Rubber sealing gasket for mechanical sealing

Abstract

The utility model relates to the technical field of mechanical sealing, in particular to a rubber sealing gasket for mechanical sealing, which comprises a main body, the main body comprises a working surface and a mounting surface, the main body is provided with a mounting hole, and the rubber sealing gasket also comprises a protection component which is arranged on the working surface and is used for reducing the friction on the working surface and prolonging the service life of the sealing gasket; and a flange part mounted on the working surface. By arranging the oil storage cavity and the annular oil groove, lubricating oil is effectively supplemented in the recycling process, the number of times of dismounting the gasket due to the fact that the lubricating oil is used up is greatly reduced, the maintenance efficiency is improved, by arranging the flange part, the sealing effect of the gasket is improved, the lubricating oil is prevented from leaking from the annular oil groove, and the service life of the gasket is prolonged. The air cavity is formed in the sealing gasket to play a role in buffering, the magnitude and frequency of vibration are reduced, so that the sealing gasket is protected against damage, and the arc-shaped groove and the deformation angle are arranged, so that the contact area with the mounting groove is enlarged, and the sealing performance of the gasket is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical seal technical field especially is related to a rubber sealing gasket for mechanical seal. BACKGROUND

[0002] Mechanical seal refers to by at least one pair of perpendicular to the rotation axis end face under the action of fluid pressure and compensation mechanism elastic force (or magnetic force) and the cooperation of auxiliary seal, the pair of end face keeps close and relative sliding and constructs the device that prevents fluid leakage.

[0003] Through the retrieval, the rubber sealing gasket provided by the Chinese utility model patent with the authorization announcement No. CN 209164579 U includes a sealing gasket body, the sealing gasket body is connected in head by detachable arc-shaped sealing gasket assembly and is spliced, the two ends of the arc-shaped sealing gasket assembly are respectively provided with interface end and joint end, the joint end and the interface end are provided with plug and slot, the plug of the joint end is arranged on the outer arc of the arc-shaped sealing gasket assembly, the slot of the joint end is arranged on the inner arc of the arc-shaped sealing gasket assembly, the plug of the interface end is arranged on the inner arc of the arc-shaped sealing gasket assembly, and the slot of the interface end is arranged on the outer arc of the arc-shaped sealing gasket assembly.The utility model has the effects of convenient combination and easy disassembly, can adjust size, is sealed tightly, and is convenient to maintain.

[0004] But the sealing gasket at least has the following technical defects:

[0005] 1, the sealing gasket is combined and assembled by arc-shaped sealing gasket assembly to form a new sealing gasket body, the size of the sealing gasket body can be adjusted according to the number of arc-shaped sealing gasket assembly, and the plug and the slot are connected by interference fit, so that the combination is simple and the disassembly is convenient, but there are gaps between the components, especially when being extruded, the gap between the sealing gasket components becomes larger, which affects the sealing effect of the sealing gasket as a whole.

[0006] 2, the sealing gasket, in specific use, because two sides are in contact with connecting pieces respectively, the skilled person in the art knows that the sealing gasket will be affected by friction in work, and the friction must exist and needs to be used to improve the sealing effect of the gasket, but the above structure cannot effectively solve the technical problem of prolonging the service life of the sealing gasket under the condition of friction. UTILITY MODEL CONTENTS

[0007] The utility model provides a rubber sealing gasket for mechanical seal in view of the deficiency of prior art, effectively solve the problem raised in the background art.

[0008] The technical scheme adopted by the utility model for solving the above-mentioned problems is: a rubber sealing gasket for mechanical seal, including main body, the main body includes working surface and installation surface, installation hole is set up on the main body, further including protection assembly, install on the working surface, be used for reducing the friction that the working surface receives, prolong the service life of the sealing gasket;

[0009] Lug portion, install on the working surface, for improving the sealing effect of the sealing gasket, avoid lubricating oil leakage, keep lubricating oil clean;

[0010] Sealing portion, install on the inner wall of the installation hole of the main body, for improving the damping effect of the sealing gasket;

[0011] Oil storage portion, install on the outer edge of the main body, for storing lubricating oil, reduce the dismounting frequency of the device;

[0012] Deformation portion, set up on the installation surface, for the deformation of the main body of the sealing gasket when receiving pressure, improve the sealing effect of the main body.

[0013] Preferably, the protection assembly includes a ring-shaped oil groove set up on the working surface, and the ring-shaped oil groove is used for storing lubricating oil.

[0014] Preferably, the ring-shaped oil groove is provided with a detachable leakage-proof sheet in interference fit, and the leakage-proof sheet is detached after the main body is installed.

[0015] Preferably, the oil storage portion is a ring-shaped structure integrally formed with the main body, the oil storage portion is internally provided with a ring-shaped oil storage cavity, and the oil storage cavity is provided with at least three through grooves communicating with the ring-shaped oil groove.

[0016] Preferably, the through groove is arc-shaped, used for resisting the phenomenon that the inner wall of the through groove is closed due to pressure received by the working surface.

[0017] Preferably, the oil storage cavity is a semi-ring-shaped structure, three through grooves in the oil storage cavity communicate with the ring-shaped oil groove, and the semi-ring-shaped oil storage cavity is used for improving the utilization rate of lubricating oil and avoiding waste.

[0018] Preferably, the sealing portion is a ring-shaped structure integrally formed with the inner wall of the installation groove set up on the main body, the sealing portion is internally provided with an air cavity, and the air cavity internally stores gas for reducing damage of mechanical vibration to the air cushion.

[0019] Preferably, the lug portion includes at least two ring-shaped protrusions, the ring-shaped protrusions are integrally formed with the main body, the ring-shaped oil groove is set up between the two ring-shaped protrusions, the ring-shaped protrusions are in surface contact with the sealing element, and the ring-shaped protrusions are used for preventing lubricating oil in the ring-shaped oil groove from leaking.

[0020] Preferably, the deformation part comprises an arc-shaped slot formed on the mounting surface, and two deformation angles arranged between the arc-shaped slot and the main body, and the connecting parts between the two deformation angles and the main body and the arc-shaped slot are respectively provided with arc-shaped chamfers.

[0021] The utility model discloses novel structure, clever idea, simple and convenient operation has the following advantages compared with prior art:

[0022] 1, the utility model discloses through setting up oil storage cavity and annular oil groove, make lubricating oil in the process of cyclic use get effective supplement, when the main body installs, the lubricating oil in oil storage cavity will be extruded into annular oil groove, like this, in the gasket use process, if find that lubricating oil is deficient, only need through the supplement lubricating oil in oil storage cavity, can supplement in time to annular oil groove. Like this can greatly reduce the gasket dismounting frequency because lubricating oil is used up, improve the maintenance efficiency, save maintenance cost.

[0023] 2, through setting up flange portion, increase the sealing effect of gasket, avoided the leakage of lubricating oil from annular oil groove, improved the cleanliness of gasket, prolonged the service life of gasket.

[0024] 3, the air cavity formed on the sealing pad can play a buffering role, reducing the size and frequency of vibration, thereby protecting the sealing pad from damage and prolonging the service life of the sealing pad.

[0025] 4, by setting up arc-shaped slot and deformation angle not only enlarge the contact area with mounting groove and improve the sealing property of gasket, but also due to the characteristics of arc-shaped slot, it is not easy to tear when deforming, and the recovery performance is good, therefore, the improvement of the above structure is more conducive to improving the service life of the sealing pad. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a working surface structure diagram of a rubber sealing pad for mechanical sealing of the utility model Figure 1 .

[0027] Figure 2 It is a working surface structure diagram of a rubber sealing pad for mechanical sealing of the utility model Figure 2 .

[0028] Figure 3 It is an installation surface structure diagram of a rubber sealing pad for mechanical sealing of the utility model.

[0029] Figure 4 It is a partial sectional view of a rubber sealing pad for mechanical sealing of the utility model.

[0030] 1-Main body, 101-Working surface, 102-Mounting surface, 2-Protective component, 201-Leak-proof plate, 202-Annular oil groove, 203-Through groove, 3-Flange, 4-Sealing part, 401-Air cavity, 5-Oil storage part, 501-Oil storage cavity, 6-Deformable part, 601-Arc groove, 602-Deformation angle. Detailed Implementation

[0031] The following are specific embodiments of the present invention, and the technical solution of the present invention will be further described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0032] Example 1

[0033] like Figures 1-4 As shown, this utility model provides a rubber sealing gasket for mechanical seals, including a main body 1. The main body 1 includes a working surface 101 and a mounting surface 102. The main body 1 has a mounting hole and also includes a protective component 2, which is installed on the working surface 101 to reduce the friction on the working surface and extend the service life of the sealing gasket.

[0034] The flange 3 is installed on the working surface 101 to improve the sealing effect of the gasket, prevent lubricating oil leakage, and keep the lubricating oil clean.

[0035] The sealing part 4 is installed on the inner wall of the mounting hole on the main body 1 to improve the shock absorption effect of the sealing gasket.

[0036] The oil storage section 5 is installed on the outer edge of the main body 1 and is used to store lubricating oil, reducing the number of times the device is disassembled.

[0037] The deformable part 6 is provided on the mounting surface 102 and is used to deform the sealing gasket body 1 when it is subjected to pressure, thereby improving the sealing effect of the body 1.

[0038] The protective component 2 includes an annular oil groove 202 formed on the working surface 101, which is used to store lubricating oil.

[0039] The annular oil groove 202 is fitted with a removable leak-proof sheet 201, which is removed after the main body is installed.

[0040] The oil storage section 5 is an annular structure integrally formed with the main body 1. The oil storage section 5 has an annular oil storage cavity 501 inside, and the oil storage cavity 501 has at least three through grooves 203 that communicate with the annular oil groove 202.

[0041] The through groove 203 is arc-shaped to resist the phenomenon of the inner wall of the through groove closing due to the pressure on the working surface 101.

[0042] The sealing part 4 is annular structure which is integrally formed with the inner wall of the mounting groove on the main body 1, and the gas cavity 401 is arranged in the sealing part 4, and the gas cavity 401 stores gas to reduce the damage of mechanical vibration to the air cushion.

[0043] The flange part 3 includes at least two annular protrusions which are integrally formed with the main body 1, and the annular oil groove 202 is arranged between the two annular protrusions, and the annular protrusions are in contact with the sealing part to prevent the lubricating oil in the annular oil groove 202 from leaking.

[0044] The deformation part 6 includes the arc-shaped groove 601 arranged on the mounting surface 102, and the two deformation angles 602 arranged between the arc-shaped groove 601 and the main body 1, and the connecting parts between the two deformation angles 602 and the main body 1 and the arc-shaped groove 601 are respectively provided with arc-shaped chamfers.

[0045] The working principle of the device is as follows: the mounting hole is arranged on the main body 1, the mounting surface 102 is aligned with the mounting groove on the mechanical part, the main body 1 is installed, the leakage-proof sheet 201 in the annular oil groove 202 is removed, and then the mounting surface of another mechanical part is aligned with the working surface 101 of the main body 1. When another mechanical part is installed, the two deformation angles 602 of the deformation part 6 are deformed when the mounting surface of another mechanical part is pressed against the working surface 101, and the arc-shaped surface of the arc-shaped groove 601 also starts to deform, thereby fitting the inner wall of the mounting groove of the mechanical part. The deformation angle 602 cooperates with the deformation of the arc-shaped groove 601 to increase the contact area of the main body 1 with the mounting groove and improve the sealing performance of the sealing gasket.

[0046] The oil storage cavity 501 which is pressed during installation can discharge the lubricating oil in the oil storage cavity 501 into the annular oil groove 202 through the through groove 203. In order to avoid the through groove 203 from being closed due to pressure, the through groove 203 is in an arc shape, which further improves the practicability of the device. Since the flange part 3 is arranged, the leakage of lubricating oil is avoided, the pollution is reduced, the sealing effect of the sealing gasket is improved, the friction of the working surface is reduced by arranging the annular oil groove 202, and the sealing gasket can also be cooled by arranging the lubricating oil in the annular oil groove 202. The above improvements can effectively prolong the service life of the sealing gasket.

[0047] When the mechanical equipment is running, the sealing gasket will be affected if there is a large vibration. The gas cavity 401 arranged on the sealing gasket can play a buffering role to reduce the size and frequency of the vibration, thereby protecting the sealing gasket from being damaged and prolonging the service life of the sealing gasket.

[0048] Example two

[0049] The second embodiment is a further improvement of the first embodiment. The oil storage cavity 501 is in a semi-ring shape, and three through-slots 203 are provided in the oil storage cavity 501 to communicate with the annular oil groove 202. The semi-ring shaped oil storage cavity 501 is used to improve the utilization rate of lubricating oil and avoid waste.

[0050] To avoid the lubricating oil in the oil storage cavity 501 from being used up, the semi-ring shape is provided. During use, the installation direction of the main body 1 can be determined according to the positions of the three through-slots 203, or an installation arrow can be marked on the main body 1. In this way, after installation, the lubricating oil in the oil groove 202 will also be evenly distributed in the annular oil groove under the influence of gravity.

[0051] In the traditional mechanical seal system, when the lubricating oil in the gasket is used up, the gasket needs to be disassembled and replaced. However, the mechanical seal rubber sealing gasket provided by the present application utilizes the characteristics of the oil storage cavity 501 and the annular oil groove 202, so that the lubricating oil can be effectively supplemented during the recycling process.

[0052] When the main body 1 is installed, the lubricating oil in the oil storage cavity 501 will be squeezed into the annular oil groove 202. In this way, during the use of the gasket, if it is found that the lubricating oil is insufficient, it only needs to supplement the lubricating oil in the oil storage cavity, so that the annular oil groove can be supplemented in time. In this way, the number of times of disassembling the gasket due to the use-up of lubricating oil can be greatly reduced, the maintenance efficiency is improved, and the maintenance cost is saved.

[0053] In summary, this design not only improves the operating efficiency of the mechanical seal system, but also prolongs the service life of the sealing gasket, improves the safety and reliability of the equipment.

[0054] The specific embodiments described herein are merely illustrative of the present application. Those skilled in the art of the present application can make various modifications or supplements to the described specific embodiments or use similar ways instead, without deviating from the spirit of the present application or exceeding the scope defined by the appended claims.

Claims

1. A rubber seal gasket for mechanical seal, comprising a main body (1), the main body (1) comprising a working surface (101) and a mounting surface (102), a mounting hole is formed on the main body (1), characterized in that: The protective assembly (2) is installed on the working surface (101) to reduce the friction on the working surface and prolong the service life of the sealing pad. The flange part (3) is installed on the working surface (101) to improve the sealing effect of the sealing pad, prevent lubricating oil leakage, and keep the lubricating oil clean. The sealing part (4) is installed on the inner wall of the mounting hole of the main body (1) to improve the damping effect of the sealing pad. The oil storage part (5) is installed on the outer edge of the main body (1) to store lubricating oil and reduce the disassembly frequency of the device. The deformation part (6) is provided on the mounting surface (102) to deform when the main body (1) of the sealing pad is subjected to pressure, thereby improving the sealing effect of the main body (1).

2. A rubber gasket for mechanical seals as claimed in claim 1, characterized in that: The protective assembly (2) includes a ring-shaped oil groove (202) provided on the working surface (101), and the ring-shaped oil groove (202) is used to store lubricating oil.

3. A rubber gasket for mechanical seals as claimed in claim 2, characterized in that: The ring-shaped oil groove (202) is provided with a detachable leakage-proof sheet (201) in interference fit, and the leakage-proof sheet (201) is detached after the main body is installed.

4. A rubber seal gasket for mechanical seals as claimed in claim 2 or 3, characterised in that: The oil storage part (5) is a ring-shaped structure integrally formed with the main body (1), and the oil storage part (5) is provided with a ring-shaped oil storage cavity (501) inside, and the oil storage cavity (501) is provided with at least three through grooves (203) penetrating the ring-shaped oil groove (202).

5. A rubber gasket for mechanical seals as claimed in claim 4, characterized in that: The through groove (203) is arc-shaped, which is used to resist the phenomenon that the inner wall of the through groove is closed due to the pressure on the working surface (101).

6. A rubber gasket for mechanical seals as claimed in claim 4, characterized in that: The oil storage cavity (501) is a semi-ring structure, and the oil storage cavity (501) is provided with three through grooves (203) penetrating the ring-shaped oil groove (202), and the semi-ring oil storage cavity (501) is used to improve the utilization rate of lubricating oil and avoid waste.

7. A rubber gasket for mechanical seals as defined in claim 1, characterized in that: The sealing part (4) is a ring-shaped structure integrally formed with the inner wall of the mounting groove provided on the main body (1), and the sealing part (4) is provided with an air cavity (401) inside, and the air cavity (401) stores gas to reduce the damage of mechanical vibration to the air cushion.

8. A rubber gasket for mechanical seals as defined in claim 2, characterized in that: The flange part (3) includes at least two ring-shaped protrusions, the ring-shaped protrusions are integrally formed with the main body (1), the ring-shaped oil groove (202) is provided between the two ring-shaped protrusions, the ring-shaped protrusions are in contact with the sealing part, and the ring-shaped protrusions are used to prevent lubricating oil in the ring-shaped oil groove (202) from leaking.

9. A rubber gasket for mechanical seals as defined in claim 1, characterized in that: The deformation part (6) includes an arc-shaped groove (601) provided on the mounting surface (102), and two deformation angles (602) provided between the arc-shaped groove (601) and the main body (1), and the connecting parts between the two deformation angles (602) and the main body (1) and the arc-shaped groove (601) are respectively provided with arc-shaped chamfers.

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