Pump

Abstract

The utility model relates to a pump which comprises a volute which comprises a volute body and a first flange, and the first flange is connected to the peripheral face of the volute body. The volute is provided with a first volute chamber groove; the bearing seat comprises a bearing seat body and a second flange, and the second flange is connected to the peripheral surface of the bearing seat body; a second volute chamber groove is formed in one end of the bearing seat body, and the first volute chamber groove and the second volute chamber groove are symmetrical about a groove opening of the volute chamber groove; the first volute chamber groove and the second volute chamber groove form a volute chamber; the motor shell comprises a motor shell body and a third flange, and the third flange is connected to the peripheral surface of the motor shell body; the bearing seat body is located in the motor shell body and the volute body. The first flange, the second flange and the third flange are sequentially arranged in the axial direction of the pump and connected through connecting pieces. The pump is high in efficiency, low in noise, easy to assemble and high in assembly efficiency.

Description

Technical Field

[0001] This utility model relates to the field of pump technology, and in particular to a pump. Background Technology

[0002] In existing technologies, due to limitations in mold manufacturing processes, the cross-sectional shape of the volute chamber along the pump axis is asymmetrical, meaning the volute chamber is asymmetrical about the plane perpendicular to the motor axis. This asymmetrical volute chamber shape affects the pressure distribution within the volute chamber, generating radial forces. Furthermore, this asymmetrical volute chamber shape leads to vortex losses, affecting pump efficiency and causing vibration and noise problems.

[0003] In the existing technology, there are also separate volutes. Although the volute chamber of the volute is symmetrical about the plane perpendicular to the motor axis, the installation is complicated. Utility Model Content

[0004] The purpose of this invention is to provide a pump that solves at least one of the aforementioned technical problems.

[0005] To achieve the above objectives, this utility model provides a pump, comprising:

[0006] The volute includes a volute body and a first flange, the first flange being connected to the outer peripheral surface of the volute body; the volute has a first volute chamber groove.

[0007] The bearing housing includes a bearing housing body and a second flange, the second flange being connected to the outer peripheral surface of the bearing housing body; a second volute groove is provided at one end of the bearing housing body, the first volute groove and the second volute groove are symmetrical about the groove opening of the volute groove; the volute cover is provided on the bearing housing, the first volute groove and the second volute groove are engaged to form a volute;

[0008] The motor housing includes a motor housing body and a third flange, the third flange being connected to the outer peripheral surface of the motor housing body; the bearing housing body is located within the motor housing body and the volute body; the first flange, the second flange, and the third flange are arranged sequentially along the axial direction of the pump and connected by a connector.

[0009] Optionally, the volute body includes a first mouth ring and a first body, the first body being connected to one end of the first mouth ring, and the first volute groove being formed on the first body.

[0010] Optionally, the bearing housing body includes a second retaining ring and a second body, the second body being connected to one end of the second retaining ring, the second volute groove being formed on the second body, and the second body being located inside the second retaining ring.

[0011] Optionally, a first sealing ring is provided between the first mouth ring and the second mouth ring.

[0012] Optionally, the first body is further provided with a first impeller chamber groove, which is located radially inside the first volute groove and communicates with the first volute groove.

[0013] The second body is also provided with a second impeller chamber groove, which is located on the radial inner side of the second volute groove and communicates with the second volute groove;

[0014] The first impeller chamber groove and the second impeller chamber groove form an impeller chamber.

[0015] Optionally, the volute further includes a third inlet ring, which is connected to the end of the second body away from the first inlet ring. The third inlet ring forms the water inlet of the pump, and the water inlet communicates with the first impeller chamber groove.

[0016] Optionally, the bearing housing further includes a fourth sealing ring, which is connected to the side of the second flange away from the bearing housing body, and a second sealing ring is provided between the fourth sealing ring and the motor housing body.

[0017] Optionally, the pump further includes a rotating shaft and a bearing, wherein the bearing is sleeved on the rotating shaft and the bearing housing is sleeved on the bearing.

[0018] Optionally, the pump further includes an impeller, which is fixedly connected to the shaft and located in the impeller chamber.

[0019] Optionally, the volute is integrally formed; and / or,

[0020] The bearing housing is integrally formed; and / or,

[0021] The motor housing body and the third flange are integrally formed.

[0022] As can be seen from the above, the technical solution provided by this utility model features symmetrical openings of the first and second volute grooves with respect to the volute groove, i.e., symmetrical openings of the volute grooves, thereby improving the overall pump efficiency and reducing pump noise and vibration. The volute is formed by connecting the volute housing and the bearing housing. The upper half of the volute (the first volute groove) is placed on the volute housing, and the lower half (the second volute groove) is placed on the bearing housing. Simultaneously, the lower half of the volute is completely located within the space enclosed by the volute housing and the motor housing, reducing the axial dimension of the pump. The first flange, second flange, and third flange are simultaneously connected by a connector to achieve concentric positioning, simplifying pump assembly and increasing assembly efficiency. Attached Figure Description

[0023] Figure 1 This is a cross-sectional view of the pump provided in an embodiment of this utility model.

[0024] In the picture:

[0025] 1. Volute casing; 11. Volute casing body; 111. First inlet ring; 112. First body; 12. First flange; 13. First volute chamber groove; 14. First impeller chamber groove; 15. Third inlet ring;

[0026] 2. Bearing housing; 21. Bearing housing body; 211. Second bearing ring; 212. Second body; 22. Second flange; 23. Second volute groove; 24. Second impeller chamber groove; 25. Fourth bearing ring;

[0027] 3. Motor housing; 31. Motor housing body; 32. Third flange;

[0028] 4. Connecting component; 5. First sealing ring; 6. Second sealing ring;

[0029] 7. Volute; 8. Inlet; 9. Shaft; 10. Bearing; 20. Impeller chamber; 30. Impeller. Detailed Implementation

[0030] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely for explaining this utility model and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to this utility model are shown in the accompanying drawings, not all of them.

[0031] This utility model defines certain directional terms. Unless otherwise stated, the directional terms used, such as "up", "down", "left", "right", "inner", and "outer", are used for ease of understanding and therefore do not constitute a limitation on the scope of protection of this utility model.

[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] This embodiment provides a pump, which can be a water pump, a centrifugal pump, a circulating pump, etc.

[0035] like Figure 1 As shown, the pump provided in this embodiment includes a volute 1, a bearing housing 2, and a motor housing 3.

[0036] in,

[0037] The volute 1 includes a volute body 11 and a first flange 12. The first flange 12 is connected to the outer peripheral surface of the volute body 11. For example, the first flange 12 is connected to the outer peripheral surface of the lower end of the volute body 11. The volute 1 has a first volute groove 13.

[0038] The bearing housing 2 includes a bearing housing body 21 and a second flange 22. The second flange 22 is connected to the outer peripheral surface of the bearing housing body 21. For example, the second flange 22 is connected to the outer peripheral surface of the lower end of the bearing housing body 21. A second volute groove 23 is provided at one end of the bearing housing body 21. The second volute groove 23 and the first volute groove 13 are directly opposite each other. The first volute groove 13 and the second volute groove 23 are symmetrical about the groove opening of the volute groove. In other words, the first volute groove 13 and the second volute groove 23 are symmetrical about a surface perpendicular to the pump axis. The groove openings of the first volute groove 13 and the second volute groove 23 are located on the aforementioned surface. The volute 1 is covered by the bearing housing 2. The first volute groove 13 and the second volute groove 23 are fastened together to form a volute 7. That is, the volute 1 is located on the upper side of the bearing housing 2 and is covered by the bearing housing 2. The first volute groove 13 and the second volute groove 23 surround and form the volute 7.

[0039] The motor housing 3 includes a motor housing body 31 and a third flange 32, the third flange 32 being connected to the outer circumferential surface of the motor housing body 31; the bearing housing body 21 is located inside the motor housing body 31 and the volute body 11; the first flange 12, the second flange 22 and the third flange 32 are arranged sequentially along the axial direction of the pump and are connected by a connector 4. The connector 4 can be a bolt.

[0040] It is understood that in this embodiment, "up" and "down" are relative to... Figure 1 In other words, the inner side is the side closer to the central axis of the pump's shaft 9 compared to the outer side.

[0041] In this embodiment, the first volute groove 13 and the second volute groove 23 are symmetrical about the groove opening of the volute groove, that is, the volute 7 is symmetrical about the groove opening of the volute groove, thereby improving the efficiency of the entire pump and reducing the noise and vibration of the pump. The volute 7 is formed by connecting the volute housing 1 and the bearing seat 2. The upper half of the volute 7 (the first volute groove 13) is placed on the volute housing 1, and the lower half (the second volute groove 23) is placed on the bearing seat 2. At the same time, the lower half of the volute 7 is completely located inside the space enclosed by the volute housing 1 and the motor housing 3, reducing the axial dimension of the pump. The first flange 12, the second flange 22 and the third flange 32 are connected by the connector 4 to achieve concentric positioning, which simplifies the assembly of the pump and increases the assembly efficiency.

[0042] Optionally, the outer contour of the longitudinal section (section along the central axis) of the first volute groove 13 and the second volute groove 23 is arc-shaped. In other optional embodiments, the outer contour of the longitudinal section (section along the axial direction) of the first volute groove 13 and the second volute groove 23 can also be a part of a square or two sides of a triangle, as long as the first volute groove 13 and the second volute groove 23 are symmetrical about the groove opening of the volute groove.

[0043] The volute body 11 includes a first opening ring 111 and a first body 112, wherein the first body 112 is connected to one end of the first opening ring 111, such as... Figure 1 As shown, the first body 112 is connected to the upper end of the first inlet ring 111. The first volute groove 13 is formed on the first body 112. The first inlet ring 111 is an axially extending ring structure, and the first body 112 extends axially and radially to form the first volute groove 13 thereon.

[0044] The bearing housing body 21 includes a second retaining ring 211 and a second body 212, the second body 212 being connected to one end of the second retaining ring 211, such as... Figure 1 As shown, the second body 212 is connected to the upper end of the second inlet ring 211. The second volute groove 23 is formed on the second body 212, which is located inside the second inlet ring 211, thereby reducing the axial dimension of the bearing housing 2 and making the pump structure compact. Furthermore, the second body 212 does not protrude from the second inlet ring 211 in the axial direction.

[0045] The second ring 211 is an axially extending ring structure, and the second body 212 extends axially and radially to form a second volute groove 23 thereon.

[0046] A first sealing ring 5 is provided between the first ring 111 and the second ring 211. The first ring 111 and the second ring 211 facilitate the installation of the first sealing ring 5 and ensure the sealed connection between the bearing housing 2 and the volute 1.

[0047] The bearing housing 2 also includes a fourth retaining ring 25, which is connected to the side of the second flange 22 away from the bearing housing body 21, such as... Figure 1 As shown, the fourth ring 25 is connected to the lower side of the second flange 22.

[0048] A second sealing ring 6 is provided between the fourth sealing ring 25 and the motor housing body 31. The fourth sealing ring 25 facilitates the installation of the second sealing ring 6 and ensures a seal between the bearing seat 2 and the motor housing 3.

[0049] The first body 112 is also provided with a first impeller chamber groove 14, which is located on the radial inner side of the first volute groove 13 and is connected to the first volute groove 13.

[0050] The second body 212 also has a second impeller chamber groove 24, which is located radially inside the second volute groove 23 and communicates with it. The first impeller chamber groove 14 and the second impeller chamber groove 24 form the impeller chamber 20.

[0051] Since the first impeller chamber groove 14 is connected to the first volute groove 13, and the second impeller chamber groove 24 is connected to the second volute groove 23, the first volute 7 and the first impeller chamber 20 are connected. The impeller chamber 20 is located on the first body 112 and the second body 212, making it easier to form.

[0052] The volute 1 also includes a third opening ring 15, which is connected to the end of the first body 112 away from the first opening ring 111, such as... Figure 1 As shown, the third ring 15 is connected to the upper end of the first body 112.

[0053] The third ring 15 forms the pump inlet 8, which is connected to the first impeller chamber groove 14.

[0054] The first body 112 has a first opening at its center, through which the water inlet 8 and the first impeller chamber groove 14 are connected. The first opening is coaxial with the first body 112 and extends axially through the first body 112 to connect the water inlet 8 and the impeller chamber 20.

[0055] The pump also includes a rotating shaft 9 and a bearing 10, with the bearing 10 sleeved outside the rotating shaft 9 and a bearing housing 2 sleeved outside the bearing 10. The pump also includes an impeller 30, which is fixedly connected to the rotating shaft 9 and located within the impeller chamber 20. The rotating shaft 9 can be driven to rotate, thereby driving the impeller 30 to rotate. The rotation of the impeller 30 draws water entering through the inlet 8 into the volute chamber 7. After flowing through the volute chamber 7, the water flows out from the pump's outlet.

[0056] The second body 212 is also provided with a second opening, which is coaxial with the second body 212 and extends through the second body 212 along the axial direction so that the rotating shaft 9 passes through the second body 212.

[0057] Optionally, the volute 1 is integrally formed, such as by casting or injection molding.

[0058] Optionally, the bearing housing 2 is integrally formed, such as by casting or injection molding.

[0059] For example, the motor housing body 31 and the third flange 32 are integrally formed, such as by casting or injection molding.

[0060] Although the present invention has been described in detail above with general descriptions, specific embodiments, and experiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A pump, characterized in that, include: The volute (1) includes a volute body (11) and a first flange (12), the first flange (12) being connected to the outer peripheral surface of the volute body (11); the volute (1) has a first volute groove (13); The bearing housing (2) includes a bearing housing body (21) and a second flange (22), the second flange (22) being connected to the outer peripheral surface of the bearing housing body (21); a second volute groove (23) is provided at one end of the bearing housing body (21), the first volute groove (13) and the second volute groove (23) being symmetrical about the opening of the volute groove; the volute shell (1) is covered on the bearing housing (2), the first volute groove (13) and the second volute groove (23) being engaged to form a volute (7); The motor housing (3) includes a motor housing body (31) and a third flange (32), the third flange (32) being connected to the outer peripheral surface of the motor housing body (31); the bearing seat body (21) is located inside the motor housing body (31) and the volute body (11); the first flange (12), the second flange (22) and the third flange (32) are arranged sequentially along the axial direction of the pump and connected by a connector (4).

2. The pump according to claim 1, characterized in that, The volute body (11) includes a first mouth ring (111) and a first body (112), the first body (112) being connected to one end of the first mouth ring (111), and the first volute groove (13) being formed on the first body (112).

3. The pump according to claim 2, characterized in that, The bearing housing body (21) includes a second inlet ring (211) and a second body (212). The second body (212) is connected to one end of the second inlet ring (211), and the second volute groove (23) is formed on the second body (212). The second body (212) is located inside the second inlet ring (211).

4. The pump according to claim 3, characterized in that, A first sealing ring (5) is provided between the first mouth ring (111) and the second mouth ring (211).

5. The pump according to claim 3, characterized in that, The first body (112) is also provided with a first impeller chamber groove (14), which is located on the radial inner side of the first volute groove (13) and communicates with the first volute groove (13). The second body (212) is also provided with a second impeller chamber groove (24), which is located on the radial inner side of the second volute groove (23) and communicates with the second volute groove (23); The first impeller chamber groove (14) and the second impeller chamber groove (24) form an impeller chamber (20).

6. The pump according to claim 5, characterized in that, The volute (1) also includes a third inlet ring (15), which is connected to the end of the second body (212) away from the first inlet ring (111). The third inlet ring (15) forms the water inlet (8) of the pump, which is connected to the first impeller chamber groove (14).

7. The pump according to claim 3, characterized in that, The bearing housing (2) further includes a fourth ring (25), which is connected to the side of the second flange (22) away from the bearing housing body (21). A second sealing ring (6) is provided between the fourth ring (25) and the motor housing body (31).

8. The pump according to claim 5, characterized in that, The pump also includes a rotating shaft (9) and a bearing (10), the bearing (10) being sleeved on the rotating shaft (9) and the bearing seat (2) being sleeved on the bearing (10).

9. The pump according to claim 8, characterized in that, The pump also includes an impeller (30), which is fixedly connected to the rotating shaft (9) and located in the impeller chamber (20).

10. The pump according to any one of claims 1-9, characterized in that, The volute (1) is integrally formed; and / or, The bearing housing (2) is integrally formed; and / or, The motor housing body (31) and the third flange (32) are integrally formed.

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