Labyrinth type sealing mechanism for shaft connecting bearing

Abstract

The utility model discloses a labyrinth type sealing mechanism for a shaft connecting bearing, which relates to the field of parts of mechanical equipment, and comprises a grinding head slide shoe bearing and a mill cylinder arranged on one side of the grinding head slide shoe bearing, and further comprises a moving ring arranged on one side of the grinding head slide shoe bearing close to the mill cylinder, and a sealing ring arranged on the other side of the grinding head slide shoe bearing close to the mill cylinder. The movable ring is also positioned on the outer side of the mill cylinder; the movable ring comprises a bottom plate which is fixedly mounted on one side, close to a mill cylinder, of a grinding head slide shoe bearing; according to the labyrinth type sealing mechanism for the shaft connecting bearing, through the arrangement of the movable ring and the static ring, the grinding head sliding shoe bearing and a grinding machine barrel are connected and sealed, a straight plate is connected with a supporting plate, and sealing plates are symmetrically arranged, so that the sealing effect is improved, lubricating oil is effectively prevented from leaking, external pollutants are effectively prevented from entering, and reinforcing ribs in the movable ring are distributed in a linear array mode; the mechanical strength of the transverse plate is enhanced, deformation is prevented, and the stability of the sealing mechanism under high-speed rotation is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical equipment parts technology, concretely relates to a labyrinth seal mechanism for shaft coupling bearing. BACKGROUND

[0002] The wind-swept coal mill is mainly used for grinding coal with various hardness, and is the main equipment of the coal powder preparation system in the cement industry, thermal power generation and chemical industry. It is suitable for grinding coal, coal powder and other materials with low water content, and can convert coal into fine powder suitable for industrial use through grinding and drying.

[0003] The existing wind-swept coal mill adopts dovetail sealing structure between the mill head sliding shoe bearing and the mill cylinder during rolling operation of the mill cylinder. However, the dovetail sealing structure between the mill head sliding shoe bearing and the mill cylinder is prone to deformation and wear during rotation of the mill cylinder, which causes oil leakage at the joint surface, affects the sealing effect, increases the loss of oil, and allows external dust to enter and contaminate the lubricating oil through the deformed dovetail sealing structure. SUMMARY

[0004] The utility model discloses a labyrinth seal mechanism for shaft coupling bearing, which solves the problem of easy deformation of the sealing part in the prior art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a labyrinth seal mechanism for shaft coupling bearing, comprising a mill head sliding shoe bearing and a mill cylinder, the mill cylinder is arranged on one side of the mill head sliding shoe bearing, and further comprising:

[0006] A movable ring is arranged on the side of the mill head sliding shoe bearing close to the mill cylinder, and the movable ring is also located outside the mill cylinder;

[0007] The movable ring comprises:

[0008] A bottom plate is fixedly installed on the side of the mill head sliding shoe bearing close to the mill cylinder;

[0009] A vertical plate is fixedly installed on the side of the bottom plate away from the mill cylinder;

[0010] A horizontal plate is fixedly installed on the side of the vertical plate away from the bottom plate, and the horizontal plate is also located on the side of the vertical plate away from the mill cylinder;

[0011] A straight plate is fixedly installed on the side of the horizontal plate away from the vertical plate, and the straight plate is also located on the side of the horizontal plate close to the bottom plate;

[0012] A plurality of reinforcing ribs are arranged in linear array on the side of the horizontal plate away from the bottom plate, and the reinforcing ribs are fixedly connected with the horizontal plate;

[0013] A static ring is arranged outside the mill barrel, and part of the static ring is connected with the dynamic ring;

[0014] The static ring comprises:

[0015] An installation plate is sleeved outside the mill barrel, and the inner side of the installation plate is fixedly connected with the outer side of the mill barrel;

[0016] A connecting plate is fixedly installed on the side of the installation plate close to the slide shoe bearing of the grinding head;

[0017] An arc-shaped plate is fixedly installed on the side of the connecting plate close to the slide shoe bearing of the grinding head;

[0018] A support plate is fixedly installed on the side of the arc-shaped plate away from the connecting plate;

[0019] Two sealing plates are fixedly installed on the side of the support plate away from the connecting plate, and the two sealing plates are symmetrically arranged;

[0020] A first folding plate is fixedly installed on the side of the support plate close to the mill barrel;

[0021] The straight plate is connected with the side of the support plate close to the connecting plate.

[0022] Further, a pressing plate is fixedly installed on the outer side of the installation plate.

[0023] Further, an inner fixing plate is arranged between the longitudinal plate and the mill barrel, the inner fixing plate is in an L-shaped cross section, one side of the inner fixing plate is fixedly connected with the slide shoe bearing of the grinding head, and the vertical surface of the inner fixing plate is fixedly connected with the longitudinal plate.

[0024] Further, an outer fixing plate is arranged on the side of the longitudinal plate away from the mill barrel, and part of the outer fixing plate is embedded into the side of the bottom plate away from the slide shoe bearing of the grinding head.

[0025] Further, a limiting plate is fixedly installed on the side of the bottom plate away from the slide shoe bearing of the grinding head, and part of the limiting plate is fixedly connected with the part of the outer fixing plate embedded into the inner side of the bottom plate.

[0026] Further, a limiting groove is fixedly installed on the side of the limiting plate away from the bottom plate, and the inner side of the limiting groove is connected with the outer side of the sealing plate.

[0027] Compared with the prior art, the labyrinth seal mechanism for the shaft connecting bearing is provided, the slide shoe bearing of the grinding head is connected and sealed with the mill barrel through the arrangement of the dynamic ring and the static ring, the straight plate is connected with the support plate, and the sealing plates are symmetrically arranged, so that the sealing effect is improved, and the leakage of lubricating oil and the entry of external pollutants are effectively prevented.

[0028] The linear array of reinforcing ribs in the rotating ring enhances the mechanical strength of the cross plate, prevents deformation, and ensures the stability of the sealing mechanism under high-speed rotation.

[0029] The stationary ring is fixedly connected to the mill cylinder via a mounting plate, while the rotating ring is fixedly connected to the mill head sliding bearing via a base plate. The modular design facilitates installation and disassembly, reducing maintenance difficulty and time.

[0030] The inclusion of inner and outer fixing plates, along with the connection between the limiting plate and the limiting groove, enhances the overall structure's resistance to vibration and impact, and extends its service life.

[0031] This sealing mechanism is suitable for a variety of working conditions, especially for high-speed grinding head sliding bearings and harsh environments, and has high versatility and practicality.

[0032] The design of the arc plate and the folded plate optimizes the contact method between the moving ring and the stationary ring, reduces friction and wear, and further improves the sealing effect and the service life of the mechanism. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0034] Figure 1 A schematic diagram of the overall structure provided for an embodiment of this utility model;

[0035] Figure 2 This is a schematic cross-sectional view of the overall structure provided for an embodiment of the present utility model;

[0036] Figure 3 This is a first cross-sectional view of a partial structure provided in an embodiment of the present utility model;

[0037] Figure 4 This is a second cross-sectional view of a partial structure provided for an embodiment of the present utility model.

[0038] Explanation of reference numerals in the attached figures:

[0039] 1. Grinding head sliding bearing; 2. Grinding mill cylinder; 3. Pressure plate; 4. Stationary ring; 5. Rotary ring; 6. Inner fixed plate; 7. Outer fixed plate; 8. Limiting plate; 9. Limiting groove; 41. Mounting plate; 42. Connecting plate; 43. Arc plate; 44. Support plate; 45. Sealing plate; 46. Folded plate one; 51. Base plate; 52. Longitudinal plate; 53. Horizontal plate; 54. Straight plate; 55. Reinforcing rib. Detailed Implementation

[0040] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0041] Example 1:

[0042] Please see Figures 1-4 A labyrinth seal mechanism for shaft-connected bearings includes a grinding head sliding bearing 1 and a mill cylinder 2, the mill cylinder 2 being disposed on one side of the grinding head sliding bearing 1, and further includes:

[0043] The rotating ring 5 is located on the side of the grinding head sliding bearing 1 near the mill cylinder 2, and the rotating ring 5 is also located on the outside of the mill cylinder 2;

[0044] The dynamic ring 5 includes:

[0045] The base plate 51 is fixedly installed on the side of the grinding head sliding bearing 1 near the grinding mill cylinder 2;

[0046] The longitudinal plate 52 is fixedly installed on the side of the base plate 51 away from the mill cylinder 2;

[0047] The horizontal plate 53 is fixedly installed on the side of the vertical plate 52 away from the bottom plate 51, and the horizontal plate 53 is also located on the side of the vertical plate 52 away from the mill cylinder 2.

[0048] Straight plate 54 is fixedly installed on the side of horizontal plate 53 away from vertical plate 52, and straight plate 54 is also located on the side of horizontal plate 53 close to bottom plate 51.

[0049] Several reinforcing ribs 55 are arranged in a linear array on the side of the horizontal plate 53 away from the bottom plate 51, and the reinforcing ribs 55 are fixedly connected to the horizontal plate 53.

[0050] The stationary ring 4 is located on the outside of the mill cylinder 2, and part of the stationary ring 4 is connected to the rotating ring 5;

[0051] Static ring 4 includes:

[0052] Mounting plate 41 is sleeved on the outside of mill cylinder 2, and the inner side of mounting plate 41 is fixedly connected to the outside of mill cylinder 2.

[0053] The connecting plate 42 is fixedly installed on the side of the mounting plate 41 near the grinding head sliding bearing 1;

[0054] The arc-shaped plate 43 is fixedly installed on the side of the connecting plate 42 near the grinding head sliding bearing 1;

[0055] Support plate 44 is fixedly installed on the side of arc plate 43 away from connecting plate 42;

[0056] Two sealing plates 45 are fixedly installed on the side of the support plate 44 away from the connecting plate 42, and the two sealing plates 45 are symmetrically arranged.

[0057] Folding plate 46 is fixedly installed on the side of support plate 44 near mill cylinder 2;

[0058] The straight plate 54 is connected to the support plate 44 on the side near the connecting plate 42.

[0059] The specific implementation method is as follows: the length of the straight plate 54 is smaller than the length of the longitudinal plate 52, there is a gap between the straight plate 54 and the bottom plate 51, part of the support plate 44 extends through the gap between the straight plate 54 and the bottom plate 51 to the space between the longitudinal plate 52 and the straight plate 54, the straight plate 54 and the support plate 44 are in close contact, the stationary ring 4 and the rotating ring 5 are connected, when the mill cylinder 2 and the mill head sliding bearing 1 are twisted after the device starts to work, the stationary ring 4 and the rotating ring 5 will rotate relative to each other, so that the structure will not deform during operation, further enhancing the stability of the seal.

[0060] A pressure plate 3 is fixedly installed on the outer side of the mounting plate 41.

[0061] The specific implementation method is as follows: the pressure plate 3 is used to enhance the stability of the connection between the mounting plate 41 and the mill cylinder 2.

[0062] An inner fixing plate 6 is provided between the longitudinal plate 52 and the mill cylinder 2. The inner fixing plate 6 has an L-shaped cross section. One side of the inner fixing plate 6 is fixedly connected to the mill head sliding bearing 1, and the vertical surface of the inner fixing plate 6 is fixedly connected to the longitudinal plate 52.

[0063] The specific implementation method is as follows: the inner fixing plate 6 is used to limit the inner side of the longitudinal plate 52, and at the same time, the inner fixing plate 6 is also used to enhance the fixation of the longitudinal plate 52.

[0064] An outer fixing plate 7 is provided on the side of the longitudinal plate 52 away from the mill cylinder 2, and part of the outer fixing plate 7 is embedded in the side of the bottom plate 51 away from the mill head sliding bearing 1.

[0065] The specific implementation method is as follows: the outer fixing plate 7 is used to reinforce and fix the outer side of the longitudinal plate 52.

[0066] A limiting plate 8 is fixedly installed on the side of the base plate 51 away from the grinding head sliding bearing 1. A portion of the limiting plate 8 is fixedly connected to the outer side of the portion of the outer fixing plate 7 embedded inside the base plate 51.

[0067] The specific implementation method is as follows: the limiting plate 8 is used to press the outer fixing plate 7 tightly against the outside of the base plate 51.

[0068] A limiting groove 9 is fixedly installed on the side of the limiting plate 8 away from the base plate 51, and the inner side of the limiting groove 9 is connected to the outer side of the sealing plate 45.

[0069] The specific implementation method is as follows: the limiting groove 9 is used to limit the sealing plate 45, and at the same time, when the stationary ring 4 rotates relative to it, the sealing plate 45 can rotate and move within the limiting groove 9.

[0070] Working principle: When the device starts working, the mill cylinder 2 and the mill head sliding bearing 1 twist, causing relative rotation between the stationary ring 4 and the rotating ring 5. Due to the sliding fit between the straight plate 54 and the support plate 44, and the design of the labyrinth seal structure, fluids (such as lubricating oil or dust) have difficulty passing through the sealing gap, thus achieving a good sealing effect.

[0071] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A labyrinth seal mechanism for a shaft-connected bearing, comprising a grinding head sliding bearing (1) and a mill cylinder (2), wherein the mill cylinder (2) is disposed on one side of the grinding head sliding bearing (1), characterized in that, Also includes: The rotating ring (5) is located on the side of the grinding head sliding bearing (1) near the mill cylinder (2), and the rotating ring (5) is also located on the outside of the mill cylinder (2); The moving ring (5) includes: The base plate (51) is fixedly installed on the side of the grinding head sliding bearing (1) near the mill cylinder (2); The longitudinal plate (52) is fixedly installed on the side of the base plate (51) away from the mill cylinder (2); A horizontal plate (53) is fixedly installed on the side of the longitudinal plate (52) away from the bottom plate (51), and the horizontal plate (53) is also located on the side of the longitudinal plate (52) away from the mill cylinder (2); A straight plate (54) is fixedly installed on the side of the horizontal plate (53) away from the vertical plate (52), and the straight plate (54) is also located on the side of the horizontal plate (53) near the bottom plate (51); A number of reinforcing ribs (55) are arranged in a linear array on the side of the horizontal plate (53) away from the bottom plate (51), and the reinforcing ribs (55) are fixedly connected to the horizontal plate (53). A stationary ring (4) is disposed on the outside of the mill cylinder (2), and part of the stationary ring (4) is connected to the moving ring (5); The stationary ring (4) includes: Mounting plate (41) is sleeved on the outside of mill cylinder (2), and the inner side of mounting plate (41) is fixedly connected to the outside of mill cylinder (2); A connecting plate (42) is fixedly installed on the side of the mounting plate (41) near the grinding head sliding bearing (1); An arc-shaped plate (43) is fixedly installed on the side of the connecting plate (42) near the grinding head sliding bearing (1); A support plate (44) is fixedly installed on the side of the arc plate (43) away from the connecting plate (42); Two sealing plates (45) are fixedly installed on the side of the support plate (44) away from the connecting plate (42), and the two sealing plates (45) are symmetrically arranged; Folding plate 1 (46) is fixedly installed on the side of the support plate (44) near the mill cylinder (2); The straight plate (54) is connected to the support plate (44) on the side near the connecting plate (42).

2. The labyrinth seal mechanism for shaft-connected bearings according to claim 1, characterized in that, A pressure plate (3) is fixedly installed on the outside of the mounting plate (41).

3. A labyrinth seal mechanism for shaft-connected bearings according to claim 1, characterized in that, An inner fixing plate (6) is provided between the longitudinal plate (52) and the mill cylinder (2). The inner fixing plate (6) has an L-shaped cross section. One side of the inner fixing plate (6) is fixedly connected to the mill head sliding bearing (1). The vertical surface of the inner fixing plate (6) is fixedly connected to the longitudinal plate (52).

4. A labyrinth seal mechanism for shaft-connected bearings according to claim 1, characterized in that, An outer fixing plate (7) is provided on the side of the longitudinal plate (52) away from the mill cylinder (2), and part of the outer fixing plate (7) is embedded in the side of the bottom plate (51) away from the mill head sliding bearing (1).

5. A labyrinth seal mechanism for shaft-connected bearings according to claim 4, characterized in that, A limiting plate (8) is fixedly installed on the side of the base plate (51) away from the grinding head sliding bearing (1), and a portion of the limiting plate (8) is fixedly connected to the outer side of the portion of the outer fixing plate (7) embedded inside the base plate (51).

6. A labyrinth seal mechanism for shaft-connected bearings according to claim 5, characterized in that, The limiting plate (8) is fixedly installed with a limiting groove (9) on the side away from the bottom plate (51), and the inner side of the limiting groove (9) is connected to the outer side of the sealing plate (45).

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