High-temperature-resistant mechanical seal shaft

Abstract

The utility model relates to the technical field of mechanical sealing, in particular to a high-temperature-resistant mechanical sealing shaft which comprises a rotating shaft, the outer surface of the rotating shaft is movably connected with a static ring, the inner surface of the static ring is fixedly connected with a temperature-resistant layer, the inner side face of the temperature-resistant layer is fixedly connected with a heat conduction ring, and the outer surface of the rotating shaft is movably connected with a movable ring. A clamping groove is formed in the side surface of the movable ring, the interior of the clamping groove is movably connected with the outer surface of the heat conduction ring, heat dissipation grooves are formed in the inner side face of the clamping groove, the upper ends of the heat dissipation grooves communicate with the outer surface of the movable ring, the number of the heat dissipation grooves is multiple, connecting grooves are formed in the inner bottom faces of the multiple heat dissipation grooves, and one end of each connecting groove communicates with the side surface of the movable ring. The mechanical sealing shaft can dissipate heat generated during use, avoid temperature accumulation of a sealing component, improve the high temperature resistance of the mechanical sealing shaft, prolong the service life of a mechanical seal, and facilitate the use of the mechanical sealing shaft.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical seal technical field especially relates to a high temperature resistant mechanical seal shaft. BACKGROUND

[0002] Mechanical seal, also known as face seal, is a kind of axial seal, is a kind of rotating machinery's shaft seal device, usually 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 sticking and relative sliding, the device that prevents fluid leakage is formed.

[0003] At present, in the prior art, the high temperature resistance of the mechanical seal shaft itself is not good, and friction occurs between the mechanical seal shaft and the sealing member during use, a large amount of heat is generated, the accumulation of the heat causes the mechanical seal shaft to accumulate high temperature, the service life of the mechanical seal is shortened, and the use of the mechanical seal shaft is seriously affected. UTILITY MODEL CONTENTS

[0004] The utility model discloses a kind of high temperature resistant mechanical seal shafts to solve the shortcomings in prior art.

[0005] To achieve the above object, the utility model adopts the following technical scheme: a kind of high temperature resistant mechanical seal shaft, including rotating shaft, the outer surface of the rotating shaft is movably connected with static ring, the inner surface of the static ring is fixedly connected with temperature resistance layer, the inner side of the temperature resistance layer is fixedly connected with heat conduction ring, the outer surface of the rotating shaft is movably connected with dynamic ring, the side surface of the dynamic ring is equipped with clamping groove, the inside of the clamping groove is movably connected with the outer surface of heat conduction ring, the inner side of the clamping groove is equipped with heat dissipation groove, the upper end of the heat dissipation groove is connected with the outer surface of dynamic ring, the quantity of the heat dissipation groove is multiple, the inner bottom of multiple heat dissipation grooves is equipped with connecting groove, one end of the connecting groove is connected with the side surface of dynamic ring.

[0006] As a further description of the above technical solution:

[0007] The upper surface of the static ring is equipped with first annular groove, the surface of the first annular groove is provided with sealing ring.

[0008] As a further description of the above technical solution:

[0009] The inner surface of the dynamic ring is equipped with second annular groove, the inner surface of the second annular groove is provided with sealing ring, the inner surface of the sealing ring is inlaid with the outer surface of rotating shaft.

[0010] As a further description of the above technical solution:

[0011] A spring is fixedly connected to the side surface of the moving ring, and the rotating shaft is located inside the spring.

[0012] As a further description of the above technical solution:

[0013] One end of the spring is fixedly connected to a support base, the inner surface of the support base is in contact with the outer surface of the rotating shaft, and a fixing groove is provided on the side surface of the support base.

[0014] As a further description of the above technical solution:

[0015] The outer surface of the rotating shaft is provided with a keyway, and a key block is provided inside the keyway, with the upper end of the key block located inside the fixed groove.

[0016] This utility model has the following beneficial effects:

[0017] Compared with existing technologies, this high-temperature resistant mechanical seal shaft, through a rotating shaft, stationary ring, heat-resistant layer, heat-conducting ring, rotating ring, retaining groove, heat dissipation groove, and connecting groove, operates as follows: During use, the rotating shaft rotates, causing the rotating ring to rotate. This friction between the rotating ring and the rotating shaft and the heat-resistant layer within the stationary ring generates heat. This heat is guided through the heat-resistant layer and into the retaining groove by the heat-conducting ring. Simultaneously, during the rotation of the rotating ring, the air pressure inside the heat dissipation groove becomes uneven with the external air pressure, causing air to be drawn out of the heat dissipation groove, i.e., hot air is drawn out of the retaining groove. At this point, the air pressure at the connection between the heat dissipation groove and the retaining groove is lower, allowing external air to enter the retaining groove through the connecting groove, thus allowing the air to circulate within the groove. The grooves, slots, and heat dissipation grooves create a flow, dissipating heat from the heat-conducting ring and thus improving the high-temperature resistance of the shaft. Compared to existing technologies, where the mechanical seal shaft itself has poor high-temperature resistance and generates a large amount of heat through friction with the sealing components during use, this high-temperature resistant mechanical seal shaft can dissipate the heat generated during use, preventing the sealing components from accumulating heat, improving the high-temperature resistance of the mechanical seal shaft, extending its service life, and facilitating its use. Attached Figure Description

[0018] Figure 1 This is a first-view overall structural schematic diagram of a high-temperature resistant mechanical seal shaft proposed in this utility model;

[0019] Figure 2 This is a second-view schematic diagram of the overall structure of a high-temperature resistant mechanical seal shaft proposed in this utility model.

[0020] Figure 3 This is a half-sectional view of the internal perspective of a high-temperature resistant mechanical seal shaft proposed in this utility model.

[0021] Figure 4 This invention proposes a high-temperature resistant mechanical seal shaft. Figure 3 Schematic diagram of the structure at point A in the middle;

[0022] Figure 5 This invention proposes a high-temperature resistant mechanical seal shaft. Figure 3 Schematic diagram of the structure at point B.

[0023] Legend:

[0024] 1. Rotating shaft; 2. Stationary ring; 3. Temperature-resistant layer; 4. Heat-conducting ring; 5. Moving ring; 6. Slot; 7. Heat dissipation slot; 8. Connecting slot; 9. First annular slot; 10. Sealing ring; 11. Second annular slot; 12. Sealing ring; 13. Spring; 14. Support base; 15. Fixing slot; 16. Keyway; 17. Key block. Detailed Implementation

[0025] Reference Figures 1-5This utility model provides a high-temperature resistant mechanical seal shaft, comprising a rotating shaft 1, a stationary ring 2 movably connected to the outer surface of the rotating shaft 1, and a heat-resistant layer 3 fixedly connected to the inner surface of the stationary ring 2. During use, friction occurs between the side surface of the rotating shaft 1 and the side surface of the heat-resistant layer 3, and between the outer surface of the rotating ring 5 and the inner surface of the heat-resistant layer 3. The heat-resistant layer 3 withstands higher temperatures and is guided by a heat-conducting ring 4 to dissipate heat, preventing high-temperature damage to the mechanical seal shaft and improving its high-temperature resistance. The heat-resistant layer 3 is made of silicon carbide, possessing excellent high-temperature resistance, and can better withstand the high temperatures generated by friction during use. The inner surface of the heat-resistant layer 3 is fixedly connected to… A heat-conducting ring 4 is connected. When the heat-resistant layer 3 rubs against the surfaces of the moving ring 5 and the rotating shaft 1, the heat-conducting ring 4 can guide the heat generated. When the heat of the heat-conducting ring 4 is carried away by the air passing through the slot 6, a temperature difference is formed between the heat-conducting ring 4, the heat-resistant layer 3, and the rotating shaft 1. This allows the heat generated by friction to be continuously transferred to the heat-conducting ring 4 and dissipated, thus enabling the rotating shaft 1 to rotate stably under the high temperature generated by friction and improving the high temperature resistance of the rotating shaft 1. The moving ring 5 is movably connected to the outer surface of the rotating shaft 1. The side surface of the moving ring 5 has a slot 6. The inside of the slot 6 is movably connected to the outer surface of the heat-conducting ring 4. The inner side of the slot 6 is open. A heat dissipation groove 7 is provided, which is L-shaped. The upper end of the heat dissipation groove 7 is connected to the outer surface of the moving ring 5. There are multiple heat dissipation grooves 7, and each of the inner bottom surfaces of the multiple heat dissipation grooves 7 has a connecting groove 8, which is horizontally L-shaped. One end of the connecting groove 8 is connected to the side surface of the moving ring 5. The connecting groove 8, the retaining groove 6 and the heat dissipation groove 7 are connected. When the moving ring 5 rotates, the outside air passes through the connecting groove 8, the retaining groove 6 and the heat dissipation groove 7 in sequence. When the air passes through the retaining groove 6, it carries away the heat guided by the heat conducting ring 4, thereby forming a heat dissipation effect. In use, the rotating shaft 1 rotates, which drives the moving ring 5 to rotate, so that the moving ring 5 and the rotating shaft 1 are separated. Friction between the rotating shaft 1 and the heat-resistant layer 3 inside the stationary ring 2 causes heat to be generated at the friction points between the rotating shaft 1 and the rotating ring 5 and the heat-resistant layer 3. The heat is guided into the slot 6 by the heat-conducting ring 4 through the heat-resistant layer 3. At the same time, during the rotation of the rotating ring 5, the air pressure inside the heat dissipation groove 7 is uneven with the external air pressure, causing the air inside the heat dissipation groove 7 to be drawn out, that is, the hot air inside the slot 6 is drawn out. At this time, the air pressure at the connection between the heat dissipation groove 7 and the slot 6 is relatively small, so the external air enters the slot 6 through the connecting groove 8, thereby creating air circulation between the connecting groove 8, the slot 6 and the heat dissipation groove 7, dissipating heat from the heat-conducting ring 4, thereby improving the high temperature resistance of the rotating shaft 1.

[0026] The upper surface of the stationary ring 2 has a first annular groove 9, and a sealing ring 10 is provided on the surface of the first annular groove 9. The inner surface of the rotating ring 5 has a second annular groove 11, and a sealing ring 12 is provided on the inner surface of the second annular groove 11. The inner surface of the sealing ring 12 is in contact with the outer surface of the rotating shaft 1. A spring 13 is fixedly connected to the side surface of the rotating ring 5. The rotating shaft 1 is located inside the spring 13. One end of the spring 13 is fixedly connected to a support 14. The inner surface of the support 14 is in contact with the outer surface of the rotating shaft 1. A fixing groove 15 is provided on the side surface of the support 14. A keyway 16 is provided on the outer surface of the rotating shaft 1. The inside of the keyway 16... A key block 17 is provided, with its upper end located inside the fixing groove 15. First, the stationary ring 2 is installed on the rotating shaft 1. Then, the moving ring 5, the spring 13, and the support base 14 are installed, so that the slot 6 corresponds to and is inserted into the heat-conducting ring 4. Pressure is applied to the support base 14, causing it to move towards the moving ring 5, fully exposing the keyway 16. Then, the key block 17 is placed in the keyway 16. Then, the fixing groove 15 on the support base 14 corresponds to the key block 17 and is released. Under the force of the spring 13, the support base 14 moves towards the key block 17, causing the key block 17 to be inserted into the fixing groove 15, thereby installing the support base 14.

[0027] Working principle: During use, the rotating shaft 1 rotates, driving the rotating ring 5 to rotate. This causes the rotating ring 5 and the rotating shaft 1 to rub against the heat-resistant layer 3 inside the stationary ring 2. Heat is generated at the friction points between the rotating shaft 1, the rotating ring 5, and the heat-resistant layer 3. The heat is guided into the slot 6 by the heat-conducting ring 4 through the heat-resistant layer 3. At the same time, during the rotation of the rotating ring 5, the air pressure inside the heat dissipation groove 7 is uneven with the external air pressure, causing the air inside the heat dissipation groove 7 to be drawn out, i.e., the hot air inside the slot 6 is drawn out. At this time, the air pressure at the connection between the heat dissipation groove 7 and the slot 6 is lower, so the external air enters the slot 6 through the connecting groove 8, thus creating air circulation between the connecting groove 8, the slot 6, and the heat dissipation groove 7, dissipating heat from the heat-conducting ring 4, thereby improving the high-temperature resistance of the rotating shaft 1.

[0028] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-temperature resistant mechanical seal shaft, comprising a rotating shaft (1), characterized in that: A stationary ring (2) is movably connected to the outer surface of the rotating shaft (1). A heat-resistant layer (3) is fixedly connected to the inner surface of the stationary ring (2). A heat-conducting ring (4) is fixedly connected to the inner side of the heat-resistant layer (3). A moving ring (5) is movably connected to the outer surface of the rotating shaft (1). A slot (6) is provided on the side surface of the moving ring (5). The inside of the slot (6) is movably connected to the outer surface of the heat-conducting ring (4). A heat dissipation groove (7) is provided on the inner side of the slot (6). The upper end of the heat dissipation groove (7) is connected to the outer surface of the moving ring (5). There are multiple heat dissipation grooves (7). A connecting groove (8) is provided on the inner bottom surface of each of the multiple heat dissipation grooves (7). One end of the connecting groove (8) is connected to the side surface of the moving ring (5).

2. The high-temperature resistant mechanical seal shaft according to claim 1, characterized in that: The upper surface of the stationary ring (2) is provided with a first annular groove (9), and a sealing ring (10) is provided on the surface of the first annular groove (9).

3. The high-temperature resistant mechanical seal shaft according to claim 1, characterized in that: The inner surface of the moving ring (5) is provided with a second annular groove (11), and the inner surface of the second annular groove (11) is provided with a sealing ring (12), and the inner surface of the sealing ring (12) is in contact with the outer surface of the rotating shaft (1).

4. The high-temperature resistant mechanical seal shaft according to claim 1, characterized in that: A spring (13) is fixedly connected to the side surface of the moving ring (5), and the rotating shaft (1) is located inside the spring (13).

5. A high-temperature resistant mechanical seal shaft according to claim 4, characterized in that: One end of the spring (13) is fixedly connected to a support base (14), the inner surface of the support base (14) is in contact with the outer surface of the rotating shaft (1), and a fixing groove (15) is provided on the side surface of the support base (14).

6. A high-temperature resistant mechanical seal shaft according to claim 1, characterized in that: The outer surface of the rotating shaft (1) is provided with a keyway (16), and a key block (17) is provided inside the keyway (16), with the upper end of the key block (17) located inside the fixing groove (15).

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