Anti-rotation structure of bearing seat for canned motor pump

Abstract

The application relates to a rotation-preventing structure of a bearing seat of a canned pump, which comprises a bearing seat, a pump body and a fixing piece. The pump body is provided with a containing groove for limiting the position of the bearing seat on the pump body, and the fixing piece is used for axially fixing the bearing seat on the pump body. The application has the advantages that the bearing seat is locked to the pump body through screws, the rotation prevention can be guaranteed through axial compression and screw locking, the double rotation-preventing structure guarantees the reliability of the structure, the canned pump cover on the motor can be used as a thin-wall punched part in the case that the bearing seat is made of a cast steel part, and the product cost is lower.

Description

Technical Field

[0001] This application relates to the technical field of circulating water pumps, and in particular to an anti-rotation structure for a canned motor pump bearing housing. Background Technology

[0002] In shielded circulating low-power water pumps, the anti-rotation mechanism relies on axial compression of the bearing housing at the pump body end. However, this method poses a risk of anti-rotation failure in high-power water pumps. In shielded circulating high-power water pumps (such as chemical pumps), the bearing housing at the pump body end is generally made of cast steel and is locked to the motor shielding cover with screws. However, the motor shielding cover needs to be a heavy machined or cast steel part to ensure that the bearing housing is locked to the motor. This method results in higher production costs. Utility Model Content

[0003] To address the shortcomings of existing technologies, one of the objectives of this application is to provide an anti-rotation structure for a canned motor pump bearing housing. This structure features a bearing housing that is screwed onto the pump body, and anti-rotation is ensured by axial clamping and screw locking. This dual anti-rotation structure guarantees structural reliability. Furthermore, when the bearing housing is made of cast steel, the canned motor pump cover can be made of a thin-walled stamped part, resulting in lower product costs.

[0004] The above-mentioned objective of this application is achieved through the following technical solution:

[0005] An anti-rotation structure for a canned motor pump bearing housing includes a bearing housing, a pump body, and a fixing member. The pump body is provided with a receiving groove for defining the position of the bearing housing on the pump body, and the fixing member is used to axially fix the bearing housing on the pump body.

[0006] By adopting the above technical solution, the receiving groove defines the position of the bearing seat on the pump body, and the fixing component axially fixes the bearing seat on the pump body. This ensures the anti-rotation of the bearing seat through axial clamping and positioning by the fixing component. The double anti-rotation structure ensures the reliability of the structure, allowing the shielded pump cover on the motor to use thin-walled stamped parts, thereby controlling the product cost.

[0007] In a preferred embodiment, this application can be further configured such that: the bearing housing is provided with a through hole 1, the pump body is provided with a connecting hole, and the fixing member is connected through the through hole 1 and the connecting hole.

[0008] By adopting the above technical solution, the fastener can pass through the through hole and the connecting hole to fix the bearing seat to the pump body. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of an embodiment of this application.

[0010] Figure 2 This is a cross-sectional structural diagram of an embodiment of this application.

[0011] Reference numerals: 1. Bearing housing; 11. Through hole one; 2. Pump body; 21. Receiving groove; 22. Connecting hole; 3. Fixing component. Detailed Implementation

[0012] The present application will be further described in detail below with reference to the accompanying drawings.

[0013] Reference Figure 1 and Figure 2 This application discloses an anti-rotation structure for a canned pump bearing housing, comprising a bearing housing 1, a pump body 2, and a fixing member 3. The pump body 2 is provided with a receiving groove 21 and a connecting hole 22, and the bearing housing 1 is provided with a through hole 11. The receiving groove 21 is used to limit the position of the bearing housing 1 on the pump body 2. The fixing member 3 is connected to the connecting hole 22 through the through hole 11, thereby limiting the relative position of the bearing housing 1 and the pump body 2. In this embodiment, the number of connecting holes 22 can be set according to actual needs, and the number of through holes 11 corresponds to the number of connecting holes 22. The fixing member 3 can be a screw, which passes through the through hole 11 and is threadedly connected to the pump body 2, thereby fixing the bearing housing 1 to the pump body 2.

[0014] The implementation principle of this embodiment is as follows: the receiving groove 21 defines the position of the bearing seat 1 on the pump body 2, and the fixing member 3 fixes the bearing seat 1 axially on the pump body 2, so that the anti-rotation of the bearing seat 1 is guaranteed by axial clamping and positioning by the fixing member 3. The double anti-rotation structure ensures the reliability of the structure, so that the shielded pump cover on the motor can use thin-walled stamped parts, thereby controlling the product cost.

[0015] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An anti-rotation structure for a canned motor pump bearing housing, characterized in that: It includes a bearing housing (1), a pump body (2) and a fixing member (3). The pump body (2) is provided with a receiving groove (21) for defining the position of the bearing housing (1) on the pump body (2). The fixing member (3) is used to axially fix the bearing housing (1) on the pump body (2).

2. The anti-rotation structure for a canned pump bearing housing according to claim 1, characterized in that: The bearing housing (1) is provided with a through hole (11), the pump body (2) is provided with a connecting hole (22), and the fixing part (3) is connected through the through hole (11) and the connecting hole (22).

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