Water pump volute

Abstract

The water pump volute comprises a volute body, the volute body comprises a top plate and an annular side wall, a first inner cavity is defined by the top plate and the side wall, a water inlet is formed in the center of the top plate, the side wall protrudes outwards to form a water outlet pipe, and the water outlet pipe and the water inlet are communicated with the first inner cavity. The volute is characterized in that a supporting boss and a plurality of connecting ribs are further arranged at the water inlet, the supporting boss is located in the first inner cavity, the first ends of the connecting ribs are connected with the outer side wall of the supporting boss, the second ends of the connecting ribs are connected with the inner wall of the water inlet, and the supporting boss, the connecting ribs and the volute body are integrally formed. The water pump volute is simple in structure and low in cost, the supporting boss can support the mandrel and limit axial movement of the rotor assembly, and the running reliability of a water pump is improved.

Description

Technical Field

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

[0002] Existing water pumps include a volute, a spindle mounted inside the volute, an impeller mounted on the spindle, and a motor that controls the rotation of the spindle. The volute includes a top plate and an annular sidewall, which together form a first inner cavity. An inlet is located at the center of the top plate, and an outlet pipe protrudes outward from the sidewall, tangential to the sidewall. The outlet pipe and the inlet are connected to the first inner cavity. With this structure, the spindle and motor rotor assembly are prone to axial movement. Utility Model Content

[0003] This utility model provides a water pump volute to solve the problem of axial movement easily occurring in the spindle of the water pump and the rotor assembly of the motor in the prior art.

[0004] The technical solution of this utility model is implemented as follows:

[0005] The purpose of this utility model is to provide a water pump volute, including a volute body, which includes a top plate and an annular sidewall. The top plate and the sidewall form a first inner cavity. An inlet is provided at the center of the top plate, and an outlet pipe protrudes outward from the sidewall. The outlet pipe is tangent to the sidewall and communicates with the inlet in the first inner cavity. The feature is that a supporting boss and several connecting ribs are also provided at the position of the inlet. The supporting boss is located in the first inner cavity. The first end of the connecting rib is connected to the outer sidewall of the supporting boss, and the second end of the connecting rib is connected to the inner wall of the inlet. The supporting boss, the connecting ribs, and the volute body are integrally formed.

[0006] The outer diameter of the aforementioned support boss gradually increases from the water inlet to the first inner cavity, and a support hole is recessed on the inner end face of the support boss.

[0007] The aforementioned support boss has a semi-ellipsoidal shape.

[0008] The inner side of the aforementioned volute body is provided with a second inner cavity between the water inlet and the first inner cavity. The water inlet, the second inner cavity and the first inner cavity are connected and share the same axis. The diameter of the second inner cavity is larger than the diameter of the water inlet and smaller than the diameter of the first inner cavity.

[0009] The inner side of the aforementioned sidewall has a guide protrusion. The first end of the guide protrusion is directly opposite the outlet of the water pipe, and the end of the guide protrusion is located on one side of the water pipe. The width of the guide protrusion gradually increases from the first end to the end.

[0010] The aforementioned top plate has a raised section around the water inlet to form a water inlet pipe, and the second end of the connecting rib extends into the water inlet pipe and connects to the inner wall of the water inlet pipe.

[0011] The top plate described above has several reinforcing ribs on its outer side, and the side wall has several protruding lugs on its outer side, with mounting holes inside the lugs.

[0012] Compared with the prior art, this utility model has the following advantages:

[0013] 1. The water pump volute includes a volute body, which comprises a top plate and an annular sidewall. The top plate and sidewall form a first inner cavity. An inlet is located at the center of the top plate, and an outlet pipe protrudes outward from the sidewall, tangent to the sidewall. The outlet pipe and the inlet are respectively connected within the first inner cavity. The volute is characterized by further including a supporting boss and several connecting ribs. The supporting boss is located within the first inner cavity. The first end of each connecting rib is connected to the outer sidewall of the supporting boss, and the second end of each connecting rib is connected to the inner wall of the inlet. The supporting boss, connecting ribs, and volute body are integrally formed. The water pump volute has a simple structure and low cost. The supporting boss can support the spindle and restrict the axial movement of the rotor assembly, improving the reliability of the water pump operation.

[0014] 2. Other advantages of this utility model are described in detail in the embodiments section. Attached Figure Description

[0015] Figure 1 A schematic diagram of the structure of the water pump volute provided in an embodiment of this utility model;

[0016] Figure 2 A schematic diagram of the pump casing from another angle;

[0017] Figure 3 This is a top view of the pump casing;

[0018] Figure 4 for Figure 3 AA sectional view. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] like Figures 1 to 4As shown, this embodiment provides a water pump volute, including a volute body 1. The volute body includes a top plate 11 and an annular sidewall 12. The top plate 11 and the sidewall 12 form a first inner cavity 10. An inlet 111 is located at the center of the top plate 11. An outlet pipe 13 protrudes outward from the sidewall 12, tangent to the sidewall 12. The outlet pipe 13 and the inlet 111 are respectively connected within the first inner cavity 10. The key feature is that a supporting boss 2 and several connecting ribs 3 are also provided at the position of the inlet 111. The supporting boss 2 is located within the first inner cavity 10. The first end of each connecting rib 3 is connected to the outer sidewall of the supporting boss 2, and the second end of each connecting rib 3 is connected to the inner wall of the inlet 111. The supporting boss 2, the connecting ribs 3, and the volute body 1 are integrally formed. The water pump volute has a simple structure and low cost. The supporting boss 2 can support the spindle and restrict the axial movement of the rotor assembly, improving the reliability of the water pump operation.

[0021] The outer diameter of the aforementioned support boss 2 gradually increases from the water inlet 111 to the first inner cavity 10, and a support hole 21 is recessed on the inner end face of the support boss 2. The support hole 21 can better support the mandrel, and the gradual increase in the outer diameter of the support boss 2 reduces the impact force of the water flow on the support boss 2.

[0022] The aforementioned support boss 2 has a semi-ellipsoidal shape to reduce water flow resistance.

[0023] The inner side of the aforementioned volute body 1 is provided with a second inner cavity 15 between the water inlet 111 and the first inner cavity 10. The water inlet 111, the second inner cavity 15 and the first inner cavity 10 are connected and share the same axis. The diameter of the second inner cavity 15 is larger than the diameter of the water inlet 111 and smaller than the diameter of the first inner cavity 10.

[0024] The inner side of the aforementioned sidewall 12 has a guide protrusion 121. The first end of the guide protrusion 121 is directly opposite the outlet of the water pipe 13, and the second end of the guide protrusion 121 is located on one side of the water pipe 13. The width of the guide protrusion 121 gradually increases from the first end to the second end. The guide protrusion 121 forms a gradually increasing flow channel in the inner cavity 10.

[0025] The top plate 11 mentioned above has a water inlet pipe 14 formed by protruding on the outer side of the water inlet 111. The second end of the connecting rib 3 extends into the water inlet pipe 14 and connects with the inner wall of the water inlet pipe 14.

[0026] The top plate 11 described above is provided with several reinforcing ribs 17 on its outer side to increase structural strength. The side wall 12 has several protruding lugs 16 on its outer side, and each lug 16 has a mounting hole 161.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A water pump casing, comprising a casing body (1), the casing body including a top plate (11) and an annular sidewall (12), the top plate (11) and the sidewall (12) forming a first inner cavity (10), an inlet (111) being provided at the center of the top plate (11), and an outlet pipe (13) protruding outward from the sidewall (12), the outlet pipe (13) and the inlet (111) respectively communicating in the first inner cavity (10), characterized in that: A support boss (2) and several connecting ribs (3) are provided at the water inlet (111). The support boss (2) is located in the first inner cavity (10). The first end of the connecting rib (3) is connected to the outer wall of the support boss (2), and the second end of the connecting rib (3) is connected to the inner wall of the water inlet (111). The support boss (2), the connecting rib (3) and the volute body (1) are integrally formed.

2. The pump casing according to claim 1, characterized in that: The outer diameter of the support boss (2) gradually increases from the water inlet (111) to the first inner cavity (10), and a support hole (21) is recessed on the inner end face of the support boss (2).

3. A water pump casing according to claim 2, characterized in that: The supporting boss (2) is in the shape of a semi-ellipsoid.

4. A water pump casing according to any one of claims 1 to 3, characterized in that: The inner side of the volute body (1) is provided with a second inner cavity (15) between the water inlet (111) and the first inner cavity (10). The water inlet (111), the second inner cavity (15) and the first inner cavity (10) are connected and share the same axis. The diameter of the second inner cavity (15) is larger than the diameter of the water inlet (111) and smaller than the diameter of the first inner cavity (10).

5. A water pump casing according to claim 4, characterized in that: The inner side of the sidewall (12) has a guide protrusion (121). The first end of the guide protrusion (121) is directly opposite the outlet of the water pipe (13), and the end of the guide protrusion (121) is located on one side of the water pipe (13). The width of the guide protrusion (121) gradually increases from the first end to the end.

6. A water pump casing according to claim 4, characterized in that: The top plate (11) protrudes outward from the water inlet (111) to form a water inlet pipe (14), and the second end of the connecting rib (3) extends into the water inlet pipe (14) and connects with the inner wall of the water inlet pipe (14).

7. A water pump casing according to claim 6, characterized in that: The top plate (11) has several reinforcing ribs (17) on its outer side, and the side wall (12) has several lugs (16) protruding from its outer side, with mounting holes (161) inside the lugs (16).

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