Sealing structure of pulverizer

Abstract

The utility model relates to the technical field of crushers, in particular to a crusher sealing structure which comprises an impeller shaft, a bearing sleeved on one side of the outer wall of the impeller shaft, a shaft sleeve arranged on one side of the bearing, a mechanical seal sleeved on the outer wall of the shaft sleeve, and a transition disc fixedly sleeved on the outer wall of the mechanical seal. One end of the transition disc is clamped to the adjusting ring, and a first air inlet channel is formed in one side of the outer wall of the transition disc. The mechanical seal is connected with the transition disc and then is matched with the adjusting ring for sealing, and the filter disc is provided with the first gas inlet channel, so that pressure gas can be introduced through the first gas inlet channel in the using process, and gas with certain pressure can be introduced from the outside to the inner side; therefore, internal gas is prevented from entering along the gap to influence the bearing, the protection effect is improved, the service life of the bearing is prolonged, and a traditional crusher is suitable for the working condition of crushing under pressure.

Description

Technical Field

[0001] This utility model relates to the field of crusher technology, specifically a crusher sealing structure. Background Technology

[0002] With economic development and social progress, continuously improving production efficiency has become an inevitable trend and a social consensus. Various powder processing equipment are non-general-purpose mechanical equipment, applied to specific working conditions. This type of equipment is generally simple in structure and easy to use. As people's living and working conditions improve, new requirements are being placed on the working environment. The harsh working environment during powder product production has received significant attention, and controlling dust generation and protecting the personal safety of production workers has become increasingly important.

[0003] A pulverizer is an indispensable piece of machinery in the production of powder products. A pulverizer uses a high-speed rotating impeller to crush materials entering the pulverizer, thereby obtaining a product with the desired particle size. The sealing performance of the impeller cavity, and the sealing performance between the impeller cavity and the impeller shaft, directly affects the quality of the working environment. In short, good sealing means less dust in the environment, resulting in a better working environment; poor sealing means more dust in the environment, resulting in a worse working environment.

[0004] Traditional crusher impeller chambers often use simple labyrinth seals. Under pressure, dust can enter through the gaps, affecting the bearings and thus their service life, making the equipment unable to meet the requirements of long-term operation. Therefore, we propose a new crusher sealing structure. Utility Model Content

[0005] The purpose of this invention is to provide a sealing structure for a crusher, which solves the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a pulverizer sealing structure, including an impeller shaft, wherein a bearing is fitted on one side of the outer wall of the impeller shaft;

[0007] A bushing is provided on one side of the bearing. The bushing is fixedly fitted onto the outer wall of the impeller shaft. A mechanical seal is fitted onto the outer wall of the bushing. A transition plate is fixedly fitted onto the outer wall of the mechanical seal. One end of the transition plate is snapped into an adjusting ring. A first air intake channel is provided on one side of the outer wall of the transition plate.

[0008] By adopting the above technical solution, one side of the bearing is first sealed by a mechanical seal in conjunction with a transition plate. During the sealing process, the air source pipe is connected through the first air intake channel, and gas at a certain pressure is introduced from the outside to the inside. This prevents internal gas from entering the bearing through the gaps and affecting it. The gas is blown inward through the gaps, which helps to prevent dust from entering the bearing and thus helps to protect the bearing and extend its service life.

[0009] In a preferred embodiment of the present invention, the mechanical seal includes a fixed part and a rotating part, the rotating part being fixedly fitted with the outer wall of the bushing, and the fixed part being fixedly connected to the inner wall of the transition plate.

[0010] By adopting the above technical solution, it is ensured that the bushing is not affected by the rotation of the impeller shaft.

[0011] In a preferred embodiment of the present invention, the outer wall of the transition plate is provided with a second air intake channel, which extends to the connection between the fixed part and the rotating part of the mechanical seal.

[0012] By adopting the above technical solution, gas can be introduced to the mechanical seal through the second air intake channel, thereby cooling the rotating and fixed parts of the mechanical seal. This protects the mechanical seal and helps to avoid heat accumulation affecting its service life.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] The present application provides a pulverizer sealing structure, which is connected to a mechanical seal and a transition plate and then sealed with an adjusting ring. The filter plate is provided with a first air inlet channel, so that pressurized gas can be introduced through the first air inlet channel during use. The gas is introduced from the outside to the inside, thereby preventing internal gas from entering through gaps and affecting the bearing, improving the protection effect and extending the service life of the bearing.

[0015] The second air intake channel allows gas to be introduced to the mechanical seal, thereby cooling the rotating and stationary parts of the mechanical seal. This protects the mechanical seal and helps prevent heat buildup from affecting its service life. Attached Figure Description

[0016] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0017] Figure 1This is a cross-sectional view of a sealing structure for a crusher according to the present invention.

[0018] In the picture:

[0019] 1. Impeller shaft; 2. Adjusting ring; 3. Shaft sleeve; 4. Transition disc; 5. Mechanical seal; 6. Bearing; 7. Second intake passage; 8. First intake passage. Detailed Implementation

[0020] Please see Figure 1 This utility model provides a technical solution: a pulverizer sealing structure, including an impeller shaft 1, and a bearing 6 is fitted on one side of the outer wall of the impeller shaft 1;

[0021] A bushing 3 is provided on one side of the bearing 6. The bushing 3 is fixedly fitted on the outer wall of the impeller shaft 1. A mechanical seal 5 is fitted on the outer wall of the bushing 3. A transition plate 4 is fixedly fitted on the outer wall of the mechanical seal 5. One end of the transition plate 4 is snapped into the adjusting ring 2. A first air intake channel 8 is opened on one side of the outer wall of the transition plate 4.

[0022] In actual use, the mechanical seal 5, in conjunction with the transition plate 4, first seals one side of the bearing 6. During the sealing process, the air source pipe is connected through the first air intake channel 8, allowing pressurized gas to be introduced into the first air intake channel 8. The gas then enters the gap between the transition plate 4 and the mechanical seal 5, causing the gas to blow outwards along the gap. This helps prevent dust from entering the gap and thus avoids dust affecting the bearing 6, protecting the bearing 6 and extending its service life.

[0023] Furthermore, the mechanical seal 5 includes a fixed part and a rotating part. The rotating part is fixedly fitted with the outer wall of the bushing 3, and the fixed part is fixedly connected to the inner wall of the transition plate 4, thereby ensuring that the bushing 3 is not affected by the rotation of the impeller shaft 1.

[0024] Furthermore, the outer wall of the transition plate 4 is provided with a second air intake channel 7, which extends to the connection between the fixed part and the rotating part of the mechanical seal 5. Gas can be introduced into the mechanical seal 5 through the second air intake channel 7, thereby cooling the rotating part and the fixed part of the mechanical seal 5 with the introduced gas, thus protecting the mechanical seal 5 and helping to avoid heat accumulation affecting the service life of the mechanical seal 5.

[0025] The implementation principle of the pulverizer sealing structure of this application is as follows: First, the mechanical seal 5, in conjunction with the transition plate 4, seals one side of the bearing 6. During the sealing process, the first air inlet channel 8 is connected to the air source pipe, thereby introducing pressurized gas into the first air inlet channel 8. The gas enters the gap between the transition plate 4 and the mechanical seal 5, causing the gas to blow inward along the gap, which helps to prevent dust from entering along the gap and thus prevents dust from affecting the bearing 6, thereby protecting the bearing 6 and extending its service life. In use, the second air inlet channel 7 is connected to the external air source pipe, thereby introducing gas to the mechanical seal 5. The introduced gas can be used to cool the rotating and fixed parts of the mechanical seal 5, thereby protecting the mechanical seal 5 and preventing heat accumulation from affecting the service life of the mechanical seal 5.

[0026] Furthermore, the components included in the pulverizer sealing structure of this utility model are all general standard parts or parts known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. In the idle part of this device, all the above-mentioned electrical components, which refer to power components, electrical components, and the matching monitoring computer and power supply, are connected by wires. The specific connection method should refer to the working principle below, and the electrical connection between each electrical component is completed in the order of operation. The detailed connection method is the well known technology in this field. The following mainly introduces the working principle and process, and will not explain the electrical control.

Claims

1. A pulverizer sealing structure, comprising an impeller shaft (1), characterized in that: A bearing (6) is fitted on one side of the outer wall of the impeller shaft (1); A bushing (3) is provided on one side of the bearing (6). The bushing (3) is fixedly fitted on the outer wall of the impeller shaft (1). A mechanical seal (5) is fitted on the outer wall of the bushing (3). A transition plate (4) is fixedly fitted on the outer wall of the mechanical seal (5). One end of the transition plate (4) is snapped into the adjusting ring (2). A first air intake channel (8) is opened on one side of the outer wall of the transition plate (4).

2. The pulverizer sealing structure according to claim 1, characterized in that: The mechanical seal (5) includes a fixed part and a rotating part. The rotating part is fixedly fitted with the outer wall of the bushing (3), and the fixed part is fixedly connected to the inner wall of the transition plate (4).

3. The pulverizer sealing structure according to claim 2, characterized in that: The outer wall of the transition plate (4) is provided with a second air intake channel (7), which extends to the connection between the fixed part and the rotating part of the mechanical seal (5).

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