Water-lubricated rotating shaft sealing device

Abstract

The utility model relates to the technical field of machinery, and discloses a water lubrication rotating shaft sealing device which comprises a sealing seat, a first groove hole is formed in the middle end of the sealing seat, a rotating shaft is rotatably connected to the inner wall of the first groove hole, a first pipe connector is arranged on the left side of the sealing seat, and a second pipe connector is arranged on the right side of the sealing seat. A shaft sleeve is arranged on the outer ring of the top of the rotating shaft in a sleeving mode, a shaft seal is arranged on the outer wall of the shaft sleeve, a shaft seal check ring is arranged on the inner wall of the top of the shaft seal, evenly-distributed mounting grooves are formed in the outer wall of the top of the sealing seat, and a mounting assembly is arranged at the bottom of the sealing seat and comprises a shaft seal baffle. And the shaft seal baffle is arranged at the bottom of the sealing seat. According to the utility model, through the sealing seat, the shaft seal and the shaft seal check ring, the influence of deflection of the main shaft is avoided, the structure of the main shaft can be self-adaptive and automatically centered under the condition of vibration and deflection of the main shaft, and the sealing failure is avoided under the second-class environment.

Description

Technical Field

[0001] The utility model relates to the technical field of machinery, in particular to a water-lubricated rotary shaft sealing device. Background Art

[0002] At present, many high-speed products have encountered a problem, that is, the seal between the high-speed rotating shaft and the working chamber. There are many options on the market, such as labyrinth seals, oil seals, floating rings, mechanical seals, threaded seals, compressed gas seals, etc., but all of them have the risk of leakage, and maintenance is difficult and costly.

[0003] The losses caused by friction and wear are very alarming. Especially the rotating shaft needs lubrication. Therefore, strengthening the lubrication of the rotating shaft is of great significance to improving the wear resistance of the friction pair and the reliability of mechanical equipment, extending the service life of the shaft, reducing the maintenance cost of the shaft, and reducing mechanical equipment failures. The reverse resistance of the main shaft is high cost and easy to scrap, and the maintenance is complicated.

[0004] In view of the above problems, a water-lubricated rotating shaft sealing device is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a water-lubricated rotating shaft sealing device, which solves the wear resistance of the friction pair and the reliability of mechanical equipment in the background technology, prolongs the service life of the shaft, reduces the cost of shaft use and maintenance, and reduces mechanical equipment failures, all of which are of great significance, and reduces the reverse resistance of the main shaft and the high cost and easy scrapping and complex maintenance problems.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a water-lubricated rotating shaft sealing device, comprising a sealing seat, a first slot hole is opened inside the middle end of the sealing seat, a rotating shaft is rotatably connected to the inner wall of the first slot hole, a first pipe joint is arranged on the left side of the sealing seat, a second pipe joint is arranged on the right side of the sealing seat, a shaft sleeve is arranged on the outer ring sleeve at the top of the rotating shaft, a shaft seal is arranged on the outer wall of the shaft sleeve, a shaft seal retaining ring is arranged on the inner wall at the top of the shaft seal, evenly distributed installation grooves are opened on the outer wall at the top of the sealing seat, and an installation assembly is arranged at the bottom of the sealing seat.

[0007] By adopting the above technical solution, lubricating water is added to the outer wall of the rotating shaft through the first pipe joint, and the used lubricating water is discharged through the second pipe joint to lubricate the rotating shaft.

[0008] As a further description of the above technical solution: the installation assembly includes a shaft sealing baffle, and the shaft sealing baffle is arranged at the bottom of the sealing seat.

[0009] By adopting the above technical solution, the shaft seal is limitedly controlled by the shaft seal baffle.

[0010] As a further description of the above technical solution: a second slot hole is provided inside the first pipe joint and the second pipe joint.

[0011] By adopting the above technical solution, the first slot hole of the first pipe joint is injected, and the second slot hole of the second pipe joint is discharged.

[0012] As a further description of the above technical solution: the top of the shaft seal baffle is provided with evenly distributed second threaded holes.

[0013] By adopting the above technical solution, the shaft seal baffle is fixed through the second threaded hole.

[0014] As a further description of the above technical solution: the second threaded hole is threadedly connected to the inner wall of the sealing seat with a locking bolt.

[0015] By adopting the above technical solution, the shaft seal baffle is fixed to the bottom of the seal seat.

[0016] As a further description of the above technical solution: an inlet is opened inside the left side of the shaft sealing retaining ring, and an outlet is opened inside the right side of the shaft sealing retaining ring.

[0017] By adopting the above technical solution, lubricating water is added through the inlet and discharged through the outlet.

[0018] As a further description of the above technical solution: an inlet hole is opened inside the left side of the sealing seat, and an outlet hole is opened inside the right side of the sealing seat.

[0019] By adopting the above technical solution, the lubricating water passes through the sealing seat and then enters the interior through the entry hole.

[0020] As a further description of the above technical solution: a first threaded hole is opened inside the front end of the left side of the sealing seat, and a sealing bolt is threadedly connected to the inner wall of the first threaded hole.

[0021] By adopting the above technical solution, the sealing seat is sealed by the sealing bolt.

[0022] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0023] 1. The utility model provides a water-lubricated rotating shaft sealing device, which is not affected by the spindle deflection through the sealing seat, the shaft seal and the shaft seal retaining ring. The spindle structure can automatically align the spindle when the spindle vibrates and deflects, and the seal will not fail even in the second type of environment.

[0024] 2. The utility model provides a water-lubricated rotary shaft sealing device. First, through the first pipe joint and the second pipe joint, the cooling medium is not affected by the environment and the material. The rotating shaft is equipped with a sleeve structure, which can effectively protect the main shaft surface. The structure is compact and the volume is small. The form and size of the flange can adapt to various space usage requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall explosion structure of the utility model;

[0026] Figure 2 It is a schematic diagram of the overall cross-sectional structure of the utility model;

[0027] In the figure: 1, sealing seat; 2, rotating shaft; 3, first pipe joint; 4, second pipe joint; 5, first slotted hole; 6, first threaded hole; 7, sealing bolt; 8, discharge hole; 9, shaft seal retaining ring; 10, shaft seal; 11, inlet; 12, shaft seal baffle; 13, locking bolt; 14, second threaded hole; 15, mounting groove; 16, inlet hole; 17, second slotted hole; 18, discharge port; 19, shaft sleeve. DETAILED DESCRIPTION

[0028] The following will refer to the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] In order to further understand the content of the utility model, the utility model is described in detail with reference to the accompanying drawings.

[0030] Reference Figure 1 The utility model is a water-lubricated rotating shaft sealing device, comprising a sealing seat 1, a first slot hole 5 is opened inside the middle end of the sealing seat 1, the rotating shaft 2 can rotate on the inner wall through the first slot hole 5, the inner wall of the first slot hole 5 is rotatably connected to the rotating shaft 2, a first pipe joint 3 is arranged on the left side of the sealing seat 1, lubricating water is injected through the first pipe joint 3, and a second pipe joint 4 is arranged on the right side of the sealing seat 1, and the lubricating water is discharged through the second pipe joint 4.

[0031] Reference Figure 2The outer ring sleeve at the top of the rotating shaft 2 is provided with a shaft sleeve 19, the outer wall of the shaft sleeve 19 is provided with a shaft seal 10, the inner wall of the top of the shaft seal 10 is provided with a shaft seal retaining ring 9, the outer wall of the top of the seal seat 1 is provided with evenly distributed installation grooves 15, and the bottom of the seal seat 1 is provided with an installation component, the installation component includes a shaft seal baffle 12, and the shaft seal baffle 12 is arranged at the bottom of the seal seat 1. The shaft seal retaining ring 9 can provide an axial relative support force between the shaft seal 10, so that the shaft seal 10 can run smoothly. The shaft seal baffle 12 plays a limiting role on the shaft seal 10, and the first pipe joint 3 and the second pipe joint 4 are both provided with a second slot 17, and the top of the shaft seal baffle 12 is provided with evenly distributed A second threaded hole 14 is provided, and the second threaded hole 14 is threadedly connected to the inner wall of the sealing seat 1 with a locking bolt 13, and the shaft seal baffle 12 is fixed to the bottom of the sealing seat 1 by the locking bolt 13. An inlet 11 is provided inside the left side of the shaft seal retaining ring 9, and a discharge port 18 is provided inside the right side of the shaft seal retaining ring 9. An inlet hole 16 is provided inside the left side of the sealing seat 1, and lubricating water is injected through the inlet hole 16 and the inlet port 11. A discharge hole 8 is provided inside the right side of the sealing seat 1, and the used lubricating water is discharged through the discharge hole 8 and the discharge port 18. A first threaded hole 6 is provided inside the front end of the left side of the sealing seat 1, and a sealing bolt 7 is threadedly connected to the inner wall of the first threaded hole 6.

[0032] Working principle: Lubricating water enters the inside from the second slot hole 17 of the first pipe joint 3, and the lubricating water enters the hole 16. After entering, the rotating shaft 2 starts to rotate, and the shaft sleeve 19 protects the surface of the rotating shaft 2. A seal is generated between them, and the lubricating water can play a relative cooling role. The lubricating waste water with temperature is discharged outward from the discharge port 18, the discharge hole 8 and the second slot hole 17 of the second pipe joint 4. The shaft seal retaining ring 9 can provide a relative axial supporting force between the shaft seal 10, so that the shaft seal 10 can run smoothly. The shaft seal baffle 12 limits the shaft seal 10, and the shaft seal baffle 12 is fixed to the bottom of the sealing seat 1 by the locking bolt 13.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A water-lubricated rotary shaft sealing device, comprising a sealing seat (1), characterized in that: A first slot (5) is provided inside the middle end of the sealing seat (1), and a rotating shaft (2) is rotatably connected to the inner wall of the first slot (5); a first pipe joint (3) is provided on the left side of the sealing seat (1), and a second pipe joint (4) is provided on the right side of the sealing seat (1); a shaft sleeve (19) is provided on the outer ring sleeve of the top of the rotating shaft (2), a shaft seal (10) is provided on the outer wall of the shaft sleeve (19), and a shaft seal retaining ring (9) is provided on the inner wall of the top of the shaft seal (10); evenly distributed mounting grooves (15) are provided on the outer wall of the top of the sealing seat (1), and a mounting assembly is provided at the bottom of the sealing seat (1); The mounting assembly comprises a shaft sealing baffle (12), wherein the shaft sealing baffle (12) is arranged at the bottom of the sealing seat (1); The top of the shaft seal baffle (12) is provided with evenly distributed second threaded holes (14); The second threaded hole (14) is threadedly connected to the inner wall of the sealing seat (1) with a locking bolt (13).

2. A water-lubricated rotary shaft sealing device according to claim 1, characterized in that: A second slot hole (17) is provided inside each of the first pipe joint (3) and the second pipe joint (4).

3. A water-lubricated rotary shaft sealing device according to claim 1, characterized in that: An inlet (11) is provided inside the left side of the shaft sealing retaining ring (9), and an outlet (18) is provided inside the right side of the shaft sealing retaining ring (9).

4. A water-lubricated rotary shaft sealing device according to claim 1, characterized in that: An inlet hole (16) is provided inside the left side of the sealing seat (1), and an outlet hole (8) is provided inside the right side of the sealing seat (1).

5. The water-lubricated rotary shaft sealing device according to claim 1, characterized in that: A first threaded hole (6) is provided inside the front end of the left side of the sealing seat (1), and a sealing bolt (7) is threadedly connected to the inner wall of the first threaded hole (6).

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