Bearing dustproof protection structure under high pressure

Abstract

The utility model discloses a bearing dustproof protection structure under high pressure, which comprises a shaft body, a self-made sealing ring and an impeller, the periphery of the shaft body is provided with a matching part and an external thread, the matching part is in interference fit with a bearing, the self-made sealing ring is sleeved on the matching part and pressed on one side of the bearing, and the impeller is connected with the self-made sealing ring. The shaft body is provided with a self-made sealing ring, a TC framework seal and a self-made dust filter sheet are arranged on one side of the self-made sealing ring, a threaded sleeve matched with external threads is arranged on the side wall of the impeller, a sealing ring is arranged on the periphery of the impeller, and the sealing ring is matched with a sealing cover. Due to the design of the impeller, the shaft body has wind pressure after running, dust is prevented from entering the shaft body, the shaft body, the sealing ring and the sealing cover form an air chamber, air is effectively prevented from entering the shaft body, and a self-made dust filtering piece is arranged behind the impeller and is used for carrying out third blocking and filtering on redundant dust.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing dust prevention, in particular to a bearing dust prevention protection structure under high pressure. Background Art

[0002] The shaft bearings moving in the dusty environment of the tank are prone to dust blowing into the bearings through their seals when the machine is shut down or under positive pressure, causing the bearings to get stuck. In general, the bearing life does not exceed 3 months in the case of powder. One machine has 4 flying knife mixing stations, which requires a lot of maintenance work. It takes 3 hours to repair one station, and the maintenance cost is high. Utility Model Content

[0003] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the name of the utility model of this application to avoid blurring the purpose of this section, the abstract of the specification and the name of the utility model, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0004] In view of the above-mentioned and / or existing problems in the use of the bearing dust protection structure under high pressure, the present utility model is proposed.

[0005] Therefore, the purpose of the utility model is to provide a bearing dust protection structure under high pressure, in which the dust airflow is blocked once by the sealing cover, and the impeller rotates with the shaft. Due to the design of the impeller, the shaft has its own wind pressure after operation to prevent dust from entering, and back-blow the dust, and form an air chamber with the sealing ring and the sealing cover to effectively block the entry of gas. There is a homemade dust filter behind the impeller to perform a third blocking and filtering of excess dust. The filtered air is then blocked by the TC skeleton seal. After the skeleton seal fails, the bearing is isolated by the homemade sealing ring, which has a good dust prevention effect and reduces the maintenance frequency.

[0006] In order to solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0007] A high-pressure bearing dust protection structure, comprising:

[0008] A shaft body, wherein a fitting portion and an external thread are arranged on the outer periphery of the shaft body, and a bearing is interference-fitted on the fitting portion;

[0009] A self-made sealing ring, which is sleeved on the mating part and pressed on one side of the bearing, and a TC skeleton seal and a self-made dust filter are provided on one side of the self-made sealing ring;

[0010] An impeller, wherein a threaded sleeve matching with an external thread is arranged on a side wall of the impeller, a sealing ring is arranged on the outer periphery of the impeller, and the sealing ring is matched with a sealing cover.

[0011] As a preferred solution of the high-pressure bearing dust protection structure described in the utility model, an air chamber is formed between the sealing cover, the sealing ring and the impeller, and the impeller rotates with the shaft.

[0012] As a preferred solution of the high-pressure bearing dust protection structure described in the utility model, the homemade sealing ring is pressed on one side of the bearing, the TC skeleton seal is pressed on one side of the homemade sealing ring, and the homemade dust filter is pressed on one side of the TC skeleton seal.

[0013] As a preferred solution of the high-pressure bearing dust protection structure described in the utility model, the threaded sleeve is pressed on the sealing side of the TC skeleton, and the sealing ring is fitted with the outer ring of the impeller.

[0014] As a preferred solution of the high-pressure bearing dust protection structure described in the utility model, a limiting ring is provided on the side wall of the sealing cover, and the limiting ring is fitted with the inner ring of the sealing ring.

[0015] Compared with the prior art, the utility model has the following beneficial effects: this kind of high-pressure bearing dust-proof protection structure blocks the dust airflow once through the sealing cover, and the impeller rotates with the shaft body. Due to the design of the impeller, the shaft body has its own wind pressure after operation to prevent dust from entering, and back-blows the dust, and forms an air chamber with the sealing ring and the sealing cover to effectively block the entry of gas. There is a homemade dust filter behind the impeller to perform a third blocking and filtering of excess dust. The filtered air is then blocked by the TC skeleton seal. After the skeleton seal fails, the bearing is isolated by the homemade sealing ring, which has a good dust-proof effect and reduces the maintenance frequency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the implementation of the utility model, the utility model will be described in detail below in combination with the drawings and detailed implementation. Obviously, the drawings described below are only some implementations of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0017] Figure 1 This is a schematic diagram of the overall structure of a high-pressure bearing dust protection structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the cross-sectional structure of a bearing dust protection structure under high pressure according to the utility model;

[0019] Figure 3 The utility model is a schematic diagram of the explosion part structure of a bearing dust protection structure under high pressure.

[0020] 100, shaft body; 110, mating part; 120, external thread; 130, bearing; 200, self-made sealing ring; 210, TC skeleton seal; 220, self-made dust filter; 300, impeller; 310, threaded sleeve; 320, sealing ring; 330, sealing cover; 331, limit ring. DETAILED DESCRIPTION

[0021] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0022] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the implementation of the present invention in detail, for the sake of convenience, the cross-sectional diagram showing the device structure will not be partially enlarged at a general scale, and the schematic diagram is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0023] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0024] The utility model provides a dust-proof protection structure for a bearing under high pressure, in which a sealing cover blocks dust airflow once, and an impeller rotates with a shaft body. Due to the design of the impeller, the shaft body has its own wind pressure after operation to prevent dust from entering, and back-blows the dust, and forms an air chamber with a sealing ring and a sealing cover to effectively block gas from entering. A self-made dust filter is arranged behind the impeller to perform a third blocking and filtering of excess dust, and the filtered air is then blocked by a TC skeleton seal. After the skeleton seal fails, the bearing is isolated by a self-made sealing ring, so that the dust-proof effect is good and the maintenance frequency is reduced.

[0025] Figure 1-Figure 3 The structure diagram of an embodiment of a high pressure bearing dust protection structure of the utility model is shown. Figure 1-Figure 3 The present embodiment is a high-pressure bearing dust protection structure, the main body of which includes a shaft body 100, a homemade sealing ring 200 and an impeller 300.

[0026] The shaft body 100 cooperates with the threaded sleeve 310 through the external thread 120 to facilitate the disassembly and assembly of the impeller 300. The matching portion 110 is used to install the bearing 130. Specifically, the outer periphery of the shaft body 100 is provided with the matching portion 110 and the external thread 120, and the matching portion 110 is interference-fitted with the bearing 130.

[0027] The self-made sealing ring 200 is used to shield the bearing 130 and prevent dust from entering the bearing 130. The TC skeleton seal 210 and the self-made dust filter 220 are used to protect against dust. Specifically, the self-made sealing ring 200 is sleeved on the matching portion 110 and pressed on one side of the bearing 130. The TC skeleton seal 210 and the self-made dust filter 220 are provided on one side of the self-made sealing ring 200. In this embodiment, the self-made sealing ring 200 is pressed on one side of the bearing, the TC skeleton seal 210 is pressed on one side of the self-made sealing ring 200, and the self-made dust filter 220 is pressed on one side of the TC skeleton seal 210.

[0028] The impeller 300 rotates with the shaft 100. Due to the design of the impeller 300, the shaft 100 has its own wind pressure after operation to prevent dust from entering, back-blowing the dust, and forming an air chamber with the sealing ring 320 and the sealing cover 330 to effectively block the entry of gas. There is a self-made dust filter 220 behind the impeller 300 to perform a third blocking and filtering of excess dust. The filtered air is then blocked by the TC skeleton seal 210. When the skeleton seal fails, the self-made seal ring 200 isolates the bearing 130. The side wall of the impeller 300 is provided with A threaded sleeve 310 cooperates with the external thread 120, and a sealing ring 320 is arranged on the outer periphery of the impeller 300. The sealing ring 320 is cooperated with a sealing cover 330. In this embodiment, an air chamber is formed between the sealing cover 330, the sealing ring 320 and the impeller 300. The impeller 300 rotates with the shaft 100, and the threaded sleeve 310 is pressed on one side of the TC skeleton seal 210. The sealing ring 320 is fitted with the outer ring of the impeller 300. A limiting ring 331 is arranged on the side wall of the sealing cover 330, and the limiting ring 331 is fitted with the inner ring of the sealing ring.

[0029] Combination Figure 1-Figure 3 The present embodiment is a high-pressure bearing dust protection structure. The specific use process is as follows: when the flying knife motor is started, the dust in the tank will enter the bearing position through the seal at the shaft end. The sealing cover 330 blocks the dust airflow once, and the impeller 300 rotates with the shaft body 100. Due to the design of the impeller 300, the shaft body 100 has its own wind pressure after operation to prevent dust from entering, and back-blows the dust, and forms an air chamber with the sealing ring 320 and the sealing cover 330 to effectively block the entry of gas. There is a self-made dust filter 220 behind the impeller 300 to perform a third blocking and filtering of excess dust. The filtered air is then blocked by the TC skeleton seal 210. After the skeleton seal fails, the self-made sealing ring 200 isolates the bearing 130, which has a good dust prevention effect and reduces the maintenance frequency.

[0030] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A dust-proof protection structure for a bearing under high pressure, characterized in that: include: A shaft body (100), wherein a fitting portion (110) and an external thread (120) are provided on the outer periphery of the shaft body (100), and the fitting portion (110) is interference-fitted with a bearing (130); A self-made sealing ring (200), wherein the self-made sealing ring (200) is sleeved on the matching portion (110) and pressed against one side of the bearing (130), and a TC skeleton seal (210) and a self-made dust filter (220) are provided on one side of the self-made sealing ring (200); An impeller (300) is provided with a threaded sleeve (310) on the side wall of the impeller (300) and matched with an external thread (120). A sealing ring (320) is provided on the outer periphery of the impeller (300), and the sealing ring (320) is matched with a sealing cover (330).

2. A high pressure bearing dust protection structure according to claim 1, characterized in that: An air chamber is formed between the sealing cover (330), the sealing ring (320) and the impeller (300), and the impeller (300) rotates along with the shaft (100).

3. A high pressure bearing dust protection structure according to claim 2, characterized in that: The self-made sealing ring (200) is pressed on one side of the bearing, the TC skeleton seal (210) is pressed on one side of the self-made sealing ring (200), and the self-made dust filter (220) is pressed on one side of the TC skeleton seal (210).

4. A high pressure bearing dust protection structure according to claim 3, characterized in that: The threaded sleeve (310) is pressed against one side of the TC skeleton seal (210), and the sealing ring (320) is fitted with the outer ring of the impeller (300).

5. A high pressure bearing dust protection structure according to claim 4, characterized in that: A limiting ring (331) is provided on the side wall of the sealing cover (330), and the limiting ring (331) is fitted with the inner ring of the sealing ring.

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