Structure facilitating replacement of mechanical seal
By designing a structure including components such as a flange and a mechanical seal, the problem of difficult disassembly and assembly during the replacement of the existing mechanical seal is solved, and quick and easy seal replacement is achieved, thus avoiding damage to the tank body and improving work efficiency.
Patent Information
- Application Number
- CN202423299766.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-10-21
- Estimated Expiration
- 2034-12-31
AI Technical Summary
During the replacement of existing mechanical seals, the reducer, coupling, bearing box, etc. need to be removed, which makes disassembly and assembly difficult. In particular, large reducers are heavy and have limited maintenance space, causing damage to the tank body and making installation difficult.
A structure including a flange, a mechanical seal, an agitator shaft, a bearing box, a bearing box gland, a frame, a lower coupling, an upper coupling and a reducer was designed. By loosening the coupling fastening bolts and round nuts, the mechanical seal can be directly replaced without removing the reducer. The agitator shaft shelf is used to prevent damage to the tank body.
It realizes the rapid replacement of mechanical seals, simplifies working steps, improves working efficiency, reduces time cost, avoids damage to the tank body, and has a simple structure and is easy to disassemble and assemble.
Smart Images
Figure CN223459854U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a structure of convenient replacement mechanical seal. BACKGROUND
[0002] Speed reducer is a kind of independent component by gear drive, worm drive, gear-worm drive enclosed in rigid shell, commonly used as the speed reducer between prime mover and working machine, between prime mover and working machine or actuator, play the role of matching speed and transmitting torque, widely used in modern machinery.
[0003] The existing mechanical seal needs to be removed in sequence when replacing mechanical seal, reducer, shaft coupling, bearing box etc. The weight of the reducer of large tank is large, which is not convenient to disassemble and assemble. The maintenance space is small, and the reducer is difficult to hoist. The stirring shaft is not fixed after disassembly, which can easily cause damage to the tank body. The stirring shaft is heavy, and it is difficult to install again. Therefore, the structure of convenient replacement mechanical seal is proposed for the above problems. UTILITY MODEL CONTENTS
[0004] The utility model discloses a structure of convenient replacement mechanical seal, can quickly replace mechanical seal, save time cost, increase work efficiency.
[0005] The technical scheme for realizing the above object is as follows: a structure of convenient replacement mechanical seal, including flange, mechanical seal, stirring shaft, bearing box, bearing box gland, rack, lower shaft coupling, connecting short section, upper shaft coupling and speed reducer;
[0006] The lower end of the speed reducer is connected with the rack, the lower end of the rack is connected with the flange, the output end of the speed reducer is connected with the upper shaft coupling located in the rack, the lower end of the upper shaft coupling is connected with the connecting short section, the lower end of the connecting short section is connected with the lower shaft coupling, the lower end of the lower shaft coupling is connected with the stirring shaft, and the lower end of the stirring shaft penetrates the flange;The mechanical seal is connected to the side wall of the stirring shaft and located on the upper end surface of the flange;
[0007] The side wall of the stirring shaft is connected with the bearing box at the upper end, and the bearing box is connected with the bearing box gland at the upper end.
[0008] Preferably, the lower end surface of the flange is connected with a stirring shaft rest rack;The lower end of the side wall of the stirring shaft is connected with a positioning block through a positioning block set screw.
[0009] Preferably, the mechanical seal is connected with the upper end surface of the flange through a mechanical seal fastening bolt.
[0010] Preferably, the upper shaft coupling and the connecting short section are connected through an upper shaft coupling fastening bolt.
[0011] Preferably, the lower end of the connecting short section is connected with the lower shaft coupling through a lower shaft coupling fastening bolt.
[0012] Preferably, a round nut is connected on the stirring shaft.
[0013] Preferably, the bearing box and the bearing box gland are connected through a bearing box gland fastening bolt.
[0014] Preferably, the lower shaft coupling is connected with the stirring shaft through a lower shaft coupling set screw.
[0015] The beneficial effect of the utility model is: the structure of the utility model is convenient for replacing the mechanical seal, the mechanical seal can be directly replaced after the connecting short section and the bearing box are removed, the reducer does not need to be removed, the working steps are simplified, and the efficiency is improved; after the round nut is loosened, the stirring shaft falls on the stirring shaft resting frame together with the positioning block, and does not fall to the tank bottom, so that the tank body is prevented from being damaged, and the stirring shaft is also convenient to install again, and the stirring shaft does not need to be lifted upward. The structure is simple, convenient to disassemble and assemble, and can be widely applied to the replacement of the mechanical seal. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 It is the schematic diagram of the structure of the utility model convenient for replacing the mechanical seal.
[0017] In the drawing: 1, flange; 2, mechanical seal; 3, stirring shaft; 4, bearing box; 5, bearing box gland; 6, rack; 7, lower shaft coupling; 8, connecting short section; 9, upper shaft coupling; 10, reducer; 11, upper shaft coupling fastening bolt; 12, lower shaft coupling fastening bolt; 13, lower shaft coupling set screw; 14, round nut; 15, bearing box gland fastening bolt; 16, mechanical seal fastening bolt; 17, stirring shaft resting frame; 18, positioning block set screw; 19, positioning block. DETAILED DESCRIPTION
[0018] The technical scheme of the utility model will be described clearly and completely in combination with the drawings. In the description of the utility model, it should be explained that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as limiting the indicated device or element to have a specific orientation, to be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying the importance of the opposite.
[0019] The utility model will be further described in combination with the drawings.
[0020] As Figure 1 shown, a structure for conveniently replacing mechanical seal, including flange 1, mechanical seal 2, stirring shaft 3, bearing box 4, bearing box gland 5, frame 6, lower coupling 7, connecting section 8, upper coupling 9 and reducer 10; the lower end of reducer 10 is connected with frame 6, the lower end of frame 6 is connected with flange 1, the output end of reducer 10 is connected with upper coupling 9 located inside frame 6, the lower end of upper coupling 9 is connected with connecting section 8, and upper coupling 9 and connecting section 8 are connected through upper coupling fastening bolt 11.
[0021] Specifically, the lower end of connecting section 8 is connected with lower coupling 7, and the lower end of connecting section 8 and lower coupling 7 are connected through lower coupling fastening bolt 12. Connecting section 8 is added between upper coupling 9 and lower coupling 7, leaving space for taking out mechanical seal 2.
[0022] Specifically, the lower end of lower coupling 7 is connected with stirring shaft 3, and lower coupling 7 and stirring shaft 3 are connected through lower coupling fastening screw 13. The lower end of stirring shaft 3 penetrates flange 1, and circular nut 14 is connected on stirring shaft 3.
[0023] Specifically, mechanical seal 2 is connected on the side wall of stirring shaft 3 and located on the upper end surface of flange 1, and mechanical seal 2 is connected with the upper end surface of flange 1 through mechanical seal fastening bolt 16.
[0024] Specifically, bearing box 4 is connected on the upper end of the side wall of stirring shaft 3, and bearing box gland 5 is connected on the upper end of bearing box 4. Bearing box 4 and bearing box gland 5 are connected through bearing box gland fastening bolt 15.
[0025] Specifically, stirring shaft rest rack 17 is connected on the lower end surface of flange 1, and positioning block 19 is connected on the lower end of the side wall of stirring shaft 3 through positioning block fastening screw 18.
[0026] Specifically, stirring shaft rest rack 17 is welded on the lower part of flange 1, positioning block 19 is arranged on stirring shaft 3, and positioning block fastening screw 18 is used for fixation, so that when stirring shaft 3 falls down, positioning block 19 falls on stirring shaft rest rack 17 together with stirring shaft 3.
[0027] Specifically, the replacement steps are first loosening the upper coupling fastening bolt 11 and the lower coupling fastening bolt 12, loosening the round nut 14, the stirring shaft 3 together with the positioning block 19 falling on the stirring shaft resting rack 17, taking out the connecting short section 8, loosening the lower coupling fastening screw 13, taking out the lower coupling 7, loosening the bearing box gland fastening bolt 15, taking out the bearing box gland 5, taking out the bearing seat, bearing, bearing sleeve, etc. together with the bearing box 4, loosening the mechanical seal fastening bolt 16, taking out the mechanical seal 2, and replacing the new mechanical seal 2. When assembling, the installation is in the reverse order of the disassembly procedure. The speed reducer does not need to be disassembled, other structures are disassembled conveniently, and the mechanical seal can be quickly replaced. Time cost is saved, and work efficiency is increased.
[0028] The convenient mechanical seal replacement structure can directly replace the mechanical seal 2 after the connecting short section 8 and the bearing box 4 are removed, without disassembling the speed reducer 10, simplifying the working steps, and improving the efficiency. After the round nut 14 is loosened, the stirring shaft 3 together with the positioning block 19 falls on the stirring shaft resting rack 17 and does not fall to the bottom of the tank, preventing damage to the tank. Reinstalling the stirring shaft 3 is also simple, without lifting the stirring shaft 3 upward. The structure is simple, disassembly and assembly are convenient, and the structure can be widely applied to the replacement of mechanical seals.
[0029] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements to some or all of the technical features. 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 present application.
Claims
1. A structure for facilitating replacement of a mechanical seal, comprising: It includes flange (1), mechanical seal (2), stirring shaft (3), bearing box (4), bearing box gland (5), rack (6), lower coupling (7), connecting section (8), upper coupling (9) and speed reducer (10); The lower end of the speed reducer (10) is connected with the rack (6), the lower end of the rack (6) is connected with the flange (1), the output end of the speed reducer (10) is connected with the upper coupling (9) inside the rack (6), the lower end of the upper coupling (9) is connected with the connecting section (8), the lower end of the connecting section (8) is connected with the lower coupling (7), the lower end of the lower coupling (7) is connected with the stirring shaft (3), and the lower end of the stirring shaft (3) penetrates the flange (1); The mechanical seal (2) is connected to the side wall of the stirring shaft (3) on the upper end surface of the flange (1). The side wall of the stirring shaft (3) is connected with the bearing box (4), and the upper end of the bearing box (4) is connected with the bearing box gland (5).
2. The structure for easy replacement of the mechanical seal according to claim 1, characterized by The lower end surface of the flange (1) is connected with a stirring shaft rest (17); The lower end of the side wall of the stirring shaft (3) is connected with a positioning block (19) through a positioning block set screw (18).
3. The structure for easy replacement of mechanical seal according to claim 1, wherein The mechanical seal (2) is connected with the upper end surface of the flange (1) through a mechanical seal fastening bolt (16).
4. The structure for easy replacement of mechanical seal according to claim 1, wherein The upper coupling (9) and the connecting section (8) are connected through an upper coupling fastening bolt (11).
5. The structure for easy replacement of mechanical seal according to claim 1, wherein The lower end of the connecting section (8) and the lower coupling (7) are connected through a lower coupling fastening bolt (12).
6. The structure for easy replacement of mechanical seal according to claim 1, wherein The stirring shaft (3) is connected with a round nut (14).
7. The structure for easy replacement of mechanical seal according to claim 1, wherein The bearing box (4) and the bearing box gland (5) are connected through a bearing box gland fastening bolt (15).
8. The structure for easy replacement of mechanical seal according to claim 1, wherein The lower coupling (7) and the stirring shaft (3) are connected through a lower coupling set screw (13).