Air leakage prevention fan rotor journal

Abstract

The utility model relates to the technical field of fan rotors, in particular to an anti-air-leakage fan rotor shaft neck which comprises a labyrinth outer sleeve, a shaft sleeve, a shaft sleeve and a shaft sleeve, the journal sticking maze is rotationally arranged on the inner side wall of the maze outer sleeve, and the inner side wall of the journal sticking maze is connected with the outer surface of a fan shaft on the branch fan equipment; an air leakage channel is formed between the inner side wall of the labyrinth outer sleeve and the outer side wall of the journal sticking labyrinth; the sealing piece is used for blocking airflow from passing through the air leakage channel, the shaft sticking labyrinth is connected to the outer portion of the fan shaft, the labyrinth outer sleeve is arranged outside the shaft sticking labyrinth, and then the airflow flowing in the air leakage channel is blocked in the air leakage channel through the sealing piece. The air flow flowing between the fan equipment and the fan shaft is blocked in the fan equipment, so that the air leakage condition at the joint of the fan equipment and the fan shaft is avoided, and the air conveying efficiency and the use effect of the fan are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of fan rotors, in particular to an air leakage-proof fan rotor journal. Background Art

[0002] High-temperature fans are often used in high-temperature production. In the fan equipment system, the fan shaft is one of its core components. Its main functions include transmitting power, supporting rotating mass and connecting various components. The fan shaft is generally made of high-temperature resistant materials to ensure its durability during use.

[0003] However, after the fan shaft is connected to the fan, and during use, a certain gap will inevitably appear at the rotating connection between the fan shaft and the fan equipment, and the gap will cause the airflow around the fan shaft to flow through the gap. The flow of air means that part of the gas that should have been transported is lost without being worked, which directly affects the gas transmission efficiency of the fan and may also cause an imbalance in the airflow pressure of the entire equipment system, affecting the use of the fan and the fan shaft, and causing trouble to the use of the equipment.

[0004] Based on the above situation, it is necessary to design a fan rotor journal that prevents air leakage to solve the above problem. Utility Model Content

[0005] The utility model provides an air leakage-proof fan rotor journal, which solves the problem of air leakage at the rotation connection between the fan shaft and the fan equipment in the prior art.

[0006] The technical problem solved by the present invention is achieved by the following technical solutions:

[0007] A fan rotor journal that prevents air leakage includes: a labyrinth jacket, one end of which is connected to the fan equipment through a connector; a shaft-holding labyrinth that rotates on the inner wall of the labyrinth jacket, the inner wall of the shaft-holding labyrinth being connected to the outer surface of the fan shaft on the fan equipment; an air leakage channel formed between the inner wall of the labyrinth jacket and the outer wall of the shaft-holding labyrinth, one end of the air leakage channel facing the fan equipment; a seal, which is arranged at the other end of the air leakage channel and is used to block airflow from passing through the air leakage channel.

[0008] Preferably, the seal includes a U-shaped oil seal cover and an elastic ring 1, the oil seal cover is provided with a clamping portion and a rotating contact portion that contacts the outer side wall of the shaft-holding labyrinth, the elastic ring 1 is connected to the rotating contact portion, the clamping portion and the elastic ring 1 are respectively in contact with the outer side wall and the inner side wall of one end of the labyrinth jacket, and the position of the elastic ring 1 corresponds to the end of the air leakage channel away from the fan equipment.

[0009] Preferably, a groove one is provided on the outer side wall of one end of the shaft-holding labyrinth, an elastic ring two is provided in the groove one, and the rotating contact part is movably engaged in the groove one and contacts the outer surface of the elastic ring two.

[0010] Preferably, a coil spring is sleeved on the inner side of the rotating contact portion.

[0011] Preferably, an annular protrusion is provided on the inner side wall of the labyrinth jacket, and an annular groove corresponding to the position of the annular protrusion is provided on the outer side wall of the axis-embracing labyrinth.

[0012] Preferably, the connecting member includes flange 1 and flange 2, flange 1 is connected to the fan equipment by welding, flange 2 is connected to flange 1 by bolts, and flange 2 is fixedly connected to one end of the labyrinth jacket close to the fan equipment.

[0013] The beneficial effect of the utility model is that: by connecting the shaft-holding labyrinth to the outside of the fan shaft and arranging a labyrinth jacket outside the shaft-holding labyrinth, and then using a seal to block the airflow flowing in the air leakage channel within the air leakage channel, the airflow flowing between the fan equipment and the fan shaft is blocked within the fan equipment, and air leakage will no longer occur at the connection between the two, thereby ensuring the gas transmission efficiency and use effect of the fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the implementation scheme of the present invention or the technical scheme in the prior art, the drawings required for use in the implementation scheme or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some implementation schemes of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0017] Figure 3 For this utility model Figure 2 A schematic diagram of the structure at center A;

[0018] Figure 4 This is a schematic diagram of the isometric side cross-sectional structure of the labyrinth jacket of the present invention;

[0019] Figure 5 This is a schematic diagram of the isometric side cross-section structure of the shaft-holding maze of the present utility model;

[0020] Figure 6This is a schematic diagram of the isometric side cross-sectional structure of the sealing member of the present invention.

[0021] In the figure, 1. Labyrinth jacket; 2. Shaft-holding labyrinth; 201. Slot one; 3. Air leakage channel; 4. Seal; 401. Oil seal cover; 402. Elastic ring one; 5. Clamping part; 6. Rotating contact part; 7. Elastic ring two; 8. Coil spring; 9. Annular protrusion; 10. Annular groove; 11. Flange one; 12. Flange two. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below with reference to specific illustrations.

[0023] Reference Figures 1-6 As shown, a leakage-proof fan rotor shaft neck comprises: a labyrinth jacket 1, a shaft-holding labyrinth 2 rotating on the inner wall of the labyrinth jacket 1, an air leakage channel 3 formed between the inner wall of the labyrinth jacket 1 and the outer wall of the shaft-holding labyrinth 2, and a seal 4. Specifically, one end of the labyrinth jacket 1 is connected to the fan equipment through a connector, wherein the fan equipment is an existing equipment device and is not elaborated in detail; the inner wall of the shaft-holding labyrinth 2 is connected to the outer surface of the fan shaft on the fan equipment, and the fan shaft is an existing technical structure on the fan equipment, and its main functions include transmitting power, supporting rotating mass and connecting various components, which are not elaborated in detail here; one end of the air leakage channel 3 mentioned above faces the fan equipment; the seal 4 is arranged at the other end of the air leakage channel 3, and the seal 4 is used to block the airflow from passing through the air leakage channel 3. When the above structure is in use, the shaft-holding labyrinth 2 is first connected to the labyrinth jacket 1, and then the shaft-holding labyrinth 2 is put on the fan shaft, and then the shaft-holding labyrinth is slid. 2, so that the labyrinth jacket 1 arranged on the outside of the shaft-holding maze 2 slides along, and then the labyrinth jacket 1 is connected to the fan equipment by using a connecting piece. Then, when the fan equipment is in operation, its output end will drive the fan shaft to rotate, and then drive the shaft-holding maze 2 connected to the fan shaft to rotate in the labyrinth jacket 1. When the labyrinth jacket 1 and the shaft-holding maze 2 rotate and rub against each other, the air leakage channel 3 generated between the two will receive the airflow driven by the fan equipment, and the airflow will flow into the air leakage channel 3 and flow out from the end of the air leakage channel 3 away from the fan equipment, and the seal 4 will block the airflow in the air leakage channel 3. In this process, by connecting the shaft-holding maze 2 to the outside of the fan shaft and setting the labyrinth jacket 1 outside the shaft-holding maze 2, and then using the seal 4 to block the airflow flowing in the air leakage channel 3 in the air leakage channel 3, no air leakage will occur at the connection between the fan equipment and the fan shaft, thereby ensuring the gas transmission efficiency and use effect of the fan.

[0024] The seal 4 includes a U-shaped oil seal cover 401 and an elastic ring 402. The oil seal cover 401 is provided with a clamping portion 5 and a rotating contact portion 6 in contact with the outer wall of the shaft-holding labyrinth 2. The oil seal cover 401 between the two has a certain elasticity. The rotating contact portion 6 is preferably made of fluororubber, which has good wear resistance and heat resistance during use, and has a long service life and is not easy to damage. The elastic ring 402 is connected to the rotating contact portion 6. The material of the elastic ring 402 is consistent with the material of the rotating contact portion 6, preferably The material is wear-resistant and heat-resistant, and the clamping part 5 and the elastic ring 402 are in contact with the outer wall and the inner wall of one end of the labyrinth jacket 1 respectively, so that the oil seal cover 401 is clamped on the labyrinth jacket 1 and the shaft-holding labyrinth 2, and the position of the elastic ring 402 corresponds to the end of the air leakage channel 3 away from the fan equipment, and when the rotating contact part 6 is in use, the contact surface between it and the shaft-holding labyrinth 2 is lubricated with lubricating oil. When rotational friction occurs between the two, an oil film will be generated in the gap between the two, which reduces friction while ensuring airtightness.

[0025] Furthermore, in order to increase the close contact between the rotating contact part 6 and the shaft-holding maze 2, a groove 201 is provided on the outer wall of one end of the shaft-holding maze 2, and an elastic ring 2 7 is provided in the groove 201. The rotating contact part 6 is movably engaged in the groove 201 and contacts the outer surface of the elastic ring 2 7. The rotating contact part 6 and the elastic ring 2 7 are both elastic, so when the two rotate relative to each other, the contact between them will be enhanced.

[0026] Among them, in order to ensure the contact force between the rotating contact part 6 and the outer surface of the elastic ring 2 7, a coil spring 8 is provided on the inner side of the rotating contact part 6. When the shaft-holding maze 2 rotates in the maze jacket 1, the contact force between the rotating contact part 6 and the outer surface of the elastic ring 2 7 is increased under the action of the contraction force of the coil spring 8, thereby ensuring the sealing of the air leakage channel 3 by the rotating contact part 6.

[0027] Furthermore, a circular protrusion 9 is provided on the inner wall of the labyrinth jacket 1, and a circular groove 10 corresponding to the position of the circular protrusion 9 is provided on the outer wall of the shaft-holding labyrinth 2, so that when the labyrinth jacket 1 and the shaft-holding labyrinth 2 rotate, the position relationship of the labyrinth jacket 1 will be limited by the mutual engagement of the circular groove 10 and the circular protrusion 9, so that the problem of the two being separated from each other will not occur.

[0028] Furthermore, the connecting parts include flange 11 and flange 2 12. Flange 11 is connected to the fan equipment by welding, flange 2 12 is connected to flange 11 by bolts, and flange 2 12 is fixedly connected to one end of the labyrinth jacket 1 close to the fan equipment. The shaft-holding labyrinth 2 and the labyrinth jacket 1 are connected to flange 11 through flange 2 12, so that both are installed on the fan equipment.

Claims

1. A fan rotor journal with air leakage prevention, characterized in that: include: A labyrinth jacket (1), one end of the labyrinth jacket (1) being connected to the fan equipment via a connector; Rotating the shaft-holding labyrinth (2) on the inner side wall of the labyrinth jacket (1), wherein the inner side wall of the shaft-holding labyrinth (2) is connected to the outer surface of the fan shaft on the fan distribution device; An air leakage channel (3) is formed between the inner wall of the labyrinth jacket (1) and the outer wall of the shaft-holding labyrinth (2), and one end of the air leakage channel (3) faces the fan equipment; A sealing member (4) is provided at the other end of the air leakage channel (3), and the sealing member (4) is used to block airflow from passing through the air leakage channel (3).

2. The anti-air leakage fan rotor journal according to claim 1, characterized in that: The sealing member (4) comprises a U-shaped oil seal cover (401) and an elastic ring (402). The oil seal cover (401) is provided with a clamping portion (5) and a rotating contact portion (6) in contact with the outer wall of the shaft-holding labyrinth (2). The elastic ring (402) is connected to the rotating contact portion (6). The clamping portion (5) and the elastic ring (402) are in contact with the outer wall and the inner wall of one end of the labyrinth jacket (1), respectively. The position of the elastic ring (402) corresponds to the end of the air leakage channel (3) away from the fan device.

3. The wind turbine rotor journal according to claim 2, characterized in that: A slot 1 (201) is provided on the outer side wall of one end of the shaft-holding maze (2), an elastic ring 2 (7) is provided in the slot 1 (201), and the rotating contact portion (6) is movably engaged in the slot 1 (201) and contacts the outer surface of the elastic ring 2 (7).

4. The anti-air leakage fan rotor journal according to claim 2, characterized in that: A coil spring (8) is sleeved on the inner side of the rotating contact portion (6).

5. The wind turbine rotor journal with air leakage prevention according to claim 1, characterized in that: The inner wall of the labyrinth jacket (1) is provided with a circular protrusion (9), and the outer wall of the axis-holding labyrinth (2) is provided with a circular groove (10) corresponding to the position of the circular protrusion (9).

6. The wind turbine rotor journal with air leakage prevention according to claim 1, characterized in that: The connecting member includes flange 1 (11) and flange 2 (12), wherein flange 1 (11) is connected to the fan device by welding, and flange 2 (12) is connected to flange 1 (11) by bolts, and flange 2 (12) is fixedly connected to one end of the labyrinth jacket (1) close to the fan device.

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