Efficient powder leakage prevention sealing structure of rotating machine

Abstract

The utility model discloses an efficient powder leakage prevention rotating machine sealing structure which comprises a connecting shaft, a static ring is arranged at the top end of the connecting shaft, a movable ring is arranged in the static ring, sealing filler is arranged between the movable ring and the static ring, and an oil injection hole is formed in the surface of one side of the static ring. According to the utility model, a floating sealing structure can be formed by using the static ring, the movable ring and the sealing filler between the static ring and the movable ring, so that the connecting shaft can be sealed, the problem of powder leakage at the shaft end of the roller screen is solved, the phenomenon of coal powder accumulation is eliminated, and the potential fire safety hazard is reduced; compared with a traditional felt sealing structure, the floating sealing structure is easy to maintain, only lubricating grease needs to be supplemented regularly, the maintenance workload is reduced, the dynamic and static separated floating sealing structure is adopted, a high-abrasion-resistant material is combined with the maintenance mode of regular grease supplementing, the problems that the traditional felt sealing structure is prone to abrasion and powder leakage are effectively solved, and the service life is prolonged. And the method has relatively high popularization value and practicability.

Description

Technical Field

[0001] This utility model relates to the field of sealing device technology, and in particular to a high-efficiency anti-leakage powder transfer machine sealing structure. Background Technology

[0002] In coal conveying systems, roller screens are one of the key pieces of equipment used for screening coal. Traditional roller screen shaft end seals typically use felt seals.

[0003] However, felt seals have the following problems: Felt seals are static friction seals, which make it easy for coal dust to enter the sealing area, leading to increased wear and subsequent dust leakage. Secondly, due to the wear of the felt seals, the felts need to be replaced frequently after the equipment has been running for a period of time, which increases the maintenance workload. The leaked coal dust will accumulate at the bearing housing, affecting the normal operation of the equipment and may even cause fire safety hazards. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a highly efficient anti-leakage powder transfer machine sealing structure, which has the advantages of good sealing effect and reduced powder leakage, thereby solving the problems mentioned in the background technology.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a high-efficiency anti-leakage powder transfer machine sealing structure, including a connecting shaft, a stationary ring at the top of the connecting shaft, a rotating ring in the stationary ring, a sealing filler between the rotating ring and the stationary ring, an oil injection hole on one side surface of the stationary ring, an oil nozzle between the stationary ring and the rotating ring, a shaft seal ring between the connecting shaft and the stationary ring, and a pressure cap on one side of the top surface of the stationary ring.

[0006] Through the above technical solution, by using stationary and rotating rings, and by using sealing packing between the stationary and rotating rings, a floating sealing structure can be formed, thereby sealing the connecting shaft, solving the problem of powder leakage at the end of the roller screen shaft, eliminating the accumulation of coal powder, reducing fire safety hazards, and compared with traditional felt seals, the floating sealing structure is simple to maintain, requiring only periodic replenishment of grease, reducing maintenance workload.

[0007] Preferably, a dustproof ring is provided between the stationary ring and the connecting shaft, and the dustproof ring is matched with the connecting shaft and the stationary ring.

[0008] The above technical solution, in particular, uses a dustproof ring to block external dust, reducing the amount of dust entering between the connecting shaft and the floating seal structure, thus ensuring its normal operation.

[0009] Preferably, the stationary ring, the rotating ring, and the sealing packing form a floating sealing structure.

[0010] The above technical solution, by adopting a floating sealing structure that separates static and dynamic components, combined with high wear-resistant materials and regular grease replenishment, effectively solves the problems of easy wear and powder leakage in traditional felt seals, and has high promotional value and practicality.

[0011] Preferably, the rotating ring and the stationary ring are matched, and the rotating ring and the stationary ring are made of a highly wear-resistant material.

[0012] The above technical solutions improve the reliability and service life of the stationary and dynamic rings, ensuring long-term operation of the equipment.

[0013] Preferably, the sealing filler is a high-temperature resistant and wear-resistant grease.

[0014] The above technical solution uses high-temperature resistant and wear-resistant grease for sealing and filling. The grease is replenished regularly through the grease nipple to ensure the reliability and service life of the seal.

[0015] Preferably, the oil injection hole corresponds to the oil nozzle.

[0016] The above technical solution allows grease to be added to the grease fitting through the oil injection hole, enabling the grease to enter the sealing packing between the rotating ring and the stationary ring.

[0017] Compared with the prior art, this utility model provides a highly efficient anti-leakage sealing structure for powder transfer machines, which has the following beneficial effects:

[0018] (1) In this utility model, by using the stationary ring and the rotating ring, and by using the sealing packing between the stationary ring and the rotating ring, a floating sealing structure can be formed, thereby sealing the connecting shaft, solving the problem of powder leakage at the end of the roller screen shaft, eliminating the phenomenon of coal powder accumulation, reducing fire safety hazards, and compared with the traditional felt seal, the floating sealing structure is easy to maintain, only requiring regular replenishment of grease, reducing maintenance workload.

[0019] (2) In this utility model, by adopting a floating sealing structure that separates static and dynamic components, combined with high wear-resistant materials and regular grease replenishment, the problem of easy wear and powder leakage of traditional felt seals is effectively solved, which has high promotion value and practicality. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1This is a schematic diagram of the high-efficiency anti-leakage powder transfer machine sealing structure proposed in this utility model;

[0022] Figure 2 This is a schematic diagram of the stationary and dynamic ring structures of the high-efficiency anti-leakage powder transfer machine sealing structure proposed in this utility model;

[0023] Figure 3 This is a cross-sectional view of the stationary and dynamic rings of the high-efficiency anti-leakage powder transfer machine sealing structure proposed in this utility model.

[0024] Legend:

[0025] 1. Connecting shaft; 2. Stationary ring; 3. Rotary ring; 4. Oil injection hole; 5. Pressure cap; 6. Dustproof ring; 7. Shaft seal ring; 8. Oil nozzle; 9. Sealing packing. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "joined" should be interpreted broadly, 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 an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0028] Please refer to Figure 1-3The high-efficiency anti-leakage sealing structure for the roller screen includes a connecting shaft 1, a stationary ring 2 at the top of the connecting shaft 1, a rotating ring 3 within the stationary ring 2, a sealing filler 9 between the rotating ring 3 and the stationary ring 2, an oil injection hole 4 on one side surface of the stationary ring 2, an oil nozzle 8 between the stationary ring 2 and the rotating ring 3, a shaft seal ring 7 between the connecting shaft 1 and the stationary ring 2, and a pressure cap 5 on one side of the top surface of the stationary ring 2. Through the use of the stationary ring 2 and the rotating ring 3, and the sealing filler 9 between them, a floating sealing structure is formed, thereby sealing the connecting shaft 1, solving the problem of powder leakage at the end of the roller screen shaft, eliminating coal powder accumulation, reducing fire safety hazards, and compared to traditional felt seals, the floating sealing structure is simple to maintain, requiring only periodic replenishment of lubricating grease, reducing maintenance workload.

[0029] In one embodiment, a dustproof ring 6 is provided between the stationary ring 2 and the connecting shaft 1, and the dustproof ring 6 matches the connecting shaft 1 and the stationary ring 2. The use of the dustproof ring 6 can block external dust, reduce the amount of dust entering between the connecting shaft 1 and the floating seal structure, and maintain its normal operation.

[0030] In one embodiment, the stationary ring 2, the dynamic ring 3, and the sealing packing 9 form a floating sealing structure. By adopting a floating sealing structure that separates the static and dynamic components, combined with high wear-resistant materials and regular grease replenishment, the problems of easy wear and powder leakage of traditional felt seals are effectively solved, which has high promotion value and practicality.

[0031] In one embodiment, the rotating ring 3 and the stationary ring 2 are matched. The rotating ring 3 and the stationary ring 2 are made of highly wear-resistant materials, which improves the reliability and service life of the stationary ring 2 and the rotating ring 3, and ensures long-term operation of the equipment.

[0032] In one embodiment, the sealing filler 9 is a high-temperature resistant and wear-resistant grease. The sealing filler 9 uses a high-temperature resistant and wear-resistant grease, and the grease is replenished periodically through the grease nipple 8 to ensure the reliability and service life of the seal.

[0033] In one embodiment, the oil injection hole 4 corresponds to the grease nipple 8, wherein grease can be added to the grease nipple 8 by using the oil injection hole 4, so that the grease can enter the sealing packing 9 between the rotating ring 3 and the stationary ring 2.

[0034] Working principle:

[0035] In use, the floating seal structure composed of stationary ring 2 and moving ring 3 is fixedly installed on the connecting shaft 1 to seal the connecting shaft 1. The use of oil injection hole 4 allows grease to be injected into the floating seal structure, effectively solving the problems of easy wear and powder leakage of traditional felt seals. It has high promotion value and practicality. The use of dustproof ring 6 can block external dust, reducing the amount of dust entering between the connecting shaft 1 and the floating seal structure, and maintaining its normal operation.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high-efficiency anti-leakage powder transfer machine sealing structure, including a connecting shaft (1), characterized in that, The top of the connecting shaft (1) is provided with a stationary ring (2), and a moving ring (3) is provided in the stationary ring (2). A sealing packing (9) is provided between the moving ring (3) and the stationary ring (2). An oil injection hole (4) is provided on one side surface of the stationary ring (2). An oil nozzle (8) is provided between the stationary ring (2) and the moving ring (3). A shaft seal ring (7) is provided between the connecting shaft (1) and the stationary ring (2). A pressure cap (5) is provided on one side of the top surface of the stationary ring (2).

2. The high-efficiency anti-leakage powder transfer machine sealing structure according to claim 1, characterized in that, A dustproof ring (6) is provided between the stationary ring (2) and the connecting shaft (1), and the dustproof ring (6) is matched with the connecting shaft (1) and the stationary ring (2).

3. The high-efficiency anti-leakage powder transfer machine sealing structure according to claim 1, characterized in that, The stationary ring (2), the moving ring (3), and the sealing packing (9) form a floating sealing structure.

4. The high-efficiency anti-leakage powder transfer machine sealing structure according to claim 1, characterized in that, The moving ring (3) and the stationary ring (2) are matched, and the moving ring (3) and the stationary ring (2) are made of high wear-resistant material.

5. The high-efficiency anti-leakage powder transfer machine sealing structure according to claim 1, characterized in that, The sealing filler (9) is a high-temperature resistant and wear-resistant grease.

6. The high-efficiency anti-leakage powder transfer machine sealing structure according to claim 1, characterized in that, The oil injection hole (4) corresponds to the oil nozzle (8).

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