Modified double-end-face packaging type mechanical seal
By adopting a dual-end-faced containerized sealing structure in the mechanical sealing device and using the cooperation of multiple sealing components, the problem of poor sealing performance of existing mechanical sealing devices is solved, achieving more efficient material transportation and tighter sealing effect.
Patent Information
- Application Number
- CN202420698403.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-08
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2034-04-08
AI Technical Summary
When existing mechanical sealing devices convey solid particulate medium, the sealing performance is poor, and media leakage is prone to occur, affecting the material conveying efficiency.
Using a modified double-end-faced integrated mechanical sealing device, multiple sealing effects are achieved by providing a sealing assembly between the first shaft end and the second shaft end, including an elastic seal, a stop ring, a rubber sealing ring, a snap ring, a mounting plate and a fixing screw.
The sealing between the first shaft end and the second shaft end is improved, material leakage is prevented, material conveying efficiency is improved, and the sealing and dustproof effect are further enhanced through the setting of the positioning ring and dustproof plug.
Smart Images
Figure CN222615854U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of mechanical sealing devices, in particular to a modified double-end face container-type mechanical seal. Background Art
[0002] Mechanical seals, also known as end seals, are mainly used to seal the rotating shafts of pumps, reactors, compressors, hydraulic transmissions and other similar equipment, and have various forms. The mechanical seals of pumps used in the existing metallurgy, mining, papermaking, power generation and other industries, such as slurry pumps, desulfurization pumps, feed pumps, mud pumps, pulp pumps, etc., are mostly sealed through a set of sealing components;
[0003] Since the materials transported by this type of pump are mostly solid particle media, such as coal slag, powder metallurgy, mud, etc., with high concentration and high pressure, the sealing performance of this single sealing structure is poor. During use, medium leakage often occurs, which will affect the material transportation efficiency and has certain limitations in use.
[0004] Therefore, a modified double-end cartridge mechanical seal is proposed. Utility Model Content
[0005] In view of this, the purpose of the utility model is to propose a modified double-end face cartridge mechanical seal to solve the problem that the sealing performance of a single sealing structure is poor, medium leakage often occurs during use, thereby affecting the material conveying efficiency and having certain limitations in use.
[0006] Based on the above purpose, the utility model provides a modified double-end face cartridge mechanical seal, comprising a first shaft end and a second shaft end, a sealing assembly is arranged between the first shaft end and the second shaft end;
[0007] The sealing assembly includes an elastic sealing member arranged on the outer surface of the second shaft end, a sealing groove matched with the elastic sealing member is opened on the inner wall of the first shaft end, a retaining ring is fixedly connected to the outer surface of the second shaft end, a rubber sealing ring is fixedly connected to the side of the retaining ring, and two symmetrically distributed retaining rings are clamped at the connection between the first shaft end and the second shaft end, a mounting plate is fixedly connected to the side of each retaining ring, a fixing screw is threadedly connected between the two corresponding mounting plates, and a locking nut is threadedly connected to the outer surface of the fixing screw.
[0008] As a further optimization solution of the utility model, the outer diameters of the retaining ring and the rubber sealing ring are the same as the outer diameter of the first shaft end.
[0009] As a further optimization solution of the utility model, the elastic sealing member includes a first elastic ring and a second elastic ring fixedly mounted on the outer surface of the second shaft end.
[0010] As a further optimization solution of the utility model, a first positioning ring is fixedly connected to the outer surface of the first shaft end, and a first positioning groove matched with the first positioning ring is formed on the inner wall of the clamping ring.
[0011] As a further optimization solution of the utility model, a second positioning ring is fixedly connected to the outer surface of the second shaft end, and a second positioning groove matched with the second positioning ring is formed on the inner wall of the clamping ring.
[0012] As a further optimization solution of the utility model, dust plugs are provided at both ends of the clamping ring.
[0013] As a further optimization solution of the utility model, there are two mounting plates on each clamping ring, and the two mounting plates are symmetrically distributed along the horizontal center axis of the clamping ring.
[0014] Beneficial effects of the utility model:
[0015] 1. The present application sets a sealing assembly, and under the cooperation of the retaining ring, the rubber sealing ring, the clamping ring, the mounting plate, the fixing screw, the first elastic ring and the second elastic ring, firstly, the end of the first shaft end is clamped on the outer surface of the second shaft end, so that the first elastic ring and the second elastic ring can be clamped in the sealing groove respectively, so that the first shaft end and the second shaft end can be sealed for the first time. At this time, the end of the first shaft end can just fit with the side of the retaining ring, so that the rubber sealing ring can seal the end of the first shaft end for the second time. Finally, the two clamping rings are clamped on the outer surfaces of the first shaft end and the second shaft end, and the two clamping rings are fixed by the fixing screw, so that the connection between the first shaft end and the second shaft end can be sealed, so as to improve the sealing between the first shaft end and the second shaft end, and prevent the conveyed material from leaking, so as to affect the conveying efficiency of the material;
[0016] 2. The present application sets a first positioning ring and a second positioning ring. When the retaining ring is engaged, the first positioning ring can be engaged in the first positioning groove, and the second positioning ring can be engaged in the second positioning ring, so that the first shaft end and the second shaft end can be tightened, further improving the sealing of the connection between the first shaft end and the second shaft end. The setting of the dust plug can block external impurities and prevent dust from entering through the end of the pull ring. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0018] Figure 1It is a three-dimensional diagram of the overall structure of the utility model;
[0019] Figure 2 It is a front cross-sectional view of the overall structure of the utility model;
[0020] Figure 3 For the utility model Figure 2 A magnified view of the structure at center;
[0021] Figure 4 For the utility model Figure 2 Enlarged view of the structure at point B in the middle.
[0022] The markings in the figure are:
[0023] In the figure: 1. first shaft end; 2. second shaft end; 3. sealing groove; 4. retaining ring; 5. rubber sealing ring; 6. retaining ring; 7. mounting plate; 8. fixing screw; 9. first elastic ring; 10. second elastic ring; 11. first positioning ring; 12. second positioning ring; 13. dust plug; 14. locking nut. DETAILED DESCRIPTION
[0024] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.
[0025] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0026] See also Figures 1 to 4 , the utility model provides a technical solution:
[0027] A modified double-end face cartridge mechanical seal comprises a first shaft end 1 and a second shaft end 2, wherein the end of the first shaft end 1 has a certain elasticity and can be clamped on the outer surface of the second shaft end 2, and a sealing component is arranged between the first shaft end 1 and the second shaft end 2;
[0028] The sealing assembly includes an elastic seal arranged on the outer surface of the second shaft end 2, a sealing groove 3 matched with the elastic seal is opened on the inner wall of the first shaft end 1, a retaining ring 4 is fixedly connected to the outer surface of the second shaft end 2, a rubber sealing ring 5 is fixedly connected to the side of the retaining ring 4, and two symmetrically distributed retaining rings 6 are clamped at the connection between the first shaft end 1 and the second shaft end 2, and a mounting plate 7 is fixedly connected to the side of each retaining ring 6, a fixing screw 8 is threadedly connected between the two corresponding mounting plates 7, and a locking nut 14 is threadedly connected to the outer surface of the fixing screw 8.
[0029] Specifically, Figure 4 As shown, the outer diameters of the retaining ring 4 and the rubber sealing ring 5 are the same as the outer diameter of the first shaft end 1 .
[0030] Specifically, Figure 3 As shown, the elastic seal comprises a first elastic ring 9 and a second elastic ring 10 fixedly mounted on the outer surface of the second shaft end 2 .
[0031] Specifically, there are two mounting plates 7 on each clamping ring 6 , and the two mounting plates 7 are symmetrically distributed along the horizontal center axis of the clamping ring 6 .
[0032] By adopting the above technical solution, firstly, the end of the first shaft end 1 is engaged with the outer surface of the second shaft end 2, so that the first elastic ring 9 and the second elastic ring 10 can be engaged in the sealing groove 3 respectively, so that the first shaft end 1 and the second shaft end 2 can be sealed for the first time. At this time, the end of the first shaft end 1 can just fit with the side of the retaining ring 4, so that the rubber sealing ring 5 can seal the end of the first shaft end 1 for the second time. Finally, the two retaining rings 6 are engaged with the outer surfaces of the first shaft end 1 and the second shaft end 2, and the two retaining rings 6 are fixed by the fixing screw 8, so that the connection between the first shaft end 1 and the second shaft end 2 can be sealed to improve the sealing between the first shaft end 1 and the second shaft end 2, and prevent the conveyed material from leaking, so as to affect the material conveying efficiency.
[0033] Specifically, Figure 2 As shown, a first positioning ring 11 is fixedly connected to the outer surface of the first shaft end 1 , and a first positioning groove matched with the first positioning ring 11 is formed on the inner wall of the clamping ring 6 .
[0034] Specifically, Figure 3 As shown, a second positioning ring 12 is fixedly connected to the outer surface of the second shaft end 2 , and a second positioning groove matched with the second positioning ring 12 is formed on the inner wall of the clamping ring 6 .
[0035] By adopting the above technical solution, when the retaining ring 6 is engaged, the first positioning ring 11 can be engaged in the first positioning groove, and the second positioning ring 12 can be engaged in the second positioning ring 12, so that the first shaft end 1 and the second shaft end 2 can be tightened, further improving the sealing of the connection between the first shaft end 1 and the second shaft end 2.
[0036] Specifically, Figure 1 As shown, dust plugs 13 are provided at both ends of the clamping ring 6.
[0037] By adopting the above technical solution, the provision of the dust plug 13 can block external impurities and prevent dust from entering therein through the end of the pull ring.
[0038] Working principle: First, the end of the first shaft end 1 is engaged with the outer surface of the second shaft end 2, so that the first elastic ring 9 and the second elastic ring 10 can be engaged in the sealing groove 3 respectively, so that the first shaft end 1 and the second shaft end 2 can be sealed for the first time. At this time, the end of the first shaft end 1 can just fit with the side of the retaining ring 4, so that the rubber sealing ring 5 can seal the end of the first shaft end 1 for the second time. Finally, the two retaining rings 6 are engaged with the outer surfaces of the first shaft end 1 and the second shaft end 2, so that the first positioning ring 11 can be engaged in the first positioning groove, and the second positioning ring 12 can be engaged in the second positioning ring 12, so that the first shaft end 1 and the second shaft end 2 can be tightened, and the two retaining rings 6 are fixed by the fixing screw 8, so that the connection between the first shaft end 1 and the second shaft end 2 can be sealed.
[0039] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.
[0040] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A modified double-end cartridge mechanical seal, comprising a first shaft end (1) and a second shaft end (2), characterized in that: A sealing assembly is provided between the first shaft end (1) and the second shaft end (2); The sealing assembly comprises an elastic sealing member arranged on the outer surface of the second shaft end (2); the inner wall of the first shaft end (1) is provided with a sealing groove (3) matched with the elastic sealing member; the outer surface of the second shaft end (2) is fixedly connected with a retaining ring (4); the side of the retaining ring (4) is fixedly connected with a rubber sealing ring (5); and two symmetrically distributed retaining rings (6) are clamped at the connection between the first shaft end (1) and the second shaft end (2); the side of each retaining ring (6) is fixedly connected with a mounting plate (7); a fixing screw (8) is threadedly connected between the two corresponding mounting plates (7); and a locking nut (14) is threadedly connected to the outer surface of the fixing screw (8).
2. A modified double-end cartridge mechanical seal according to claim 1, characterized in that: The outer diameters of the retaining ring (4) and the rubber sealing ring (5) are the same as the outer diameter of the first shaft end (1).
3. A modified double-end cartridge mechanical seal according to claim 1, characterized in that: The elastic sealing member comprises a first elastic ring (9) and a second elastic ring (10) which are fixedly mounted on the outer surface of the second shaft end (2).
4. A modified double-end cartridge mechanical seal according to claim 1, characterized in that: A first positioning ring (11) is fixedly connected to the outer surface of the first shaft end (1), and a first positioning groove adapted to the first positioning ring (11) is provided on the inner wall of the clamping ring (6).
5. A modified double-end cartridge mechanical seal according to claim 4, characterized in that: A second positioning ring (12) is fixedly connected to the outer surface of the second shaft end (2), and a second positioning groove matched with the second positioning ring (12) is formed on the inner wall of the clamping ring (6).
6. A modified double-end cartridge mechanical seal according to claim 1, characterized in that: Dust plugs (13) are provided at both ends of the clamping ring (6).
7. A modified double-end cartridge mechanical seal according to claim 1, characterized in that: There are two mounting plates (7) on each of the clamping rings (6), and the two mounting plates (7) are symmetrically distributed along the horizontal center axis of the clamping ring (6).