An easy-to-install centrifugal pump barrel structure

Abstract

This utility model discloses a centrifugal pump barrel structure that is easy to install, including an aluminum barrel. Screw holes are provided on the aluminum barrel at the corresponding mounting positions of the cover box. Connecting screws are installed in the screw holes. The screw holes are un-tapping triangular holes, and the connecting screws are self-tapping screws. The inner diameter of the triangular hole is smaller than the outer diameter of the self-tapping screw. This utility model utilizes the characteristics of the aluminum barrel and adopts a triangular screw hole design that eliminates the need for tapping, allowing self-tapping screws to be driven directly in, thereby saving the tapping process, reducing costs, and improving assembly efficiency.

Description

Technical Field

[0001] This utility model relates to a centrifugal pump barrel structure that is easy to install. Background Technology

[0002] Centrifugal pumps are widely used in agricultural irrigation, industrial conveying, and water treatment. Their main structure includes a motor, pump casing, impeller, and barrel. The barrel is typically made of aluminum and requires screws for connection to the housing. In existing technology, the screw holes on the aluminum barrel for mounting are usually circular and require tapping to create internal threads before they can engage with the screws. This tapping process not only increases processing costs but also reduces production efficiency. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model designs a centrifugal pump barrel structure that is easy to install. Utilizing the characteristics of aluminum barrel, it adopts a triangular screw hole design that does not require tapping, which allows self-tapping screws to be driven directly in, thereby eliminating the tapping process, reducing costs, and improving assembly efficiency.

[0004] The present invention adopts the following technical solution: A centrifugal pump casing structure that is easy to install includes an aluminum casing. A screw hole is provided on the aluminum casing at the mounting position corresponding to the cover box. A connecting screw is installed in the screw hole. The screw hole is an untapping triangular hole. The connecting screw is a self-tapping screw. The inner circle diameter of the triangular hole is smaller than the outer diameter of the self-tapping screw used.

[0005] Preferably, the cross-sectional shape of the triangular hole is an equilateral or isosceles triangle, for direct mating with a self-tapping screw.

[0006] Preferably, the aluminum barrel and the triangular hole are integrally formed by casting.

[0007] Preferably, the triangular hole is a through-hole structure.

[0008] The beneficial effects of this utility model are: (1) By replacing the traditional round hole with a triangular hole, the self-tapping screw can be directly screwed into the aluminum barrel without the need for tapping, which simplifies the processing flow and reduces labor and equipment costs; (2) It improves assembly efficiency, especially suitable for automated mass production, and improves overall manufacturing efficiency while ensuring structural strength and connection reliability. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of a structure in which a triangular hole is connected to a self-tapping screw in this utility model; In the picture: 1. Aluminum barrel, 2. Screw hole. Detailed Implementation

[0010] The technical solution of this utility model will be further described in detail below through specific embodiments and with reference to the accompanying drawings: Example: Figure 1 and Figure 2 As shown, a centrifugal pump casing structure for easy installation includes an aluminum casing 1. Multiple screw holes 2 are provided on the aluminum casing at the corresponding mounting positions of the cover box. Connecting screws are installed in these screw holes. The screw holes are untapped triangular holes, and the connecting screws are self-tapping screws. The inner diameter of the triangular hole is smaller than the outer diameter of the self-tapping screw. The triangular hole is a through-hole structure to ensure the self-cutting capability of the thread.

[0011] The triangular hole has an equilateral or isosceles triangle cross-section and is designed for direct mating with self-tapping screws. The self-tapping screw forms a stable connection during insertion, eliminating the need for tapping.

[0012] The aluminum barrel and triangular holes are integrally cast. The number and position of the holes are consistent with the original design standard round hole installation to ensure interchangeability.

[0013] This invention utilizes the characteristics of aluminum barrels and adopts a triangular screw hole design that eliminates the need for tapping, allowing self-tapping screws to be driven directly in, thereby saving the tapping process, reducing costs, and improving assembly efficiency.

[0014] The embodiments described above are merely preferred solutions of this utility model and are not intended to limit this utility model in any way. Other variations and modifications are possible without departing from the technical solutions described in the claims.

Claims

1. A centrifugal pump casing structure for easy installation, comprising an aluminum casing, wherein screw holes are provided on the aluminum casing at positions corresponding to the mounting positions of the cover box, and connecting screws are installed in the screw holes, characterized in that... The screw hole is an untapping triangular hole, and the connecting screw is a self-tapping screw. The inner diameter of the triangular hole is smaller than the outer diameter of the self-tapping screw used.

2. The centrifugal pump barrel structure for easy installation according to claim 1, characterized in that, The triangular hole has an equilateral or isosceles triangle cross-section and is used to directly mate with a self-tapping screw.

3. The centrifugal pump barrel structure for easy installation according to claim 1, characterized in that, The aluminum barrel and triangular hole are integrally formed by casting.

4. The centrifugal pump casing structure for easy installation according to claim 1, characterized in that, The triangular hole is a through-hole structure.

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