Variable-distribution multi-hole end face mechanical sealing structure

Abstract

The invention discloses a variable distribution porous end face mechanical sealing structure, and relates to the technical field of mechanical end face sealing, the variable distribution porous end face mechanical sealing structure comprises a box wall and a rotating shaft, a sealing mechanism is arranged on the outer side of the rotating shaft, the sealing mechanism comprises a static ring assembly, a movable ring assembly and a filtering assembly, and the static ring assembly comprises a fixed static ring mounting seat and a static ring fixed in the static ring mounting seat; the movable ring assembly comprises a fixed seat fixed to the rotating shaft and a movable ring sliding on the fixed seat, one end of the movable ring abuts against the static ring, a plurality of variably-distributed micropores are formed in the end face of the movable ring, a coarse filter screen and a fine filter screen are arranged in the filter assembly, and the variably-distributed micropores formed in the end face of the movable ring are used for forming a stable fluid lubricating film. The coarse filter screen and the fine filter screen are matched to realize graded filtration, the coarse filter screen can rotate to prevent impurity attachment and can be detached and maintained, the fine filter screen drives a backflushing blade to automatically clean dirt through a rotating shaft, the filter screens are prevented from being blocked, the risk of sealing failure and leakage is effectively reduced, and an external energy source is not needed in the cleaning process.

Description

Technical Field

[0001] This invention relates to the field of mechanical end face sealing technology, specifically to a variable distribution porous end face mechanical seal structure. Background Technology

[0002] Currently, mechanical seals are frequently used for shaft seals in fluid machinery. With the rapid development of various industries, mechanical seals are required to have higher stability and longer service life. Among them, variable distribution porous end faces refer to a type of mechanical seal end face where the micropores on the surface are distributed non-uniformly and optimized according to the working conditions (such as pressure, speed, and medium) to achieve superior overall performance compared to uniformly distributed porous end faces.

[0003] A search revealed a non-contact mechanical seal structure with an inclined, gradually changing porous end face, patent application number CN201310364262.1. The core of this design is that when the sealing ring rotates at high speed, it drives the sealing medium (such as oil, water, or gas) into these micropores. The medium generates eddies and pressure surges in the micropores, creating an upward opening force that slightly opens the two end faces, forming a very thin lubricating film. This transforms the dry friction between the end faces into liquid friction, significantly reducing wear and heat generation, and effectively improving the service life of the sealing structure.

[0004] Meanwhile, when particles enter the sealing end face, the variablely distributed micropores can absorb them. Combined with the continuous and slow passage of the liquid film through the sealing interface, they can carry away the tiny particles that have entered the gap between the end faces, achieving a certain degree of self-cleaning and effectively utilizing the ability of the pores to prevent solid particles from entering.

[0005] However, in actual use, there is a certain upper limit to the amount of fixed particles that micropores can absorb. If there are too many fixed particles, it is easy to exceed the self-cleaning limit, which can easily lead to blockage, resulting in sealing failure and leakage. Based on this, this solution provides a variable distribution multi-pore end face mechanical seal structure to solve the above-mentioned problems. Summary of the Invention

[0006] To solve the above-mentioned technical problems, a variable distribution multi-hole end-face mechanical seal structure is provided. This technical solution solves the problems mentioned in the background technology.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0008] A variable-distribution porous end-face mechanical seal structure includes a housing wall and a rotating shaft rotatably mounted on the housing wall. A sealing mechanism is fixedly mounted on the housing wall on the outer side of the rotating shaft. The sealing mechanism consists of a stationary ring assembly, a rotating ring assembly, and a filter assembly. The stationary ring assembly includes a stationary ring mounting seat fixed on the housing wall, and a stationary ring is fixed inside the stationary ring mounting seat. The rotating ring assembly includes a fixed seat fixed to the rotating shaft, and a slidably compensated rotating ring is provided on the fixed seat. One end of the rotating ring abuts against the stationary ring, and a plurality of micropores with a variable distribution are opened on the end of the rotating ring facing the stationary ring. The filter assembly is provided with a self-cleaning coarse filter screen and a fine filter screen.

[0009] Preferably, the stationary ring assembly further includes several fixing bolts that are threaded to the box wall, and the stationary ring mounting base is fixedly connected to the box wall through several fixing bolts.

[0010] Preferably, the stationary ring mounting base has several sealing grooves 1 at one end near the box wall, and each of the several sealing grooves 1 is provided with a sealing ring for sealing. The outer surface of the stationary ring has a sealing groove 2, and the sealing groove 2 is provided with a sealing ring 1 for sealing.

[0011] Preferably, the rotating ring assembly includes several fixing bolts two disposed on the fixed seat, the fixed seat is sleeved on the surface of the rotating shaft, and the fixed seat is fixedly connected to the rotating shaft through the fixing bolts two; a rotating ring mounting seat is slidably mounted on the right end surface of the fixed seat, the rotating ring is fixedly mounted on the rotating ring mounting seat, and a compensating spring is fixedly connected between the rotating ring mounting seat and the fixed seat.

[0012] Preferably, a sealing groove three is provided on the inner end of the fixing seat, and a sealing ring two for sealing is provided inside the sealing groove three.

[0013] Preferably, the filter assembly includes an inner ring fixedly mounted on a fixed base and a cylinder fixedly mounted on a stationary ring mounting base. An outer ring is provided on the outer side of the inner ring, and the right end of the outer ring is rotatably connected to the cylinder. The surface of the outer ring is provided with several slots, and several sets of mounting brackets and connecting plates are fixedly connected between the stationary ring mounting base and the outer ring. The mounting brackets and connecting plates are staggered and connected end to end. The coarse filter screen is disposed inside the mounting bracket and is detachable.

[0014] Preferably, the mounting frame has a sliding frame inside, the coarse filter screen is fixedly installed on the sliding frame, and one side of the sliding frame has a mounting groove and a sliding groove connected to the mounting groove; a fastening spring is fixedly connected inside the mounting groove, one end of the fastening spring is fixedly connected to a moving block, the surface of the moving block is fixedly connected to a plug rod and a lever, the top end of the plug rod passes through the sliding frame and is engaged with the mounting frame, and one end of the lever extends out through the sliding groove.

[0015] Preferably, a fine filter screen is fixedly connected to the inner wall of the cylinder, and the lower end of the fine filter screen is rotatably connected to the fixed seat. Several sets of brackets are fixedly connected to the inner wall of the cylinder on the right side of the fine filter screen. Rotating rods are rotatably installed on each of the several sets of brackets. Backwash blades are fixedly installed on the rotating rods. The end of the rotating rod away from the fixed seat is rotatably connected to the cylinder. The other end of the rotating rod is fixedly connected to a bevel gear. Several bevel gears mesh with bevel gear rings fixedly installed on the fixed seat.

[0016] Compared with the prior art, the present invention proposes a variable distribution porous end face mechanical seal structure, which has the following beneficial effects:

[0017] 1. The present invention includes a sealing mechanism, wherein the sealing mechanism uses a compensating spring to ensure that the moving ring and the stationary ring are always in close contact, and can compensate for wear or axial displacement, thus avoiding leakage of the gap between the contact surfaces; while the variable distribution micropores provided on the surface of the moving ring effectively optimize the fluid film on the contact surface, which reduces friction and wear, improves the uniformity of sealing pressure, and further enhances the sealing effect.

[0018] 2. The filter assembly in the sealing mechanism of this invention achieves graded filtration by coarse and fine filter screens working together. This effectively blocks impurities from entering the sealing end face, reducing scratches and wear on the contact surface from the source, preventing excessive fixed particles from exceeding the self-cleaning limit, and effectively reducing the possibility of seal failure and leakage.

[0019] 3. In the sealing assembly of this invention, the coarse filter screen rotates with the fixed seat in the rotating ring assembly, effectively preventing impurities from adhering to the filter screen. At the same time, the centrifugal force of the rotation can throw out the impurities on the filter screen. The fine filter screen rotates with the top bevel gear ring of the fixed seat, and the bevel gears at the ends of multiple rotating rods at the top of the bevel gear ring mesh, thereby driving all rotating rods to rotate. This drives the backwash blades to stir the medium at high speed on the right side of the fine filter screen, generating eddies and reverse flushing force, which washes away the fine impurities trapped by the fine filter screen, preventing the filter screen from clogging. This realizes automatic and continuous cleaning during operation, effectively reducing the risk of impurities entering due to filter screen failure, indirectly extending the replacement cycle of the sealing assembly. Moreover, the power for driving is all from the rotating shaft, requiring no external energy or control system.

[0020] 4. The coarse filter screen in this invention adopts a detachable design. By pressing the lever, the insertion rod can be disengaged from the locking position, and the sliding frame can be pulled out, which is convenient for manual and quick cleaning or replacement, and maintenance is convenient. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the internal structure of the sealing mechanism in this invention;

[0023] Figure 3This is a schematic diagram of the internal structure of the stationary ring assembly in this invention;

[0024] Figure 4 This is a schematic diagram of the internal structure of the dynamic ring assembly in this invention;

[0025] Figure 5 This is a schematic diagram of the inner wall structure of the filter assembly in this invention;

[0026] Figure 6 This is a schematic diagram of the connection structure between the inner ring and the outer ring in this invention;

[0027] Figure 7 This is a schematic diagram of the structure between the mounting bracket and the connecting plate in this invention;

[0028] Figure 8 This is a schematic diagram of the quick-release structure of the coarse filter screen in this invention.

[0029] The numbers on the map are:

[0030] 1. Box wall; 2. Rotating shaft; 3. Sealing mechanism;

[0031] 31. Stationary ring assembly; 311. Stationary ring mounting base; 312. Fixing bolt one; 313. Sealing groove one; 314. Sealing ring; 315. Stationary ring; 316. Sealing groove two; 317. Sealing ring one;

[0032] 32. Rotating ring assembly; 321. Fixing base; 322. Fixing bolt two; 323. Sealing groove three; 324. Sealing ring two; 325. Compensating spring; 326. Rotating ring mounting base; 327. Rotating ring; 328. Microhole;

[0033] 33. Filter assembly; 331. Inner ring; 332. Outer ring; 333. Cylinder; 334. Mounting bracket; 335. Connecting plate; 336. Slotted; 337. Sliding bracket; 338. Coarse filter screen; 339. Mounting slot; 3310. Fastening spring; 3311. Moving block; 3312. Insert rod; 3313. Toggle rod; 3314. Slide groove; 3315. Fine filter screen; 3316. Support; 3317. Rotating rod; 3318. Backwash blade; 3319. Bevel gear; 3320. Bevel gear ring. Detailed Implementation

[0034] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0035] Reference Figure 1-8As shown, a variable distribution porous end face mechanical seal structure includes a housing wall 1 and a rotating shaft 2 rotatably mounted on the housing wall 1. A sealing mechanism 3 is fixedly mounted on the housing wall 1 on the outer side of the rotating shaft 2. The sealing mechanism 3 consists of a stationary ring assembly 31, a rotating ring assembly 32, and a filter assembly 33. The stationary ring assembly 31 includes a stationary ring mounting seat 311 fixed on the housing wall 1, and a stationary ring 315 is fixed inside the stationary ring mounting seat 311. The rotating ring assembly 32 includes a fixed seat 321 fixed to the rotating shaft 2, and a slidably compensated rotating ring 327 is provided on the fixed seat 321. One end of the rotating ring 327 abuts against the stationary ring 315, and a plurality of micropores 328 with variable distribution are opened on the end of the rotating ring 327 facing the stationary ring 315. The filter assembly 33 is provided with a self-cleaning coarse filter screen 338 and a fine filter screen 3315.

[0036] Furthermore, a sealing mechanism 3 is provided, in which a compensating spring 325 ensures that the moving ring 327 and the stationary ring 315 are always tightly fitted, compensating for wear or axial displacement and preventing leakage from the gap between the mating surfaces. The variable-distribution micropores 328 on the surface of the moving ring 327 effectively optimize the fluid film on the mating surface, reducing friction and wear while improving the uniformity of the sealing pressure, further enhancing the sealing effect. Simultaneously, the self-cleaning coarse filter 338 and fine filter 3315 work together to achieve two-stage filtration, fully ensuring the cleanliness of the medium entering the sealing end face, preventing excessive fixed particles from exceeding the self-cleaning limit, and effectively reducing the possibility of seal failure and leakage.

[0037] Reference Figure 3 As shown, specifically in this embodiment, the stationary ring assembly 31 further includes several fixing bolts 312 that are threadedly connected to the box wall 1, and the stationary ring mounting base 311 is fixedly connected to the box wall 1 through several fixing bolts 312.

[0038] Reference Figure 3 As shown, specifically in this embodiment, the stationary ring mounting base 311 has a plurality of sealing grooves 313 at one end near the box wall 1, and each of the plurality of sealing grooves 313 is provided with a sealing ring 314 for sealing. The outer surface of the stationary ring 315 has a sealing groove 316, and the sealing groove 316 is provided with a sealing ring 317 for sealing.

[0039] Furthermore: The stationary ring mounting base 311 is rigidly connected to the housing wall 1 by fixing bolt 312 and remains stationary throughout the process, serving only as a fixed reference surface for the sealing system. The stationary ring 315 is fixed inside the stationary ring mounting base 311, and its end face is tightly fitted with the end face of the rotating ring 327, forming the core contact surface of the seal. Through the rotation of the rotating ring 327, it cooperates with the stationary ring 315 to form the core contact surface of the seal.

[0040] The sealing ring 314 of sealing groove 1 313 and the sealing ring 317 of sealing groove 2 316 respectively block the gap leakage between stationary ring mounting base 311 and box wall 1, and between stationary ring 315 and mounting base 311, ensuring no leakage in stationary parts.

[0041] Reference Figure 4 As shown, specifically in this embodiment, the rotating ring assembly 32 includes several fixing bolts 322 disposed on the fixed seat 321. The fixed seat 321 is sleeved on the surface of the rotating shaft 2, and the fixed seat 321 is fixedly connected to the rotating shaft 2 through the fixing bolts 322. A rotating ring mounting seat 326 is slidably mounted on the right end surface of the fixed seat 321, and the rotating ring 327 is fixedly mounted on the rotating ring mounting seat 326. A compensating spring 325 is fixedly connected between the rotating ring mounting seat 326 and the fixed seat 321.

[0042] Furthermore, in the rotating ring assembly 32, the fixed seat 321 is rigidly connected to the rotating shaft 2 via a second fixing bolt 322, allowing the entire assembly to rotate synchronously with the rotating shaft 2. A compensating spring 325 automatically drives the rotating ring mounting seat 326 to move the rotating ring 327 to contact the stationary ring 315. The rotating ring 327, rotating with the rotating shaft 2, prevents media leakage through its contact surface with the stationary ring 315, thus acting as the sealing actuator. The compensating spring 325 automatically compensates for wear between the rotating ring 327 and the stationary ring 315, ensuring a consistently tight contact surface and preventing seal failure. Simultaneously, the variable distribution micropores 328 on the end face of the rotating ring 327 optimize the fluid film distribution on the contact surface, forming a stable liquid film, reducing friction and wear between the rotating and stationary rings 315 and 327, and effectively improving the uniformity of the sealing pressure.

[0043] Reference Figure 4 As shown, specifically in this embodiment, a sealing groove 323 is provided on the inner end of the fixing base 321, and a sealing ring 324 for sealing is provided inside the sealing groove 323.

[0044] Furthermore, the sealing ring 324 of the sealing groove 323 blocks the leakage of the gap between the fixed seat 321 and the rotating shaft 2, preventing the medium from seeping in from the connection seam between the rotating shaft 2 and the fixed seat 321.

[0045] Reference Figure 5-8As shown, specifically in this embodiment, the filter assembly 33 includes an inner ring 331 fixedly mounted on a fixed base 321, and a cylindrical body 333 fixedly mounted on a stationary ring mounting base 311. An outer ring 332 is provided on the outer side of the inner ring 331, and the right end of the outer ring 332 is rotatably connected to the cylindrical body 333. The surface of the outer ring 332 is provided with several slots 336, and several sets of mounting brackets 334 and connecting plates 335 are fixedly connected between the stationary ring mounting base 311 and the outer ring 332. The mounting brackets 334 and connecting plates 335 are staggered and connected end to end. The coarse filter screen 338 is disposed inside the mounting bracket 334 and is detachable.

[0046] Furthermore, the filter assembly 33 achieves graded filtration by coarse filter screen 338 and fine filter screen 3315 working together, effectively blocking impurities from entering the sealing end face, reducing scratches and wear on the contact surface from the source, avoiding excessive fixed particles that exceed the self-cleaning limit, and effectively reducing the possibility of seal failure and leakage.

[0047] Reference Figure 5-8 As shown, specifically in this embodiment, a sliding frame 337 is slidably connected inside the mounting frame 334. The coarse filter screen 338 is fixedly installed on the sliding frame 337, and a mounting groove 339 and a sliding groove 3314 communicating with the mounting groove 339 are provided on one side of the sliding frame 337. A fastening spring 3310 is fixedly connected inside the mounting groove 339. A moving block 3311 is fixedly connected to one end of the fastening spring 3310. An insert rod 3312 and a lever 3313 are fixedly connected to the surface of the moving block 3311. The top end of the insert rod 3312 passes through the sliding frame 337 and is engaged with the mounting frame 334. One end of the lever 3313 extends out through the sliding groove 3314.

[0048] Furthermore, the coarse filter screen 338 rotates with the fixed seat 321 in the rotating ring assembly 32, effectively preventing impurities from adhering to the filter screen. At the same time, the centrifugal force of rotation can throw out the impurities on the filter screen. Meanwhile, the coarse filter screen 338 adopts a detachable design. By pressing the lever 3313, the insertion rod 3312 can be disengaged from the locking position, and the sliding bracket 337 can be pulled out, which is convenient for manual and quick cleaning or replacement, and maintenance is convenient.

[0049] Reference Figure 5-8As shown, specifically in this embodiment, a fine filter screen 3315 is fixedly connected to the inner wall of the cylinder 333, and the lower end of the fine filter screen 3315 is rotatably connected to the fixed base 321. Several sets of brackets 3316 are fixedly connected to the inner wall of the cylinder 333 on the right side of the fine filter screen 3315. Rotating rods 3317 are rotatably installed on each of the several sets of brackets 3316. Backlash blades 3318 are fixedly installed on the rotating rods 3317. One end of the rotating rod 3317 away from the fixed base 321 is rotatably connected to the cylinder 333. The other end of the rotating rod 3317 is fixedly connected to a bevel gear 3319. Several bevel gears 3319 mesh with bevel gear rings 3320 fixedly installed on the fixed base 321.

[0050] Furthermore, as the fine filter screen 3315 rotates with the fixed base 321, the top bevel gear ring 3320 rotates accordingly. The bevel gear ring 3320 then meshes with the bevel gears 3319 at the ends of multiple rotating rods 3317, thereby driving all rotating rods 3317 to rotate. This causes the backwash blades 3318 to agitate the medium at high speed on the right side of the fine filter screen 3315, generating eddies and reverse flushing force. This washes away the fine impurities trapped by the fine filter screen 3315, preventing the filter screen from clogging. This achieves automatic and continuous cleaning during operation, effectively reducing the risk of impurities entering due to filter screen failure, and indirectly extending the replacement cycle of the sealing components. Moreover, the power for driving all comes from the rotating shaft 2, requiring no external energy or control system.

[0051] The working principle of this invention is as follows: the sealing mechanism 3 effectively ensures the sealing effect between the rotating shaft 2 and the box wall 1, preventing liquid from flowing out from the gap between the box wall 1 and the rotating shaft 2.

[0052] In the stationary ring assembly 31, the stationary ring mounting base 311 is rigidly connected to the box wall 1 by fixing bolt 312. The stationary ring 315 is fixed in the stationary ring mounting base 311, and its end face is tightly fitted with the end face of the moving ring 327. The sealing ring 314 of the sealing groove 313 and the sealing ring 317 of the sealing groove 316 respectively block the gap leakage between the stationary ring mounting base 311 and the box wall 1, and between the stationary ring 315 and the mounting base 311, ensuring that there is no leakage in the stationary part.

[0053] In the rotating ring assembly 32, the fixed seat 321 is rigidly connected to the rotating shaft 2 via a second fixing bolt 322, allowing the entire assembly to rotate synchronously with the rotating shaft 2. A compensating spring 325 automatically drives the rotating ring mounting seat 326 to move the rotating ring 327 to contact the stationary ring 315. The rotating ring 327, rotating with the rotating shaft 2, prevents media leakage through its contact surface with the stationary ring 315, thus acting as the sealing actuator. The compensating spring 325 automatically compensates for wear between the rotating ring 327 and the stationary ring 315, ensuring a consistently tight contact surface and preventing seal failure. Simultaneously, the variable distribution micropores 328 on the end face of the rotating ring 327 optimize the fluid film distribution on the contact surface, forming a stable liquid film, reducing friction and wear between the rotating and stationary rings, and effectively improving the uniformity of the sealing pressure. The sealing ring 324 in the sealing groove 323 blocks leakage from the gap between the fixed seat 321 and the rotating shaft 2, preventing media from seeping in from the connection seam between the rotating shaft 2 and the fixed seat 321.

[0054] Finally, the filter assembly 33 achieves graded filtration by coarse filter screen 338 and fine filter screen 3315, effectively blocking impurities from entering the sealing end face, reducing scratches and wear on the contact surface from the source, avoiding too many fixed particles that exceed the self-cleaning limit, and effectively reducing the possibility of seal failure and leakage.

[0055] When the rotating ring assembly 32 rotates with the rotating shaft 2, the coarse filter screen 338 rotates with the fixed seat 321 in the rotating ring assembly 32, effectively preventing impurities from adhering to the filter screen. At the same time, the centrifugal force of rotation can throw out the impurities on the filter screen. Meanwhile, the coarse filter screen 338 adopts a detachable design. By pressing the lever 3313, the insertion rod 3312 is disengaged from the locking position, and the sliding bracket 337 can be pulled out, which is convenient for manual and quick cleaning or replacement, and maintenance is convenient.

[0056] As the fixed base 321 rotates, the top bevel ring 3320 of the fine filter screen 3315 rotates, and the bevel ring 3320 then meshes with the bevel gears 3319 at the ends of the multiple rotating rods 3317, thereby driving all the rotating rods 3317 to rotate. This causes the backwash blades 3318 to agitate the medium at high speed on the right side of the fine filter screen 3315, generating eddies and reverse flushing force, which wash away the fine impurities trapped by the fine filter screen 3315 and prevent the filter screen from clogging.

[0057] The foregoing has shown and described 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 embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A variable distribution porous face mechanical seal structure, characterized by, The utility model provides a box wall (1) and rotation installation pivot (2) on box wall (1), the outside of pivot (2) is provided with fixedly installed sealing mechanism (3) on box wall (1), sealing mechanism (3) is by static ring subassembly (31), dynamic ring subassembly (32) and filter subassembly (33) are formed, static ring subassembly (31) includes the static ring mounting seat (311) fixed on box wall (1), and the static ring (315) is fixedly installed on static ring mounting seat (311) inside, dynamic ring subassembly (32) includes the fixed seat (321) fixed with pivot (2), and the fixed seat (321) is provided with the dynamic ring (327) of slidable compensation, the one end of dynamic ring (327) is in abutment with static ring (315), and the one end towards static ring (315) of dynamic ring (327) is set up with several micro -holes (328) of variable distribution, the inside of filter subassembly (33) is provided with the self -cleaning coarse filter screen (338) and fine filter screen (3315).

2. A variable distribution porous face mechanical seal structure according to claim 1, wherein: The static ring subassembly (31) further includes a plurality of fixed bolts (312) threadedly connected with the box wall (1), and the static ring mounting seat (311) is fixedly connected between the box wall (1) through the plurality of fixed bolts (312).

3. A variable distribution porous face mechanical seal structure according to claim 2, wherein: The static ring mounting seat (311) is provided with a plurality of sealing grooves (313) at one end close to the box wall (1), and the plurality of sealing grooves (313) are provided with sealing rings (314) inside for sealing.

4. A variable distribution porous face mechanical seal structure according to claim 1, wherein: The dynamic ring subassembly (32) includes a plurality of fixed bolts (322) provided on the fixed seat (321), the fixed seat (321) is sleeved on the surface of the pivot (2), and the fixed seat (321) is fixedly connected between the pivot (2) through the fixed bolts (322). The fixed seat (321) is provided with a dynamic ring mounting seat (326) at the right end surface, the dynamic ring (327) is fixedly installed on the dynamic ring mounting seat (326), and the dynamic ring mounting seat (326) is fixedly connected between the fixed seat (321) through the compensation spring (325).

5. A variable distribution porous face mechanical seal structure according to claim 4, wherein: The fixed seat (321) is provided with a sealing groove (323) at the inner side end, and the sealing groove (323) is provided with a sealing ring (324) inside for sealing.

6. A variable distribution porous face mechanical seal structure according to claim 1, wherein: The filter subassembly (33) includes an inner ring (331) fixedly installed on the fixed seat (321), and a cylinder (333) fixedly installed on the static ring mounting seat (311), the outer side of the inner ring (331) is provided with an outer ring (332), and the right end of the outer ring (332) is rotatably connected with the cylinder (333). The surface of the outer ring (332) is provided with a plurality of grooves (336), and a plurality of groups of mounting racks (334) and connecting plates (335) are fixedly connected between the static ring mounting seat (311) and the outer ring (332), a plurality of mounting racks (334) and connecting plates (335) are staggered and connected end to end, and the coarse filter screen (338) is arranged inside the mounting rack (334) and is detachably arranged.

7. A variable distribution porous face mechanical seal structure according to claim 6, wherein: The inside of the mounting rack (334) is slidably connected with a sliding rack (337), the coarse filter screen (338) is fixedly installed on the sliding rack (337), and one side of the sliding rack (337) is provided with a mounting groove (339) and a sliding groove (3314) communicated with the mounting groove (339); The inside of the mounting groove (339) is fixedly connected with a fastening spring (3310), one end of the fastening spring (3310) is fixedly connected with a moving block (3311), the surface of the moving block (3311) is fixedly connected with a plug rod (3312) and a lever (3313), the top end of the plug rod (3312) penetrates out of the sliding rack (337) and is clamped with the mounting rack (334), and one end of the lever (3313) extends out through the sliding groove (3314).

8. A variable distribution porous face mechanical seal structure according to claim 7, wherein: The inner wall of the cylinder body (333) is fixedly connected with a fine filter screen (3315), and the lower end of the fine filter screen (3315) is rotatably connected with the fixed seat (321), and the right side of the fine filter screen (3315) is provided with a plurality of groups of supports (3316) fixedly connected to the inner wall of the cylinder body (333); A plurality of groups of rotating rods (3317) are rotatably installed on the supports (3316), the rotating rods (3317) are fixedly installed with backflushing blades (3318), one end of the rotating rod (3317) away from the fixed seat (321) is rotatably connected with the cylinder body (333), and the other end of the rotating rod (3317) is fixedly connected with a bevel gear (3319), and a plurality of bevel gears (3319) are meshed with a bevel gear ring (3320) fixedly installed on the fixed seat (321).

Images