Spindle seal support mechanism against dust intrusion

Abstract

The utility model provides a kind of main shaft sealing support mechanism of dust invasion prevention, including main shaft, bearing seat and the bearing between the setting two, the main shaft is fixedly connected with rotary sealing member, and the bearing seat is fixedly connected with fixed sealing member.The utility model has the advantages that rotary sealing member cooperates with fixed sealing member, forms sealing structure, and isolates dust.Meanwhile, most dust is isolated outside fixed sealing member by protective cover, reduces the way of dust moving to sealing member, reduces the working pressure of rotary sealing member and fixed sealing member.When the main shaft rotates, wind wheel drives gas flow, generates airflow away from rotary sealing member and fixed sealing member at the main shaft, and the airflow drives dust away from sealing member, further reduces the working pressure of sealing member.Meanwhile, dust entering protective cover through the gap between protective cover and main shaft is also sucked out, improving sealing effect.Dust is isolated by multiple structures, which is conducive to ensuring the service life of bearing.

Description

Technical Field

[0001] This utility model relates to the field of bearing technology, and in particular to a spindle sealing support mechanism for preventing dust intrusion. Background Technology

[0002] A ball mill is a key piece of equipment that uses grinding media (such as steel balls or steel rods) loaded inside a rotating cylinder to refine, mix, and grind materials. It is widely used in mining, metallurgy, chemical, building materials, power, and environmental protection industries. Its core function is to crush various ores, chemical raw materials, and building materials to the required particle size to meet the needs of subsequent processing or extraction.

[0003] The main shaft of the ball mill is connected to the machine body through bearings. When the ball mill is working, a certain amount of dust will be generated in the environment. The end of the ball mill main shaft is easily invaded by dust. Dust intrusion into the bearing will cause bearing wear and affect the bearing life. Utility Model Content

[0004] The purpose of this invention is to at least solve one of the aforementioned technical defects.

[0005] Therefore, one objective of this utility model is to provide a spindle sealing support mechanism to prevent dust intrusion, so as to solve the problems mentioned in the background art and overcome the shortcomings of the prior art.

[0006] To achieve the above objectives, one embodiment of the present invention provides a spindle sealing support mechanism to prevent dust intrusion, including a spindle, a bearing housing, and a bearing disposed between the two. A rotary seal is fixedly connected to the spindle, and a fixed seal is fixedly connected to the bearing housing. A fan wheel that can rotate with the spindle is disposed on the outside of the rotary seal on the spindle, and a protective cover is disposed on the outside of the fixed seal. The protective cover is sleeved on the spindle.

[0007] The above technical solution employs a rotary seal and a fixed seal to form a sealing structure that isolates dust. Simultaneously, a protective cover outside the fixed seal isolates most dust, reducing the pathways for dust to reach the seal and lowering the working pressure on both the rotary and fixed seals. When the main shaft rotates, the impeller drives airflow, creating an airflow away from the rotary and fixed seals. This airflow carries dust away from the seals, further reducing their working pressure. Simultaneously, dust entering the protective cover through the gap between the protective cover and the main shaft is also sucked out, improving the sealing effect. This multi-layered dust isolation helps ensure the bearing's service life.

[0008] Preferably, in any of the above embodiments, the rotary seal includes a first connecting seat fixedly connected to the spindle and a first movable tooth disposed on the first connecting seat, and the fixed seal includes a fixed seat fixedly connected to the bearing seat and a first fixed tooth disposed on the fixed seat.

[0009] The above technical solution is adopted: the first moving tooth and the first fixed tooth form a labyrinth sealing structure, which makes the dust flow path longer and more tortuous, resulting in a better sealing effect.

[0010] Preferably, in any of the above embodiments, the rotary seal further includes a second connecting seat fixedly connected to the main shaft and a second moving tooth disposed on the second connecting seat, and the fixed seal further includes a second fixing tooth disposed on the fixed seat.

[0011] The above technical solution involves two sets of sealing teeth working together to form a double labyrinth seal structure, which can further improve the sealing effect.

[0012] Preferably, in any of the above schemes, the first moving tooth and the first fixed tooth adopt a horizontal tooth structure, and the second moving tooth and the second fixed tooth adopt a vertical tooth structure.

[0013] The above technical solution uses two sealing structures to seal in different directions, which extends the dust movement path and requires it to turn, making it almost impossible for dust to pass through, resulting in a better sealing effect.

[0014] Preferably, the end of the main shaft is provided with a threaded head, and the impeller is threaded onto the threaded head.

[0015] The above technical solution facilitates the installation of the impeller and protective cover by using a threaded head. First, the protective cover is fitted onto the main shaft, and then the impeller is installed on the threaded head, thus completing the installation conveniently.

[0016] Preferably, as described in any of the above schemes, a protective frame is provided on the outer side of the wind turbine.

[0017] The above technical solution provides physical protection for the wind turbine, preventing damage caused by accidental contact with foreign objects.

[0018] Preferably, the protective cover comprises two halves, left and right, which are fixedly connected together by a connecting plate and bolts, and the protective cover has an inclined surface on the side near the wind turbine.

[0019] The above technical solution employs a protective cover consisting of two halves, left and right, which can be spliced ​​together to install on the outside of the fixed sealing component. A slope is provided on one side of the protective cover to guide airflow, allowing gas and dust to be more smoothly carried away by the impeller.

[0020] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows:

[0021] 1. This dust-proof spindle sealing support mechanism incorporates a rotating seal, a fixed seal, an impeller, and a protective cover. The rotating and fixed seals work together to form a sealing structure that isolates dust. Simultaneously, the protective cover, located outside the fixed seal, isolates most dust, reducing the pathways for dust to reach the seals and lowering the working pressure on the rotating and fixed seals. When the spindle rotates, the impeller drives airflow, creating an airflow away from the rotating and fixed seals. This airflow carries dust away from the seals, further reducing their working pressure. Dust entering the protective cover through the gap between the protective cover and the spindle is also sucked out, improving the sealing effect. This multi-layered dust isolation helps ensure the lifespan of the bearings.

[0022] 2. This dust-proof spindle sealing support mechanism features a labyrinth seal structure formed by the first moving tooth and the first fixed tooth. This results in a longer and more tortuous dust flow path, leading to a better sealing effect. The two sets of sealing teeth work together to form two labyrinth seal structures, further enhancing the sealing performance. The two seal structures seal in different directions, extending the dust's movement path and requiring it to change direction, making it almost impossible for dust to pass through, thus achieving an even better sealing effect.

[0023] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0024] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0025] Figure 1 This is a schematic diagram of the structure of one embodiment of the present utility model;

[0026] Figure 2 This is a schematic diagram of another embodiment of the present invention;

[0027] Figure 3 This is a partial structural schematic diagram of the present invention.

[0028] In the diagram: 1-Main shaft, 2-Bearing housing, 3-Bearing, 4-Rotary seal, 401-First connecting seat, 402-Second connecting seat, 403-First moving tooth, 404-Second moving tooth, 5-Fixed seal, 501-Fixed seat, 502-First fixed tooth, 503-Second fixed tooth, 6-Wind impeller, 7-Protective cover, 8-Threaded head, 9-Connecting plate. Detailed Implementation

[0029] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] like Figures 1-3 As shown, this utility model includes a main shaft 1, a bearing seat 2, and a bearing 3 disposed between the two. A rotary seal 4 is fixedly connected to the main shaft 1, and a fixed seal 5 is fixedly connected to the bearing seat 2. A fan wheel 6 that can rotate with the main shaft 1 is disposed on the outside of the rotary seal 4 on the main shaft 1. A protective cover 7 is disposed on the outside of the fixed seal 5 and is sleeved on the main shaft 1.

[0032] The rotating seal 4 and the fixed seal 5 cooperate to form a sealing structure, isolating dust. Simultaneously, the protective cover 7, located outside the fixed seal 5, isolates most dust, reducing the pathways for dust to reach the seals and lowering the working pressure on the rotating seal 4 and fixed seal 5. When the main shaft 1 rotates, the impeller 6 drives gas flow, creating an airflow at the main shaft 1 that moves away from the rotating seal 4 and fixed seal 5. This airflow carries dust away from the seals, further reducing their working pressure. Simultaneously, dust entering the protective cover 7 through the gap between the protective cover 7 and the main shaft 1 is also sucked out, improving the sealing effect. The multi-layered structure isolates dust, helping to ensure the service life of the bearings.

[0033] Example 1: The rotary seal 4 includes a first connecting seat 401 fixedly connected to the spindle 1 and a first moving tooth 403 disposed on the first connecting seat 401. The fixed seal 5 includes a fixed seat 501 fixedly connected to the bearing seat 2 and a first fixed tooth 502 disposed on the fixed seat 501. The rotary seal 4 also includes a second connecting seat 402 fixedly connected to the spindle 1 and a second moving tooth 404 disposed on the second connecting seat 402. The fixed seal 5 also includes a second fixed tooth 503 disposed on the fixed seat 501.

[0034] Specifically, the first moving tooth 403 and the first fixed tooth 502 form a labyrinth seal structure, resulting in a longer and more tortuous dust flow path and a better sealing effect. The two sets of sealing teeth work together to form two labyrinth seal structures, which can further improve the sealing effect.

[0035] Example 2: The first moving tooth 403 and the first fixed tooth 502 adopt a horizontal tooth structure, while the second moving tooth 404 and the second fixed tooth 503 adopt a vertical tooth structure. A threaded head 8 is provided at the end of the main shaft 1, and the impeller 6 is threadedly connected to the threaded head 8.

[0036] Specifically: the two sealing structures seal in different directions, extending the dust's movement path and requiring it to change direction, making it almost impossible for dust to pass through, resulting in a better sealing effect. The threaded head 8 facilitates the installation of the impeller 6 and the protective cover 7. First, the protective cover 7 is fitted onto the main shaft 1, and then the impeller 6 is installed on the threaded head 8, thus completing the installation easily.

[0037] Example 3: A protective frame is provided on the outside of the wind turbine 6. The protective cover 7 includes two half-covers, left and right, which are fixed together by connecting plates 9 and bolts. The protective cover 7 has a sloping surface on the side near the wind turbine 6.

[0038] Specifically: The protective frame provides physical protection for the impeller 6, preventing damage to the impeller 6 from accidental contact with foreign objects. The protective cover 7 consists of two halves, left and right, allowing it to be installed on the outside of the fixed sealing component 5 by splicing the left and right halves together. One side of the protective cover 7 is provided with a slope to guide the airflow, allowing gas and dust to be carried away by the impeller 6 more smoothly.

[0039] The working principle of this utility model is as follows:

[0040] S1. The rotary seal 4 and the fixed seal 5 work together to form a sealing structure to isolate dust.

[0041] S2, the protective cover 7 isolates most of the dust on the outside of the fixed seal 5, reduces the path of dust to the seal, and reduces the working pressure of the rotating seal 4 and the fixed seal 5.

[0042] S3. When the main shaft 1 rotates, the impeller 6 drives the gas flow, creating an airflow at the main shaft 1 that moves away from the rotating seal 4 and the fixed seal 5. The airflow carries dust away from the seals, further reducing the working pressure on the seals. At the same time, dust that enters the protective cover 7 through the gap between the protective cover 7 and the main shaft 1 will also be sucked out, improving the sealing effect.

[0043] Compared with the prior art, the present invention has the following advantages:

[0044] 1. This dust-proof spindle sealing support mechanism incorporates a rotating seal 4, a fixed seal 5, an impeller 6, and a protective cover 7. The rotating seal 4 and the fixed seal 5 work together to form a sealing structure, isolating dust. Simultaneously, the protective cover 7, located outside the fixed seal 5, isolates most dust, reducing the pathways for dust to reach the seal and lowering the working pressure on the rotating and fixed seals 4 and 5. When the spindle 1 rotates, the impeller 6 drives airflow, creating an airflow away from the rotating and fixed seals 4 and 5. This airflow carries dust away from the seals, further reducing their working pressure. Simultaneously, dust entering the protective cover 7 through the gap between it and the spindle 1 is also sucked out, improving the sealing effect. The multi-layered dust isolation helps ensure the bearing's service life.

[0045] 2. In this dust-proof spindle sealing support mechanism, the first moving tooth 403 and the first fixed tooth 502 form a labyrinth seal structure, resulting in a longer and more tortuous dust flow path and a better sealing effect. The two sets of sealing teeth work together to form two labyrinth seal structures, further improving the sealing effect. The two seal structures seal in different directions, extending the dust's movement path and requiring it to change direction, making it almost impossible for dust to pass through, thus achieving a better sealing effect.

Claims

1. A dust-proof spindle sealing support mechanism, comprising a spindle (1), a bearing housing (2), and a bearing (3) disposed between the two; characterized in that, A rotary seal (4) is fixedly connected to the main shaft (1), a fixed seal (5) is fixedly connected to the bearing seat (2), a fan wheel (6) that can rotate with the main shaft (1) is provided on the outside of the rotary seal (4) on the main shaft (1), and a protective cover (7) is provided on the outside of the fixed seal (5), and the protective cover (7) is sleeved on the main shaft (1).

2. The spindle sealing support mechanism for preventing dust intrusion as described in claim 1, characterized in that: The rotary seal (4) includes a first connecting seat (401) fixedly connected to the main shaft (1) and a first moving tooth (403) disposed on the first connecting seat (401). The fixed seal (5) includes a fixed seat (501) fixedly connected to the bearing seat (2) and a first fixed tooth (502) disposed on the fixed seat (501).

3. The spindle sealing support mechanism for preventing dust intrusion as described in claim 2, characterized in that: The rotary seal (4) further includes a second connecting seat (402) fixedly connected to the main shaft (1) and a second moving tooth (404) disposed on the second connecting seat (402). The fixed seal (5) further includes a second fixed tooth (503) disposed on the fixed seat (501).

4. The spindle sealing support mechanism for preventing dust intrusion as described in claim 3, characterized in that: The first moving tooth (403) and the first fixed tooth (502) adopt a horizontal tooth structure, while the second moving tooth (404) and the second fixed tooth (503) adopt a vertical tooth structure.

5. The spindle sealing support mechanism for preventing dust intrusion as described in claim 4, characterized in that: The end of the main shaft (1) is provided with a threaded head (8), and the impeller (6) is threadedly connected to the threaded head (8).

6. The spindle sealing support mechanism for preventing dust intrusion as described in claim 5, characterized in that: The wind turbine (6) is provided with a protective frame on its outer side.

7. The spindle sealing support mechanism for preventing dust intrusion as described in claim 4, characterized in that: The protective cover (7) includes two half-covers, left and right, which are fixed together by connecting plates (9) and bolts. The protective cover (7) has a slope on the side near the wind turbine (6).

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