Mechanical sealing structure with anti-vibration function

Abstract

The utility model discloses a mechanical sealing structure with an anti-vibration function, which relates to the technical field of sealing structures and comprises a first flexible sealing sleeve, a second flexible sealing sleeve, a first elastic sleeve, a second elastic sleeve, an external thread bump and an internal thread groove. The external thread convex block can be inserted into different positions on the inner side of the internal thread groove, and each thread between the external thread convex block and the internal thread groove is subjected to primary sealing treatment, so that the sealing performance of the device can be effectively improved; in the process that the external thread protruding blocks are continuously inserted into the internal thread grooves, the external thread protruding blocks and the structures of the inner walls of the internal thread grooves are continuously subjected to cyclic switching among the extruding and jacking state, the buffering and loosening state and the extruding and jacking state, so that when the first flexible sealing sleeve and the second flexible sealing sleeve are subjected to vibration acting force, the first flexible sealing sleeve and the second flexible sealing sleeve are tightly sealed. Elastic buffering is carried out between the external thread protruding block and the internal thread groove, and the anti-vibration performance of the device can be effectively guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to a sealing structure technical field, concretely is a mechanical sealing structure with anti vibration function. BACKGROUND

[0002] Common sealing structure mainly includes: piston sealing structure, mechanical sealing structure, bellows sealing structure, magnetic force sealing structure and liquid sealing structure. Mechanical sealing structure refers to mechanical sealing element, such as mechanical sealing ring, packing seal etc. and is the structure that realizes sealing through mechanical friction.

[0003] Patent (CN220566577U) discloses a kind of mechanical sealing element with anti vibration function, wherein including shaft sleeve, the outer wall of the shaft sleeve is connected with fastening bolt by screw thread, one end of the shaft sleeve is fixedly connected with sealing cover, anti vibration mechanism is fixedly installed in the inside of one side of the sealing cover, the anti vibration mechanism includes limit block, mobile slot is formed in the side of the limit block, anti vibration clamp is slidably connected in the inner wall of the mobile slot, first spring is fixedly installed in the side of the anti vibration clamp, second spring is fixedly installed in the inside of the sealing cover. When the first spring compression length changes with the vibration of rotating shaft when rotating shaft vibrates under the action of the first spring and anti vibration clamp of this anti vibration mechanism, so that anti vibration clamp is always clamped to rotating shaft and kept in fixed position, thereby avoiding the problem that sealing ring produces a momentary gap due to rotating shaft vibration, reduces the sealing property, greatly improve the anti vibration effect of device.

[0004] The mechanical sealing element with anti vibration function in the above patent mainly uses multiple springs for anti vibration treatment, but the spring is in compression state for a long time when used in sealing element, which is easy to be damaged and cause the sealing performance of sealing element to decrease sharply. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of mechanical sealing structure with anti vibration function to solve the problems raised in the above background.

[0006] To solve the above technical problems, the utility model provides the following technical scheme: a kind of mechanical sealing structure with anti vibration function, including first flexible sealing sleeve and second flexible sealing sleeve, the first flexible sealing sleeve and second flexible sealing sleeve, the first flexible sealing sleeve outer wall is equipped with first elastic sleeve, the second flexible sealing sleeve inner wall is equipped with the second elastic sleeve matched with first elastic sleeve, the first elastic sleeve outer wall is equipped with external thread boss, the second elastic sleeve inner wall is equipped with the internal thread recess matched with external thread boss.

[0007] Further, the first elastic sleeve inner wall is provided with a first cavity inside the thread tooth of the outer thread convex block, and the second elastic sleeve inner wall is provided with a second cavity inside the tooth gap of the inner thread groove.

[0008] Further, the first cavity is distributed in a spiral structure along the outer thread convex block, and the second cavity is distributed in a spiral structure along the tooth gap of the inner thread groove.

[0009] Further, the first cavity is provided with a first elastic support strip in the center, the outer wall of the first elastic support strip is provided with a plurality of second elastic support strips, and the second elastic support strips are fixedly connected with the inner wall of the first cavity.

[0010] Further, the second cavity is provided with a third elastic support strip in the center, the outer wall of the third elastic support strip is provided with a plurality of fourth elastic support strips, and the fourth elastic support strips are fixedly connected with the inner wall of the second cavity.

[0011] Further, the thread tooth type of the outer thread convex block is one of rectangular thread, trapezoidal thread or sawtooth thread.

[0012] Further, the outer wall of the second flexible sealing sleeve is provided with a sealing gasket at one end, and the outer wall of the sealing gasket is provided with a buffer gasket away from the second flexible sealing sleeve.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] 1、The utility model discloses a first flexible sealing sleeve, a second flexible sealing sleeve, a first elastic sleeve, a second elastic sleeve, an outer thread convex block, an inner thread groove, the outer thread convex block and the inner thread groove are made of elastic material, so that the outer thread convex block can be inserted into different positions of the inner side of the inner thread groove, and each thread between the outer thread convex block and the inner thread groove is a sealing treatment, which can effectively improve the sealing performance of the device.

[0015] 2、The utility model discloses, first cavity is in the first elastic sleeve inside the buffer support to the external thread boss, make the elastic buffer performance of the external thread boss of first elastic sleeve outer wall better, and then improve the anti -vibration performance of sealing structure, second cavity is in the second elastic sleeve inside the buffer support to the tooth gap of internal thread recess, make the elastic buffer performance of the tooth gap of internal thread recess of second elastic sleeve inner wall better, and then improve the anti -vibration performance of sealing structure, first cavity can be with the modeling alignment of external thread boss, and every position of external thread boss can normally carry out the elastic buffer deformation, and the buffer support of first cavity to external thread boss is more uniform and stable, second cavity can be with the tooth gap alignment of internal thread recess, and every position of the tooth gap of internal thread recess can normally carry out the elastic buffer deformation, and the buffer support of second cavity to the tooth gap of internal thread recess is more uniform and stable. BRIEF DESCRIPTION OF DRAWINGS

[0016] The accompanying drawings are included to provide a further understanding of the present application and are incorporated in and constitute a part of this specification, illustrate embodiments of the present application and are included to provide a further understanding of the present application, and do not constitute a limitation of the present application. In the drawings:

[0017] Figure 1 It is the structure schematic diagram of the whole of the utility model;

[0018] Figure 2 It is the structure schematic diagram of the second flexible sealing sleeve of the utility model;

[0019] Figure 3 It is the structure schematic diagram of another angle of the second flexible sealing sleeve of the utility model;

[0020] Figure 4 It is the main view cross section of the whole of the utility model;

[0021] Figure 5 It is the structure schematic diagram of the second flexible sealing sleeve of the utility model; Figure 4 The enlarged schematic diagram of A in the utility model;

[0022] Figure 6 It is the main view cross section of the second flexible sealing sleeve of the utility model.

[0023] In the drawing: 1, first flexible sealing sleeve;2, second flexible sealing sleeve;3, first elastic sleeve;301, external thread boss;302, first cavity;303, first elastic support strip;304, second elastic support strip;4, second elastic sleeve;401, internal thread recess;402, second cavity;403, third elastic support strip;404, fourth elastic support strip;5, sealing washer;6, buffer gasket. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0025] Please refer to Figures 1-6 The utility model provides technical scheme: a mechanical seal structure with anti vibration function, including first flexible seal sleeve 1 and second flexible seal sleeve 2, first flexible seal sleeve 1 and second flexible seal sleeve 2, first flexible seal sleeve 1 outer wall is equipped with first elastic sleeve 3, second flexible seal sleeve 2 inner wall is equipped with the second elastic sleeve 4 that matches first elastic sleeve 3, first elastic sleeve 3 outer wall is equipped with outer thread boss 301, second elastic sleeve 4 inner wall is equipped with the internal thread recess 401 that matches outer thread boss 301.

[0026] In an embodiment, the first elastic sleeve 3 inner wall is provided with a first cavity 302 inside the thread tooth of the outer thread boss 301, the first cavity 302 buffers and supports the outer thread boss 301 inside the first elastic sleeve 3, so that the elastic buffering performance of the outer thread boss 301 of the outer wall of the first elastic sleeve 3 is better, thereby improving the anti-vibration performance of the sealing structure; the second elastic sleeve 4 inner wall is provided with a second cavity 402 inside the tooth gap of the internal thread recess 401, the second cavity 402 buffers and supports the tooth gap of the internal thread recess 401 inside the second elastic sleeve 4, so that the elastic buffering performance of the tooth gap of the internal thread recess 401 of the inner wall of the second elastic sleeve 4 is better, thereby improving the anti-vibration performance of the sealing structure.

[0027] In an embodiment, the first cavity 302 is distributed in a spiral structure along the outer thread boss 301, so that the first cavity 302 can be aligned with the shape of the outer thread boss 301, and each position of the outer thread boss 301 can normally perform elastic buffering deformation, and the buffering and supporting of the first cavity 302 to the outer thread boss 301 is more uniform and stable; the second cavity 402 is distributed in a spiral structure along the tooth gap of the internal thread recess 401, so that the second cavity 402 can be aligned with the tooth gap of the internal thread recess 401, and each position of the tooth gap of the internal thread recess 401 can normally perform elastic buffering deformation, and the buffering and supporting of the second cavity 402 to the tooth gap of the internal thread recess 401 is more uniform and stable.

[0028] In one embodiment, the first cavity 302 is internally centrally provided with a first elastic support strip 303, the outer wall of the first elastic support strip 303 is provided with a plurality of second elastic support strips 304, the second elastic support strips 304 are fixedly connected with the inner wall of the first cavity 302, the first elastic support strip 303 supports in the internal center of the first cavity 302, and the second elastic support strips 304 elastically support between the first elastic support strip 303 and the inner wall of the first cavity 302, so that the buffering support performance inside the first cavity 302 can be effectively improved, the first cavity 302 can normally and quickly rebound, the outer threaded convex block 301 of the outer wall of the first elastic sleeve 3 can be normally inserted into the inner threaded groove 401 inside the inner wall of the second elastic sleeve 4, and the elastic contact and jacking sealing of the outer threaded convex block 301 and the inner wall of the inner threaded groove 401 can be improved.

[0029] In one embodiment, the second cavity 402 is internally centrally provided with a third elastic support strip 403, the outer wall of the third elastic support strip 403 is provided with a plurality of fourth elastic support strips 404, the fourth elastic support strips 404 are fixedly connected with the inner wall of the second cavity 402, the third elastic support strip 403 supports in the internal center of the second cavity 402, and the fourth elastic support strips 404 elastically support between the third elastic support strip 403 and the inner wall of the second cavity 402, so that the buffering support performance inside the second cavity 402 can be effectively improved, the second cavity 402 can normally and quickly rebound, the outer threaded convex block 301 of the outer wall of the first elastic sleeve 3 can be normally inserted into the inner threaded groove 401 inside the inner wall of the second elastic sleeve 4, and the elastic contact and jacking sealing of the outer threaded convex block 301 and the inner wall of the inner threaded groove 401 can be improved.

[0030] In one embodiment, the thread type of the outer threaded convex block 301 is one of rectangular thread, trapezoidal thread or sawtooth thread, the thread type of the outer threaded convex block 301 is limited, so that the contact and jacking sealing effect of the outer threaded convex block 301 and the inner threaded groove 401 can be guaranteed, and the sealing performance can also be guaranteed under the action of vibration.

[0031] In one embodiment, the outer wall of the second flexible sealing sleeve 2 is provided with a sealing gasket 5 at one end, the outer wall of the sealing gasket 5 is provided with a buffer gasket 6 away from the side of the second flexible sealing sleeve 2, the sealing gasket 5 can be sealed and supported between the two first flexible sealing sleeves 1 and the second flexible sealing sleeve 2, so that the sealing performance can be improved, the buffer gasket 6 can be buffer protection supported between the two first flexible sealing sleeves 1 and the second flexible sealing sleeve 2, so that the sealing performance can be guaranteed, and the assembly stability of the first flexible sealing sleeve 1 and the second flexible sealing sleeve 2 can be guaranteed.

[0032] The working principle of the utility model:

[0033] Refer to the description of the drawings Figures 1-6The utility model discloses a first flexible sealing sleeve 1, second flexible sealing sleeve 2, first elastic cover 3, second elastic cover 4, male screw bump 301, female screw groove 401 are set to, the first flexible sealing sleeve 1 is covered in the outer wall of one pipe element, and the second flexible sealing sleeve 2 is covered in the inner wall of another pipe element, and the first elastic cover 3 is covered in the outer wall of one pipe element along with the first flexible sealing sleeve 1, and the second elastic cover 4 is covered in the outer wall of another pipe element along with the second flexible sealing sleeve 2, so that male screw bump 301 is distributed in the outer wall of one pipe element, and female screw groove 401 is distributed in the inner wall of another pipe element, then the pipe element with first flexible sealing sleeve 1 is inserted into the inside of the pipe element with second flexible sealing sleeve 2, so that male screw bump 301 of the outer wall of first elastic cover 3 is inserted into the inside of female screw groove 401 of the inner wall of second elastic cover 4, and male screw bump 301 and female screw groove 401 are constantly extruded deformation each other, although male screw bump 301 and female screw groove 401 are not assembled in the device with spiral tightening mode, but male screw bump 301 and female screw groove 401 are made of elastic material, so that male screw bump 301 can be inserted into the different position of the inside of female screw groove 401, can select the insertion depth of male screw bump 301 in the inside of female screw groove 401 according to the need, so that first elastic cover 3 and second elastic cover 4 are fastened and sealed connection, and in the process of being pressed tightly between first elastic cover 3 and second elastic cover 4, first flexible sealing sleeve 1 and second flexible sealing sleeve 2 are pressed tightly and sealed with two pipe elements, and every thread between male screw bump 301 and female screw groove 401 is one sealing treatment, can effectively improve the sealing performance of the device, because the elastic sealing design of male screw bump 301 and female screw groove 401 is adopted between the sealing structure, in the process that male screw bump 301 is constantly inserted into the inside of female screw groove 401, male screw bump 301 is constantly extruded and pressed tightly, buffer relaxation, extruded and pressed tightly state between the structure of the inner wall of female screw groove 401, so that first flexible sealing sleeve 1 and second flexible sealing sleeve 2 are subjected to the vibration force, and the elastic buffer between male screw bump 301 and female screw groove 401 can effectively guarantee the anti-vibration performance of the device.

[0034] Finally, it should be noted that: the above only for preferred embodiment of the utility model has described, and does not limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiment, for the person skilled in the art, still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features. Any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the utility model, should be included in the protection scope of the utility model.

Claims

1. A mechanical seal structure having an anti-vibration function, comprising a first flexible seal sleeve (1) and a second flexible seal sleeve (2), characterized in that: The first flexible sealing sleeve (1) is provided with a first elastic sleeve (3) on the outer wall, and the second flexible sealing sleeve (2) is provided with a second elastic sleeve (4) matched with the first elastic sleeve (3) on the inner wall.

2. The mechanical seal structure with anti-vibration function according to claim 1, characterized in that: The first elastic sleeve (3) is provided with a first cavity (302) inside the thread tooth of the outer thread convex block (301), and the second elastic sleeve (4) is provided with a second cavity (402) inside the tooth gap of the inner thread groove (401).

3. The mechanical seal structure with anti-vibration function according to claim 2, characterized in that: The first cavity (302) is distributed in a spiral structure along the outer thread convex block (301), and the second cavity (402) is distributed in a spiral structure along the tooth gap of the inner thread groove (401).

4. The mechanical seal structure with anti-vibration function according to claim 2, characterized in that: The first cavity (302) is provided with a first elastic support strip (303) in the center, the outer wall of the first elastic support strip (303) is provided with a plurality of second elastic support strips (304), and the second elastic support strips (304) are fixedly connected with the inner wall of the first cavity (302).

5. The mechanical seal structure with anti-vibration function according to claim 2, characterized in that: The second cavity (402) is provided with a third elastic support strip (403) in the center, the outer wall of the third elastic support strip (403) is provided with a plurality of fourth elastic support strips (404), and the fourth elastic support strips (404) are fixedly connected with the inner wall of the second cavity (402).

6. The mechanical seal structure with anti-vibration function according to claim 1, characterized in that: The thread tooth type of the outer thread convex block (301) is one of rectangular thread, trapezoidal thread or sawtooth thread.

7. The mechanical seal structure with anti-vibration function according to claim 1, characterized in that: The outer wall of the second flexible sealing sleeve (2) is provided with a sealing gasket (5) at one end, and the outer wall of the sealing gasket (5) is provided with a buffer gasket (6) away from the second flexible sealing sleeve (2).

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