Mechanical sealing element with self-locking function

Abstract

The utility model discloses a mechanical sealing element with a self-locking function, and relates to the field of mechanical sealing. Comprising an inner pipe and an outer pipe, the periphery of the inner pipe is sleeved with a self-locking mechanism, the periphery of the outer pipe is sleeved with a sealing mechanism, the self-locking mechanism comprises the outer pipe, and multiple sets of clamping grooves are formed in the inner wall of the outer pipe. The inner pipe is sleeved towards the inside of the outer pipe, the multiple sets of protruding blocks elastically connected with the inner wall of the outer pipe are clamped with the multiple sets of inclined grooves formed in the outer wall of the inner pipe, the limiting effect is achieved, meanwhile, the clamping grooves in the inner wall of the outer pipe play a role in limiting the spring, and the situation that the spring deforms in the using process to cause displacement of a pipeline is avoided; during disassembly, the outer pipe is rotated in the direction of the chute, the spring is extruded to shrink, limit is released, and the inner pipe is taken out, so that the installation process is quick and convenient, the working efficiency is improved, and the effects of trouble saving and strength are achieved.

Description

Technical Field

[0001] The utility model relates to the field of mechanical seals, in particular to a mechanical seal with a self-locking function. Background Art

[0002] Seals are materials or parts that prevent fluids or solid particles from leaking from adjacent joint surfaces and prevent external impurities such as dust and moisture from invading parts inside machinery and equipment. Although rubber and plastic seals are small, their role makes them basic components and accessories in major national economic industries such as national defense, chemical industry, petroleum, coal, transportation and machinery manufacturing, and they play a very important role in the development of the national economy. Since seals seal the interfaces of pipelines, etc., they need to be limited to avoid displacement of seals, which will cause gaps in the joints. At present, seals on the market are generally fixed by the friction provided by the rubber gasket itself, so the anti-displacement ability is poor, which makes the seals easy to stagger after long-term use and cannot withstand large vibrations;

[0003] The existing patent (authorization announcement number: CN 207527035 U) discloses a mechanical seal with a self-locking function. The seal with a fixing function, when the first connecting member and the second connecting member surround the connecting pipe, the first mounting plate and the second mounting plate are locked by screws. When the first mounting plate and the second mounting plate are locked, the first connecting member and the second connecting member are also limited accordingly, so as to form a complete circular ring, so that the two fixing members are sleeved on the surface of the pipe, and the limiting teeth in the fixing member can make one end of the nail teeth close to the surface of the pipe through the elastic force of the spring, thereby generating friction to resist the movement of the seal, thereby achieving the fixing function and avoiding the dislocation of the seal;

[0004] However, the above technical solution still has certain defects. When the device is in use, the first connecting member and the second connecting member surround the connecting pipe, and the first mounting plate and the second mounting plate are locked by screws. This operation is too cumbersome, inconvenient for installation and disassembly, and the sealing effect is not perfect. At the same time, during the limiting process, the device is only fixed by limiting teeth, which is not firm enough and easy to fall off. The sealing effect is poor and it is easy to cause liquid leakage. Utility Model Content

[0005] Based on this, the purpose of the utility model is to provide a mechanical seal with a self-locking function to solve the technical problems raised in the above background.

[0006] To achieve the above object, the utility model provides the following technical solution: a mechanical seal with a self-locking function, comprising an inner tube and an outer tube, the outer sleeve of the inner tube is provided with a self-locking mechanism, and the outer sleeve of the outer tube is provided with a sealing mechanism;

[0007] The self-locking mechanism includes an outer tube, the inner wall of the outer tube is provided with a plurality of groups of grooves, the bottom ends of the plurality of groups of grooves are fixedly connected to a first spring, the other ends of the plurality of groups of first springs are fixedly connected to a protrusion, the outer wall of the inner tube is provided with a plurality of groups of oblique grooves, one end of the plurality of groups of protrusions extends to the inside of the grooves, and the other ends of the plurality of groups of protrusions extend to the inside of the oblique grooves.

[0008] As a preferred technical solution for a mechanical seal with a self-locking function of the utility model, the outer wall of the outer tube is sleeved with a rotating disk, the inner wall of the rotating disk is rotatably connected to multiple sets of rotating rods, the other ends of the multiple sets of rotating rods are rotatably connected to top blocks, the outer wall of the outer tube is provided with multiple sets of through holes, and one side of the multiple sets of top blocks is rotatably connected to the inner wall of the through holes.

[0009] As a preferred technical solution of a mechanical seal with a self-locking function of the utility model, a sealing ring is fixedly connected to the inner wall of the outer tube, and the outer wall of the sealing ring abuts against the top block.

[0010] As a preferred technical solution of a mechanical seal with a self-locking function of the utility model, the outer wall of the outer tube is sleeved with multiple groups of triangular blocks, and one side of the multiple groups of triangular blocks is flush with one side of the sealing ring.

[0011] As a preferred technical solution for a mechanical seal with a self-locking function of the utility model, a protective cover is fixedly connected to one side of the outer wall of the sealing ring, a through hole is opened on the top of the protective cover, an L-shaped stopper is slidably connected to the inside of the protective cover, and the top of the L-shaped stopper extends to the outer end of the through hole.

[0012] As a preferred technical solution for a mechanical seal with a self-locking function of the utility model, the bottom end of the L-shaped stopper is fixedly connected to a third spring, the other end of the third spring is fixedly connected to the bottom end of the protective cover, and one side of the L-shaped stopper is abutted against an L-shaped clamping block.

[0013] As a preferred technical solution for a mechanical seal with a self-locking function of the utility model, the side wall of the L-shaped block is rotatably connected to the inner wall of the protective cover, the other end of the L-shaped block is fixedly connected to two springs, the other end of the second spring is fixedly connected to the inner wall of the protective cover, a through hole is opened at the bottom end of the protective cover, the bottom end of the L-shaped block extends to the outer wall of the through hole, and the bottom end of the L-shaped block abuts against the triangular block.

[0014] In summary, the utility model mainly has the following beneficial effects:

[0015] 1. The utility model sleeves the inner tube into the outer tube, and the multiple groups of protrusions elastically connected to the inner wall of the outer tube engage with the multiple groups of inclined grooves on the outer wall of the inner tube to achieve a limiting effect. At the same time, the grooves on the inner wall of the outer tube limit the spring to prevent the spring from deforming during use and causing displacement of the pipeline. When disassembling, the outer tube is rotated in the direction of the inclined groove. At this time, the spring is squeezed and contracted, the limit is released, and the inner tube is taken out, making the installation process quick and convenient, improving work efficiency, and achieving the effect of saving time and effort.

[0016] 2. When the rotating disk of the utility model rotates, the internal top block squeezes the sealing ring inward, and the sealing ring is tightly attached to the inner tube to achieve a sealing effect. At this time, the triangular block on the outer wall of the outer tube engages with the L-shaped block to produce a limit, which prevents the sealing ring from loosening during use, strengthens the fixation of the inner tube, prevents the inner tube from shifting, and further deepens the limiting effect. When disassembling, you only need to press the L-shaped block downward to release the limit, which is convenient for disassembly and replacement of the inner tube, making the installation and disassembly process simpler and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a top view of the mechanical seal of the utility model;

[0018] Figure 2 It is a cross-sectional view of the sealing mechanism of the utility model;

[0019] Figure 3 It is a cross-sectional view of the mechanical seal of the utility model;

[0020] Figure 4 It is a side sectional view of the triangular clamping block of the utility model;

[0021] Figure 5 It is a side cross-sectional view of the protrusion of the utility model;

[0022] Figure 6 It is the self-locking mechanism of the utility model.

[0023] In the figure: 100, self-locking mechanism; 200, sealing mechanism;

[0024] 1. outer tube; 2. inner tube; 110. slot; 120. first spring; 130. protrusion; 140. inclined slot;

[0025] 210, rotating disk; 220, rotating rod; 230, top block; 240, sealing ring; 250, protective cover; 251, L-shaped block; 253, second spring; 254, L-shaped stopper; 255, third spring; 260, triangular block. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0027] The following describes an embodiment of the utility model based on its overall structure.

[0028] A mechanical seal with a self-locking function, such as Figure 1-6 As shown, it includes an inner tube 2 and an outer tube 1, the outer sleeve of the inner tube 2 is provided with a self-locking mechanism 100, the outer sleeve of the outer tube 1 is provided with a sealing mechanism 200, the self-locking mechanism 100 includes the outer tube 1, the inner wall of the outer tube 1 is provided with multiple groups of grooves 110, the bottom ends of multiple groups of the grooves 110 are fixedly connected with first springs 120, the other ends of multiple groups of the first springs 120 are fixedly connected with protrusions 130, the outer wall of the inner tube 2 is provided with multiple groups of inclined grooves 140, one end of multiple groups of the protrusions 130 extends to the inside of the grooves 110, and the other ends of multiple groups of the protrusions 130 extend to the inside of the inclined grooves 140.

[0029] When the inner tube 2 is sleeved on the outer tube 1, the first spring 120 fixedly connected in the inner wall groove 110 of the outer tube 1 is squeezed, driving the protrusion 130 fixedly connected on the other side to shrink and squeeze inward. When the inclined groove 140 on the outer wall of the inner tube 2 slides to the specified position, the first spring 120 on the inner wall of the outer tube 1 is reset, driving the protrusion 130 fixedly connected to the other end of the first spring 120 to slide outward to the inside of the multiple groups of inclined grooves 140 opened on the outer wall of the inner tube 2. At this time, the protrusion 130 and the inclined groove 140 are engaged with each other to achieve a self-locking effect. When disassembling, the inner tube 2 is rotated along the opening of the inclined groove 140. At this time, the protrusion 130 is forced to squeeze toward the inner wall of the outer tube 1, driving the first spring 120 to shrink inward, releasing the limit, and the inner tube 2 can be pulled out.

[0030] Please refer to Figure 1-6The outer wall of the outer tube 1 is sleeved with a rotating disk 210, and the inner wall of the rotating disk 210 is rotatably connected to multiple groups of rotating rods 220, and the other ends of the multiple groups of rotating rods 220 are rotatably connected to the top blocks 230. The outer wall of the outer tube 1 is provided with multiple groups of through holes, and one side of multiple groups of the top blocks 230 is rotatably connected to the inner wall of the through holes. The inner wall of the outer tube 1 is fixedly connected with a sealing ring 240, and the outer wall of the sealing ring 240 is abutted against the top block 230. The outer wall of the outer tube 1 is sleeved with multiple groups of triangular blocks 260, and one side of the multiple groups of triangular blocks 260 is flush with one side of the sealing ring 240. A protective cover 250 is fixedly connected to one side of the outer wall of the sealing ring 240, and a through hole is provided on the top of the protective cover 250. The inside of the protective cover 250 An L-shaped stopper 254 is slidably connected, the top of which extends to the outer end of the through hole, the bottom of which is fixedly connected to a third spring 255, the other end of which is fixedly connected to the bottom end of the protective cover 250, one side of the L-shaped stopper 254 abuts against an L-shaped clamping block 251, the side wall of which is rotatably connected to the inner wall of the protective cover 250, the other end of the L-shaped clamping block 251 is fixedly connected to a second spring 253, the other end of which is fixedly connected to the inner wall of the protective cover 250, a through hole is provided at the bottom end of the protective cover 250, the bottom end of the L-shaped clamping block 251 extends to the outer wall of the through hole, and the bottom end of the L-shaped clamping block 251 abuts against the triangular clamping block 260.

[0031] After the inner tube 2 and the outer tube 1 are self-locked, the L-shaped stopper 254 is pressed downward. At this time, the third spring 255 fixedly connected to the bottom end of the L-shaped stopper 254 is compressed downward by force, releasing the limit on the L-shaped block 251. At the same time, the second spring 253 is reset, pushing the upper end of the L-shaped block 251 to rotate toward the L-shaped stopper 254, so that the end of the L-shaped block 251 rotates upward, releasing the limit effect on the triangular block 260. At this time, the rotating disk 210 connected to the outer wall of the outer tube 1 is rotated, and the rotating rod 220 connected to the inner wall of the rotating disk 210 is rotated by force, and the other end of the rotating rod drives the top block 230 to the inner wall of the outer tube 1. The outer wall of the sealing ring 240 fixedly connected to the wall is squeezed, so that the sealing ring 240 is closely fitted to the outer wall of the inner tube 2. At this time, the L-shaped stopper 254 is released, and the third spring 255 fixedly connected to the bottom end of the L-shaped stopper 254 is reset, driving the L-shaped stopper 254 to reset. The end of the L-shaped stopper 254 aligned with the L-shaped block drives the L-shaped block 251 to rotate, squeezing the second spring 253 inward, so that the L-shaped block 251 is reset. At this time, the bottom end of the L-shaped block 251 abuts against the triangular block 260, achieving a limiting effect on the sealing ring 240, realizing a sealing effect and further deepening the fixing effect of the inner tube 2.

[0032] When in use, the inner tube 2 is sleeved into the outer tube 1, and the multiple groups of protrusions 130 elastically connected to the inner wall of the outer tube 1 engage with the multiple groups of inclined grooves 140 opened on the outer wall of the inner tube 2 to achieve a limiting effect. At the same time, the grooves 110 on the inner wall of the outer tube 1 limit the spring to prevent the spring from deforming during use and causing displacement of the pipeline. When disassembling, the outer tube 1 is rotated in the direction of the inclined groove 140. At this time, the spring is squeezed and contracted, the limit is released, and the inner tube 2 is taken out, making the installation process quick and convenient, improving work efficiency, and achieving the effect of saving time and effort.

[0033] Although an embodiment of the utility model has been shown and described, this specific embodiment is merely an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contributions as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.

Claims

1. A mechanical seal with a self-locking function, comprising an inner tube (2) and an outer tube (1), characterized in that: The outer sleeve of the inner tube (2) is provided with a self-locking mechanism (100), and the outer sleeve of the outer tube (1) is provided with a sealing mechanism (200); The self-locking mechanism (100) comprises an outer tube (1), the inner wall of the outer tube (1) is provided with a plurality of groups of slots (110), the bottom ends of the plurality of groups of slots (110) are fixedly connected to a first spring (120), the other ends of the plurality of groups of first springs (120) are fixedly connected to a protrusion (130), and the outer wall of the inner tube (2) is provided with a plurality of groups of inclined slots (140), one end of the plurality of groups of protrusions (130) extends to the interior of the slots (110), and the other ends of the plurality of groups of protrusions (130) extend to the interior of the inclined slots (140).

2. A mechanical seal with a self-locking function according to claim 1, characterized in that: The outer wall of the outer tube (1) is sleeved with a rotating disk (210), the inner wall of the rotating disk (210) is rotatably connected to a plurality of rotating rods (220), the other ends of the plurality of rotating rods (220) are rotatably connected to a top block (230), the outer wall of the outer tube (1) is provided with a plurality of through holes, and one side of the plurality of top blocks (230) is rotatably connected to the inner wall of the through hole.

3. A mechanical seal with self-locking function according to claim 2, characterized in that: A sealing ring (240) is fixedly connected to the inner wall of the outer tube (1), and the outer wall of the sealing ring (240) is in contact with the top block (230).

4. A mechanical seal with self-locking function according to claim 3, characterized in that: The outer wall of the outer tube (1) is sleeved with a plurality of groups of triangular clamping blocks (260), and one side of the plurality of groups of triangular clamping blocks (260) is flush with one side of the sealing ring (240).

5. A mechanical seal with a self-locking function according to claim 3, characterized in that: A protective cover (250) is fixedly connected to one side of the outer wall of the sealing ring (240), a through hole is provided at the top end of the protective cover (250), an L-shaped stopper (254) is slidably connected inside the protective cover (250), and the top end of the L-shaped stopper (254) extends to the outer end of the through hole.

6. A mechanical seal with a self-locking function according to claim 5, characterized in that: The bottom end of the L-shaped stopper (254) is fixedly connected to the third spring (255), the other end of the third spring (255) is fixedly connected to the bottom end of the protective cover (250), and one side of the L-shaped stopper (254) is in contact with an L-shaped clamping block (251).

7. A mechanical seal with a self-locking function according to claim 6, characterized in that: The side wall of the L-shaped block (251) is rotatably connected to the inner wall of the protective cover (250); the other end of the L-shaped block (251) is fixedly connected to a second spring (253); the other end of the second spring (253) is fixedly connected to the inner wall of the protective cover (250); a through hole is provided at the bottom end of the protective cover (250); the bottom end of the L-shaped block (251) extends to the outer wall of the through hole; and the bottom end of the L-shaped block (251) abuts against the triangular block (260).

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