Packaging graphite sealing assembly

Abstract

The utility model discloses a packaging graphite sealing assembly which comprises a stainless steel sealing seat body provided with a mounting groove, and the mounting groove is used for receiving a graphite sealing ring, an O-shaped rubber sealing ring, a stainless steel push ring and a stainless steel wave spring. The six fixed stainless steel positioning pins are uniformly distributed around the mounting groove; the graphite sealing ring is arranged on the stainless steel push ring, and a stainless steel positioning groove on the outer circle of the graphite sealing ring is embedded in the stainless steel positioning pin; the O-shaped rubber sealing ring is arranged in the mounting groove; the stainless steel push ring is arranged on the stainless steel wave spring; the stainless steel wave spring is arranged at the bottom of the mounting groove; and an upper opening of the stainless steel sealing seat is heated and bent to fix an excircle step of the stainless steel sealing ring to form a closed graphite sealing assembly. In this way, the whole graphite sealing ring assembly forms a closed space, leakage caused by looseness is avoided, and the sealing effect is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of graphite sealing assemblies, in particular to a packaged graphite sealing assembly. Background Art

[0002] Features of the seal assembly: small size, good sealing effect, high pressure resistance, easy installation. It is a labyrinth seal with a supply compensation device. It is placed in the ring groove of the equipment and fixed in the ring groove. The seal relies on the elasticity of the wave spring in the seal assembly to press against the seal ring and fit closely with the moving ring to play a sealing role. The contact surface of the graphite seal ring needs to be ground and polished. The seal assembly is a sealing device that forms a seal with the moving ring and is the most important component of the mechanical seal. The various parts of the seal assembly are required to complement each other and have sufficient strength, rigidity and corrosion resistance. Therefore, some higher requirements are put forward for it: the seal ring determines the performance and life of the mechanical seal to a large extent, and has sufficient strength and corrosion resistance. It should not be damaged under working conditions (such as pressure, temperature and sliding speed, etc.), the deformation should be as small as possible, and the sealing can still be maintained when the working conditions fluctuate. The sealing end face should have sufficient strength and corrosion resistance to ensure a satisfactory service life under various working conditions. The seal ring should have good thermal shock resistance. To this end, the material is required to have a high thermal conductivity and a small linear expansion coefficient, so that it will not crack when subjected to thermal shock. The sealing ring should have a small friction coefficient and excellent self-lubrication, and the sealing ring material should have good wettability with the bee fluid. The stainless steel sealing seat and stainless steel push ring must have good strength and corrosion resistance. The stainless steel wave spring must have excellent strength and corrosion resistance, and have good rigidity (recovery) to keep the stainless steel wave spring lasting and stable thrust. The O-type rubber sealing ring has good corrosion resistance and toughness.

[0003] Currently, there is a lack of an encapsulated graphite seal assembly. Utility Model Content

[0004] The purpose of the utility model is to provide a packaged graphite sealing assembly to solve the problem that the existing graphite sealing assembly is composed of multiple segments, each segment cooperates with each other, and the tightness of the cooperation directly affects the sealing effect, thereby reducing the sealing effect and service life.

[0005] In order to solve the problems of the prior art, the technical solution adopted by the utility model is as follows: the utility model is a packaged graphite seal assembly, the packaged graphite seal assembly includes

[0006] A stainless steel seal seat body having a mounting groove for receiving a graphite seal ring, an O-ring rubber seal, a stainless steel push ring and a stainless steel wave spring;

[0007] Six fixed stainless steel locating pins, evenly distributed around the mounting groove, are used to limit the axial movement of the graphite sealing ring;

[0008] The graphite sealing ring is arranged on the stainless steel push ring, and the stainless steel positioning groove on the outer circle of the graphite sealing ring is embedded in the stainless steel positioning pin;

[0009] An O-type rubber sealing ring is arranged in the mounting groove to form a labyrinth sealing structure to prevent fluid leakage;

[0010] A stainless steel push ring, which is set on the stainless steel wave spring, is used to evenly distribute the thrust to the graphite sealing ring;

[0011] Stainless steel wave spring, set at the bottom of the mounting groove, is used to provide uniform thrust to compensate for the wear of the graphite sealing ring;

[0012] The upper opening of the stainless steel sealing seat is heated and bent to fix the outer circular step of the stainless steel sealing ring to form a closed graphite sealing assembly.

[0013] Furthermore, the mounting groove of the stainless steel sealing seat has at least one L-shaped edge for fixing and supporting the graphite sealing ring, the O-type rubber sealing ring, the stainless steel push ring and the stainless steel wave spring.

[0014] Furthermore, a positioning groove is provided on the outer circle of the graphite sealing ring, and the positioning groove is designed to receive a stainless steel positioning pin to ensure the correct positioning of the graphite sealing ring in the installation groove.

[0015] Furthermore, there is a tight mechanical connection between the stainless steel wave spring and the stainless steel push ring to ensure uniform transmission of the thrust to the graphite sealing ring.

[0016] Furthermore, the O-type rubber sealing ring is tightly fitted to the inner wall of the groove of the stainless steel sealing seat to enhance the effect of the labyrinth seal.

[0017] Beneficial effects: The graphite seal assembly of the utility model improves sealing performance, prolongs service life, simplifies installation process, and has strong corrosion resistance and high pressure resistance.

[0018] Compared with the prior art, the utility model has the following advantages: (1) The utility model enhances the sealing performance: by closely matching and embedding the components such as the graphite sealing ring, stainless steel wave spring, stainless steel push ring and O-type rubber sealing ring in the stainless steel sealing seat, a closed space is formed, which effectively avoids leakage caused by looseness, thereby significantly enhancing the sealing effect. Compact structure: The graphite sealing assembly of the utility model is compactly designed, and the matching between the various components is precise, which not only reduces the space occupation, but also improves the overall structural strength and rigidity.

[0019] (2) Improve service life: The close fit between the graphite sealing ring and the dynamic ring, as well as the uniform and constant thrust provided by the stainless steel wave spring and push ring, ensure that the sealing surface can maintain a good sealing state under various working conditions, reduce wear, and thus extend the service life of the sealing assembly. High pressure resistance: The design of the sealing assembly can withstand high pressure and is suitable for sealing requirements under high pressure environments, ensuring the safety and reliability of the equipment under high pressure working conditions.

[0020] (3) Easy installation: The design of the graphite seal assembly makes the installation process easier, and it is easy to fix in the ring groove of the equipment, in close contact with the dynamic ring, forming a labyrinth seal, which improves the installation efficiency. Strong corrosion resistance: The use of stainless steel materials and the grinding and polishing of the graphite sealing ring make the seal assembly have good corrosion resistance and can maintain stable sealing performance in various chemical environments.

[0021] (4) Good thermal stability: The high thermal conductivity and low linear expansion coefficient of graphite materials make the sealing ring have good thermal shock resistance and can maintain stable sealing performance under temperature changes. Self-lubrication: The self-lubricating property of graphite materials reduces the friction coefficient and energy consumption, while improving the wear resistance of the sealing ring and reducing maintenance costs. Strong adaptability: The graphite sealing assembly of the utility model is suitable for a variety of working environments, including high temperature, high pressure, chemical corrosion and other harsh conditions, and has strong adaptability and broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the embodiments are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0023] Figure 1 It is an exploded schematic diagram of the graphite sealing ring, O-type rubber sealing ring, stainless steel push ring, stainless steel wave spring, stainless steel sealing seat and stainless steel positioning pin of the utility model;

[0024] Figure 2 It is a cross-sectional view of the graphite seal assembly of the utility model;

[0025] Figure 3 It is a general schematic diagram of the graphite seal assembly of the utility model;

[0026] Among them, 1. Graphite sealing ring; 2. O-type rubber sealing ring; 3. Stainless steel push ring; 4. Stainless steel wave spring; 5. Stainless steel sealing seat; 6. Stainless steel locating pin, 7 installation groove. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0028] The first aspect of the utility model provides a packaged graphite seal assembly, the packaged graphite seal assembly comprising

[0029] The stainless steel sealing seat body has a mounting groove 7, and the mounting groove 7 is used to receive the graphite sealing ring 1, the O-type rubber sealing ring 2, the stainless steel push ring 3 and the stainless steel wave spring 4;

[0030] Six fixed stainless steel locating pins 6 are evenly distributed around the installation groove 7 to limit the axial movement of the graphite sealing ring 1; the stainless steel locating pins 6 of the utility model are arranged on the outer arc of the groove of the stainless steel sealing seat 5 (divided into six equal parts), forming a compact, high-strength, corrosion-resistant stainless steel sealing seat body.

[0031] The graphite sealing ring 1 is arranged on the stainless steel push ring 3, and the outer stainless steel positioning groove of the graphite sealing ring 1 is embedded in the stainless steel positioning pin 6;

[0032] An O-type rubber sealing ring 2 is arranged in the mounting groove 7 to form a labyrinth sealing structure to prevent fluid leakage;

[0033] The stainless steel push ring 3 is arranged on the stainless steel wave spring 4 and is used to evenly distribute the thrust to the graphite sealing ring 1;

[0034] A stainless steel wave spring 4 is arranged at the bottom of the mounting groove 7 and is used to provide a uniform thrust to compensate for the wear of the graphite sealing ring 1;

[0035] The upper opening of the stainless steel sealing seat 5 is heated and bent to fix the outer circular step of the stainless steel sealing ring 3 to form a closed graphite sealing assembly.

[0036] The mounting groove 7 of the stainless steel sealing seat has at least one L-shaped edge for fixing and supporting the graphite sealing ring 1 , the O-type rubber sealing ring 2 , the stainless steel push ring 3 and the stainless steel wave spring 4 .

[0037] The outer circle of the graphite sealing ring 1 is provided with a positioning groove, which is designed to receive a stainless steel positioning pin (6) to ensure that the graphite sealing ring 1 is correctly positioned in the installation groove 7.

[0038] There is a tight mechanical connection between the stainless steel wave spring 4 and the stainless steel push ring 3 to ensure that the thrust is evenly transmitted to the graphite sealing ring 1 .

[0039] The O-type rubber sealing ring 2 is tightly fitted to the inner wall of the groove of the stainless steel sealing seat to enhance the effect of the labyrinth seal.

[0040] The replenishment and compensation device of the utility model comprises a stainless steel push ring 3 and a stainless steel wave spring 4. The stainless steel wave spring 4 is arranged at the bottom of the groove of the stainless steel sealing seat body, and the stainless steel push ring 3 is arranged on the stainless steel wave spring 4, forming a replenishment and compensation device with compact structure, durability, uniformity, high rigidity and corrosion resistance.

[0041] The graphite sealing device comprises an O-type rubber sealing ring 2 and a graphite sealing ring 1. The inner circle lower side step of the graphite sealing ring 1 is arranged in the inner side wall of the groove of the stainless steel sealing seat body. The graphite sealing ring 1 is arranged on the stainless steel push ring 3, and the outer circle positioning groove of the graphite sealing ring 1 is embedded in the stainless steel positioning pin 6 of the stainless steel sealing seat body, forming a graphite rubber combined sealing device with compact structure, high strength, impact resistance, wear resistance and corrosion resistance.

[0042] The processing of the stainless steel sealing seat 5 includes laser welding the stainless steel positioning pin 6 to the outer arc of the mounting groove 7 to form a six-part fixed structure.

[0043] When in use, first fix the graphite sealing assembly in the ring groove of the equipment, in close contact with the moving ring. The O-type rubber sealing ring 2 forms a labyrinth seal in the graphite sealing assembly, so that the inside and outside of the graphite sealing assembly form an isolated environment. The stainless steel push ring 3 and stainless steel wave spring 4 in the graphite sealing assembly provide uniform and constant thrust and compensation to avoid leakage due to looseness at the contact point and enhance the sealing effect.

[0044] Example 1

[0045] like Figures 1 to 3 As shown, the utility model is a packaged graphite seal assembly, the packaged graphite seal assembly includes

[0046] The stainless steel sealing seat body has a mounting groove 7, and the mounting groove 7 is used to receive the graphite sealing ring 1, the O-type rubber sealing ring 2, the stainless steel push ring 3 and the stainless steel wave spring 4;

[0047] Six fixed stainless steel locating pins 6 are evenly distributed around the installation groove 7 to limit the axial movement of the graphite sealing ring 1; the stainless steel locating pins 6 of the utility model are arranged on the outer arc of the groove of the stainless steel sealing seat 5 (divided into six equal parts), forming a compact, high-strength, corrosion-resistant stainless steel sealing seat body.

[0048] The graphite sealing ring 1 is arranged on the stainless steel push ring 3, and the outer stainless steel positioning groove of the graphite sealing ring 1 is embedded in the stainless steel positioning pin 6;

[0049] An O-type rubber sealing ring 2 is arranged in the mounting groove 7 to form a labyrinth sealing structure to prevent fluid leakage;

[0050] The stainless steel push ring 3 is arranged on the stainless steel wave spring 4 and is used to evenly distribute the thrust to the graphite sealing ring 1;

[0051] A stainless steel wave spring 4 is arranged at the bottom of the mounting groove 7 and is used to provide a uniform thrust to compensate for the wear of the graphite sealing ring 1;

[0052] The upper opening of the stainless steel sealing seat 5 is heated and bent to fix the outer circular step of the stainless steel sealing ring 3 to form a closed graphite sealing assembly.

[0053] The mounting groove 7 of the stainless steel sealing seat has at least one L-shaped edge for fixing and supporting the graphite sealing ring 1 , the O-type rubber sealing ring 2 , the stainless steel push ring 3 and the stainless steel wave spring 4 .

[0054] The outer circle of the graphite sealing ring 1 is provided with a positioning groove, which is designed to receive a stainless steel positioning pin 6 to ensure that the graphite sealing ring 1 is correctly positioned in the installation groove 7 .

[0055] There is a tight mechanical connection between the stainless steel wave spring 4 and the stainless steel push ring 3 to ensure that the thrust is evenly transmitted to the graphite sealing ring 1 .

[0056] The O-type rubber sealing ring 2 is tightly fitted to the inner wall of the groove of the stainless steel sealing seat to enhance the effect of the labyrinth seal.

[0057] Example 2

[0058] The utility model discloses an encapsulated graphite sealing assembly, wherein a stainless steel locating pin 6 is arranged on an outer circular arc (divided into six equal parts) of a groove of a stainless steel sealing seat 5 to form a stainless steel sealing seat body, a stainless steel wave spring 4 is arranged at the bottom of the groove of the stainless steel sealing seat body, a stainless steel push ring 3 is arranged on the stainless steel wave spring 4, an O-type rubber sealing ring 2 is arranged in a lower step of an inner circle of a graphite sealing ring 1 and on an inner side wall of the groove of the stainless steel sealing seat body, the graphite sealing ring 1 is arranged on the stainless steel push ring 3, and an outer circle locating groove of the graphite sealing ring 1 is embedded in the stainless steel locating pin 6 of the stainless steel sealing seat body, and an upper opening of the stainless steel sealing seat body is heated and bent and arranged on an outer circle step of the graphite sealing ring 1, so as to form an encapsulated graphite sealing assembly with a labyrinth seal in a graphite sealing assembly, which is compact and tight in structure, firmly combined, high in strength, impact-resistant, wear-resistant and corrosion-resistant.

[0059] The replenishment and compensation device is a stainless steel push ring 3 and a stainless steel wave spring 4. The stainless steel wave spring 4 is arranged at the bottom of the groove of the stainless steel sealing seat body, and the stainless steel push ring 3 is arranged on the stainless steel wave spring 4, forming a compact, durable, uniform, high-rigidity, and corrosion-resistant replenishment and compensation device.

[0060] The graphite sealing device comprises an O-type rubber sealing ring 2 and a graphite sealing ring 1. The inner circle lower side step of the graphite sealing ring 1 is arranged in the inner side wall of the groove of the stainless steel sealing seat body. The graphite sealing ring 1 is arranged on the stainless steel push ring 3, and the outer circle positioning groove of the graphite sealing ring 1 is embedded in the stainless steel positioning pin 6 of the stainless steel sealing seat body, forming a graphite rubber combined sealing device with compact structure, high strength, impact resistance, wear resistance and corrosion resistance.

[0061] During the processing of the graphite sealing ring 1, the cutting speed is 400-450m / min and the feed rate is 0.05-0.10mm / r. Since graphite is a brittle material and hard, it is particularly easy to slag during processing, and it is particularly difficult to ensure the sharp edge on the sealing surface. In order to process qualified parts under the existing conditions, the cutting tool and cutting parameters are tested and improved. The cutting speed is 400-450m / min and the feed rate is 0.05-0.10mm / r as the best processing parameters.

[0062] The processing of the stainless steel sealing seat 5 includes laser welding the stainless steel positioning pin 6 to the outer arc of the mounting groove 7 to form a six-part fixed structure.

[0063] When in use, first fix the graphite sealing assembly in the ring groove of the equipment, in close contact with the moving ring. The O-type rubber sealing ring 2 forms a labyrinth seal in the graphite sealing assembly, so that the inside and outside of the graphite sealing assembly form an isolated environment. The stainless steel push ring 3 and stainless steel wave spring 4 in the graphite sealing assembly provide uniform and constant thrust and compensation to avoid leakage due to looseness at the contact point and enhance the sealing effect.

[0064] The encapsulated graphite seal assembly of the utility model has enhanced sealing performance: by closely matching and embedding components such as the graphite sealing ring, the stainless steel wave spring, the stainless steel push ring and the O-type rubber sealing ring in the stainless steel sealing seat, a closed space is formed, which effectively avoids leakage caused by looseness, thereby significantly enhancing the sealing effect.

[0065] Compact structure: The graphite seal assembly of the utility model is compactly designed, and the various components are precisely matched. Compared with the traditional carbon sealing rings installed separately, it not only reduces the space occupation, but also improves the overall structural strength and rigidity.

[0066] Improve service life: The close fit between the graphite sealing ring and the dynamic ring, as well as the uniform and constant thrust provided by the stainless steel wave spring and the push ring, ensure that the sealing surface can maintain a good sealing state under various working conditions, reduce wear, and thus extend the service life of the sealing assembly. The original separately installed graphite sealing ring of the utility model has a service life of about 8400 hours at a speed of 5000r / min, and the utility model has been running stably for 13000 hours since its installation, and is still running as of the declaration, and the sealing leakage is still within the design range.

[0067] High pressure resistance: The integrated design of the sealing assembly can withstand high pressure and is suitable for sealing requirements under high pressure environments, ensuring the safety and reliability of the equipment under high pressure working conditions.

[0068] Easy installation: The design of the graphite seal assembly makes the installation process easier. It is easy to fix in the ring groove of the equipment and keep in close contact with the moving ring. There is no need to install the graphite sealing rings separately. A labyrinth seal is formed inside the assembly, which improves the installation efficiency.

[0069] Strong corrosion resistance: The use of stainless steel materials and the grinding and polishing of the graphite sealing ring make the sealing assembly have good corrosion resistance and can maintain stable sealing performance in various chemical environments.

[0070] Good thermal stability: The high thermal conductivity and low linear expansion coefficient of graphite material make the sealing ring have good thermal shock resistance and can maintain stable sealing performance under temperature changes.

[0071] Self-lubrication: The self-lubricating property of graphite material reduces the friction coefficient, reduces energy consumption, and at the same time improves the wear resistance of the sealing ring and reduces maintenance costs.

[0072] Strong adaptability: The graphite sealing assembly of the utility model is suitable for a variety of working environments, including high temperature, high pressure, chemical corrosion and other harsh conditions. The original sub-packaged graphite sealing ring of the utility model has a service life of about 8400 hours at a speed of 5000r / min. The utility model has been running stably for 13,000 hours since its installation, and is still running as of the time of declaration. The sealing leakage is still within the design range, with strong adaptability and broad application prospects.

[0073] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and the scope of protection required by the utility model is defined by the attached claims, description and their equivalents.

Claims

1. A packaged graphite seal assembly, characterized in that: The encapsulated graphite seal assembly comprises The stainless steel sealing seat body has a mounting groove (7), wherein the mounting groove is used to receive the graphite sealing ring (1), the O-type rubber sealing ring (2), the stainless steel push ring (3) and the stainless steel wave spring (4); Six fixed stainless steel locating pins (6) evenly distributed around the mounting groove (7) for limiting the axial movement of the graphite sealing ring (1); A graphite sealing ring (1) is arranged on the stainless steel push ring (3), and the outer stainless steel positioning groove of the graphite sealing ring (1) is embedded in the stainless steel positioning pin (6); An O-type rubber sealing ring (2) is arranged in the mounting groove (7) to form a labyrinth sealing structure to prevent fluid leakage; A stainless steel push ring (3) is disposed on the stainless steel wave spring (4) and is used to evenly distribute the thrust to the graphite sealing ring (1); a stainless steel wave spring (4) disposed at the bottom of the mounting groove (7) for providing a uniform thrust to compensate for the wear of the graphite sealing ring (1); and The upper opening of the stainless steel sealing seat (5) is heated and bent to fix the outer circular step of the graphite sealing ring (1) to form a closed graphite sealing assembly.

2. The encapsulated graphite seal assembly according to claim 1, characterized in that: The mounting groove (7) of the stainless steel sealing seat has at least one L-shaped edge for fixing and supporting the graphite sealing ring (1), the O-type rubber sealing ring (2), the stainless steel push ring (3) and the stainless steel wave spring (4).

3. The encapsulated graphite seal assembly according to claim 1, characterized in that: The outer circumference of the graphite sealing ring (1) is provided with a positioning groove, and the positioning groove is designed to receive a stainless steel positioning pin (6) to ensure that the graphite sealing ring (1) is correctly positioned in the installation groove (7).

4. The encapsulated graphite seal assembly according to claim 1, characterized in that: There is a tight mechanical connection between the stainless steel wave spring (4) and the stainless steel push ring (3) to ensure that the thrust is evenly transmitted to the graphite sealing ring (1).

5. The encapsulated graphite seal assembly according to claim 1, characterized in that: The O-type rubber sealing ring (2) is tightly fitted to the inner wall of the groove of the stainless steel sealing seat.

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