Novel labyrinth seal structure

Abstract

According to the technical scheme, the novel labyrinth seal structure comprises a wall breaking machine main shaft, the wall breaking machine main shaft is of a cylinder structure, a flange is installed on the arc-shaped outer side of the wall breaking machine main shaft, a supporting sleeve is installed on one side of the flange, the supporting sleeve is of an annular structure, a front cover is installed on the side, away from the flange, of the supporting sleeve, and a sealing ring is installed on the front cover. The front cover is fixedly connected with the supporting sleeve through a bolt, an air inlet pipe is installed on the inner side of the wall breaking machine main shaft, the air inlet pipe is of a bent structure, and the air inlet pipe is communicated with the wall breaking machine main shaft and the front cover. The gap between the bearing cover and the second sealing cover is smaller than the gap between the front cover and the first sealing cover, so that airflow flows along the direction of the large gap, and the airflow flows from a high-pressure position to a low-pressure position.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of shaft seal, especially is related to a new type of labyrinth seal structure. BACKGROUND

[0002] The shaft labyrinth seal is a non-contact seal, mainly used for sealing the rotating shaft, preventing fluid or gas leakage, the shaft labyrinth seal is composed of a series of sealing teeth and sealing grooves arranged in sequence, from the prior art, the common shaft seal structure adopts the packing seal, the sealing performance is limited, with time and use, the packing will wear, the tightness of the gland needs to be adjusted regularly to ensure the sealing effect. Moreover, since the packing directly contacts the shaft, the friction is large, which can cause wear of the shaft and generate certain heat, and the heat discharge is poor, therefore, the new type of labyrinth seal structure is provided.

[0003] It should be noted that the above content belongs to the technical cognition range of the utility model person, and does not necessarily constitute the prior art. CONTENT OF THE UTILITY MODEL

[0004] The utility model discloses a purpose to solve the existing shaft seal device in the prior art, the sealing performance is limited, with time and use, the packing will wear, the friction is large, and the new type of labyrinth seal structure is provided to overcome the shortcomings that heat is generated.

[0005] To achieve the above-mentioned purpose, the utility model provides a new type of labyrinth seal structure, including the blender main shaft, the blender main shaft is in the cylindrical structure, the arc shape outside of blender main shaft installs the flange, the one side of flange installs the support sleeve, the support sleeve is annular structure, the side away from the flange of support sleeve installs the front cover, the front cover is fixedly connected support sleeve through bolt, the inside of blender main shaft installs the air inlet pipe, the air inlet pipe is the bending structure, and the air inlet pipe is connected blender main shaft and front cover, the side away from support sleeve of front cover installs the first seal cover, the side close to front cover of first seal cover is equipped with the notch, the position close to first seal cover of front cover is equipped with the air outlet hole, the air outlet hole is connected with notch.

[0006] Preferably, the position close to the inside of the blender main shaft of the front cover is provided with a bearing cover, the position close to the first seal cover of the bearing cover is provided with a second seal cover, the bearing cover and the second seal cover are both annular structures, and the second seal cover and the bearing cover are mutually clamped.

[0007] Preferably, the gap between the bearing cover and the second seal cover is smaller than the gap between the front cover and the first seal cover.

[0008] Preferably, the flange is in a disc type structure, and the flange is integrally formed with the blender main shaft, and the mounting hole is formed in the flange.

[0009] Preferably, the first sealing cover, the front cover, the second sealing cover and the bearing cover are fixed by bolts.

[0010] Preferably, the bearing cover is provided with a sealing plug near one side of the main shaft of the wall breaking machine.

[0011] The novel labyrinth sealing structure can bring the following beneficial effects:

[0012] 1、In the utility model, the gap is formed between the front cover and the first sealing cover, and another group of gaps are formed between the bearing cover and the second sealing cover, the gap between the bearing cover and the second sealing cover is smaller than the gap between the front cover and the first sealing cover, the airflow flows along the direction of the large gap, the airflow flows from the high pressure to the low pressure, the air tightness is ensured, the gas reaches the notch position to form the uniform air curtain, and the gas is discharged from the gap between the front cover and the first sealing cover. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for the ordinary skilled in the art, other drawings can be obtained according to these drawings without paying creative labor.

[0014] Figure 1 It is the whole structure schematic view of the novel labyrinth sealing structure of the utility model;

[0015] Figure 2 It is the whole structure sectional view of the novel labyrinth sealing structure of the utility model;

[0016] Figure 3 It is the sectional view of the local structure in the novel labyrinth sealing structure of the utility model;

[0017] Figure 4 It is the novel labyrinth sealing structure of the utility model Figure 3 The enlarged schematic view of structure A.

[0018] In the drawing: 1, the main shaft of the wall breaking machine;2, the flange;3, the mounting hole;4, the front cover;5, the first sealing cover;6, the second sealing cover;7, the bearing cover;8, the air inlet pipe;9, the sealing plug;10, the air outlet hole;11, the notch;12, the support sleeve. DETAILED DESCRIPTION

[0019] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described, obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0020] In the description of the present application, it should be understood that the terms "upper", "middle", "outer", "inner", "lower", "periphery" and the like indicate the orientation or positional relationship, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0021] As shown in Figures 1-4 The novel labyrinth seal structure comprises a blender main shaft 1, the blender main shaft 1 is in a cylindrical structure, a flange 2 is installed on the arc-shaped outer side of the blender main shaft 1, a support sleeve 12 is installed on one side of the flange 2, the support sleeve 12 is in an annular structure, a front cover 4 is installed on the side of the support sleeve 12 away from the flange 2, the front cover 4 is fixedly connected to the support sleeve 12 through bolts, an air inlet pipe 8 is installed on the inner side of the blender main shaft 1, the air inlet pipe 8 is in a bent structure, and the air inlet pipe 8 communicates with the blender main shaft 1 and the front cover 4, a first sealing cover 5 is installed on the side of the front cover 4 away from the support sleeve 12, a notch 11 is formed on the side of the first sealing cover 5 close to the front cover 4, an air outlet hole 10 is formed on the position of the front cover 4 close to the first sealing cover 5, the air outlet hole 10 communicates with the notch 11, a gap is formed between the front cover 4 and the first sealing cover 5, and another gap is formed between a bearing cover 7 and a second sealing cover 6, the gap between the bearing cover 7 and the second sealing cover 6 is smaller than the gap between the front cover 4 and the first sealing cover 5, the airflow will flow in the direction of the large gap, the airflow flows from the high-pressure place to the low-pressure place, the air tightness is ensured, and the gas reaches the notch 11 position to form a uniform air curtain, so that the gas is discharged and does not remain in the inside.

[0022] The bearing cover 7 is installed on the position of the front cover 4 close to the inner side of the blender main shaft 1, the second sealing cover 6 is installed on the position of the bearing cover 7 close to the first sealing cover 5, the second sealing cover 6 and the bearing cover 7 are both in an annular structure, and the second sealing cover 6 and the bearing cover 7 are mutually clamped, the fitting gap between the bearing cover 7 and the second sealing cover 6 is smaller than the gap between the front cover 4 and the first sealing cover 5.

[0023] The flange 2 is in a disc structure, and the flange 2 is integrally formed with the blender main shaft 1, and the mounting hole 3 is formed on the flange 2.

[0024] The first sealing cover 5, the front cover 4, the second sealing cover 6 and the bearing cover 7 are fixed by bolts.

[0025] The bearing cover 7 is provided with a sealing plug 9 on the side close to the main shaft 1 of the wall breaking machine.

[0026] The working principle of the utility model is as follows: a gap is formed between the front cover 4 and the first sealing cover 5, and another gap is formed between the bearing cover 7 and the second sealing cover 6, the gap between the bearing cover 7 and the second sealing cover 6 is smaller than the gap between the front cover 4 and the first sealing cover 5, the airflow will flow along the direction of the larger gap, the airflow flows from the high pressure to the low pressure, the air tightness is ensured, the gas is evenly distributed to the slot 11 to form an air curtain, and the gas is discharged from the gap between the front cover 4 and the first sealing cover 5.

[0027] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the utility model. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0028] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details, and the utility model is not limited to the specific embodiments. Obviously, according to the content of the present specification, many modifications and changes can be made. The present specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that the persons skilled in the art can well understand and utilize the utility model. The utility model is limited by the claims and the whole scope and equivalents thereof.

Claims

1. A new labyrinth seal structure comprising a wall breaking machine spindle (1), characterized in that, The wall breaking machine spindle (1) is in a cylindrical structure, the arc-shaped outer side of the wall breaking machine spindle (1) is provided with a flange (2), one side of the flange (2) is provided with a support sleeve (12), the support sleeve (12) is in an annular structure, the side of the support sleeve (12) away from the flange (2) is provided with a front cover (4), the front cover (4) is fixedly connected with the support sleeve (12) through bolts, the inner side of the wall breaking machine spindle (1) is provided with an air inlet pipe (8), the air inlet pipe (8) is in a bending structure, and the air inlet pipe (8) is communicated with the wall breaking machine spindle (1) and the front cover (4), the side of the front cover (4) away from the support sleeve (12) is provided with a first sealing cover (5), the side of the first sealing cover (5) close to the front cover (4) is provided with a notch (11), the position of the front cover (4) close to the first sealing cover (5) is provided with an air outlet hole (10), and the air outlet hole (10) is communicated with the notch (11).

2. The novel labyrinth seal structure according to claim 1, wherein The position of the front cover (4) close to the inner side of the wall breaking machine spindle (1) is provided with a bearing cover (7), the position of the bearing cover (7) close to the first sealing cover (5) is provided with a second sealing cover (6), the second sealing cover (6) and the bearing cover (7) are both in an annular structure, and the second sealing cover (6) and the bearing cover (7) are mutually clamped.

3. The novel labyrinth seal structure according to claim 2, wherein The cooperation gap between the bearing cover (7) and the second sealing cover (6) is smaller than the gap between the front cover (4) and the first sealing cover (5).

4. The novel labyrinth seal structure according to claim 1, wherein The flange (2) is in a disc structure, and the flange (2) is integrally formed with the wall breaking machine spindle (1), and the flange (2) is provided with a mounting hole (3).

5. The novel labyrinth seal structure according to claim 2, wherein The first sealing cover (5), the front cover (4), the second sealing cover (6) and the bearing cover (7) are all fixed through bolts.

6. The novel labyrinth seal structure according to claim 5, wherein The side of the bearing cover (7) close to the wall breaking machine spindle (1) is provided with a sealing plug (9).

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