Rear-mounted detachable rotating shaft sealing structure

Abstract

The utility model relates to a sealing structure, and provides a rear-mounted detachable rotating shaft sealing structure which comprises a bearing, a wall surface where the bearing is located, a rotating shaft penetrating through the bearing, a pair of bottom plates arranged on the two sides of the rotating shaft respectively, a pair of sealing covers arranged on the two sides of the rotating shaft respectively, and a pair of clamping plates clamped on the two sides of the rotating shaft respectively. The air supply device is communicated with one of the sealing covers; the bottom plate is detachably connected with the wall surface, the sealing cover is detachably connected with the bottom plate, and the sealing cover is in sealing sliding connection with the clamping plate; the pair of sealing covers is enclosed to form a closed structure. The rear-mounted detachable rotating shaft sealing structure disclosed by the utility model not only can well seal the bearing and prevent dust from entering, but also can be conveniently assembled and disassembled on the existing equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing devices, and more particularly, to a rear-mounted and detachable rotating shaft sealing structure. Background Art

[0002] As the basic raw material for aluminum electrolysis production, alumina is often transported by mechanical conveying equipment such as bucket elevators, belt conveyors, and screw conveyors during production and use. Metallurgical-grade alumina has small particles and high hardness, and will be scattered in large quantities inside the equipment during equipment operation.

[0003] Most of the above-mentioned equipment usually has a power structure, such as motors, rotating shafts, etc. For the fixed parts of the rotating shafts, bearings are usually used for support. However, the sealing performance of the bearings themselves is not good, and fine alumina particles are very likely to enter the bearings and the connection between the bearings and the rotating shafts, thereby accelerating the wear of the bearings, causing material leakage and flying, and the leaked alumina entering components such as bearing seats will cause equipment damage, greatly increasing the maintenance cost. Moreover, for equipment that has been installed and put into use, adding additional sealing structures to the bearings of the equipment is also a considerable workload, which also involves the disassembly and assembly of the equipment, shutdown, etc., and will significantly slow down the production cycle. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a rear-mounted and detachable rotating shaft sealing structure, which can not only seal the bearing well to prevent dust from entering, but also be conveniently installed and disassembled on existing equipment.

[0005] The embodiment of the utility model is realized by the following technical solutions: The rear-mounted and detachable rotating shaft sealing structure of the utility model includes a bearing, the wall surface where the bearing is located, a rotating shaft passing through the bearing, including a pair of bottom plates respectively arranged on both sides of the rotating shaft, a pair of sealing covers respectively arranged on both sides of the rotating shaft, and a pair of clamping plates respectively clamped on both sides of the rotating shaft; and a gas supply device communicated with one of the sealing covers; the bottom plate is detachably connected to the wall surface, the sealing cover is detachably connected to the bottom plate, and the sealing cover is hermetically slidably connected to the clamping plate; a closed structure is formed by enclosing the pair of sealing covers.

[0006] Further, a plurality of first connection holes are provided on the bottom plate, and a plurality of threaded holes are provided on the wall surface. The first bolts pass through the first connection holes and are threadedly connected to the threaded holes.

[0007] Further, a plurality of Z-shaped pressing pieces are provided on the bottom plate, and second connection holes are provided on the pressing pieces; the second connection holes coincide with the first connection holes, and the first bolts pass through the second connection holes; one end of the pressing piece away from the second connection hole presses on the sealing cover.

[0008] Further, the sealing cover includes a connecting plate attached to the bottom plate, and a cover body fixedly provided on one side of the connecting plate away from the bottom plate; the pressing piece is pressed on the connecting plate.

[0009] Further, a plurality of first sealing plates are provided on the outer wall of the clamping plate along the axial direction of the rotating shaft; a plurality of second sealing plates are provided on the inner wall of the cover body along the axial direction of the rotating shaft; the first sealing plates and the second sealing plates are arranged in an alternating manner.

[0010] Further, first connecting blocks are provided on both sides of the cover body, and adjacent first connecting blocks are connected by second bolts.

[0011] Further, second connecting blocks are provided on both sides of the clamping plate, and adjacent second connecting blocks are connected by third bolts.

[0012] Further, the air supply device includes an air compressor and an air pressure pipe connected to the air compressor; the air pressure pipe is communicated with the inside of one of the sealing covers.

[0013] The technical solution of the embodiment of the present utility model has at least the following advantages and beneficial effects: For the post-installation and detachable rotating shaft sealing structure of the present utility model, when in use, first attach the two bottom plates to the wall surface so that the distance between the bottom plate and the rotating shaft is kept consistent, then fix the bottom plate on the wall surface, clamp a pair of clamping plates on the outer wall of the bearing and fix them, and then attach the sealing cover to the bottom plate and surround the outer wall of the bearing, so that a sealing structure is formed after the sealing cover is fitted with the clamping plate, and then fix the sealing cover on the bottom plate. In this way, the air supply device can supply air into the sealing cover to make the inside of the sealing cover form a positive pressure. Since the sealing property of the side of the bearing close to the sealing cover is stronger than that of the other side, more gas will overflow into the inner wall of the bearing (i.e., the inside of the device). It can effectively prevent the dust generated during the operation of the device inside from entering the bearing and the connection between the bearing and the rotating shaft, and effectively ensure the service life of the bearing and the stability during operation. And this device can be directly installed, disassembled and maintained on the already fixed device without disassembling and assembling the original device (only the rotating shaft at the bearing needs to stop rotating), which will not affect the original device and can significantly reduce the transformation cost. Description of the Drawings

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0015] Figure 1 Structural schematic diagram of the post-installable and detachable shaft seal structure provided by the embodiment of the present utility model;

[0016] Figure 2 Internal structural schematic diagram of the post-installable and detachable shaft seal structure provided by the embodiment of the present utility model;

[0017] Figure 3 Structural schematic diagram of the post-installable and detachable shaft seal structure partially unfolded provided by the embodiment of the present utility model;

[0018] Figure 4 Structural schematic diagram of the bottom plate part provided by the embodiment of the present utility model;

[0019] Figure 5 Structural schematic diagram of the seal cover part provided by the embodiment of the present utility model;

[0020] Figure 6 Structural schematic diagram of the clamping plate part provided by the embodiment of the present utility model.

[0021] Reference numerals: 11 - wall surface, 12 - bearing, 13 - rotating shaft, 14 - pneumatic tube, 21 - bottom plate, 22 - first connection hole, 23 - connecting plate, 24 - cover body, 25 - second sealing plate, 26 - first connection block, 27 - clamping plate, 28 - first sealing plate, 29 - second connection block, 210 - pressing piece, 211 - second connection hole, 212 - first bolt. Detailed implementation manners

[0022] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the present utility model to be protected, but merely represents the selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model.

[0024] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0025] In the description of the present utility model, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the application product is customarily placed during use, it is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0026] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, if terms such as "set", "installed", "connected", "linked" are 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0027] Embodiment

[0028] The following is further described in conjunction with specific embodiments. As shown in the attached Figure 1 - Attached Figure 6As shown, the post-installation detachable shaft seal structure of this embodiment includes a bearing 12, the wall surface 11 where the bearing 12 is located, a shaft 13 passing through the bearing 12, including a pair of bottom plates 21 respectively arranged on both sides of the shaft 13, a pair of seal covers respectively arranged on both sides of the shaft 13, and a pair of clamping plates 27 respectively clamped on both sides of the shaft 13; and a gas supply device communicated with one of the seal covers; the bottom plate 21 is detachably connected to the wall surface 11, the seal cover is detachably connected to the bottom plate 21, and the seal cover is hermetically and slidably connected to the clamping plate 27; a pair of seal covers enclose a closed structure. Specifically, during use, first attach the two bottom plates 21 to the wall surface 11 (this wall surface 11 refers to the outer wall surface 11 of the device), so that the distance between the bottom plate 21 and the shaft 13 is kept consistent, then fix the bottom plate 21 on the wall surface 11, clamp a pair of clamping plates 27 on the outer wall of the bearing 12 and fix them, then attach the seal cover to the bottom plate 21 and enclose the outer wall of the bearing 12, so that a sealed structure is formed after the seal cover is attached to the clamping plate 27, and then fix the seal cover on the bottom plate 21. In this way, the gas supply device can supply gas into the seal cover, so that a positive pressure is formed in the seal cover. Since the sealing property of the side of the bearing 12 close to the seal cover is stronger than that of the other side, more gas will disperse into the inner wall of the bearing 12 (i.e., the interior of the device), which can effectively prevent the dust generated during the operation of the device interior from entering the bearing 12 and the connection between the bearing 12 and the shaft 13, effectively ensuring the service life and the stability during operation of the bearing 12. And this device can be directly installed, disassembled and maintained on the already fixed device, without the need to disassemble and assemble the original device (only the shaft 13 at the bearing 12 needs to stop rotating), which will not affect the original device and can significantly reduce the transformation cost.

[0029] In the bottom plate 21 of this embodiment, a plurality of first connection holes 22 are provided, and a plurality of threaded holes are opened on the wall surface 11. The first bolt 212 passes through the first connection hole 22 and is threadedly connected to the threaded hole. Specifically, the bottom plate 21 can be fixed on the wall surface 11 through the first bolt 212. If it is not convenient to drill holes on the outer wall surface 11 of the device, other fixing methods such as welding can also be selected.

[0030] In this embodiment, a plurality of Z-shaped pressing plates 210 are provided on the bottom plate 21, and second connection holes 211 are formed in the pressing plates 210; the second connection holes 211 coincide with the first connection holes 22, and the first bolts 212 are disposed through the second connection holes 211; one end of the pressing plate 210 away from the second connection hole 211 is pressed on the sealing cover. The sealing cover includes a connecting plate 23 attached to the bottom plate 21, and a cover body 24 fixedly disposed on one side of the connecting plate 23 away from the bottom plate 21; the pressing plate 210 is pressed on the connecting plate 23. Specifically, when fixing the sealing cover, the first bolt 212 can be first passed through the second connecting block 29 and the first connection hole 22 and then screwed into the threaded hole, but not tightened, and then the position of the cover body 24 is gradually adjusted so that the cover body 24 is fully attached to the clamping plate 27, and then the first bolt 212 is tightened, and the connecting plate 23 is clamped by the pressing plate 210 to fix the cover body 24. In this way, the position of the cover body 24 can be finely adjusted, improving the installation accuracy.

[0031] In this embodiment, a plurality of first sealing plates 28 are provided on the outer wall of the clamping plate 27 along the axial direction of the rotating shaft 13; a plurality of second sealing plates 25 are provided on the inner wall of the cover body 24 along the axial direction of the rotating shaft 13; the first sealing plates 28 and the second sealing plates 25 are arranged alternately. Specifically, the first sealing plates 28 and the second sealing plates 25 are arranged alternately, which can increase the resistance of external dust entering the sealing cover, and the first sealing plates 28 will rotate with the rotating shaft 13, while the second sealing plates 25 are fixed and immovable. Therefore, relative movement will occur between the first sealing plates 28 and the second sealing plates 25 during operation. When a large amount of external dust enters between the first sealing plates 28 and the second sealing plates 25, a certain degree of noise will be generated, and at this time, it can remind the worker to clean and maintain the sealing cover in time.

[0032] In this embodiment, first connection blocks 26 are provided on both sides of the cover body 24, and adjacent first connection blocks 26 are connected by second bolts.

[0033] In this embodiment, second connection blocks 29 are provided on both sides of the clamping plate 27, and adjacent second connection blocks 29 are connected by third bolts.

[0034] In this embodiment, the air supply device includes an air compressor and an air pressure pipe 14 connected to the air compressor; the air pressure pipe 14 is communicated with the inside of one of the sealing covers.

[0035] In summary, for the post-installation detachable shaft sealing structure of this embodiment, during use, first attach the two base plates 21 to the wall surface 11, keeping the distance between the base plates 21 and the shaft 13 consistent. Then fix the base plates 21 on the wall surface 11, clamp a pair of clamping plates 27 on the outer wall of the bearing 12 and fix them. Then attach the sealing cover to the base plates 21 and surround the outer wall of the bearing 12, so that a sealing structure is formed after the sealing cover fits with the clamping plates 27. Then fix the sealing cover on the base plates 21. In this way, the air supply device can supply air into the sealing cover to form a positive pressure inside the sealing cover. Since the sealing property of the side of the bearing 12 close to the sealing cover is stronger than that of the other side, more gas will disperse towards the inner wall of the bearing 12 (i.e., the inside of the equipment), which can effectively prevent the dust generated during the operation of the equipment inside from entering the bearing 12 and the connection between the bearing 12 and the shaft 13, effectively ensuring the service life of the bearing 12 and the stability during operation. And this device can be directly installed, disassembled and maintained on the already fixed equipment without disassembling and assembling the original equipment (only the shaft 13 at the bearing 12 needs to stop rotating), which will not affect the original equipment and can significantly reduce the transformation cost.

[0036] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A post-installed detachable shaft sealing structure, comprising a bearing (12), a wall surface (11) where the bearing (12) is located, and a shaft (13) passing through the bearing (12), characterized in that: It comprises a pair of bottom plates (21) respectively arranged on both sides of the rotating shaft (13), a pair of sealing covers respectively arranged on both sides of the rotating shaft (13), and a pair of clamping plates (27) respectively clamped on both sides of the rotating shaft (13); and an air supply device connected to one of the sealing covers; The bottom plate (21) is detachably connected to the wall surface (11), the sealing cover is detachably connected to the bottom plate (21), and the sealing cover is sealingly and slidably connected to the clamping plate (27); a pair of the sealing covers are enclosed to form a closed structure.

2. The post-installed detachable shaft sealing structure according to claim 1 is characterized in that: The bottom plate (21) is provided with a plurality of first connection holes (22), the wall surface (11) is provided with a plurality of threaded holes, and the first bolts (212) pass through the first connection holes (22) and are threadedly connected to the threaded holes.

3. The post-installed detachable shaft sealing structure according to claim 2 is characterized in that: The bottom plate (21) is provided with a plurality of Z-shaped pressing sheets (210), and the pressing sheets (210) are provided with second connecting holes (211); The second connection hole (211) overlaps with the first connection hole (22), and the first bolt (212) is arranged through the second connection hole (211); and one end of the pressing sheet (210) away from the second connection hole (211) is pressed onto the sealing cover.

4. The post-installed detachable shaft sealing structure according to claim 3 is characterized in that: The sealing cover comprises a connecting plate (23) attached to the bottom plate (21), and a cover body (24) fixed to a side of the connecting plate (23) away from the bottom plate (21); the pressing sheet (210) is pressed onto the connecting plate (23).

5. The post-installed detachable shaft sealing structure according to claim 4, characterized in that: The outer wall of the clamping plate (27) is provided with a plurality of first sealing plates (28) along the axial direction of the rotating shaft (13); the inner wall of the cover body (24) is provided with a plurality of second sealing plates (25) along the axial direction of the rotating shaft (13); The first sealing plates (28) and the second sealing plates (25) are arranged alternately.

6. The post-installed detachable shaft sealing structure according to claim 4, characterized in that: First connection blocks (26) are provided on both sides of the cover body (24), and adjacent first connection blocks (26) are connected by second bolts.

7. The post-installed detachable shaft sealing structure according to claim 1, characterized in that: Second connection blocks (29) are provided on both sides of the clamping plate (27), and adjacent second connection blocks (29) are connected by third bolts.

8. The post-installed detachable shaft sealing structure according to claim 1, characterized in that: The air supply device comprises an air compressor and an air pressure pipe (14) connected to the air compressor; the air pressure pipe (14) is communicated with the interior of one of the sealing covers.

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