Centrifugal pump structure
By designing a sealing device composed of the inner layer, middle layer and outer layer at the connection between the water inlet end of the centrifugal pump and the pipeline, combined with the integrated molding of the rubber material, the problem of poor sealing performance is solved, and efficient sealing is achieved to prevent water leakage.
Patent Information
- Application Number
- CN202422643070.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2025-08-08
- Estimated Expiration
- 2034-10-30
AI Technical Summary
The sealing performance of the water inlet end of the existing centrifugal pump and the pipe connection is poor, resulting in water leakage problems.
A sealing device consisting of the inner layer, the middle layer and the outer layer is adopted, combined with the integrated molding design of rubber material, and efficient sealing is achieved through threaded connections, and the sealing effect is ensured by the pressing part of the inner layer against the stage and the outer layer.
Improve the sealing performance of the centrifugal pump, prevent water leakage, and enhance the use effect.
Smart Images
Figure CN223203261U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of water pumps and relates to a centrifugal pump, in particular to a centrifugal pump structure. Background Art
[0002] The water inlet of a centrifugal pump is usually connected to the pipe by a threaded connection, and the two are sealed by a sealing ring. However, the sealing ring structure between the two is relatively simple and the sealing performance is not high. Water can easily leak between the pipe and the water inlet, affecting use. Summary of the Invention
[0003] The purpose of the utility model is to provide a high-sealing centrifugal pump structure in response to the above-mentioned problems existing in the prior art.
[0004] The purpose of the utility model can be achieved through the following technical solutions: a centrifugal pump structure, comprising a pump body and a water inlet end formed at the end of the pump body, the water inlet end being connected to an external pipe, characterized in that a sealing device is provided between the water inlet end and the external pipe, the sealing device being composed of an inner layer part, a middle layer part and an outer layer part from left to right, the inner wall of the water inlet end having an outwardly protruding abutting platform for the outer ring of the inner layer part to abut, the flat side of the middle layer part abuts against the end wall of the water inlet end, the outer layer part abuts against the outer end wall of the water inlet end, and the outer ring of the outer layer part has an inwardly protruding pressing part.
[0005] In the above-mentioned centrifugal pump structure, the external pipe is connected to the water inlet end through threads.
[0006] In the above-mentioned centrifugal pump structure, the sealing device is integrally formed and made of rubber.
[0007] Compared with the prior art, the centrifugal pump structure has the advantage of improved sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS
[0008] Figure 1 It is a partial cross-sectional view of the centrifugal pump structure.
[0009] In the figure, 1, pump body; 2, water inlet end; 3, inner layer; 4, middle layer; 5, outer layer; 6, abutment platform; 7, pressing part. DETAILED DESCRIPTION
[0010] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
[0011] like Figure 1As shown, the centrifugal pump structure includes a pump body 1 and a water inlet end 2 formed at the end of the pump body 1, and the water inlet end 2 is connected to an external pipe. It is characterized in that a sealing device is provided between the water inlet end 2 and the external pipe, and the sealing device is composed of an inner layer 3, a middle layer 4 and an outer layer 5 from left to right. The inner wall of the water inlet end 2 has an outwardly protruding abutment platform 6 for the outer ring of the inner layer 3 to abut, the flat side of the middle layer 4 abuts against the end wall of the water inlet end 2, the outer layer 5 abuts against the outer end wall of the water inlet end 2, and the outer ring of the outer layer 5 has an inwardly protruding clamping portion 7.
[0012] Preferably, the external pipe is connected to the water inlet end 2 through threads.
[0013] To elaborate further, the sealing device is integrally formed and made of rubber. The sealing device is inserted into the water inlet end 2 so that each layer is sealed against the water inlet end 2 one by one, and the clamping part 7 is used to achieve positioning to prevent axial displacement of the sealing device. After that, the external pipeline is connected and the sealing device is further compressed to achieve the characteristics of efficient sealing.
[0014] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.
[0015] Although this document frequently uses terms such as pump body 1, water inlet end 2, inner layer 3, middle layer 4, outer layer 5, abutment 6, and pressing portion 7, the use of other terms is not excluded. These terms are used solely to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitations is contrary to the spirit of the present invention.
Claims
1. A centrifugal pump structure, comprising a pump body (1) and a water inlet end (2) formed at the end of the pump body (1), wherein the water inlet end (2) is connected to an external pipe, characterized in that: A sealing device is provided between the water inlet end (2) and the external pipe. The sealing device is composed of an inner layer portion (3), a middle layer portion (4) and an outer layer portion (5) from left to right. The inner wall of the water inlet end (2) has a protruding abutment platform (6) for the outer ring of the inner layer portion (3) to abut against. The flat side of the middle layer portion (4) abuts against the end wall of the water inlet end (2). The outer layer portion (5) abuts against the outer end wall of the water inlet end (2). The outer ring of the outer layer portion (5) has a pressing portion (7) that protrudes inward.
2. A centrifugal pump structure according to claim 1, characterized in that: The external pipe is connected to the water inlet end (2) via threads.
3. A centrifugal pump structure according to claim 1, characterized in that: The sealing device is integrally formed and made of rubber.