Corrosion-resistant sealing ring

Abstract

The utility model relates to the technical field of sealing rings, in particular to a corrosion-resistant sealing ring which comprises an installation ring, the top of the installation ring is movably connected with an upper back pressure ring, the bottom of the installation ring is movably connected with a lower back pressure ring, the surface of the installation ring is movably connected with a pressing ring, and the interior of the installation ring is fixedly connected with a valve core. An air bag is fixedly connected into the mounting ring, the top of the air bag is connected with a first extrusion ring in an abutting mode, the surface of the first extrusion ring is movably connected with a first buffer ring, the bottom of the air bag is connected with a second extrusion ring in an abutting mode, and the surface of the second extrusion ring is movably connected with a second buffer ring. According to the sealing ring, the air bag, the extrusion ring and the buffer ring are arranged, so that the sealing ring can be tightly attached to an object to be sealed, sealing is tighter, the sealing effect of the sealing ring is guaranteed, the positioning protrusions and the protruding blocks are arranged, the connection stability of all parts of the sealing ring is improved, and all the parts of the sealing ring are prevented from falling off and deviating from one another.

Description

Technical Field

[0001] The utility model belongs to the technical field of sealing rings, and particularly relates to a corrosion-resistant sealing ring. Background Art

[0002] For the mechanical pump body, since the sealing ring needs to withstand a certain pressure during the operation of the pump body, the sealing ring is an indispensable component. It is generally made of metal or non-metallic materials. It can ensure a tight connection between the pump body and the outer casing, and has good air tightness and oil tightness.

[0003] The existing sealing ring will deform after long-term use, and a gap will appear between the sealing ring and the object, resulting in a poor sealing effect. In addition, the existing sealing ring has poor structural stability and the various parts of the sealing ring are prone to falling off and shifting. Therefore, we propose a corrosion-resistant sealing ring. Utility Model Content

[0004] In order to overcome the above-mentioned technical problems, the purpose of the present invention is to provide a corrosion-resistant sealing ring to solve the problem proposed in the above-mentioned background technology that the existing sealing ring will deform after long-term use, and a gap will appear between the sealing ring and the object, resulting in a poor sealing effect, and the existing sealing ring has poor structural stability and the various parts of the sealing ring are prone to falling off and displacement.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a corrosion-resistant sealing ring, comprising a mounting ring, the top of the mounting ring is fixedly connected with ten groups of positioning protrusions 1, the bottom of the mounting ring is fixedly connected with ten groups of positioning protrusions 2, the top of the mounting ring is movably connected with an upper back pressure ring, the bottom of the mounting ring is movably connected with a lower back pressure ring, the surface of the mounting ring is movably connected with a clamping ring, the interior of the mounting ring is fixedly connected with a valve core, the interior of the mounting ring is fixedly connected with an airbag, the top of the airbag is abutted and connected with an extrusion ring 1, the surface of the extrusion ring 1 is fixedly connected with five groups of protrusions 1, the surface of the extrusion ring 1 is movably connected with a buffer ring 1, the bottom of the airbag is abutted and connected with an extrusion ring 2, the surface of the extrusion ring 2 is fixedly connected with five groups of protrusions 2, and the surface of the extrusion ring 2 is movably connected with a buffer ring 2.

[0006] Preferably, oblique grooves are provided on the surfaces of the upper back pressure ring and the lower back pressure ring, and the upper back pressure ring and the lower back pressure ring are made of plastic.

[0007] Preferably, ten groups of positioning protrusions 1 and ten groups of positioning protrusions 2 are respectively arranged on the top and bottom circumferences of the mounting ring, the surface of the upper back pressure ring is provided with ten groups of circular grooves 1 corresponding to the positioning protrusions 1, and the upper back pressure ring is inserted into the surface of the positioning protrusion 1 through the circular grooves 1, and the surface of the lower back pressure ring is provided with ten groups of circular grooves 2 corresponding to the positioning protrusions 2, and the lower back pressure ring is inserted into the surface of the positioning protrusions 2 through the circular grooves 2.

[0008] Preferably, the mounting ring is a hollow structure, the valve core passes through one side surface of the mounting ring, the valve core is fixedly connected to the airbag, and the airbag is annular.

[0009] Preferably, the bottom of the extrusion ring 1 contacts the surface of the airbag, five groups of the protrusions 1 are arranged on the circumference of the surface of the extrusion ring 1, and the bottom of the buffer ring 1 is provided with five groups of circular grooves 3 corresponding to the protrusions 1, and the buffer ring 1 is inserted into the surface of the protrusion 1 through the circular grooves 3.

[0010] Preferably, the top of the extrusion ring 2 contacts the surface of the airbag, five groups of the protrusions 2 are arranged on the surface circumference of the extrusion ring 2, and five groups of circular grooves 4 corresponding to the protrusions 2 are opened on the top of the buffer ring 2, and the buffer ring 2 is inserted into the surface of the protrusion 2 through the circular grooves 4.

[0011] Preferably, the mounting ring and the clamping ring are made of fluorosilicone rubber, and the surfaces of the mounting ring and the clamping ring are coated with polytetrafluoroethylene.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. This corrosion-resistant sealing ring is provided with an airbag, an extrusion ring and a buffer ring. After the sealing ring is put on the object to be sealed, the airbag is inflated through the valve core. After the airbag expands, it pushes the extrusion ring toward the top and bottom. The extrusion ring presses the buffer ring and the inner wall of the mounting ring. At the same time, the airbag squeezes the compression ring and the object to be sealed against each other, so that the sealing ring can be tightly attached to the object to be sealed, thereby making the seal tighter and ensuring the sealing effect of the sealing ring.

[0014] 2. This corrosion-resistant sealing ring is provided with positioning protrusions and bumps. When assembling the sealing ring, the upper and lower back pressure rings and the mounting ring are positioned and limited by the positioning protrusions, and the extrusion ring and the buffer ring are positioned and limited by the bumps, thereby improving the connection stability of the various parts of the sealing ring and preventing the various parts of the sealing ring from falling off and offsetting from each other. After the airbag is deflated through the valve core, the internal components of the sealing ring can be replaced, which is more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1It is a schematic front view of the structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the explosion structure of the upper back pressure ring, the lower back pressure ring and the clamping ring of the utility model;

[0017] Figure 3 This is a schematic diagram of the explosion structure of the utility model;

[0018] Figure 4 This is a structural sectional view of the utility model;

[0019] Figure 5 This is an exploded schematic diagram of the internal structure of the mounting ring of the utility model.

[0020] In the figure: 1. Mounting ring; 2. Positioning protrusion 1; 3. Positioning protrusion 2; 4. Upper back pressure ring; 5. Lower back pressure ring; 6. Clamping ring; 7. Valve core; 8. Air bag; 9. Extrusion ring 1; 10. Bump 1; 11. Buffer ring 1; 12. Extrusion ring 2; 13. Bump 2; 14. Buffer ring 2. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figure 1-5 , an embodiment provided by the utility model:

[0023] A corrosion-resistant sealing ring comprises a mounting ring 1, wherein the top of the mounting ring 1 is fixedly connected with ten groups of positioning protrusions 2, the bottom of the mounting ring 1 is fixedly connected with ten groups of positioning protrusions 2, the top of the mounting ring 1 is movably connected with an upper back pressure ring 4, the bottom of the mounting ring 1 is movably connected with a lower back pressure ring 5, the surface of the mounting ring 1 is movably connected with a clamping ring 6, the interior of the mounting ring 1 is fixedly connected with a valve core 7, the interior of the mounting ring 1 is fixedly connected with an air bag 8, the top of the air bag 8 is abutted and connected with an extrusion ring 9, the surface of the extrusion ring 9 is fixedly connected with five groups of protrusions 10, the surface of the extrusion ring 9 is movably connected with a buffer ring 11, the bottom of the air bag 8 is abutted and connected with an extrusion ring 2 12, the surface of the extrusion ring 2 12 is fixedly connected with five groups of protrusions 2 13, and the surface of the extrusion ring 2 12 is movably connected with a buffer ring 2. The airbag 8, extrusion ring and buffer ring are arranged. After the sealing ring is put on the object to be sealed, the airbag 8 is inflated through the valve core 7. After the airbag 8 expands, it pushes the extrusion ring toward the top and bottom. The extrusion ring presses the buffer ring and the inner wall of the mounting ring 1. At the same time, the airbag 8 squeezes the compression ring 6 and the object to be sealed against each other, so that the sealing ring can be close to the object to be sealed, thereby making the seal tighter and ensuring the sealing effect of the sealing ring. Positioning protrusions and bumps are provided. When assembling the sealing ring, the upper and lower back pressure rings and the mounting ring 1 are positioned and limited by the positioning protrusions, and the extrusion ring and the buffer ring are positioned and limited by the bumps, which improves the connection stability of the various parts of the sealing ring and prevents the various parts of the sealing ring from falling off and offsetting each other. After the airbag 8 is deflated through the valve core 7, the internal components of the sealing ring can be replaced, which is more convenient to use.

[0024] Furthermore, oblique grooves are provided on the surfaces of the upper back pressure ring 4 and the lower back pressure ring 5. The upper back pressure ring 4 and the lower back pressure ring 5 are made of plastic. The upper back pressure ring 4 and the lower back pressure ring 5 have a certain elasticity. The upper back pressure ring 4 and the lower back pressure ring 5 can be twisted within a certain range through the oblique grooves, which facilitates the installation of the upper back pressure ring 4 and the lower back pressure ring 5.

[0025] Furthermore, ten groups of positioning protrusions 1 2 and ten groups of positioning protrusions 2 3 are respectively arranged on the top and bottom circumferences of the mounting ring 1, and the surface of the upper back pressure ring 4 is provided with ten groups of circular grooves 1 corresponding to the positioning protrusions 1 2. The upper back pressure ring 4 is inserted into the surface of the positioning protrusion 1 2 through the circular grooves 1, and the surface of the lower back pressure ring 5 is provided with ten groups of circular grooves 2 corresponding to the positioning protrusions 2 3. The lower back pressure ring 5 is inserted into the surface of the positioning protrusions 2 3 through the circular grooves 2. The upper back pressure ring 4 and the lower back pressure ring 5 are positioned and limited by the positioning protrusions 1 2 and the positioning protrusions 2 3 respectively between the upper back pressure ring 4 and the lower back pressure ring 5 and the mounting ring 1, thereby improving the connection stability.

[0026] Furthermore, the mounting ring 1 is a hollow structure, the valve core 7 passes through one side surface of the mounting ring 1 , the valve core 7 is fixedly connected to the airbag 8 , the airbag 8 is annular, and the airbag 8 is inflated through the valve core 7 .

[0027] Furthermore, the bottom of the extrusion ring 9 contacts the surface of the airbag 8, five groups of protrusions 10 are arranged on the surface circumference of the extrusion ring 9, and five groups of circular grooves three corresponding to the protrusions 10 are opened at the bottom of the buffer ring 11. The buffer ring 11 is inserted into the surface of the protrusion 10 through the circular grooves three, and the extrusion ring 9 and the buffer ring 11 are positioned and limited by the protrusions 10.

[0028] Furthermore, the top of the extrusion ring 12 contacts the surface of the airbag 8, five groups of protrusions 13 are arranged on the surface circumference of the extrusion ring 12, and five groups of circular grooves 4 corresponding to the protrusions 13 are opened on the top of the buffer ring 14. The buffer ring 14 is inserted into the surface of the protrusion 13 through the circular grooves 4, and the extrusion ring 12 and the buffer ring 14 are positioned and limited by the protrusions 13.

[0029] Furthermore, the mounting ring 1 and the clamping ring 6 are made of fluorosilicone rubber, and the surfaces of the mounting ring 1 and the clamping ring 6 are coated with polytetrafluoroethylene coating. Fluorosilicone rubber has good high temperature resistance and chemical corrosion resistance. The polytetrafluoroethylene coating significantly improves the corrosion and wear resistance of the sealing ring.

[0030] Working principle: When in use, the airbag 8 is inflated through the valve core 7. After the airbag 8 expands, it pushes the extrusion ring toward the top and bottom. The extrusion ring presses the buffer ring and the inner wall of the mounting ring 1. At the same time, the airbag 8 squeezes the compression ring 6 and the object to be sealed against each other, so that the sealing ring can be tightly attached to the object to be sealed. When assembling the sealing ring, the upper back pressure ring 4 and the lower back pressure ring 5 are positioned and limited by the positioning protrusion 1 2 and the positioning protrusion 2 3 respectively, so as to improve the connection stability of the various parts of the sealing ring and prevent the various parts of the sealing ring from falling off and offsetting each other. After the airbag 8 is deflated through the valve core 7, the internal components of the sealing ring can be replaced, which is more convenient to use.

[0031] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A corrosion-resistant sealing ring, comprising a mounting ring (1), characterized in that: The top of the mounting ring (1) is fixedly connected with ten groups of positioning protrusions (2), the bottom of the mounting ring (1) is fixedly connected with ten groups of positioning protrusions (3), the top of the mounting ring (1) is movably connected with an upper back pressure ring (4), the bottom of the mounting ring (1) is movably connected with a lower back pressure ring (5), the surface of the mounting ring (1) is movably connected with a clamping ring (6), the interior of the mounting ring (1) is fixedly connected with a valve core (7), and the interior of the mounting ring (1) is fixedly connected with a valve core (8). An air bag (8) is connected, the top of the air bag (8) is abutted and connected with an extrusion ring (9), the surface of the extrusion ring (9) is fixedly connected with five groups of protrusions (10), the surface of the extrusion ring (9) is movably connected with a buffer ring (11), the bottom of the air bag (8) is abutted and connected with an extrusion ring (12), the surface of the extrusion ring (12) is fixedly connected with five groups of protrusions (13), and the surface of the extrusion ring (12) is movably connected with a buffer ring (14).

2. The corrosion-resistant sealing ring according to claim 1, characterized in that: Oblique grooves are provided on the surfaces of the upper back pressure ring (4) and the lower back pressure ring (5), and the upper back pressure ring (4) and the lower back pressure ring (5) are made of plastic.

3. The corrosion-resistant sealing ring according to claim 1, characterized in that: Ten groups of positioning protrusions (2) and ten groups of positioning protrusions (3) are respectively arranged on the top and bottom circumferences of the mounting ring (1); the surface of the upper back pressure ring (4) is provided with ten groups of circular grooves (1) corresponding to the positioning protrusions (2); the upper back pressure ring (4) is plugged into the surface of the positioning protrusions (2) through the circular grooves (1); the surface of the lower back pressure ring (5) is provided with ten groups of circular grooves (2) corresponding to the positioning protrusions (3); the lower back pressure ring (5) is plugged into the surface of the positioning protrusions (3) through the circular grooves (2).

4. The corrosion-resistant sealing ring according to claim 1, characterized in that: The mounting ring (1) is of a hollow structure, the valve core (7) penetrates one side surface of the mounting ring (1), the valve core (7) is fixedly connected to the air bag (8), and the air bag (8) is annular.

5. The corrosion-resistant sealing ring according to claim 1, characterized in that: The bottom of the extrusion ring (9) contacts the surface of the airbag (8), and five groups of protrusions (10) are arranged on the circumference of the surface of the extrusion ring (9). The bottom of the buffer ring (11) is provided with five groups of circular grooves (3) corresponding to the protrusions (10), and the buffer ring (11) is inserted into the surface of the protrusion (10) through the circular grooves (3).

6. The corrosion-resistant sealing ring according to claim 1, characterized in that: The top of the extrusion ring 2 (12) contacts the surface of the airbag (8), and five groups of protrusions 2 (13) are arranged on the circumference of the surface of the extrusion ring 2 (12). The top of the buffer ring 2 (14) is provided with five groups of circular grooves 4 corresponding to the protrusions 2 (13), and the buffer ring 2 (14) is inserted into the surface of the protrusion 2 (13) through the circular grooves 4.

7. The corrosion-resistant sealing ring according to claim 1, characterized in that: The mounting ring (1) and the clamping ring (6) are made of fluorosilicone rubber, and the surfaces of the mounting ring (1) and the clamping ring (6) are coated with a polytetrafluoroethylene coating.

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