hole 310, thereby limiting the rotation of the pump body 200 relative to the pump seat 300.

[0036] In other words, when there is relative rotation between the pump body 200 and the pump base 300, the elongated orifice 310 defines the maximum level of rotation that can occur between them. In other words, when there is relative rotation between the pump body 200 and the pump base 300, the limiting protrusion 224 travels from the first end 314 of the elongated orifice 310 to the second end 316 of the elongated orifice 310, or the limiting protrusion travels from the second end of the elongated orifice to the first end of the elongated orifice, such that the limiting protrusion 224 is constrained between the first end 314 and the second end 316 of the elongated orifice 310, thereby limiting the degree of relative rotation that may occur between the pump body 200 and the pump base 300. Figure 10In the middle, the limiting protrusion 224 travels from the second end 316 of the elongated hole 310 to the first end 314 of the elongated hole 310 to allow the pump 100 to achieve the second operating configuration "F2".

[0037] Furthermore, the pump base 300 has a stabilizing protrusion 308, and the pump body 200 has at least two mating recesses 228, such that after the pump body 200 is rotated relative to the pump base 300, the pump housing 208 is securely positioned relative to the pump base 300. In other words, when the pump body 200 is rotated relative to the pump base 300 to enter the second operating configuration "F2", unless the user of the pump 100 causes it to return to the first operating configuration "F1" by lifting and subsequently rotating the pump body 200, the pump body 200 remains in the second operating configuration "F2" due to being positioned in one of the at least two mating recesses 228 adjacent to each other. In addition, the recesses 228 responsible for holding the pump 100 in the second operating configuration "F2" also include retaining recesses 230. The engagement of the stabilizing protrusion 308 and the retaining recesses 230 ensures that the pump body and the pump base will not accidentally detach from each other, especially when the pump is lifted from the ground, it will not accidentally detach from each other due to the gravity acting on the pump base.

[0038] In other words, the pump body 200 has a retaining notch 230, and the pump seat 300 has a mating, securing protrusion 308 that prevents relative movement of the pump seat 300 away from the pump body 200. In other words, when the pump 100 is in the second operating configuration "F2", the engagement between the retaining notch 230 and the mating, securing protrusion 308 prevents the pump seat 300 from falling freely, particularly preventing it from falling freely due to gravity acting on the pump seat when the pump is lifted from the ground.

[0039] Figure 11 A cross-sectional view of the pump body 200 connected to the pump base 300 is shown in the second operating configuration "F2". In this configuration, the inlet 210 of the pump body 200 is located directly above the suction port 312 of the pump base 300, such that the inlet 210 of the pump body 200 is located on the suction port 312 of the pump base 300.

[0040] In addition, the pump body 200 has a limiting protrusion 224, and the pump seat 300 has a matching elongated limiting hole 310, so that the limiting protrusion 224 can be removably screwed into the pump body 200 via the elongated limiting hole 310.

[0041] The area of ​​the end portion 232 of the limiting protrusion 224 extending from the pump body 200 is sized such that the limiting protrusion 224 cannot pass through the limiting hole 310 and subsequently restricts the relative movement of the pump body 200 and the pump seat 300 away from each other. In other words, the limiting hole 310 includes a mouth portion 318 that does not allow the end portion 232 of the limiting protrusion 224 to reach the outside of the limiting hole 310, and thus limits the maximum vertical distance that the pump seat 300 can move away from the pump body 200.

[0042] exist Figure 11 In the second operating configuration "F2", the pump 100 is moved toward the pump body 200 and the end 232 of the limiting protrusion 224 is positioned close to the bottom of the limiting hole 310.

[0043] Figure 12 A cross-sectional view of the pump body 200 connected to the pump base 300 is shown in the first operating configuration "F1". In this configuration, the inlet 210 of the pump body 200 is located directly above the suction port 312 of the pump base 300, such that the inlet 210 of the pump body 200 is positioned away from the suction port 312 of the pump base 300.

[0044] In addition, the pump body 200 has a limiting protrusion 224, and the pump seat 300 has a matching elongated limiting hole 310, so that the limiting protrusion 224 can be removably screwed into the pump body 200 via the elongated limiting hole 310.

[0045] The area of ​​the end portion 232 of the limiting protrusion 224 extending from the pump body 200 is sized such that the limiting protrusion 224 cannot pass through the limiting hole 310 and subsequently restricts the relative moving away movement of the pump body 200 and the pump base 300. In other words, the limiting hole 310 includes a mouth portion 318 that does not allow the end portion 232 of the limiting protrusion 224 to reach the outside of the limiting hole 310, and thus limits the maximum vertical distance that the pump base 300 can move away from the pump body 200.

[0046] exist Figure 12 In this configuration, pump 100 is in the first operating configuration "F1", such that pump seat 300 has been moved from pump body 200 to the maximum possible extent. Furthermore, in this configuration, the end 232 of the limiting protrusion 224 is located on the underside of the nozzle portion 318, which prevents the end 232 of the limiting protrusion 224 from reaching the outside of the limiting hole 310.

[0047] Exemplary embodiments and examples of the invention have been disclosed in the accompanying drawings and description, and although specific terminology has been used, it is used in a general and descriptive sense only and not to limit the scope of the invention as set forth in the appended claims.

[0048] Component list

[0049] 100 water pumps

[0050] 200 Pump Body

[0051] 202 Handle

[0052] 204 First Port

[0053] 206 Second Port

[0054] 208 Pump casing

[0055] 210 Inlet

[0056] 212 Outlet

[0057] 214 motor

[0058] 216 Impeller

[0059] 218 shafts

[0060] 220 threaded parts

[0061] 222 Positioning Rib

[0062] 224 Limiting protrusion

[0063] 226 Prominent Passage

[0064] 228 Notch

[0065] 230 Keep the notch

[0066] 232 end

[0067] 300 Pump Base

[0068] 302 Supporting Structure

[0069] 304 outriggers

[0070] 306 positioning post

[0071] 308 Stable protrusion

[0072] 310 Slender limiting hole

[0073] 312 Suction port

[0074] 314 First End

[0075] 316 Second End

[0076] 318 Mouth section

[0077] F1 First Operation Configuration

[0078] F2 Second Operation Configuration.

Claims

1. A water pump (100), comprising: Pump body (200), with a defined inlet (210); The motor (214) pressurizes the water entering through the inlet (210); The pump body (200) also defines an outlet (212) for delivering water pressurized by the motor (214); A pump seat (300) is rotatably connected to the pump body (200), wherein the pump seat (300) is movable away from and toward the pump body (200); The pump body (200) and the pump seat (300) have a mating structure, which allows the pump seat (300) to be stably positioned in at least two relative positions when the pump body (200) rotates relative to the pump seat (300). Its features are: The pump body (200) has at least one positioning rib (222), and the pump base (300) has at least one mating positioning post (306), or vice versa; The rotation of the pump body (200) relative to the pump base (300) causes the at least one positioning rib (222) to be located on or close to the positioning post (306), thereby allowing the pump body (200) and the pump base (300) to be positioned relatively differently.

2. The water pump (100) of claim 1, wherein, The pump body (200) has a sturdy protrusion (308), and the pump seat (300) has at least two mating recesses (228), or conversely, such that after the pump body (200) is rotated relative to the pump seat (300), the pump housing (208) is stably positioned relative to the pump seat (300).

3. The water pump (100) according to claim 1, wherein, The pump body (200) has a retaining recess (230), and the pump seat (300) has a mating and securing protrusion (308) that prevents relative movement of the pump seat (300) away from the pump body (200).

4. The water pump (100) according to claim 1, wherein, The pump body (200) has a limiting protrusion (224), and the pump seat (300) has a matching elongated limiting hole (310), or conversely, the limiting hole restricts the rotation of the pump body (200) relative to the pump seat (300).

5. The water pump (100) according to claim 4, wherein, The area of ​​the end (232) of the limiting protrusion (224) extending from the pump body (200) or the pump seat (300) is set such that the limiting protrusion (224) cannot pass through the limiting hole (310) and subsequently restricts the relative movement of the pump body (200) and the pump seat (300).

6. The water pump (100) according to claim 4 or 5, wherein, The limiting protrusion (224) can be removably screwed into the pump body (200) or the pump base (300).

7. The water pump (100) according to any one of the preceding claims, wherein, The rotation of the pump body (200) relative to the pump base (300) defines a first operating configuration (F1) when at least one positioning rib (222) is located on the positioning post (306).

8. The water pump (100) according to claim 7, wherein, The first operation configuration (F1) is the dirty water operation.

9. The water pump (100) according to any one of the preceding claims, wherein, The rotation of the pump body (200) relative to the pump base (300) defines a second operating configuration (F2) when at least one positioning rib (222) is close to the positioning post (306).

10. The water pump (100) according to claim 9, wherein, The second operation configuration (F2) is the clean water operation.

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