Long-shaft submerged pump with mechanical sealing structure convenient to disassemble
By designing a mechanical seal structure that is easy to disassemble in a long-axis liquid pump, and using the steel intermediate coupling and clearance design, the problem of difficult replacement of mechanical seals is solved, and the convenience and efficiency of replacement are improved.
Patent Information
- Application Number
- CN202421447594.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-24
- Publication Date
- 2025-05-09
- Estimated Expiration
- 2034-06-24
AI Technical Summary
During the use of the long-axis liquid pump, it is difficult to replace the mechanical seal, and it requires disassembly of the motor, motor base and rigid coupling, which consumes a lot of labor costs.
A long-axis liquid-lower pump that is convenient for disassembling the mechanical seal structure is designed. By setting a steel central coupling between the pump body and the motor base, and setting a gap between the motor rotating shaft and the pump shaft, the moving ring of the mechanical seal can be removed from the gap, avoiding the disassembly of the motor and the motor base.
It realizes convenient replacement of mechanical seals, reduces labor costs, and improves replacement efficiency.
Smart Images
Figure CN222848389U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of long-shaft submersible pumps, in particular to a long-shaft submersible pump with a mechanical sealing structure that is easy to disassemble. Background Art
[0002] During the use of long-axis submersible pumps, there is a problem of difficulty in replacing mechanical seals. Since mechanical seals are easy to wear, once water leakage occurs during use, they need to be replaced in time. During the replacement process, the motor, motor seat, rigid coupling, and mechanical seal gland need to be removed before the mechanical seal can be replaced. This replacement method often requires lifting equipment. If there is no lifting equipment, it will cost a lot of manpower costs. Utility Model Content
[0003] In view of the defects in the prior art, the utility model provides a long-axis submersible pump with an easily disassembled mechanical seal structure, and the structure can improve the convenience of replacing the mechanical seal.
[0004] A long-axis submersible pump with an easily disassembled mechanical seal structure comprises a pump body, a motor seat, a mechanical seal gland, a mechanical seal, a rigid split coupling and a motor, wherein the pump body is connected to the motor seat, the motor seat is connected to the motor, the rotating shaft of the motor and the pump shaft of the pump body are connected in the motor seat through the rigid split coupling, the dynamic ring of the mechanical seal is sleeved on the pump shaft, the static ring of the mechanical seal is mounted on the mechanical seal gland, the mechanical seal gland is detachably connected to the pump body, and the gap height between the rotating shaft of the motor and the pump shaft is greater than the height of the dynamic ring of the mechanical seal.
[0005] Preferably, the height of the gap between the motor rotating shaft and the pump shaft is equal to the height of the mechanical seal.
[0006] Preferably, the mechanical seal gland is connected to the pump body by bolts.
[0007] Preferably, the height of the mechanical seal gland is smaller than the height of the mechanical seal.
[0008] The beneficial effects of the present invention are embodied in the following: through the cooperation of various components in the present technical scheme, after the mechanical seal is damaged, the rigid split coupling is first removed, and then the bolts on the mechanical seal cover are unscrewed to separate the mechanical seal cover from the pump body, and the mechanical seal cover is moved upward to be taken out from the gap between the rotating shaft of the motor and the pump shaft, the static ring of the mechanical seal is taken out together with the mechanical seal cover, and then the dynamic ring of the mechanical seal is moved upward, and the height of the gap between the rotating shaft of the motor and the pump shaft is greater than the height of the dynamic ring of the mechanical seal, so the dynamic ring of the mechanical seal can be taken out from the gap between the rotating shaft of the motor and the pump shaft, so that the present structure does not need to remove the motor and the motor seat, and the mechanical seal can be taken out, thereby improving the convenience of replacing the mechanical seal. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.
[0010] Figure 1 It is a front cross-sectional view of the utility model.
[0011] In the attached drawings, 1- pump body, 2- motor seat, 3- mechanical seal cover, 4- mechanical seal, 5- pump shaft, 6- rigid split coupling, 7- motor. DETAILED DESCRIPTION
[0012] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.
[0013] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which the utility model belongs.
[0014] Example 1
[0015] like Figure 1 As shown, in this embodiment, a long-axis submersible pump with an easily disassembled mechanical seal structure is provided, including a pump body 1, a motor base 2, a mechanical seal cover 3, a mechanical seal 4, a rigid split coupling 6 and a motor 7. The pump body 1 is connected to the motor base 2, the motor base 2 is connected to the motor 7, the rotating shaft of the motor 7 is connected to the pump shaft 5 of the pump body 1 in the motor base 2 through the rigid split coupling 6, the dynamic ring of the mechanical seal 4 is sleeved on the pump shaft 5, the static ring of the mechanical seal 4 is installed on the mechanical seal cover 3, the mechanical seal cover 3 is detachably connected to the pump body 1, and the gap height between the rotating shaft of the motor 7 and the pump shaft 5 is greater than the height of the dynamic ring of the mechanical seal 4.
[0016] In this embodiment, the height of the gap between the rotating shaft of the motor 7 and the pump shaft 5 is equal to the height of the mechanical seal 4 .
[0017] In this embodiment, the mechanical seal gland 3 is connected to the pump body 1 by bolts.
[0018] In this embodiment, the height of the mechanical seal gland 3 is smaller than the height of the mechanical seal 4 .
[0019] The traditional long-axis submersible pump connection structure is as follows: it includes a motor 7, a motor base 2 is connected to the motor 7, a pump body 1 is connected to the motor base 2, a pump shaft 5 of the pump body 1 is connected to the rotating shaft of the motor 7 through a rigid split coupling 6, a mechanical seal 4 is installed on the pump shaft 5, a dynamic ring of the mechanical seal 4 is sleeved on the pump shaft 5, a static ring of the mechanical seal 4 is installed on the mechanical seal gland 3, and the mechanical seal gland 3 is connected to the pump body 1. At present, the clearance height between the rotating shaft of the motor 7 and the pump shaft 5 is less than the height of the dynamic ring of the mechanical seal 4, so that the mechanical seal 4 cannot be removed, and the motor 7 and the motor base 2 need to be disassembled before it can be removed.
[0020] In this embodiment, through the cooperation of various components, after the mechanical seal 4 is damaged, first the connecting bolts of the rigid split coupling 6 are taken out, the rigid split coupling 6 is removed, and then the bolts on the mechanical seal cover 3 are unscrewed to separate the mechanical seal cover 3 from the pump body 1, and the mechanical seal cover 3 is moved upward and taken out from the gap between the rotating shaft of the motor 7 and the pump shaft 5. The static ring of the mechanical seal 4 is taken out together with the mechanical seal cover 3, and then the dynamic ring of the mechanical seal 4 is moved upward. The height of the gap between the rotating shaft of the motor 7 and the pump shaft 5 is greater than the height of the dynamic ring of the mechanical seal 4. Therefore, the dynamic ring of the mechanical seal 4 can be taken out from the gap between the rotating shaft of the motor 7 and the pump shaft 5. In this way, this structure does not need to remove the motor 7 and the motor seat 2, and the mechanical seal 4 can be taken out, thereby improving the convenience of replacing the mechanical seal.
[0021] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.
Claims
1. A long-axis submersible pump with a mechanical seal structure that is easy to disassemble, characterized in that: The invention comprises a pump body (1), a motor seat (2), a machine seal gland (3), a mechanical seal (4), a rigid split coupling (6) and a motor (7), wherein the pump body (1) is connected to the motor seat (2), the motor seat (2) is connected to the motor (7), the rotating shaft of the motor (7) is connected to the pump shaft (5) of the pump body (1) in the motor seat (2) through the rigid split coupling (6), the dynamic ring of the mechanical seal (4) is sleeved on the pump shaft (5), the static ring of the mechanical seal (4) is installed on the machine seal gland (3), the machine seal gland (3) and the pump body (1) are detachably connected, and the gap height between the rotating shaft of the motor (7) and the pump shaft (5) is greater than the height of the dynamic ring of the mechanical seal (4).
2. A long-axis submersible pump with a mechanical seal structure that is easy to disassemble according to claim 1, characterized in that: The height of the gap between the rotating shaft of the motor (7) and the pump shaft (5) is equal to the height of the mechanical seal (4).
3. A long-axis submersible pump with a mechanical seal structure that is easy to disassemble according to claim 1, characterized in that: The mechanical seal gland (3) is connected to the pump body (1) via bolts.
4. A long-axis submersible pump with a mechanical seal structure that is easy to disassemble according to claim 1, characterized in that: The height of the mechanical seal gland (3) is smaller than the height of the mechanical seal (4).