Split mechanical seal

Abstract

This utility model discloses a split mechanical seal, specifically relating to the field of mechanical seal technology. It includes a rotating shaft with a flange fixedly mounted at its bottom. A stationary ring body is provided outside the rotating shaft, comprising a first stationary ring and a second stationary ring. A rotating ring body is provided at the top of the stationary ring body, comprising a first rotating ring and a second rotating ring. An adjusting ring body is provided at the top of the rotating ring body, comprising a first adjusting ring and a second adjusting ring. This utility model allows the rotating ring body, stationary ring body, and adjusting ring body to be installed outside the rotating shaft via a first, second, and third insertion plate. This installation method is simple to operate and improves assembly efficiency. Furthermore, the first and second limiting rings enhance the sealing performance of this utility model.

Description

Technical Field

[0001] This utility model relates to the field of mechanical seal technology, specifically to a split mechanical seal. Background Technology

[0002] Split-type mechanical seals are a specially designed type of mechanical seal. Their main feature is a structure consisting of two halves symmetrically distributed along the shaft axis, greatly simplifying the replacement and installation process. This design is particularly suitable for equipment that is difficult to maintain and replace routinely, such as reaction vessels in the chemical industry.

[0003] For example, Chinese patent application No. 202321482230.7 provides a split-type mechanical seal device for reactors, including a stationary ring and a rotating ring with end face sealing. A rotating ring seat is provided on the outside of the rotating ring, and a guide ring and a first sealing ring are provided between the rotating ring seat and the rotating ring. The guide ring is mounted in the mounting groove on the rotating ring to avoid the rotating ring seat applying excessive clamping force to the rotating ring. The end face of the guide ring extending out of the mounting groove on the rotating ring forms the snap-fit ​​position of the first sealing ring. It has the advantage of easy disassembly while ensuring sealing capacity. The embodiment of this technical solution has the following components arranged coaxially from bottom to top: reactor flange, stationary ring and stationary ring seat, rotating ring and rotating ring seat, clamping sleeve, and adjusting seat. The assembly method is also from bottom to top, avoiding the cumbersome operation caused by installing the sealing ring in the inner fastening groove in the conventional design. The technical personnel in the enterprise can complete the replacement and assembly of the mechanical seal by following the simple example guidance, which has great promotional value.

[0004] However, the following problems still exist in this technical solution: the technical solution directly fits the stationary ring and stationary ring seat, the rotating ring and rotating ring seat, the clamping sleeve, and the adjusting seat onto the outside of the rotating shaft. However, when the diameter of the rotating shaft does not match the above parts, they are easy to get stuck on the outside of the rotating shaft, affecting the assembly progress. Utility Model Content

[0005] The purpose of this invention is to provide a split mechanical seal, in which the rotating ring body, stationary ring body, and adjusting ring body can be installed on the outside of the rotating shaft through the first plug plate, the second plug plate, and the third plug plate. This installation method is simple to operate and improves assembly efficiency. Furthermore, the sealing performance of this invention can be improved through the first and second limiting rings, thereby solving the above-mentioned shortcomings in the technology.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a split mechanical seal, including a rotating shaft, a flange fixedly provided at the bottom of the rotating shaft, a stationary ring body provided outside the rotating shaft, the stationary ring body including a first stationary ring and a second stationary ring, a rotating ring body provided at the top of the stationary ring body, the rotating ring body including a first rotating ring and a second rotating ring, and an adjusting ring body provided at the top of the rotating ring body, the adjusting ring body including a first adjusting ring and a second adjusting ring.

[0007] Preferably, both ends of the first adjusting ring are fixedly provided with first plug-in plates, both ends of the second adjusting ring are fixedly provided with first plug-in slots, both first plug-in plates are provided with fifth threaded holes, both sides of the second adjusting ring are provided with sixth threaded holes, and the connected fifth and sixth threaded holes are internally threaded with third bolts. Both ends of the first moving ring are fixedly provided with third plug-in plates, both ends of the second moving ring are fixedly provided with third plug-in slots, both ends of the first stationary ring are fixedly provided with second plug-in plates, and both ends of the second stationary ring are fixedly provided with second plug-in slots. The first plug-in plates are adapted to the first plug-in slots, the third plug-in plates are adapted to the third plug-in slots, and the second plug-in plates are adapted to the second plug-in slots for easy assembly.

[0008] Preferably, a first limiting ring is fixedly provided on the top of the stationary ring body, and a first limiting groove is provided on the bottom of the moving ring body. The first limiting ring is adapted to the first limiting groove. A second limiting ring is fixedly provided on the top of the moving ring body, and a second limiting groove is provided on the bottom of the adjusting ring body. The second limiting ring is adapted to the second limiting groove to increase the sealing performance.

[0009] Preferably, a stationary ring base is fixedly provided on the outside of the stationary ring body. The stationary ring base has second threaded holes on both sides. The flange has first threaded holes on both sides. The first and second threaded holes are connected internally with the same first bolt. The adjusting ring body has fourth threaded holes on both sides. The rotating ring body has third threaded holes on both sides of the top. The third and fourth threaded holes are connected internally with the same second bolt for mounting on the outside of the rotating shaft.

[0010] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0011] 1. Insert the first plug plate on one side of the first adjusting ring into the first plug groove on the second adjusting ring, and then rotate the third bolt to the sixth threaded hole and the fifth threaded hole to fix the first adjusting ring and the second adjusting ring together. Then, insert the second plug plate on one side of the first stationary ring into the second plug groove on the second stationary ring, and insert the third plug plate on one side of the first rotating ring into the third plug groove on the second rotating ring. This allows the rotating ring body, the stationary ring body, and the adjusting ring body to be installed on the outside of the rotating shaft. This installation method is simple to operate and improves assembly efficiency.

[0012] 2. Inserting the first limiting ring at the top of the stationary ring body into the first limiting groove on the moving ring body, and then inserting the second limiting ring at the top of the moving ring body into the second limiting groove on the adjusting ring body, can improve the sealing performance of this utility model. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0014] Figure 1 This is a front view of the present invention;

[0015] Figure 2 This is a rear view of the present invention;

[0016] Figure 3 This is an exploded view of the present invention;

[0017] Figure 4 This is a schematic diagram of the separated structure of this utility model;

[0018] Figure 5 This is a cross-sectional view of the present invention.

[0019] Explanation of reference numerals in the attached figures:

[0020] 1. Shaft; 2. Flange;

[0021] 3. Static ring body, 301. First static ring, 302. Second static ring;

[0022] 4. Rotating ring body, 401 First rotating ring, 402 Second rotating ring;

[0023] 5. Adjusting ring body, 501. First adjusting ring, 502. Second adjusting ring;

[0024] 6 First limiting ring, 7 First limiting groove, 8 Second limiting ring, 9 Second limiting groove, 10 Stationary ring base, 11 First bolt, 12 First threaded hole, 13 Second threaded hole, 14 Second bolt, 15 Third threaded hole, 16 Fourth threaded hole, 17 First plug-in plate, 18 First plug-in groove, 19 Fifth threaded hole, 20 Sixth threaded hole, 21 Third bolt, 22 Second plug-in plate, 23 Second plug-in groove, 24 Third plug-in plate, 25 Third plug-in groove. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0026] This utility model provides, for example Figure 1-5 A split mechanical seal is shown, including a rotating shaft 1, a flange 2 fixedly mounted at the bottom of the rotating shaft 1, a stationary ring body 3 on the outside of the rotating shaft 1, the stationary ring body 3 including a first stationary ring 301 and a second stationary ring 302, a rotating ring body 4 on the top of the stationary ring body 3, the rotating ring body 4 including a first rotating ring 401 and a second rotating ring 402, and an adjusting ring body 5 on the top of the rotating ring body 4, the adjusting ring body 5 including a first adjusting ring 501 and a second adjusting ring 502.

[0027] like Figure 1-5 As shown, the first adjusting ring 501 has a first plug-in plate 17 fixed at both ends, the second adjusting ring 502 has a first plug-in groove 18 fixed at both ends, the two first plug-in plates 17 each have a fifth threaded hole 19, the second adjusting ring 502 has a sixth threaded hole 20 on both sides, the connected fifth threaded hole 19 and sixth threaded hole 20 are internally threaded with a third bolt 21, the first moving ring 401 has a third plug-in plate 24 fixed at both ends, the second moving ring 402 has a third plug-in groove 25 fixed at both ends, the first stationary ring 301 has a second plug-in plate 22 fixed at both ends, the second stationary ring 302 has a second plug-in groove 23 fixed at both ends, the first plug-in plate 17 is adapted to the first plug-in groove 18, the third plug-in plate 24 is adapted to the third plug-in groove 25, and the second plug-in plate 22 is adapted to the second plug-in groove 23;

[0028] First, the first adjusting ring 501 and the second adjusting ring 502 are respectively fitted onto both sides of the rotating shaft 1. Then, the first insertion plate 17 on one side of the first adjusting ring 501 is inserted into the first insertion groove 18 on the second adjusting ring 502. Next, the third bolt 21 is rotated to the sixth threaded hole 20 and the fifth threaded hole 19, which can fix the first adjusting ring 501 and the second adjusting ring 502 together. Then, the first stationary ring 301 and the second stationary ring 302 are respectively fitted onto both sides of the rotating shaft 1. The second insertion plate 22 on one side of the first stationary ring 301 is inserted into the second insertion groove 23 on the second stationary ring 302. Then, the first moving ring 401 and the second moving ring 402 are respectively fitted onto both sides of the rotating shaft 1. The third insertion plate 24 on one side of the first moving ring 401 is inserted into the third insertion groove 25 on the second moving ring 402. The moving ring body 4, the stationary ring body 3, and the adjusting ring body 5 can be installed on the outside of the rotating shaft 1. This installation method is simple to operate and improves assembly efficiency.

[0029] like Figure 1-5 As shown, a first limiting ring 6 is fixedly provided on the top of the stationary ring body 3, and a first limiting groove 7 is provided on the bottom of the moving ring body 4. The first limiting ring 6 is adapted to the first limiting groove 7. A second limiting ring 8 is fixedly provided on the top of the moving ring body 4, and a second limiting groove 9 is provided on the bottom of the adjusting ring body 5. The second limiting ring 8 is adapted to the second limiting groove 9.

[0030] Inserting the first limiting ring 6 at the top of the stationary ring body 3 into the first limiting groove 7 on the moving ring body 4, and then inserting the second limiting ring 8 at the top of the moving ring body 4 into the second limiting groove 9 on the adjusting ring body 5, can improve the sealing performance of this utility model.

[0031] like Figure 1-5 As shown, a stationary ring base 10 is fixedly provided on the outside of the stationary ring body 3. The stationary ring base 10 has a second threaded hole 13 on both sides. The flange 2 has a first threaded hole 12 on both sides. The first threaded hole 12 and the second threaded hole 13 are connected by the same first bolt 11. The adjusting ring body 5 has a fourth threaded hole 16 on both sides. The moving ring body 4 has a third threaded hole 15 on both sides of the top. The third threaded hole 15 and the fourth threaded hole 16 are connected by the same second bolt 14.

[0032] Rotating the second bolt 14 until it enters the third threaded hole 15 and the fourth threaded hole 16 will fix the adjusting ring body 5 and the moving ring body 4 together. Then rotating the first bolt 11 until it enters the first threaded hole 12 and the second threaded hole 13 will fix the stationary ring body 3 to the top of the flange 2, completing the assembly.

[0033] When this utility model is used, the stationary ring body 3 and the rotating ring body are respectively installed on the rotating shaft 1. The tight fit between the rotating ring body 4 and the stationary ring body 3 prevents media leakage and improves the sealing performance of this utility model.

[0034] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A split mechanical seal comprising a rotating shaft (1), characterized in that: The bottom of the rotating shaft (1) is fixedly provided with a flange (2), and the outside of the rotating shaft (1) is provided with a stationary ring body (3). The stationary ring body (3) includes a first stationary ring (301) and a second stationary ring (302). The top of the stationary ring body (3) is provided with a moving ring body (4). The moving ring body (4) includes a first moving ring (401) and a second moving ring (402). The top of the moving ring body (4) is provided with an adjusting ring body (5). The adjusting ring body (5) includes a first adjusting ring (501) and a second adjusting ring (502). The first adjusting ring (501) is fixedly provided with a first plug plate (17) at both ends, and the second adjusting ring (502) is fixedly provided with a first plug groove (18) at both ends. The two first plug plates (17) are provided with a fifth threaded hole (19). The second adjusting ring (502) is provided with a sixth threaded hole (20) on both sides. The fifth threaded hole (19) and the sixth threaded hole (20) are connected internally with a third bolt (21). The first moving ring (401) is fixedly provided with a third plug plate (24) at both ends, and the second moving ring (402) is fixedly provided with a third plug groove (25) at both ends. The first stationary ring (301) is fixedly provided with a second plug plate (22) at both ends, and the second stationary ring (302) is fixedly provided with a second plug groove (23) at both ends.

2. A split mechanical seal according to claim 1, wherein: The first plug plate (17) is adapted to the first plug slot (18), the third plug plate (24) is adapted to the third plug slot (25), and the second plug plate (22) is adapted to the second plug slot (23).

3. A split mechanical seal according to claim 1, wherein: The stationary ring body (3) is fixedly provided with a first limiting ring (6) at the top, and the moving ring body (4) is provided with a first limiting groove (7) at the bottom. The first limiting ring (6) is adapted to the first limiting groove (7).

4. A split mechanical seal according to claim 1, wherein: The top of the moving ring body (4) is fixedly provided with a second limiting ring (8), and the bottom of the adjusting ring body (5) is provided with a second limiting groove (9). The second limiting ring (8) and the second limiting groove (9) are adapted to each other.

5. A split mechanical seal according to claim 1, wherein: The stationary ring body (3) is fixedly provided with a stationary ring base (10). The stationary ring base (10) has a second threaded hole (13) on both sides. The flange (2) has a first threaded hole (12) on both sides. The first threaded hole (12) and the second threaded hole (13) are connected by the same first bolt (11).

6. A split mechanical seal according to claim 1, wherein: The adjusting ring body (5) has a fourth threaded hole (16) on both sides, and the moving ring body (4) has a third threaded hole (15) on both sides of the top. The third threaded hole (15) and the fourth threaded hole (16) are connected by the same second bolt (14).

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