Split type mechanical seal assembly for shaft rotation position

Abstract

The split type mechanical sealing assembly comprises a static ring assembly and a movable ring assembly, the static ring assembly is installed on the outer surface of one end of the movable ring assembly in a spliced mode, the static ring assembly and the movable ring assembly are spliced and fixed through a fixing clamping piece, the static ring assembly comprises a static ring sleeve and a static ring body, and the static ring sleeve is sleeved with the static ring body. The static ring body is installed on the inner side of the static ring sleeve, a pressing ring used for being matched with the static ring body for use is movably installed on the inner side of the static ring sleeve, the fixing clamping piece comprises a first clamping ring and a second clamping ring, and the first clamping ring is installed on the outer surface of one side of the second clamping ring in a spliced mode. According to the split type mechanical sealing assembly for the axial rotation position, the static ring body can only conduct lifting adjusting operation, the situation that the movable ring body drives the static ring body to rotate synchronously is avoided, by arranging the pressing ring, the split type mechanical sealing assembly for the axial rotation position is provided with a pressing auxiliary structure, the stable sealing state is kept, and the using stability of the split type mechanical sealing assembly is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of mechanical seals, and more specifically, it is a split mechanical seal assembly for use at the shaft rotation part. Background Art

[0002] A mechanical seal is a shaft seal device for rotating machinery. Such as equipment like centrifugal pumps, centrifuges, reactors, and compressors. Since the transmission shaft penetrates inside and outside the equipment, there is a circumferential gap between the shaft and the equipment. The medium in the equipment leaks out through this gap. If the pressure inside the equipment is lower than the atmospheric pressure, air leaks into the equipment. Therefore, there must be a shaft seal device to prevent leakage.

[0003] The patent document with the patent number CN112081923B discloses a mechanical seal assembly structure, including a dynamic ring assembly, a dynamic ring seat, and a static ring assembly. The dynamic ring seat is provided with N spring holes and two pin holes. The dynamic ring assembly has two structural forms, namely dynamic ring assembly I and dynamic ring assembly II. The dynamic ring assembly I includes a dynamic ring I, a dynamic ring I gasket, a dynamic ring I spring, a dynamic ring I seal ring, a cylindrical pin I, and a dynamic ring seat; the dynamic ring assembly II includes a dynamic ring II, a transition seat, a dynamic ring II gasket, a dynamic ring II spring, a dynamic ring II seal ring, a transition seat seal ring, a threaded pin, a cylindrical pin II, and a dynamic ring seat; the static ring assembly includes a static ring, a static ring seal ring, an anti-rotation pin, and a static ring seat; the dynamic ring assembly and the static ring assembly form a paired structure. Through measures such as simplified structure design, vibration damping and impact resistance design, and friction surface modification design, the number of sealing links is minimized as much as possible, the reliability is improved, and it is realized that under harsh environmental conditions such as vibration and impact, it can work stably for a long time, improving the product performance.

[0004] Traditional mechanical seal assemblies have certain deficiencies in use. The mechanical seal assembly forms an elastic structure between the dynamic ring and the static ring through a spring structure. After the mechanical seal assembly is used for a long time, its spring structure is prone to fatigue, making it impossible for the dynamic ring and the static ring to be in close contact, increasing the gap between the dynamic ring and the static ring, and making it impossible to normally generate an oil film structure between the dynamic ring and the static ring, thereby reducing the sealing effect of the mechanical seal assembly; secondly, the traditional mechanical seal assembly uses the mutual cooperation of the dynamic ring and the static ring for sealing operations. The sealing effect between the dynamic ring and the static ring is affected by their contact surface. When the contact surface between the dynamic ring and the static ring is small, the oil film surface is small and the sealing performance is reduced. However, if the contact surface is increased, the specifications of the dynamic ring and the static ring will be increased, increasing the overall volume of the mechanical seal assembly and reducing its use effect; at the same time, the traditional mechanical seal assembly does not have a split-type combined installation structure. The mechanical seal assembly mostly adopts an integral structure design. When maintaining the mechanical seal assembly, the entire mechanical seal assembly needs to be disassembled, increasing the maintenance difficulty of the mechanical seal assembly. Summary of the Invention

[0005] The object of the present invention is to provide a split mechanical seal assembly for the shaft rotation part, which can solve the existing problems.

[0006] The problems solved by the present invention are: 1. The mechanical seal assembly forms an elastic structure between the dynamic ring and the static ring through a spring structure. After the mechanical seal assembly is used for a long time, the spring structure is prone to fatigue, resulting in the inability of the dynamic ring and the static ring to be in close contact, increasing the gap between the dynamic ring and the static ring, and preventing the normal formation of an oil film structure between the dynamic ring and the static ring, thereby reducing the sealing effect of the mechanical seal assembly; 2. The traditional mechanical seal assembly uses the mutual cooperation of the dynamic ring and the static ring for sealing operations. The sealing effect between the dynamic ring and the static ring is affected by their contact surfaces. When the contact surfaces of the dynamic ring and the static ring are small, the oil film surface is small and the sealing performance is reduced. However, if the contact surface is increased, the specifications of the dynamic ring and the static ring will be increased, increasing the overall volume of the mechanical seal assembly and reducing its use effect; 3. At the same time, the traditional mechanical seal assembly does not have a split combined installation structure. The mechanical seal assembly mostly adopts an integrated structure design. When maintaining the mechanical seal assembly, the entire mechanical seal assembly needs to be disassembled, increasing the maintenance difficulty of the mechanical seal assembly.

[0007] The object of the present invention can be achieved by the following technical solutions: A split mechanical seal assembly for the shaft rotation part, including a static ring assembly and a dynamic ring assembly. The static ring assembly is spliced and installed on the outer surface of one end of the dynamic ring assembly. The static ring assembly and the dynamic ring assembly are spliced and fixed through a fixed clamping part. The static ring assembly includes a static ring sleeve and a static ring body. The static ring body is installed inside the static ring sleeve, and a pressing ring for cooperating with the static ring body is movably installed inside the static ring sleeve. The fixed clamping part includes a first clamping ring and a second clamping ring. The first clamping ring is spliced and installed on the outer surface of one side of the second clamping ring. The whole of the first clamping ring and the second clamping ring is a semi-circular ring structure, and docking clamping grooves are provided on the inner sides of the first clamping ring and the second clamping ring.

[0008] As a further technical solution of the present invention, the dynamic ring assembly includes a dynamic ring sleeve and a dynamic ring body. The dynamic ring body is movably installed inside the dynamic ring sleeve. The dynamic ring sleeve and the dynamic ring body are elastically connected by a spring. When this mechanical seal assembly is used, the dynamic ring body of the dynamic ring assembly is sleeved on the shaft rotation surface, so that the dynamic ring assembly can rotate with the rotating shaft. The dynamic ring body is pressed by the spring, so that one end of the dynamic ring body is closely attached to the end of the static ring body.

[0009] As a further technical solution of the present invention, a groove with an annular structure is provided at the end of the moving ring body, and a convex ring for cooperating with the groove is provided at the end of the stationary ring body. The convex ring and the groove are movably butted, and this mechanical seal assembly plays a sealing role at the shaft of the reaction kettle. An oil body is applied to the end of the shaft to ensure its lubrication. The mechanical seal assembly is divided into two parts: a moving ring and a stationary ring. The moving ring body rotates along with the shaft structure, and the stationary ring body is in a relatively fixed state. The stationary ring body is fixed at one end of the moving ring body. When the moving ring body rotates, an oil film structure will be generated between the moving ring body and the stationary ring body, which can play a sealing role at the shaft. The setting of the convex ring and the groove can increase the contact surface between the stationary ring body and the moving ring body, thereby increasing the oil film area between the stationary ring body and the moving ring body and improving the sealing effect between the stationary ring body and the moving ring body.

[0010] As a further technical solution of the present invention, a moving ring seal ring is fixedly installed on the inner surface of the moving ring body, and a stationary ring seal ring is fixedly installed on the outer surface of the stationary ring body. The moving ring seal ring plays a fixing role in the butt joint between the moving ring body and the shaft, avoiding the moving ring body from slipping on the surface of the shaft and increasing the friction between the moving ring body and the shaft. The stationary ring seal ring plays a fixing role between the stationary ring body and the stationary ring sleeve.

[0011] As a further technical solution of the present invention, a compression bolt is movably installed at the upper end of the compression ring. The compression ring and the compression bolt are movably butted through a circular notch, and the compression bolt and the stationary ring sleeve are butted through threads. After the mechanical seal assembly is used for a long time, the spring is prone to fatigue, thereby reducing the elastic force of the spring on the moving ring body, increasing the gap between the moving ring body and the stationary ring body, and preventing the normal formation of an oil film structure between the moving ring body and the stationary ring body. Without replacing the spring, the user rotates the compression bolt to drive the compression ring to move downward, and the compression ring drives the stationary ring body to move downward, using the stationary ring body to increase the pressure on the moving ring body, so that a reasonable gap is maintained between the stationary ring body and the moving ring body, avoiding fatigue of the moving ring body.

[0012] As a further technical solution of the present invention, a number of groups of lifting card slots are annularly distributed on the outer surface of the side of the stationary ring body, and a bolt for cooperating with the lifting card slots is provided on the outer surface of the side of the stationary ring sleeve. By using the lifting card slots in cooperation with the bolts, the stationary ring body can only perform lifting adjustment operations, avoiding the synchronous rotation of the moving ring body driving the stationary ring body.

[0013] As a further technical solution of the present invention, a docking ring is fixedly installed at the lower end of the moving ring assembly, and a fixed flange is fixedly installed on the outer surface of the lower end of the docking ring. The fixed flange cooperates with the docking ring to fix the installation of the entire mechanical seal assembly using bolt structures, so that the stationary ring assembly and the moving ring assembly of the mechanical seal assembly are installed at one end of the shaft, playing a mechanical sealing role.

[0014] As a further technical solution of the present invention, a sealing ring is fixedly installed on the outer surface of the bottom of the fixed flange, and the docking ring and the fixed flange are fixed by bolts.

[0015] As a further technical solution of the present invention, there are balls between the moving ring body and the moving ring sleeve. The first clamping ring and the second clamping ring are fixed by bolts, and fastening bolts are sleeved on the outer surfaces of the first clamping ring and the second clamping ring.

[0016] Beneficial effects of the present invention: 1. By setting the pressing ring, when the split mechanical seal assembly is used at the shaft rotation part, the pressing ring is used to make the static ring body have a pressing auxiliary structure. While keeping the static ring body in a fixed state, it can play a pressing and adjusting role between the static ring body and the moving ring body. After the mechanical seal assembly is used for a long time, the spring is prone to fatigue, which reduces the elastic force of the spring on the moving ring body, making the gap between the moving ring body and the static ring body larger, and preventing the normal formation of an oil film structure between the moving ring body and the static ring body. Without replacing the spring, the user rotates the pressing bolt, so that the pressing bolt drives the pressing ring to move downward, and the pressing ring drives the static ring body to move downward. The static ring body is used to increase the pressure on the moving ring body, so that a reasonable gap is maintained between the static ring body and the moving ring body, preventing the gap between the static ring body and the moving ring body from becoming larger and avoiding fatigue of the moving ring body. Secondly, by using the lifting card slot and the bolt, the static ring body can only perform lifting adjustment operations, avoiding the synchronous rotation of the moving ring body driving the static ring body. By setting the pressing ring, the split mechanical seal assembly at the shaft rotation part has a pressing auxiliary structure, making it maintain a stable sealing state and improving its stability during use.

[0017] 2. When the split mechanical seal assembly is used at the shaft rotation part, it mainly seals the rotating shaft of the equipment. An oil body is applied to the end of the rotating shaft to ensure its lubrication. The mechanical seal assembly is divided into two parts: a moving ring and a static ring. The moving ring body rotates with the rotating shaft structure, and the static ring body is in a relatively fixed state. The static ring body is fixed at one end of the moving ring body. When the moving ring body rotates, an oil film structure will be generated between the moving ring body and the static ring body, which can seal the rotating shaft. The moving ring seal ring plays a fixing role in the connection between the moving ring body and the rotating shaft, preventing the moving ring body from slipping on the surface of the rotating shaft and increasing the friction between the moving ring body and the rotating shaft. The static ring seal ring plays a fixing role between the static ring body and the static ring sleeve. The setting of the convex ring and the groove can increase the contact surface between the static ring body and the moving ring body, thereby increasing the oil film area between the static ring body and the moving ring body and improving the sealing effect between the static ring body and the moving ring body. By using the setting of the convex ring and the groove, the ends of the moving ring body and the static ring body can be improved. Without increasing the overall volume of the moving ring body and the static ring body, the contact surface between the moving ring body and the static ring body is increased, so that a large-area oil film structure can be generated between the moving ring body and the static ring body, improving the overall sealing effect of the mechanical seal assembly.

[0018] 3. By setting a fixed fixture, when using a split mechanical seal assembly at the shaft rotation, the fixed fixture enables a split combined fixing structure between the stationary ring assembly and the rotating ring assembly of the mechanical seal assembly. During the daily maintenance operation of the split mechanical seal assembly, the user removes the bolt body of the fixed fixture, and at the same time loosens the fastening bolts of the first clamping ring and the second clamping ring, pulls the first clamping ring and the second clamping ring outwards, so that the first clamping ring and the second clamping ring are separated, and the first clamping ring and the second clamping ring are removed from between the rotating ring sleeve and the stationary ring sleeve, so that the rotating ring sleeve and the stationary ring sleeve are separated, facilitating the user to perform replacement and maintenance operations inside the rotating ring sleeve and the stationary ring sleeve. The first clamping ring and the second clamping ring adopt a semi-circular ring structure design, and in cooperation with the clamping ring structure at the docking joint of the rotating ring sleeve and the stationary ring sleeve, the docking and fixing operation of the rotating ring sleeve and the stationary ring sleeve can be completed. At the same time, after the first clamping ring and the second clamping ring are docked, the user can rotate the fastening bolt to lock and fix between the rotating ring sleeve and the stationary ring sleeve, avoiding loosening between the rotating ring sleeve and the stationary ring sleeve. By setting the fixed fixture and cooperating with the use of the rotating ring sleeve and the stationary ring sleeve, the mechanical seal assembly has a split combined fixing structure, improving its flexibility during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 is the overall structural schematic diagram of a split mechanical seal assembly for use at the shaft rotation of the present invention; Figure 2 is the internal structure diagram of a split mechanical seal assembly for use at the shaft rotation of the present invention; Figure 3 is the overall structural diagram of the compression ring in a split mechanical seal assembly for use at the shaft rotation of the present invention; Figure 4 is the overall structural diagram of the fixed fixture in a split mechanical seal assembly for use at the shaft rotation of the present invention; Figure 5 is the cross-sectional view of the stationary ring body and the rotating ring body in a split mechanical seal assembly for use at the shaft rotation of the present invention.

[0021] In the figure: 1, docking ring; 2, fixed flange; 3, sealing ring; 4, fixed fixture; 5, compression bolt; 6, stationary ring assembly; 7, rotating ring assembly; 8, spring; 9, rotating ring sleeve; 10, ball; 11, stationary ring sleeve; 12, circular notch; 13, compression ring; 14, stationary ring body; 15, rotating ring body; 16, lifting card slot; 17, first clamping ring; 18, fastening bolt; 19, second clamping ring; 20, docking card slot; 21, stationary ring seal ring; 22, rotating ring seal ring; 23, groove; 24, convex ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] To further elaborate on the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following will, in conjunction with the accompanying drawings and preferred embodiments, elaborate in detail on the specific implementation manners, structures, features and their effects according to the present invention as follows.

[0023] As Figures 1-5 shown, a split mechanical seal assembly for the shaft rotation part includes a stationary ring assembly 6 and a rotating ring assembly 7. The stationary ring assembly 6 is spliced and installed on the outer surface of one end of the rotating ring assembly 7. The stationary ring assembly 6 and the rotating ring assembly 7 are spliced and fixed by a fixing clip 4. The stationary ring assembly 6 includes a stationary ring sleeve 11 and a stationary ring body 14. The stationary ring body 14 is installed inside the stationary ring sleeve 11, and a pressing ring 13 for cooperating with the stationary ring body 14 is movably installed inside the stationary ring sleeve 11. The fixing clip 4 includes a first clamping ring 17 and a second clamping ring 19. The first clamping ring 17 is spliced and installed on the outer surface of one side of the second clamping ring 19. The whole of the first clamping ring 17 and the second clamping ring 19 is a semi-circular ring structure, and docking clamping grooves 20 are provided on the inner sides of the first clamping ring 17 and the second clamping ring 19.

[0024] The rotating ring assembly 7 includes a rotating ring sleeve 9 and a rotating ring body 15. The rotating ring body 15 is movably installed inside the rotating ring sleeve 9. The rotating ring sleeve 9 and the rotating ring body 15 are elastically connected by a spring 8. When this mechanical seal assembly is in use, the rotating ring body 15 of the rotating ring assembly 7 is sleeved on the shaft rotation surface, so that the rotating ring assembly 7 can rotate following the rotating shaft. The spring 8 is used to press the rotating ring body 15, so that one end of the rotating ring body 15 closely abuts against the end of the stationary ring body 14.

[0025] A groove 23 with an annular structure is provided at the end of the rotating ring body 15, and a convex ring 24 for cooperating with the groove 23 is provided at the end of the stationary ring body 14. The convex ring 24 and the groove 23 are movably docked. This mechanical seal assembly plays a sealing role at the reaction kettle rotating shaft. An oil body will be smeared at the end of the rotating shaft to ensure its lubrication. The mechanical seal assembly is divided into two parts: a rotating ring and a stationary ring. The rotating ring body 15 rotates following the rotating shaft structure, and the stationary ring body 14 is in a relatively fixed state. The stationary ring body 14 is fixed at one end of the rotating ring body 15. When the rotating ring body 15 rotates, an oil film structure will be generated between the rotating ring body 15 and the stationary ring body 14, which can play a sealing role at the rotating shaft. The setting of the convex ring 24 and the groove 23 can increase the contact surface between the stationary ring body 14 and the rotating ring body 15, thereby increasing the oil film area between the stationary ring body 14 and the rotating ring body 15 and improving the sealing effect between the stationary ring body 14 and the rotating ring body 15.

[0026] A dynamic ring seal ring 22 is fixedly installed on the inner surface of the rotating ring body 15, and a static ring seal ring 21 is fixedly installed on the outer surface of the stationary ring body 14. The dynamic ring seal ring 22 plays a fixing role in the docking between the rotating ring body 15 and the rotating shaft, preventing the rotating ring body 15 from slipping on the rotating shaft surface and increasing the friction between the rotating ring body 15 and the rotating shaft. The static ring seal ring 21 plays a fixing role between the stationary ring body 14 and the stationary ring sleeve 11.

[0027] A compression bolt 5 is movably installed at the upper end of the compression ring 13. The compression ring 13 and the compression bolt 5 are movably butted through a circular notch 12. The compression bolt 5 and the static ring sleeve 11 are butted through threads. After the mechanical seal assembly is used for a long time, the spring 8 is prone to fatigue, thereby reducing the elastic force of the spring 8 on the dynamic ring body 15, increasing the gap between the dynamic ring body 15 and the static ring body 14, and preventing a normal oil film structure from being formed between the dynamic ring body 15 and the static ring body 14. Without replacing the spring 8, the user rotates the compression bolt 5 to drive the compression ring 13 to move downward, and the compression ring 13 drives the static ring body 14 to move downward, increasing the pressure on the dynamic ring body 15 by using the static ring body 14, maintaining a reasonable gap between the static ring body 14 and the dynamic ring body 15, and preventing the dynamic ring body 15 from experiencing fatigue.

[0028] A number of groups of lifting clamping grooves 16 are annularly distributed on the outer surface of the side of the static ring body 14. A clamping bolt for cooperating with the lifting clamping grooves 16 is arranged on the outer surface of the side of the static ring sleeve 11. By using the lifting clamping grooves 16 in cooperation with the clamping bolt, the static ring body 14 can only perform lifting adjustment operations, preventing the dynamic ring body 15 from driving the static ring body 14 to rotate synchronously.

[0029] A docking ring 1 is fixedly installed at the lower end of the dynamic ring assembly 7, and a fixed flange 2 is fixedly installed on the outer surface of the lower end of the docking ring 1. The fixed flange 2 and the docking ring 1 cooperate to fix the installation of the entire mechanical seal assembly by means of a bolt structure, enabling the static ring assembly 6 and the dynamic ring assembly 7 of the mechanical seal assembly to be installed at one end of the rotating shaft, providing mechanical sealing.

[0030] A sealing ring 3 is fixedly installed on the outer surface of the bottom of the fixed flange 2. The docking ring 1 and the fixed flange 2 are fixed by bolts.

[0031] There are ball bearings 10 between the dynamic ring body 15 and the dynamic ring sleeve 9. The first clamping ring 17 and the second clamping ring 19 are fixed by bolts, and fastening bolts 18 are sleeved on the outer surfaces of the first clamping ring 17 and the second clamping ring 19.

[0032] The split mechanical seal assembly for the shaft rotation part is provided with a pressing ring 13. When the split mechanical seal assembly for the shaft rotation part is in use, the pressing ring 13 enables the stationary ring body 14 to have a pressing auxiliary structure. While keeping the stationary ring body 14 in a fixed state, it can play a role in pressing and adjusting between the stationary ring body 14 and the rotating ring body 15. After the mechanical seal assembly is used for a long time, the spring 8 is prone to fatigue, thus reducing the elastic force of the spring 8 on the rotating ring body 15, increasing the gap between the rotating ring body 15 and the stationary ring body 14, and preventing the normal formation of an oil film structure between the rotating ring body 15 and the stationary ring body 14. Without replacing the spring 8, the user rotates the pressing bolt 5, causing the pressing bolt 5 to drive the pressing ring 13 to move downward, and the pressing ring 13 to drive the stationary ring body 14 to move downward. By using the stationary ring body 14 to increase the pressure on the rotating ring body 15, a reasonable gap is maintained between the stationary ring body 14 and the rotating ring body 15, preventing the gap between the stationary ring body 14 and the rotating ring body 15 from increasing and avoiding the fatigue phenomenon of the rotating ring body 15. Secondly, by using the lifting card slot 16 in cooperation with the bolt, the stationary ring body 14 can only perform lifting adjustment operations, preventing the rotating ring body 15 from driving the stationary ring body 14 to rotate synchronously. By setting the pressing ring 13, the split mechanical seal assembly for the shaft rotation part has a pressing auxiliary structure, enabling it to maintain a stable sealing state and improving its stability during use; When the split mechanical seal assembly for the shaft rotation part is in use, it mainly seals the shaft of the equipment. An oil body is applied to the end of the shaft to ensure lubrication. The mechanical seal assembly is divided into two parts: a rotating ring and a stationary ring. The rotating ring body 15 rotates with the shaft structure, and the stationary ring body 14 is in a relatively fixed state. The stationary ring body 14 is fixed at one end of the rotating ring body 15. When the rotating ring body 15 rotates, an oil film structure is generated between the rotating ring body 15 and the stationary ring body 14, which can seal the shaft. The rotating ring seal ring 22 fixes the connection between the rotating ring body 15 and the shaft, preventing the rotating ring body 15 from slipping on the shaft surface and increasing the friction between the rotating ring body 15 and the shaft. The stationary ring seal ring 21 fixes the connection between the stationary ring body 14 and the stationary ring sleeve 11. The setting of the convex ring 24 and the groove 23 can increase the contact surface between the stationary ring body 14 and the rotating ring body 15, thereby increasing the oil film area between the stationary ring body 14 and the rotating ring body 15 and improving the sealing effect between the stationary ring body 14 and the rotating ring body 15. By using the setting of the convex ring 24 and the groove 23, the ends of the rotating ring body 15 and the stationary ring body 14 can be improved. Without increasing the overall volume of the rotating ring body 15 and the stationary ring body 14, the contact surface between the rotating ring body 15 and the stationary ring body 14 is increased, enabling a large-area oil film structure to be generated between the rotating ring body 15 and the stationary ring body 14 and improving the overall sealing effect of the mechanical seal assembly; By setting the fixed fixture 4, when using the split mechanical seal assembly at the shaft rotation point, the fixed fixture 4 is utilized to enable a split combined fixed structure between the stationary ring assembly 6 and the rotating ring assembly 7 of the mechanical seal assembly. During the daily maintenance operation of the split mechanical seal assembly, the user removes the bolt body of the fixed fixture 4, and at the same time loosens the fastening bolt 18 of the first snap ring 17 and the second snap ring 19, and pulls the first snap ring 17 and the second snap ring 19 outwards to separate the first snap ring 17 and the second snap ring 19, and removes the first snap ring 17 and the second snap ring 19 from between the rotating ring sleeve 9 and the stationary ring sleeve 11, so as to separate the rotating ring sleeve 9 and the stationary ring sleeve 11, facilitating the user to perform replacement and maintenance operations inside the rotating ring sleeve 9 and the stationary ring sleeve 11. The first snap ring 17 and the second snap ring 19 are designed with a semi-circular ring structure, and in cooperation with the snap ring structure at the docking part of the rotating ring sleeve 9 and the stationary ring sleeve 11, the docking and fixing operation of the rotating ring sleeve 9 and the stationary ring sleeve 11 can be completed. At the same time, after the first snap ring 17 and the second snap ring 19 are docked, the user can rotate the fastening bolt 18 to lock and fix the rotating ring sleeve 9 and the stationary ring sleeve 11 to prevent loosening between the rotating ring sleeve 9 and the stationary ring sleeve 11. By setting the fixed fixture 4 and in cooperation with the use of the rotating ring sleeve 9 and the stationary ring sleeve 11, the mechanical seal assembly has a split combined fixed structure, enhancing its flexibility during use.

[0033] The above is only a preferred embodiment of the present invention, and it does not impose any form of limitation on the present invention. Although the present invention has been disclosed above with a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to form equivalent embodiments with equivalent changes, but as long as it does not depart from the technical content of the present invention, any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A split mechanical seal assembly for a shaft rotation part, characterized in that, It includes a stationary ring assembly (6) and a rotating ring assembly (7). The stationary ring assembly (6) is spliced and installed on the outer surface of one end of the rotating ring assembly (7). The stationary ring assembly (6) and the rotating ring assembly (7) are spliced and fixed by a fixing clip (4). The stationary ring assembly (6) includes a stationary ring sleeve (11) and a stationary ring body (14). The stationary ring body (14) is installed inside the stationary ring sleeve (11), and a pressing ring (13) for cooperating with the stationary ring body (14) is movably installed inside the stationary ring sleeve (11). The fixing clip (4) includes a first snap ring (17) and a second snap ring (19). The first snap ring (17) is spliced and installed on the outer surface of one side of the second snap ring (19). The whole of the first snap ring (17) and the second snap ring (19) is of a semi-circular ring structure, and docking card slots (20) are provided on the inner sides of the first snap ring (17) and the second snap ring (19).

2. The split mechanical seal assembly for the shaft rotation position according to claim 1, characterized in that, The rotating ring assembly (7) includes a rotating ring sleeve (9) and a rotating ring body (15). The rotating ring body (15) is movably installed inside the rotating ring sleeve (9). The rotating ring sleeve (9) and the rotating ring body (15) are elastically connected by a spring (8).

3. The split mechanical seal assembly for the shaft rotation position according to claim 2, characterized in that, An annular groove (23) is provided at the end of the rotating ring body (15), and a convex ring (24) for cooperating with the groove (23) is provided at the end of the stationary ring body (14). The convex ring (24) and the groove (23) are movably docked.

4. A split mechanical seal assembly for use at the shaft rotation point, characterized in that, A rotating ring sealing ring (22) is fixedly installed on the inner surface of the rotating ring body (15), and a stationary ring sealing ring (21) is fixedly installed on the outer surface of the stationary ring body (14).

5. The split mechanical seal assembly for the shaft rotation position according to claim 1, wherein, A pressing bolt (5) is movably installed at the upper end of the pressing ring (13). The pressing ring (13) and the pressing bolt (5) are movably docked through a circular notch (12). The pressing bolt (5) and the stationary ring sleeve (11) are threadedly docked.

6. The split mechanical seal assembly for the shaft rotation position according to claim 5, characterized in that A number of groups of lifting card slots (16) are annularly distributed on the outer side surface of the stationary ring body (14), and a bolt for cooperating with the lifting card slots (16) is provided on the outer side surface of the stationary ring sleeve (11).

7. A split mechanical seal assembly for use at a shaft rotation position, characterized in that, A docking ring (1) is fixedly installed at the lower end of the rotating ring assembly (7), and a fixed flange (2) is fixedly installed on the outer surface of the lower end of the docking ring (1).

8. The split mechanical seal assembly for the shaft rotation position according to claim 7, characterized in that, A sealing ring (3) is fixedly installed on the bottom outer surface of the fixed flange (2). The docking ring (1) and the fixed flange (2) are fixed by a bolt body.

9. The split mechanical seal assembly for the shaft rotation position according to claim 2, characterized in that, A ball (10) is provided between the rotating ring body (15) and the rotating ring sleeve (9). The first snap ring (17) and the second snap ring (19) are fixed by a bolt body, and fastening bolts (18) are sleeved on the outer surfaces of the first snap ring (17) and the second snap ring (19).

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