CN219994388U - Automatic compensation sealing structure of shaft core cooling main shaft - Google Patents

Abstract

The utility model discloses an automatic compensation sealing structure of a shaft core cooling main shaft, which comprises a main shaft and a movable ring, wherein the automatic compensation sealing structure comprises an axial sliding ring arranged on the outer wall of the main shaft, one end of the axial sliding ring is fixedly provided with an air hole plate, the air hole plate can be attached to the movable ring, and the other end of the axial sliding ring is provided with an automatic compensation piece for attaching the air hole plate to the movable ring; the axial slip ring is provided with an air inlet hole, the air hole plate is provided with a plurality of small holes along the circumference, the small holes face the movable ring, when compressed air enters the air inlet hole, the compressed air blows to the movable ring and overcomes the force of the automatic compensation piece, so that a gap B is formed between the air hole plate and the movable ring. The utility model can realize sealing function in both static state and running state, has no abrasion, good effect and long service life.

Description

Automatic compensation sealing structure of shaft core cooling main shaft

Technical Field

The utility model relates to sealing of a spindle, in particular to an automatic compensation sealing structure of a spindle core cooling spindle.

Background

In the process of the rotary movement of the rotary main shaft, the externally arranged cooling liquid can enter the outer circular surface of the main shaft through the gap, so that the movement of the main shaft is blocked or the main shaft is damaged.

At present, one way of solving the problem of cooling liquid permeation is to use a sealing ring, and the other way is to use a mechanical seal, wherein the sealing ring is easy to realize the permeation prevention function when the main shaft is in a static state, but is easy to wear when in a rotating state, and the mechanical seal still has gaps and still can permeate when in the rotating state after long-term use.

Disclosure of Invention

In order to solve the defects in the prior art, the utility model provides an automatic compensation sealing structure of a shaft core cooling main shaft, which can realize a sealing function in a static state and an operating state, has no abrasion, and has good effect and long service life.

In order to achieve the technical purpose, the utility model adopts the following technical scheme: the automatic compensation sealing structure of the spindle core cooling spindle comprises a spindle and a movable ring, wherein the automatic compensation sealing structure comprises an axial sliding ring arranged on the outer wall of the spindle, an air hole plate is fixedly arranged at one end of the axial sliding ring and can be attached to the movable ring, and an automatic compensation piece is arranged at the other end of the axial sliding ring and used for attaching the air hole plate to the movable ring;

the axial slip ring is provided with an air inlet hole, the air hole plate is provided with a plurality of small holes along the circumference, the small holes face the movable ring, when compressed air enters the air inlet hole, the compressed air blows to the movable ring and overcomes the force of the automatic compensation piece, so that a gap B is formed between the air hole plate and the movable ring.

Further, the automatic compensation piece adopts a spring, a mounting hole is formed in one end of the axial slip ring, and the spring is mounted in the mounting hole and used for applying pressure to the axial slip ring so that the air hole plate is attached to the moving ring.

Further, the air hole plate is provided with a butt ring groove, the butt ring groove is communicated with the air inlet hole, and the butt ring groove is communicated with the small hole, so that compressed air is blown to the movable ring.

Further, the air hole plate is provided with a thin channel, one end of the thin channel is communicated with the butt-joint ring groove, the other end of the thin channel is communicated with the small hole, and the diameter of the thin channel is smaller than the width of the butt-joint ring groove and smaller than the diameter of the small hole.

In summary, the present utility model achieves the following technical effects:

the spring is arranged, so that the attaching force can be automatically compensated, the air hole plate is attached to the movable ring, the sealing effect is realized by the attachment of the surface in a static state, and the sealing effect is good;

the utility model is provided with the air hole plate, forms an air gap by using compressed air, blocks the cooling liquid outside, prevents permeation, realizes sealing in the running state of the main shaft, and has good sealing effect;

the utility model can realize sealing in two states of the static state of the main shaft and the running state of the main shaft, prevent the main shaft from being damaged and has long service life.

Drawings

FIG. 1 is a schematic diagram of an automatic compensating seal structure of a spindle cooling spindle according to an embodiment of the present utility model;

FIG. 2 is an enlarged partial schematic view of the stationary state of FIG. 1;

fig. 3 is an enlarged partial schematic view of the operating state of fig. 1.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings.

The present embodiment is only for explanation of the present utility model and is not to be construed as limiting the present utility model, and modifications to the present embodiment, which may not creatively contribute to the present utility model as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

Examples:

as shown in fig. 1, an automatic compensation sealing structure of a spindle core cooling spindle comprises a spindle 1 and a movable ring 5, wherein the automatic compensation sealing structure comprises an axial sliding ring 2 arranged on the outer wall of the spindle 1, the axial sliding ring 2 can axially slide along the outer wall of the spindle 1, an air hole plate 4 is fixedly arranged at one end of the axial sliding ring 2, the air hole plate 4 can be attached to the movable ring 5, and an automatic compensation piece 3 is arranged at the other end of the axial sliding ring 2 and used for attaching the air hole plate 4 to the movable ring 5. The axial slip ring 2 is provided with an air inlet hole 22 for entering compressed air, the automatic compensation piece 3 adopts a spring, one end of the axial slip ring 2 is provided with a mounting hole 21, and the spring is arranged in the mounting hole 21 and used for applying pressure to the axial slip ring 2 so that the air hole plate 4 is attached to the movable ring 5.

Specifically, as shown in fig. 2, which is a partially enlarged schematic view of the stationary state of fig. 1, compressed air of the air inlet hole 22 is disconnected, the air hole plate 4 and the axial slip ring 2 are integrated, tension exists in the left spring, the tension F presses the axial slip ring 2, so that the axial slip ring 2 moves rightward, the air hole plate 4 moves rightward and clings to the surface of the moving ring to form a fit of the position a, at this time, under the stationary state of the spindle 1, external cooling liquid cannot enter the outer wall of the spindle, so that the penetration of the cooling liquid is prevented, and the damage of the spindle is prevented.

As shown in fig. 3, which is a partially enlarged schematic view of the operation state of fig. 1, the air hole plate 4 is provided with a plurality of small holes 42 along the circumference, the small holes 42 are uniformly distributed along the circumference, the small holes 42 are densely arranged, the small holes 42 face the moving ring 5, when the air inlet holes 22 enter compressed air, the compressed air blows to the moving ring 5 and overcomes the force of the automatic compensation piece 3, so that a gap B is formed between the air hole plate 4 and the moving ring 5, at this time, in the operation state of the spindle 1, the compressed air continuously blows to the gap B, so as to block the entry of external cooling liquid, prevent the penetration of the cooling liquid, and prevent the damage of the spindle.

Further, the air hole plate 4 is provided with a docking ring groove 41, the docking ring groove 41 is communicated with the air inlet hole 22, and the docking ring groove 41 is communicated with the small hole 42, so that compressed air is blown to the movable ring 5. The air hole plate 4 is provided with a thin channel 43, one end of the thin channel 43 is communicated with the butt ring groove 41, the other end of the thin channel 43 is communicated with the small hole 42, and the diameter of the thin channel 43 is smaller than the width of the butt ring groove 41 and smaller than the diameter of the small hole 42. The compressed air is processed in the butt ring groove 41 and conveyed into the small holes 42, so that the smoothness of the compressed air conveying is improved, and the efficiency is improved. The fine passages 43 raise the pressure of the compressed air so that the pressure of the gas blown toward the gap B is greater, improving the effect of preventing the inflow of the cooling liquid.

The utility model relates to a sealing structure for a spindle core cooling main shaft, wherein the right end face of an axial slip ring 2 and the left end face of a movable ring 5 are sealing faces A, when compressed air is disconnected and the main shaft 1 is static, the axial slip ring 2 is under the action of a spring force F, the sealing faces A are attached at the moment, and at the moment, the two joint faces are ensured to be capable of effectively preventing leakage of cooling media; when the compressed air is connected in fig. 3, the compressed air generates end face pressure through the dense holes 42 on the circumference of the air hole plate 4, and the axial slip ring 2 moves leftwards integrally against the spring force, so that the original attached surface generates a tiny gap B, and the spindle 1 can work and rotate at the moment. The cooling liquid can be prevented from entering the gap under the action of continuous compressed air, and finally the aim of sealing is achieved. The gap size is automatically compensated by the spring force F when the compressed air pressure fluctuates.

The foregoing description is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model in any way, and any simple modification, equivalent variation and modification made to the above embodiments according to the technical principles of the present utility model are within the scope of the technical solutions of the present utility model.

Claims (4)

1. The utility model provides an axle core cooling main shaft automatic compensation seal structure, includes main shaft (1) and rotating ring (5), its characterized in that: the automatic air hole plate comprises an axial slip ring (2) arranged on the outer wall of the main shaft (1), an air hole plate (4) is fixedly arranged at one end of the axial slip ring (2), the air hole plate (4) can be attached to the movable ring (5), and an automatic compensation piece (3) is arranged at the other end of the axial slip ring (2) and used for attaching the air hole plate (4) to the movable ring (5);

an air inlet hole (22) is formed in the axial slip ring (2), a plurality of small holes (42) are formed in the air hole plate (4) along the circumference, the small holes (42) face the movable ring (5), and when compressed air enters the air inlet hole (22), the compressed air blows to the movable ring (5) and overcomes the force of the automatic compensation piece (3), so that a gap B is formed between the air hole plate (4) and the movable ring (5).

2. The automatic compensating and sealing structure of a spindle cooling spindle according to claim 1, wherein: the automatic compensation piece (3) adopts a spring, a mounting hole (21) is formed in one end of the axial sliding ring (2), and the spring is mounted in the mounting hole (21) and used for applying pressure to the axial sliding ring (2) so that the air hole plate (4) is attached to the moving ring (5).

3. The automatic compensating and sealing structure of the spindle cooling main shaft according to claim 2, wherein: the air hole plate (4) is provided with a butt ring groove (41), the butt ring groove (41) is communicated with the air inlet hole (22), and the butt ring groove (41) is communicated with the small hole (42) so that compressed air is blown to the movable ring (5).

4. A mandrel cooling spindle self-compensating seal as claimed in claim 3, wherein: the air hole plate (4) is provided with a thin channel (43), one end of the thin channel (43) is communicated with the docking ring groove (41), the other end of the thin channel is communicated with the small hole (42), and the diameter of the thin channel (43) is smaller than the width of the docking ring groove (41) and smaller than the diameter of the small hole (42).