Radial stable mechanical seal
By introducing positioning protrusions, grooves, and static springs into the mechanical seal, combined with the design of limiting blocks and limiting grooves, and inner concave and outer convex parts, the problem of insufficient radial limiting in traditional mechanical seals is solved, improving stability and convenience.
Patent Information
- Application Number
- CN202520791056.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-24
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-04-24
AI Technical Summary
Traditional mechanical seals lack radial limiting during replacement, resulting in high machining accuracy requirements, insufficient stability, and easy damage.
A radially stable mechanical seal was designed. By cooperating with a positioning protrusion, a positioning groove and a stationary spring, combined with a limiting block and a limiting groove, and the design of an inner concave part and an outer convex part, radial limiting is provided to ensure stable contact between the dynamic ring and the stationary ring.
It improves the stability and convenience of mechanical seals, enhances the radial limiting of the dynamic and static rings, and ensures sealing performance.
Smart Images
Figure CN223953236U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to mechanical seal technical field, concretely is a radial stable type mechanical seal. BACKGROUND
[0002] Mechanical seal is a kind of shaft seal device, mainly used for centrifugal pump, reaction kettle and other rotating fluid machinery, its core structure is static ring, moving ring, by the adhesion and relative rotation of moving ring and static ring, prevent fluid leakage, long-term adhesion and relative rotation, moving ring, static ring will inevitably wear, need to be replaced regularly, to prevent the sealing property to drop, when traditional mechanical seal is replaced, only new static ring, moving ring is placed in installation position, there is little radial limit, this is very high to the machining precision of the hole where mechanical seal is located, if the machining precision of the hole is insufficient, it is very easy to lead to the stability of mechanical seal insufficient even damage, based on this situation, how can mechanical seal provide radial limit, to improve the stability of mechanical seal, more and more become the problem that relevant technical personnel urgently need to solve. SUMMARY
[0003] To solve the above technical problems, the utility model provides a radial stable type mechanical seal.
[0004] A radial stable type mechanical seal, including static part, moving part, its characterized in that: the static part includes base plate, the base plate right side presents annular array arrangement bolt, the base plate left side slide setting shift block, the shift block left side setting static ring, the moving part includes end cover, the end cover inside setting dynamic spring, the dynamic spring right side setting dynamic pressure ring, the dynamic pressure ring right side setting dynamic ring, the dynamic ring left side setting sealing ring, the position of the dynamic ring with the static ring corresponds, the base plate left side setting T-shaped sliding slot, the shift block right side setting T-shaped sliding block, the T-shaped sliding block with The T-shaped sliding slot sliding connection, the shift block periphery sets up through slot, the number of the shift block is 4 groups, 4 groups the shift block presents annular array arrangement, 4 groups the shift block periphery sets up 1 group static spring, the static spring is circular ring, the static spring is located in the through slot.
[0005] Further, the static ring right side sets up static pressure ring, the shape of the static pressure ring is circular truncated cone, the static pressure ring surface sets up positioning recess, the positioning recess presents annular array arrangement, the inside surface of the shift block sets up positioning convex, the position of the positioning convex with The positioning recess corresponds.
[0006] Further, the end cover right side sets up limit slot, the dynamic pressure ring periphery sets up limit block, the position of the limit block with The limit slot corresponds.
[0007] Further, the static ring left side is provided with an outer convex part, and the dynamic ring right side is provided with an inner recess part corresponding to the position of the outer convex part.
[0008] The radial stable mechanical seal has the advantages that:
[0009] 1. The positioning convex and the positioning groove cooperate with the static spring, effectively ensuring the limiting of the static ring in the radial direction, the limiting block cooperates with the limiting groove to limit the sealing ring, effectively ensuring the limiting of the dynamic ring in the radial direction, the inner recess part cooperates with the outer convex part, effectively ensuring the limiting of the dynamic ring and the static ring in the radial direction, thereby providing good limiting in the radial direction for the mechanical seal, and effectively improving the stability of the mechanical seal.
[0010] 2. The circular truncated cone design of the static pressure ring, in combination with the annular array setting of the four groups of moving blocks and the sliding connection of the T-shaped sliding block and the T-shaped sliding groove, effectively ensures the convenience of the static ring assembly.
[0011] 3. The dynamic pressure ring is provided with an equal elastic force transmission structure between the dynamic spring and the dynamic ring, in combination with the limiting of the sealing ring by the end cover, effectively improving the tightness of the dynamic ring and the static ring. BRIEF DESCRIPTION OF DRAWINGS
[0012] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below, but it is not a limitation on the protection scope of the present application.
[0013] Figure 1 It is a structural schematic diagram of the assembled state of the dynamic ring and the static ring of the present application.
[0014] Figure 2 It is an explosion structural schematic diagram of the present application.
[0015] Figure 3 It is a left view structural schematic diagram of the moving block position of the present application.
[0016] Among them, 1-dynamic part, 2-static part, 3-dynamic spring, 4-end cover, 5-limiting groove, 6-dynamic pressure ring, 7-dynamic ring, 8-static ring, 9-positioning groove, 10-positioning convex, 11-static spring, 12-through slot, 13-T-shaped sliding groove, 14-T-shaped sliding block, 15-base plate, 16-bolt, 17-moving block, 18-static pressure ring, 19-outer convex part, 20-inner recess part, 21-sealing ring, 22-limiting block. DETAILED DESCRIPTION
[0017] In order to make the description clearer, the radial stable mechanical seal of the present application is further described in combination with the drawings of the specification.
[0018] A radial stable mechanical seal, including static part 2, moving part 1, it is characterized in to: the static part 2 includes base plate 15, the right side of base plate 15 is arranged in annular array bolt 16, the left side of base plate 15 is arranged in sliding block 17, the left side of sliding block 17 is arranged in static ring 8, the moving part 1 includes end cover 4, the inside of end cover 4 is arranged in dynamic spring 3, the right side of dynamic spring 3 is arranged in dynamic pressure ring 6, the right side of dynamic pressure ring 6 is arranged in dynamic ring 7, the left side of dynamic ring 7 is arranged in sealing ring 21, the position of dynamic ring 7 corresponds with static ring 8, the left side of base plate 15 is arranged in T-shaped sliding slot 13, the right side of sliding block 17 is arranged in T-shaped sliding block 14, T-shaped sliding block 14 is slidably connected with T-shaped sliding slot 13, the periphery of sliding block 17 is arranged in through slot 12, the number of sliding block 17 is 4 groups, 4 groups of sliding block 17 are arranged in annular array, the periphery of 4 groups of sliding block 17 is arranged in 1 group of static spring 11, static spring 11 is circular ring, and static spring 11 is located in the inside of through slot 12.
[0019] Further, the right side of the static ring 8 is provided with a static pressure ring 18, the shape of the static pressure ring 18 is a circular truncated cone, the surface of the static pressure ring 18 is provided with a positioning groove 9, the positioning groove 9 is arranged in annular array, the inner side surface of the sliding block 17 is provided with a positioning protrusion 10, and the positioning protrusion 10 corresponds to the position of the positioning groove 9.
[0020] Further, the right side of the end cover 4 is provided with a limiting groove 5, the periphery of the dynamic pressure ring 6 is provided with a limiting block 22, and the limiting block 22 corresponds to the position of the limiting groove 5.
[0021] Further, the left side of the static ring 8 is provided with an outer convex part 19, the right side of the dynamic ring 7 is provided with an inner recessed part 20, and the inner recessed part 20 corresponds to the position of the outer convex part 19.
[0022] The working principle of the radial stable mechanical seal is as follows: the static ring 8 is translated to the direction of the sliding block 17 until the positioning protrusion 10 is clamped with the positioning groove 9, in the process, the static pressure ring 18 pushes the sliding block 17 and the T-shaped sliding block 14 as a whole along the T-shaped sliding slot 13, and the static spring 11 finally tightens the sliding block 17, the static part 2 is fixed on the installation position through the bolt 16, the shaft in the working environment is penetrated through the center of the moving part 1 and the static part 2, the end cover 4 is fixed on the predetermined position of the shaft, the dynamic spring 3 makes the dynamic pressure ring 6 and the sealing ring 21 adhere to each other, and simultaneously makes the dynamic ring 7 and the static ring 8 adhere to each other, at this time, the inner recessed part 20 and the outer convex part 19 also adhere to each other, so that the installation of the mechanical seal is completed, the elastic force of the dynamic spring 3, the cooperation of the limiting block 22 and the limiting groove 5 make the dynamic pressure ring 6 and the sealing ring 21 tightly adhere to each other, and simultaneously make the dynamic ring 7 and the static ring 8, the inner recessed part 20 and the outer convex part 19 all tightly adhere to each other, in the working process of the shaft, the moving part 1 is driven to rotate, a very thin liquid film is formed between the dynamic ring 7 and the static ring 8, so that the expected sealing effect is achieved.
[0023] The above merely illustrates the specific implementation of the present application, but the protection scope of the present application is not limited thereto, any change or replacement without creative labor should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be limited by the protection scope defined in the claims.
Claims
1. A mechanically stable radial seal comprising a static part, a dynamic part, characterized in that: The static part includes a base plate, bolts are arranged in a ring array on the right side of the base plate, a moving block is arranged on the left side of the base plate in a sliding mode, a static ring is arranged on the left side of the moving block, the dynamic part includes an end cover, a dynamic spring is arranged in the end cover, a dynamic pressure ring is arranged on the right side of the dynamic spring, a dynamic ring is arranged on the right side of the dynamic pressure ring, a sealing ring is arranged on the left side of the dynamic ring, the position of the dynamic ring corresponds to the position of the static ring, a T-shaped sliding groove is arranged on the left side of the base plate, a T-shaped sliding block is arranged on the right side of the moving block, the T-shaped sliding block is connected with the T-shaped sliding groove in a sliding mode, a through groove is arranged on the periphery of the moving block, the number of the moving blocks is four groups, the four groups of moving blocks are arranged in a ring array, one group of static springs is arranged on the periphery of the four groups of moving blocks, the static spring is a circular ring, and the static spring is located in the through groove.
2. A mechanically stable radial seal according to claim 1, wherein The static ring is provided with a static pressure ring on the right side, the shape of the static pressure ring is a circular truncated cone, the surface of the static pressure ring is provided with a positioning groove, the positioning groove is arranged in a ring array, the inner side surface of the moving block is provided with a positioning protrusion, and the position of the positioning protrusion corresponds to the position of the positioning groove.
3. A mechanically stable radial seal according to claim 1, wherein, The end cover is provided with a limiting groove on the right side, and the dynamic pressure ring is provided with a limiting block on the periphery.
4. A mechanically stable radial seal according to claim 1, wherein, The static ring is provided with an outer convex part on the left side, the dynamic ring is provided with an inner recess on the right side, and the position of the inner recess corresponds to the position of the outer convex part.