Bearing sealing structure sealed through front labyrinth disc and rear labyrinth disc

Abstract

The utility model relates to the technical field of bearing sealing, in particular to a bearing sealing structure sealed through a front labyrinth disc and a rear labyrinth disc, and solves the problem that the use of equipment is affected due to untight sealing of a shaft seal when a filter press runs in the prior art. A bearing sealing structure sealed through a front labyrinth disc and a rear labyrinth disc comprises a main shaft and a bearing body, labyrinth discs are fixedly connected to the two ends of the main shaft, bearing labyrinth glands are arranged at the two ends of the main shaft in a sleeving mode, water retaining discs are arranged at the two ends of the main shaft in a sleeving mode, and the bearing labyrinth glands are located between the adjacent labyrinth discs and the water retaining discs. A fixing mechanism is arranged on the surface of the bearing labyrinth gland, and limiting mechanisms are arranged at the two ends of the main shaft. According to the utility model, more effective sealing can be carried out through labyrinth sealing formed by the labyrinth disc and the bearing labyrinth gland, so that lubricating oil is prevented from leaking, the feeding pump of the filter press is ensured to operate more economically, safely and reliably, the sealing mode is firm and reliable, the assembly and disassembly are convenient, and the normal operation and use of equipment can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing sealing, in particular to a bearing sealing structure sealed by front and rear labyrinth discs. Background Art

[0002] Bearing sealing is a technical measure used to prevent lubricant leakage and prevent external impurities (such as dust, water and debris) from entering the bearing.

[0003] In the existing technology, filter cake gradually forms in the filter chamber of the filter press, and the feed resistance also increases accordingly, requiring the feed pump to transition from high flow and low head at the beginning to small flow and high head at the end, and the filter press feed pump switches back and forth between high pressure and low pressure.

[0004] However, when the filter press is running, the shaft seal is often not sealed tightly, causing slurry leakage, which in turn causes the lubricating cooling oil to emulsify, causing bearing failure and shortening the service life of the bearing assembly. Horizontal split bearing assemblies are commonly used now. Under reciprocating switching conditions, especially when maintaining pressure at low flow and high head, the bearing assembly is subjected to large radial forces, which often causes bearing seal failure and lubricating oil leakage. Utility Model Content

[0005] The utility model aims to provide a bearing sealing structure sealed by front and rear labyrinth disks, which solves the problem in the prior art that the shaft seal is often not tight during operation of the filter press and affects the use of the equipment.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A bearing sealing structure sealed by front and rear labyrinth disks includes a main shaft and a bearing body, both ends of the main shaft are fixedly connected to the labyrinth disks, both ends of the main shaft are sleeved with bearing labyrinth covers, both ends of the main shaft are sleeved with water retaining disks, the bearing labyrinth covers are located between the adjacent labyrinth disks and the water retaining disks, the surface of the bearing labyrinth covers is provided with a fixing mechanism, and both ends of the main shaft are provided with a limiting mechanism.

[0008] Preferably, a plurality of insertion grooves are provided on both sides of the bearing labyrinth gland, the sealing portion of the labyrinth disc and the water retaining disc is located inside the insertion grooves, and a pressure pad is fixedly connected inside the insertion grooves.

[0009] Preferably, the fixing mechanism includes a bolt passing through the side of the bearing labyrinth cover, the bolt is threadedly connected to the bearing body, and the side of the bearing labyrinth cover is rotatably connected to an anti-slip block.

[0010] Preferably, the cross-sections of the labyrinth disk and the water retaining disk are both inverted T-shaped, and the bottoms of the labyrinth disk and the water retaining disk fit together.

[0011] Preferably, the limiting mechanism includes a disassembly ring fixedly connected to the surface of the main shaft, and the surface of the main shaft is penetrated by a shaft sleeve.

[0012] Preferably, a sealing ring is provided between the water retaining plate and the bearing labyrinth gland.

[0013] The utility model has the following beneficial effects:

[0014] When the main shaft and the bearing body are in use, the labyrinth disc and the bearing labyrinth gland form a labyrinth seal that can perform more effective sealing, so that the lubricating oil will not leak, and the bearing will not fail and the service life of the bearing assembly will not be affected, ensuring that the filter press feed pump operates more economically and safely and reliably. The firm and reliable sealing method and the easy disassembly and assembly can ensure the normal operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 A schematic diagram of the present utility model;

[0017] Figure 2 for Figure 1 A side view of the bearing labyrinth gland after the bearing body is removed;

[0018] Figure 3 for Figure 2 Schematic diagram of separation after removing the main axis;

[0019] Figure 4 for Figure 3 Schematic side view of

[0020] Figure 5 for Figure 2 Schematic side section of .

[0021] In the figure: 1. main shaft; 2. bearing body; 3. labyrinth disk; 4. bearing labyrinth gland; 5. water retaining plate; 6. fixing mechanism; 7. limiting mechanism; 8. insertion groove; 601. bolt; 701. disassembly ring; 702. shaft sleeve; 703. sealing ring. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0023] Reference Figure 1-5The cam 3 is a kind of sealing member that is sealed by front and rear labyrinth disks, and comprises a main shaft 1 and a bearing body 2. Both ends of the main shaft 1 are fixedly connected with a labyrinth disk 3. Both ends of the main shaft 1 are sleeved with a bearing labyrinth pressure cover 4. Both ends of the main shaft 1 are sleeved with a water retaining disk 5. The bearing labyrinth pressure cover 4 is located between the adjacent labyrinth disk 3 and the water retaining disk 5. When the bearing needs to be sealed, the labyrinth disk 3 and the bearing labyrinth pressure cover 4 form a labyrinth seal, and the outer layer of the bearing labyrinth pressure cover 4 can also be blocked by the water retaining disk 5, so that the sealing effect is better. The surface of the bearing labyrinth pressure cover 4 is provided with a fixing mechanism 6, which can conveniently fix the bearing labyrinth pressure cover 4 on the bearing body 2, so that the bearing labyrinth pressure cover 4 can stably form a labyrinth seal with the labyrinth disk 3 to ensure the sealing effect. Both ends of the main shaft 1 are provided with a limiting mechanism 7, which can limit the sealing structure on the main shaft 1 to prevent the sealing structure from detaching from the main shaft 1, thereby ensuring that the sealing mechanism is fixed on the main shaft 1.

[0024] Furthermore, a number of insertion grooves 8 are provided on both sides of the bearing labyrinth pressure cover 4, and the sealing parts of the labyrinth disk 3 and the water retaining disk 5 are located inside the insertion grooves 8, and the interior of the insertion grooves 8 is fixedly connected with a pressure pad 9. In the labyrinth seal, the insertion grooves 8 on both sides of the bearing labyrinth pressure cover 4 can be conveniently filled with the sealing parts of the labyrinth disk 3 and the water retaining disk 5, and the pressure pad 9 can reduce the gap when being filled, thereby increasing the complexity of leakage, thereby forming a labyrinth seal, ensuring the sealing effect, and not easily causing leakage.

[0025] Furthermore, the fixing mechanism 6 includes a bolt 601 passed through the side of the bearing labyrinth cover 4, the bolt 601 is threadedly connected to the bearing body 2, and the side of the bearing labyrinth cover 4 is rotatably connected with an anti-slip block 602. When the bearing labyrinth cover 4 needs to be fixed, the bearing labyrinth cover 4 can be fixedly connected to the bearing body 2 by rotating the bolt 601, so that the bearing labyrinth cover 4 has higher stability and can be better sealed. After the bolt 601 is rotated, the anti-slip block 602 can be rotated so that the anti-slip block 602 blocks one end of the bolt 601 to prevent the bolt 601 from easily popping out, thereby ensuring the stability of the bolt 601 fixation.

[0026] Furthermore, the cross-sections of the labyrinth disk 3 and the water retaining disk 5 are both inverted T-shaped, and the bottoms of the labyrinth disk 3 and the water retaining disk 5 fit together. The parts of the labyrinth disk 3 and the water retaining disk 5 close to the main shaft 1 fit together to better seal, ensuring a better labyrinth sealing effect.

[0027] Furthermore, the limiting mechanism 7 includes a disassembly ring 701 fixedly connected to the surface of the main shaft 1, and a shaft sleeve 702 is passed through the surface of the main shaft 1. When the main shaft 1 is sealed by a labyrinth seal composed of a labyrinth disk 3, a water retaining disk 5 and a bearing labyrinth cover 4.

[0028] Furthermore, a sealing ring 703 is provided between the water retaining plate 5 and the bearing labyrinth gland 4. The sealing ring 703 can increase the sealing performance between the water retaining plate 5 and the bearing labyrinth gland 4, thereby ensuring the sealing effect.

[0029] In summary:

[0030] When the bearing is sealed, a labyrinth seal is formed between the bearing body 2 and the main shaft 1 through the labyrinth disk 3 and the bearing labyrinth gland 4. After that, the sealing effect of the labyrinth seal can be assisted by the water retaining disk 5, thereby ensuring the overall sealing effect. Then, the bolt 601 is rotated, and the bolt 601 fixes the bearing labyrinth gland 4 to the bearing body 2 to prevent the bearing labyrinth gland 4 from separating from the labyrinth disk 3. Then, the anti-slip block 602 is rotated to make the bolt 601 fix the bearing labyrinth gland 4 more stably, and then the disassembly ring 701 is removed. It is installed on the main shaft 1 together with the shaft sleeve 702 to restrict the water retaining plate 5 and prevent the water retaining plate 5 from leaving the bearing labyrinth pressure cover 4 to affect the sealing effect. The sealing ring 703 is a structure that improves the sealing effect and can improve the sealing effect of the labyrinth seal. The pressure pad 9 is a structure that reduces the gap when the sealing part of the labyrinth plate 3 and the water retaining plate 5 can fill the adjacent insertion groove 8, thereby improving the sealing effect. Through the above structure, sealing can be performed through the labyrinth seal. This kind of seal is firm and reliable and easy to disassemble and assemble, thereby improving the sealing performance and ensuring the normal operation of the equipment.

[0031] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions merely illustrate the principles of the present invention. Various changes and improvements are possible without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed for the present invention is defined by the appended claims and their equivalents.

Claims

1. A bearing sealing structure sealed by front and rear labyrinth disks, comprising a main shaft (1) and a bearing body (2), characterized in that: Both ends of the main shaft (1) are fixedly connected to a labyrinth disk (3), both ends of the main shaft (1) are sleeved with a bearing labyrinth cover (4), both ends of the main shaft (1) are sleeved with a water retaining disk (5), the bearing labyrinth cover (4) is located between the adjacent labyrinth disk (3) and the water retaining disk (5), a fixing mechanism (6) is provided on the surface of the bearing labyrinth cover (4), and both ends of the main shaft (1) are provided with a limiting mechanism (7).

2. A bearing sealing structure sealed by front and rear labyrinth discs according to claim 1, characterized in that: A plurality of insertion grooves (8) are provided on both sides of the bearing labyrinth pressure cover (4); the sealing portion of the labyrinth disc (3) and the water retaining disc (5) is located inside the insertion grooves (8); and a pressure pad (9) is fixedly connected inside the insertion grooves (8).

3. The bearing sealing structure according to claim 1, wherein: The fixing mechanism (6) comprises a bolt (601) passing through the side of the bearing labyrinth cover (4); the bolt (601) is threadedly connected to the bearing body (2); and the side of the bearing labyrinth cover (4) is rotatably connected to an anti-slip block (602).

4. The bearing sealing structure according to claim 1, wherein: The cross-sections of the labyrinth disk (3) and the water retaining disk (5) are both inverted T-shaped, and the bottoms of the labyrinth disk (3) and the water retaining disk (5) fit together.

5. The bearing sealing structure sealed by front and rear labyrinth disks according to claim 1, characterized in that: The limiting mechanism (7) comprises a disassembly ring (701) fixedly connected to the surface of the main shaft (1), and a shaft sleeve (702) is provided on the surface of the main shaft (1).

6. The bearing sealing structure according to claim 1, wherein: A sealing ring (703) is provided between the water retaining plate (5) and the bearing labyrinth gland (4).

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