Impeller race repairing structure
By introducing a combination structure of steel sleeve, baffle and sealing ring into the impeller seat ring, the problem of easy corrosion of the impeller seat ring is solved, the service life is extended and the maintenance cost is reduced.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGZHOU YIZHI MASCH CO LTD
- Filing Date
- 2025-07-02
- Publication Date
- 2026-05-19
AI Technical Summary
Impeller seat rings are prone to corrosion during long-term use, which leads to a decline in sealing performance and increases the cost and difficulty of replacement and maintenance.
An impeller seat ring repair structure was designed, comprising a combination of a steel sleeve, a baffle, a pressure sleeve, and a sealing ring. By cryogenic pressing of the steel sleeve and connection of the limiting bolts, the seat ring can be disassembled and the sealing performance can be improved.
It extends the service life of the seat ring, reduces the corrosive effect of corrosive substances on the seat ring, and reduces the frequency of replacement and maintenance costs.
Smart Images
Figure CN224260555U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of impeller seat rings, and in particular to an impeller seat ring repair structure. Background Technology
[0002] The moving blades of the fan are all installed in the shaft hole of the impeller through a seat ring. Part of the seat ring extends into the shaft hole and part of it is exposed outside the impeller housing. The part exposed outside the impeller housing will be corroded during long-term use, which will reduce its sealing performance, cause a vicious cycle, and continue to corrode. Therefore, this application provides a repairable impeller seat ring. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide an impeller seat ring repair structure to solve the problem of easy corrosion of the impeller seat ring in the prior art described in the background art.
[0004] To achieve the above objectives, this utility model provides the following technical solution: an impeller race repair structure, comprising...
[0005] Impeller body;
[0006] A seat ring is installed inside the shaft hole of the impeller body, and a positioning groove is provided on the inner wall of the open end of the seat ring;
[0007] A steel sleeve is press-fitted into a positioning groove, and the inner diameter of the steel sleeve is the same as the inner diameter of the seat ring.
[0008] A baffle is installed on the outer wall of the open end of the steel sleeve;
[0009] A pressure sleeve is provided on the baffle and extends into the positioning groove;
[0010] The sealing ring is located between the steel sleeve and the pressure sleeve, which is used to press the sealing ring onto the steel sleeve.
[0011] Preferably, the inner wall of the positioning groove has a threaded hole that penetrates the seat ring, and a limit bolt is connected to the threaded hole by thread. The outer wall of the steel sleeve has a limit groove corresponding to the position of the threaded hole, and the limit bolt extends into the limit groove.
[0012] Preferably, the limiting groove is distributed in an arc shape on the steel sleeve.
[0013] Preferably, the baffle is provided with a threaded sleeve, the outer wall of the seat ring is provided with an external thread, and the threaded sleeve is threadedly connected to the external thread.
[0014] Preferably, the sealing ring has a retaining ring on the side facing the pressure sleeve, and the pressure sleeve has a slot corresponding to the retaining ring, and the retaining ring is press-fitted into the slot.
[0015] The beneficial effects of adopting the above technical solutions are:
[0016] This application uses a steel sleeve on the inner wall of the open end of the seat ring to extend the service life of the seat ring by replacing the steel sleeve in the event of long-term wear and corrosion. At the same time, the pressure sleeve on the baffle of this application can also press the sealing ring onto the steel sleeve, thereby reducing the corrosive ability of external corrosive substances on the steel sleeve, thus reducing the cost and difficulty of replacing the seat ring. Attached Figure Description
[0017] Figure 1 This is a cross-sectional view of the impeller body of this utility model.
[0018] Figure 2 This is a utility model Figure 1 A magnified view of a portion of the image.
[0019] Figure 3 This is a schematic diagram of the baffle of this utility model.
[0020] Figure 4 This is a schematic diagram of the sealing ring of this utility model.
[0021] Figure 5 This is a schematic diagram of the steel sleeve and seat ring of this utility model.
[0022] Figure 6 This is a schematic diagram of the existing impeller, blade holder, and seat ring connection.
[0023] The components include: impeller body 10, seat ring 20, external thread 21, steel sleeve 30, positioning groove 31, limit bolt 40, threaded hole 41, limit groove 42, baffle 50, threaded sleeve 51, pressure sleeve 52, sealing ring 60, insertion ring 61, and slot 62. Detailed Implementation
[0024] The embodiments of this utility model are described in detail below with reference to the accompanying drawings.
[0025] like Figure 1-5 In this first embodiment, an impeller race repair structure includes...
[0026] Impeller body 10;
[0027] A seat ring 20 is disposed in the shaft hole of the impeller body 10, and a positioning groove 31 is provided on the inner wall of the open end of the seat ring 20.
[0028] A steel sleeve 30 is press-fitted into a positioning groove 31, and the inner diameter of the steel sleeve 30 is the same as the inner diameter of the seat ring 20.
[0029] Baffle 50 is provided on the outer wall of the open end of steel sleeve 30;
[0030] A pressure sleeve 52 is disposed on a baffle 50 and extends into a positioning groove 31;
[0031] A sealing ring 60 is located between a steel sleeve 30 and a pressure sleeve 52, which is used to press the sealing ring 60 onto the steel sleeve 30.
[0032] This embodiment is implemented as follows:
[0033] In this application, the steel sleeve 30 is first frozen, then the frozen steel sleeve 30 is pressed into the positioning groove 31, and then the sealing ring 60 is placed on the steel ring in the positioning groove 31. Finally, the baffle 50 is connected to the outer wall of the open end of the seat ring 20, so that the pressure sleeve 52 can enter the positioning groove 31 to apply pressure to the sealing ring 60, thereby reducing the contact between corrosive substances and the steel sleeve 30. Through the combination of the steel sleeve 30, the baffle 50, and the sealing ring 60, this application can reduce the corrosion of the inner wall of the seat ring 20 by corrosive substances, reduce the number of times the seat ring 20 needs to be replaced, and reduce maintenance costs.
[0034] Please see Figure 1 , 2 5. The inner wall of the positioning groove 31 has a threaded hole 41 that penetrates the seat ring 20. A limit bolt 40 is connected in the threaded hole 41 by thread. The outer wall of the steel sleeve 30 has a limit groove 42 corresponding to the position of the threaded hole 41. The limit bolt 40 extends into the limit groove 42.
[0035] This application provides a limit bolt 40 that can be connected to the threaded hole 41 of the seat ring 20, and the limit bolt 40 can be rotated to enter the limit groove 42.
[0036] Please see Figure 5 The limiting groove 42 is arc-shaped and distributed on the steel sleeve 30.
[0037] By setting the limiting groove 42 to an arc shape, this application can prevent the limiting groove 42 from not aligning with the threaded hole 41, which would prevent the limiting bolt 40 from entering the limiting groove 42.
[0038] Please see Figure 1 , 2 3, 5, The baffle 50 is provided with a threaded sleeve 51, and the outer wall of the seat ring 20 is provided with an external thread 21. The threaded sleeve 51 is threadedly connected to the external thread 21.
[0039] This application allows the threaded sleeve 51 on the baffle 50 to connect with the external thread 21 on the seat ring 20, facilitating the disassembly and replacement of the baffle 50.
[0040] Please see Figure 1 , 2 3, 4, The sealing ring 60 is provided with a retaining ring 61 on the side facing the pressure sleeve 52, and a slot 62 is provided on the pressure sleeve 52 at the position corresponding to the retaining ring 61, and the retaining ring 61 is press-fitted into the slot 62.
[0041] This application increases the stability of the sealing ring 60 by allowing the insert ring 61 provided on the sealing ring 60 to be pressed into the slot 62.
[0042] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of this utility model, and these all fall within the protection scope of this utility model.
Claims
1. A repair structure for an impeller race, characterized in that, include Impeller body; A seat ring is installed inside the shaft hole of the impeller body, and a positioning groove is provided on the inner wall of the open end of the seat ring; A steel sleeve is press-fitted into a positioning groove, and the inner diameter of the steel sleeve is the same as the inner diameter of the seat ring. A baffle is installed on the outer wall of the open end of the steel sleeve; A pressure sleeve is provided on the baffle and extends into the positioning groove; The sealing ring is located between the steel sleeve and the pressure sleeve, which is used to press the sealing ring onto the steel sleeve.
2. The impeller seat ring repair structure according to claim 1, characterized in that, The inner wall of the positioning groove has a threaded hole that passes through the seat ring. A limit bolt is connected to the threaded hole by thread. The outer wall of the steel sleeve has a limit groove corresponding to the position of the threaded hole. The limit bolt extends into the limit groove.
3. The impeller seat ring repair structure according to claim 2, characterized in that, The limiting groove is distributed in an arc shape on the steel sleeve.
4. The impeller seat ring repair structure according to claim 1, characterized in that, The baffle is provided with a threaded sleeve, and the outer wall of the seat ring is provided with external threads. The threaded sleeve is threadedly connected to the external threads.
5. The impeller seat ring repair structure according to claim 1, characterized in that, The sealing ring has a retaining ring on the side facing the pressure sleeve, and the pressure sleeve has a slot corresponding to the retaining ring. The retaining ring is press-fitted into the slot.