Self-adaptive sealer and compressor

Abstract

The utility model belongs to the technical field of sealers, and particularly relates to a self-adaptive sealer and a compressor. The problem that a gap is enlarged due to the fact that existing equipment cannot bear radial stress deformation during operation is solved. The self-adaptive sealer comprises a sealing main body, a plurality of sealing teeth are arranged on the inner wall of the sealing main body, and a plurality of spring type clearance grooves which are distributed circumferentially and distributed in the radial direction of the sealing main body are formed in the wall thickness of the sealing main body. The self-adaptive sealer has the advantages that the self-adaptive sealer can bear radial stress deformation between the self-adaptive sealer and the rotating main shaft in the running process of equipment, and the situation that the sealing effect is affected due to the fact that a gap between the rotating main shaft and the sealing main body is enlarged due to scraping is prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field of sealers, and in particular relates to an adaptive sealer and a compressor. Background Art

[0002] A turbo compressor is a dynamic compressor with a high-speed rotating impeller. The gas pressure is increased by the interaction between the rotating impeller and the airflow. Since the turbo compressor is a high-speed rotating device, surge and other vibrations caused by abnormal working conditions are unavoidable during operation. Although the axial clearance is reduced to ensure the sealing performance through the cooperation between the sealer and the main shaft, when the existing equipment is running abnormally, it cannot withstand radial stress deformation to protect the original sealing teeth from deformation under pressure. There is a scratch between the rotating main shaft and the sealer, which causes the clearance to become larger and affects the sealing effect.

[0003] For example, a Chinese patent discloses a movable ring seal Chinese patent number [CN201320573050.X], a movable ring seal, including a housing and a rotating shaft, provided with a bushing, the outer ring of the bushing is installed between the housing and the rotating shaft in close contact with the housing, at least one "V"-shaped groove coaxial with the inner hole of the bushing is formed on the inner hole wall of the bushing, and a movable ring is installed in the groove; the cross section of the movable ring is "U"-shaped, the inner diameter of the movable ring is larger than the outer diameter of the rotating shaft, and they are in a dynamic fit with each other. It solves the existing problems of overcoming the existing commonly used packing sealing method, such as the large friction between the packing and the rotating shaft, which makes the packing life short and the energy consumption high, and the mechanical sealing method, such as complex structure, high cost, difficult disassembly and assembly, easy to cause vibration and noise.

[0004] Although the above solution has the above advantages, it does not solve the above technical problems. Utility Model Content

[0005] The purpose of the utility model is to provide an adaptive sealer and a compressor to solve the above-mentioned technical problems in view of the above-mentioned problems in the prior art.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] The adaptive sealer comprises a sealing body, a plurality of sealing teeth are arranged on the inner wall of the sealing body, and a plurality of spring-type clearance grooves are arranged on the wall thickness of the sealing body and are distributed circumferentially and radially along the sealing body.

[0008] The above-mentioned adaptive sealer comprises a sealing body, at one axial end of the sealing body, the spring-type gap groove is in communication with the outside.

[0009] The above-mentioned adaptive sealer comprises a sealing body, at one axial end of the sealing body, the spring-type gap groove is extended to the middle part of the sealing body away from the side communicating with the outside.

[0010] The above-mentioned adaptive sealer includes a sealing body, and the spring-type gap groove is a spiral structure.

[0011] The above-mentioned adaptive sealer includes a sealing body, and the spring-type gap grooves are evenly distributed in the circumferential direction of the sealing body.

[0012] The above-mentioned adaptive sealer includes a sealing body, the sealing teeth include a plurality of large inner diameter sealing lips and a plurality of small inner diameter sealing lips, and one small inner diameter sealing lip is provided between two adjacent large inner diameter sealing lips.

[0013] A compressor, the compressor also comprising an adaptive sealer as described in any one of the above items.

[0014] Compared with the prior art, the adaptive sealer has the following beneficial effects:

[0015] The radial stress deformation between the adaptive seal and the rotating main shaft is realized during the operation of the equipment, and the gap between the rotating main shaft and the sealing body is prevented from increasing due to scratches, which affects the sealing effect. The sealing teeth cooperate with the rotating main shaft, and the spring-type gap grooves distributed in the radial direction of the sealing body are combined to adaptively adjust the gap between the sealing body and the rotating main shaft, which avoids the sealing teeth from seriously scratching the main shaft, thereby extending the service life of the sealing body, and simultaneously protecting the rotating main shaft from being seriously scratched by the scraping of the sealing teeth. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A reference diagram for installing an adaptive sealer provided in accordance with an embodiment of the present utility model.

[0017] Figure 2 This is a full cross-sectional view of the adaptive sealer.

[0018] Figure 3 This is the left view of the adaptive sealer.

[0019] In the figure, there are a sealing body 1 , sealing teeth 2 , a large inner diameter sealing lip 21 , a small inner diameter sealing lip 22 , a spring-type clearance groove 3 , and a rotating main shaft 4 . DETAILED DESCRIPTION

[0020] The following are specific embodiments of the utility model and the accompanying drawings to further describe the technical solution of the utility model, but the utility model is not limited to these embodiments. Embodiment 1

[0021] like Figures 1 to 3As shown, the adaptive sealer includes a sealing body 1, a plurality of sealing teeth 2 are provided on the inner wall of the sealing body 1, and a plurality of spring-type gap grooves 3 are provided on the wall thickness of the sealing body 1 and are distributed in a circumferential manner and radially along the sealing body 1. Specifically, the adaptive sealer in this embodiment uses the characteristics of telescopic deformation, the adaptive sealer is sleeved on the rotating main shaft 4, and the adaptive sealer and the rotating main shaft 4 are connected in a dynamic seal, and the dynamic seal, such as the sealing teeth, cooperates with the rotating main shaft 4 through the sealing teeth 2, and is combined with the spring-type gap grooves 3 distributed in the radial direction of the sealing body 1 to adaptively adjust the gap between the sealing body 1 and the rotating main shaft 4, so as to avoid the sealing teeth 2 from seriously scratching the main shaft, thereby extending the service life of the sealing body 1, and simultaneously protecting the rotating main shaft 4 from being seriously scratched by the sealing teeth 2.

[0022] To achieve the adaptive force between the sealing body 1 and the rotating main shaft 4, as Figure 1 and Figure 2 As shown, at one axial end of the sealing body 1, the spring-type clearance groove 3 is connected to the outside, so that when the sealing body 1 is in abnormal operation, the clearance groove can withstand radial stress deformation to protect the original sealing teeth from deformation under pressure.

[0023] To ensure good radial deformation stress of the spring-type gap groove 3, specifically, in this embodiment, at one axial end of the sealing body 1, the spring-type gap groove 3 is extended to the middle of the sealing body 1 away from the side that is connected to the outside. More specifically, in this embodiment, the spring-type gap groove 3 is a spiral structure. Similar to the autonomous contraction characteristics of a spring, the gap between the sealing body 1 and the rotating main shaft 4 is adaptively adjusted.

[0024] In order to ensure good sealing effect in all directions during use of the sealing body 1, Figures 1 to 3 As shown, the spring-type gap grooves 3 are evenly distributed in the circumferential direction of the sealing body 1. Specifically, in this embodiment, there are six spring-type gap grooves 3, and the six spring-type gap grooves 3 are spaced at the same distance to ensure the force between the rotating main shaft 4 in all directions.

[0025] To install the rotating spindle 4 on the sealing body, as shown in FIG. Figures 1 to 3 As shown, the sealing tooth 2 includes a plurality of large inner diameter sealing lips 21 and a plurality of small inner diameter sealing lips 22, and a small inner diameter sealing lip 22 is provided between two adjacent large inner diameter sealing lips 21. When installed, the rotating main shaft 4 extends into the sealing body 1, and at this time, the large inner diameter sealing lips 21 and the small inner diameter sealing lips 22 of the sealing tooth 2 respectively form a sealing contact with the outer wall of the rotating main shaft 4.

[0026] The radial stress deformation between the adaptive seal and the rotating main shaft is realized during the operation of the equipment, and the gap between the rotating main shaft and the sealing body is prevented from increasing due to scratches, which affects the sealing effect. The sealing teeth cooperate with the rotating main shaft, and the spring-type gap grooves distributed in the radial direction of the sealing body are combined to adaptively adjust the gap between the sealing body and the rotating main shaft, which avoids the sealing teeth from seriously scratching the main shaft, thereby extending the service life of the sealing body, and simultaneously protecting the rotating main shaft from being seriously scratched by the scraping of the sealing teeth.

[0027] Embodiment 2

[0028] like Figures 1 to 3 As shown, the compressor also includes the adaptive sealer of the above-mentioned embodiment one.

[0029] Although the terms such as sealing body 1, sealing teeth 2, large inner diameter sealing lip 21, small inner diameter sealing lip 22, spring type clearance groove 3, rotating main shaft 4 are used more frequently in this article, the possibility of using other terms is not excluded. The use of these terms is only for more convenient description and explanation of the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. An adaptive sealer, comprising a sealing body (1), wherein a plurality of sealing teeth (2) are provided on the inner wall of the sealing body (1), It is characterized in that A plurality of spring-type clearance grooves (3) are provided on the wall thickness of the sealing body (1) and are distributed circumferentially and radially along the sealing body (1).

2. The adaptive sealer according to claim 1, It is characterized in that At one axial end of the sealing body (1), the spring-type clearance groove (3) is in communication with the outside.

3. The adaptive sealer according to claim 2, It is characterized in that At one axial end of the sealing body (1), the spring-type clearance groove (3) is extended to the middle of the sealing body (1) away from the side communicating with the outside.

4. The adaptive sealer according to claim 1, It is characterized in that The spring-type gap groove (3) has a spiral structure.

5. The adaptive sealer according to claim 1, It is characterized in that The spring-type clearance grooves (3) are evenly distributed in the circumferential direction of the sealing body (1).

6. The adaptive sealer according to claim 1, It is characterized in that The sealing tooth (2) comprises a plurality of large inner diameter sealing lips (21) and a plurality of small inner diameter sealing lips (22), wherein one small inner diameter sealing lip (22) is provided between two adjacent large inner diameter sealing lips (21).

7. Compressor, It is characterized in that The compressor comprises the adaptive sealer according to any one of claims 1-6.

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