Mechanical seal
By installing stainless steel filter and activated carbon filter on the stationary seat of the mechanical seal, impurities in the fluid are filtered and adsorbed, and deflection and bending are prevented by designing the spring fixation method, the leakage problems caused by the entry of impurities in the mechanical seal and the reduction of spring elasticity are solved, achieving a more efficient sealing effect.
Patent Information
- Application Number
- CN202421318489.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-11
- Publication Date
- 2025-03-04
- Estimated Expiration
- 2034-06-11
AI Technical Summary
When existing mechanical seals are used, impurities enter the sealing surface, resulting in scratches on the sealing surface and the water film cannot be formed, causing fluid leakage; at the same time, the spring is prone to deflection and bending in a high-pressure environment, resulting in a decrease in elastic force and also causing fluid leakage.
A mechanical seal is designed, with a stainless steel filter and an activated carbon filter on the stationary seat to filter and adsorb impurities in the fluid to prevent impurities from entering the sealing surface; at the same time, the spring sleeve is installed on the movable column, and the movable column inserts the movable hole and is slidly connected to the movable seat, and the left and right ends of the spring are respectively fixedly connected to the movable seat and the compression seat to prevent the spring from deflecting and bending.
It effectively prevents impurities from entering the sealing surface, avoids the problem of scratches on the sealing surface and the inability to form water film, and reduces fluid leakage; at the same time, by preventing the spring from deflecting and bent, the spring's elasticity is maintained, and fluid leakage caused by the reduction of elasticity is avoided.
Smart Images
Figure CN222559184U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of mechanical seals, in particular to a mechanical seal. Background Art
[0002] Mechanical seal refers to a device that prevents fluid leakage by at least one pair of end faces perpendicular to the axis of rotation, which are kept in contact and slide relative to each other under the action of fluid pressure and the elastic force of the compensation mechanism and the cooperation of auxiliary seals. Mechanical seal is a shaft sealing device for rotating fluid machinery, commonly used in centrifugal pumps, centrifuges, reactors, compressors and other equipment.
[0003] When using existing mechanical seals, some fluids contain impurities, which can easily flow into the sealing surface between the dynamic ring and the static ring and scratch the sealing surface, which can cause the water film to fail to form and cause fluid leakage. When the spring of a mechanical seal works in a high-pressure environment for a long time, the spring is prone to deflection and bending, which can reduce the spring force and cause fluid leakage. Utility Model Content
[0004] The purpose of the utility model is to provide a mechanical seal to solve the problems raised in the above background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a mechanical seal, comprising a static ring, a static seat fixedly arranged on the left side of the static ring, a dynamic ring, a dynamic seat fixedly arranged on the right side of the dynamic ring, and a clamping assembly arranged on the right side of the dynamic seat, wherein the static ring is located on the left side of the dynamic ring and is in contact with the dynamic ring, and is characterized in that: a filter assembly is provided on the static seat, and the filter assembly comprises a stainless steel filter arranged on the outside of the static seat, and an activated carbon filter arranged between the static seat and the dynamic seat, the stainless steel filter is located on the outside of the activated carbon filter, and the right ends of the stainless steel filter and the activated carbon filter are both located on the right side of the right end of the static ring, the clamping assembly comprises a clamping seat located on the right side of the dynamic seat, a sleeve fixedly arranged on the left side of the clamping seat, a plurality of movable columns fixedly arranged on the left side of the clamping seat, and a spring sleeved on the movable column, the sleeve is inserted into the inner hole of the dynamic seat and is slidably connected to the dynamic seat, a plurality of movable holes matching the movable columns are opened on the right side wall of the dynamic seat, the movable column is inserted into the movable hole and is slidably connected to the dynamic seat, and the left and right ends of the spring are respectively fixedly connected to the dynamic seat and the clamping seat.
[0006] Preferably, the stainless steel filter screen is mounted on the stationary seat and fixedly connected to the stationary seat, the activated carbon filter screen is mounted on the stationary ring and the moving ring, slots are provided on the side walls of the stationary seat and the moving seat facing each other, and the left and right ends of the activated carbon filter are respectively inserted into the slots on the stationary seat and the moving seat to be in contact with and connected to the two.
[0007] Preferably, the clamping assembly also includes a plurality of studs, a plurality of screw holes are opened on the right side wall of the moving seat, a plurality of through holes are opened on the left and right sides of the clamping seat, the studs are inserted into the through holes and then screwed into the screw holes to be fixedly connected to the moving seat, an anti-slip disk is fixedly arranged on the right side of the stud, the diameter of the anti-slip disk is larger than the diameter of the stud, an anti-slip groove with a through hole and matching the anti-slip disk is opened on the right side wall of the clamping seat, the anti-slip disk is located inside the anti-slip groove and is slidably connected to the clamping seat.
[0008] Preferably, a plurality of magnets A are fixedly provided on the right side of the moving seat, and a plurality of magnets B are fixedly provided on the left side of the pressing seat. The positions of the magnets A and B coincide with each other, and the magnetic poles of the magnets A and B are the same.
[0009] Preferably, the clamping assembly further comprises an elastic sleeve sleeved on the spring, and the left and right ends of the elastic sleeve are respectively fixedly connected to the movable seat and the clamping seat.
[0010] Preferably, a sealing sleeve is fixedly provided on the side wall of the inner hole of the movable seat, and the plug sleeve is slidably connected to the sealing sleeve.
[0011] Preferably, the elastic sleeve and the sealing sleeve are both made of fluororubber.
[0012] The beneficial effects of the utility model are as follows: when the utility model is used, since a stainless steel filter is provided on the outside of the stationary seat, an activated carbon filter is provided between the stationary seat and the moving seat, the right ends of the stainless steel filter and the activated carbon filter are both located on the right side of the right end of the stationary ring, the stainless steel filter and the activated carbon filter protect the sealing surface of the stationary ring and the moving ring, the stainless steel filter can filter larger particle impurities in the fluid, and the activated carbon filter can absorb smaller particle impurities in the fluid, and together they play a role in preventing particle impurities from entering the sealing surface; since the spring sleeve is provided on the movable column, the movable column is inserted into the movable hole and slidably connected to the moving seat, and the left and right ends of the spring are respectively connected to the moving seat and the pressing seat Fixed connection, when the spring is compressed and rebounds, the movable column slides inside the movable hole, guiding the spring in a straight line, thereby preventing the spring from deflecting and bending; in summary, the utility model has the beneficial effects of preventing particulate impurities from entering the sealing surface and preventing the spring from deflecting and bending, and solves the problem that impurities can easily enter the sealing surfaces between the moving ring and the static ring after flowing, scratching the sealing surfaces, resulting in the inability to form a water film and causing fluid leakage; when the spring of the mechanical seal works in an environment with high pressure for a long time, the spring is prone to deflect and bend, resulting in a reduction in the spring elastic force and causing fluid leakage. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Attached Figure 1 It is a front view of the utility model;
[0014] Attached Figure 2 It is a schematic diagram of the left structure of the utility model;
[0015] Attached Figure 3 It is a schematic diagram of the right side structure of the utility model;
[0016] Attached Figure 4 It is a left view of the utility model;
[0017] Attached Figure 5 For attachment Figure 4 Section view at AA in the middle.
[0018] In the figure: static ring 1, static seat 2, dynamic ring 3, dynamic seat 4, stainless steel filter 5, activated carbon filter 6, clamping seat 7, plug sleeve 8, movable column 9, spring 10, movable hole 11, slot 12, stud 13, screw hole 14, through hole 15, anti-slip disk 16, anti-slip groove 17, magnet A 18, magnet B 19, elastic sleeve 20, sealing sleeve 21. DETAILED DESCRIPTION
[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.
[0020] like Figure 1-5As shown, the utility model discloses a mechanical seal, comprising a stationary ring 1, a stationary seat 2 fixedly arranged on the left side of the stationary ring 1, a dynamic ring 3, a dynamic seat 4 fixedly arranged on the right side of the dynamic ring 3, and a clamping assembly arranged on the right side of the dynamic seat 4, wherein the stationary ring 1 is located on the left side of the dynamic ring 3 and is in contact with the dynamic ring 3, a filter assembly is arranged on the stationary seat 2, and the filter assembly comprises a stainless steel filter screen 5 arranged on the outside of the stationary seat 2, and an activated carbon filter screen 6 arranged between the stationary seat 2 and the dynamic seat 4, wherein the stainless steel filter screen 5 is located on the outside of the activated carbon filter screen 6, and the stainless steel filter screen 5 and the activated carbon filter screen 6 are on the right side of the stationary seat 4. Both ends are located on the right side of the right end of the static ring 1, and the clamping assembly includes a clamping seat 7 located on the right side of the dynamic seat 4, a sleeve 8 fixedly arranged on the left side of the clamping seat 7, a plurality of movable columns 9 fixedly arranged on the left side of the clamping seat 7, and a spring 10 sleeved on the movable column 9. The sleeve 8 is inserted into the inner hole of the dynamic seat 4 and is slidably connected to the dynamic seat 4. A plurality of movable holes 11 matching the movable columns 9 are opened on the right side wall of the dynamic seat 4. The movable columns 9 are inserted into the movable holes 11 and are slidably connected to the dynamic seat 4. The left and right ends of the spring 10 are fixedly connected to the dynamic seat 4 and the clamping seat 7 respectively. When the utility model is used, since a stainless steel filter screen 5 is provided on the outside of the static seat 2, an activated carbon filter screen 6 is provided between the static seat 2 and the dynamic seat 4, the right ends of the stainless steel filter screen 5 and the activated carbon filter screen 6 are both located on the right side of the right end of the static ring 1, and the stainless steel filter screen 5 and the activated carbon filter screen 6 both protect the sealing surface of the static ring 1 and the dynamic ring 3, the stainless steel filter screen 5 can filter larger particle impurities in the fluid, and the activated carbon filter screen 6 can absorb smaller particle impurities in the fluid, and together play a role in preventing particle impurities from entering the sealing surface; since the spring 10 is sleeved on the movable column 9, the movable column 9 is inserted into the movable hole 11 and is slidably connected to the dynamic seat 4, and the left and right ends of the spring 10 are respectively fixedly connected to the dynamic seat 4 and the pressing seat 7 Then, when the spring 10 is compressed and rebounds, the movable column 9 slides inside the movable hole 11, guiding the spring 10 in a straight line, thereby preventing the spring 10 from deflecting and bending. In summary, the utility model has the beneficial effects of preventing particulate impurities from entering the sealing surface and preventing the spring 10 from deflecting and bending, and solves the problem that impurities can easily enter the sealing surfaces between the dynamic ring 3 and the static ring 1 after flowing, scratching the sealing surfaces, resulting in the inability to form a water film and causing fluid leakage. When the mechanically sealed spring 10 works in a high-pressure environment for a long time, the spring 10 is prone to deflection and bending, resulting in a reduction in the elastic force of the spring 10, leading to fluid leakage.
[0021] Preferably, the stainless steel filter 5 is sleeved on the stationary seat 2 and fixedly connected to the stationary seat 2, the activated carbon filter 6 is sleeved on the stationary ring 1 and the moving ring 3, the stationary seat 2 and the moving seat 4 are provided with slots 12 on one side wall facing each other, and the left and right ends of the activated carbon filter 6 are respectively inserted into the slots 12 on the stationary seat 2 and the moving seat 4 to contact and connect with the two. Since the left and right ends of the activated carbon filter 6 are respectively inserted into the slots 12 on the stationary seat 2 and the moving seat 4 to contact and connect with the two, the activated carbon filter 6 is installed to prevent it from falling off.
[0022] Preferably, the clamping assembly further comprises a plurality of studs 13, a plurality of screw holes 14 are provided on the right side wall of the movable seat 4, a plurality of through holes 15 are provided on the left and right sides of the clamping seat 7, the stud 13 is inserted into the through hole 15 and then screwed into the screw hole 14 to be fixedly connected to the movable seat 4, an anti-slip disk 16 is fixedly provided on the right side of the stud 13, the diameter of the anti-slip disk 16 is larger than the diameter of the stud 13, an anti-slip groove 17 which passes through the through hole 15 and matches the anti-slip disk 16 is provided on the right side wall of the clamping seat 7, the anti-slip disk 16 is located inside the anti-slip groove 17 and is slidably connected to the clamping seat 7. Since the diameter of the anti-slip disk 16 is larger than the diameter of the stud 13, the anti-slip disk 16 is located inside the anti-slip groove 17 and is slidably connected to the clamping seat 7, which plays a role in preventing the clamping ring from falling off; when the spring 10 is compressed and rebounded, and the movable column 9 slides inside the movable hole 11, the anti-slip disk 16 will slide inside the anti-slip groove 17, which plays a role in avoiding hindering the movement of the clamping seat 7.
[0023] Preferably, a plurality of magnets A18 are fixedly provided on the right side of the movable seat 4, and a plurality of magnets B19 are fixedly provided on the left side of the pressing seat 7, and the positions of the magnets A18 and B19 coincide with each other, and the poles of the magnets A18 and B19 are the same. Since the positions of the magnets A18 and B19 coincide with each other, and the poles of the magnets A18 and B19 are the same, when the fluid pressure is too large, the spring 10 will be over-compressed, and at this time, the magnets A18 and B19 will approach each other and repel each other, and the repulsive force can offset part of the pressure, thereby preventing the spring 10 from fatigue.
[0024] Preferably, the clamping assembly further comprises an elastic sleeve 20 sleeved on the spring 10, and the left and right ends of the elastic sleeve 20 are respectively fixedly connected to the moving seat 4 and the clamping seat 7. Since the elastic sleeve 20 is sleeved on the spring 10, the left and right ends of the elastic sleeve 20 are respectively fixedly connected to the moving seat 4 and the clamping seat 7, which plays a role in blocking the fluid and preventing the elasticity of the spring 10 from decreasing due to heat.
[0025] Preferably, a sealing sleeve 21 is fixedly arranged on the side wall of the inner hole of the moving seat 4, and the plug sleeve 8 is slidably connected to the sealing sleeve 21. Since the plug sleeve 8 is slidably connected to the sealing sleeve 21, a sealing effect is played.
[0026] Preferably, the elastic sleeve 20 and the sealing sleeve 21 are both made of fluororubber. Since the elastic sleeve 20 and the sealing sleeve 21 are both made of fluororubber, they have the characteristics of high corrosion resistance and high wear resistance.
[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A mechanical seal, comprising a stationary ring (1), a stationary seat (2) fixedly arranged on the left side of the stationary ring (1), a dynamic ring (3), a dynamic seat (4) fixedly arranged on the right side of the dynamic ring (3), and a clamping assembly arranged on the right side of the dynamic seat (4), wherein the stationary ring (1) is located on the left side of the dynamic ring (3) and is in contact with the dynamic ring (3), and characterized in that: The stationary seat (2) is provided with a filter assembly, the filter assembly comprising a stainless steel filter screen (5) arranged on the outside of the stationary seat (2), an activated carbon filter screen (6) arranged between the stationary seat (2) and the moving seat (4), the stainless steel filter screen (5) being located on the outside of the activated carbon filter screen (6), the right ends of the stainless steel filter screen (5) and the activated carbon filter screen (6) being both located on the right side of the right end of the stationary ring (1), the clamping assembly comprising a clamping seat (7) located on the right side of the moving seat (4), a plug sleeve ( 8), a plurality of movable columns (9) fixedly arranged on the left side of the clamping seat (7), and a spring (10) sleeved on the movable column (9), the sleeve (8) is inserted into the inner hole of the movable seat (4) and is slidably connected to the movable seat (4), a plurality of movable holes (11) matching the movable columns (9) are opened on the right side wall of the movable seat (4), the movable columns (9) are inserted into the movable holes (11) and are slidably connected to the movable seat (4), and the left and right ends of the spring (10) are respectively fixedly connected to the movable seat (4) and the clamping seat (7).
2. A mechanical seal according to claim 1, characterized in that: The stainless steel filter (5) is sleeved on the stationary seat (2) and fixedly connected to the stationary seat (2); the activated carbon filter (6) is sleeved on the stationary ring (1) and the movable ring (3); slots (12) are provided on the side walls of the stationary seat (2) and the movable seat (4) facing each other; the left and right ends of the activated carbon filter (6) are respectively inserted into the slots (12) on the stationary seat (2) and the movable seat (4) to contact and connect with the two.
3. A mechanical seal according to claim 2, characterized in that: The clamping assembly also includes a plurality of studs (13). A plurality of screw holes (14) are provided on the right side wall of the movable seat (4). A plurality of through holes (15) are provided on the left and right sides of the clamping seat (7). After the studs (13) are inserted into the through holes (15), they are screwed into the screw holes (14) and fixedly connected to the movable seat (4). An anti-slip disk (16) is fixedly provided on the right side of the studs (13). The diameter of the anti-slip disk (16) is larger than the diameter of the studs (13). A through hole (15) and an anti-slip groove (17) matching the anti-slip disk (16) are provided on the right side wall of the clamping seat (7). The anti-slip disk (16) is located inside the anti-slip groove (17) and is slidably connected to the clamping seat (7).
4. A mechanical seal according to claim 3, characterized in that: A plurality of magnets A (18) are fixedly arranged on the right side of the movable seat (4), and a plurality of magnets B (19) are fixedly arranged on the left side of the clamping seat (7). The positions of the magnets A (18) and the magnets B (19) coincide with each other, and the magnetic poles of the magnets A (18) and B (19) are the same.
5. A mechanical seal according to claim 4, characterized in that: The clamping assembly further comprises an elastic sleeve (20) sleeved on the spring (10), and the left and right ends of the elastic sleeve (20) are respectively fixedly connected to the movable seat (4) and the clamping seat (7).
6. A mechanical seal according to claim 5, characterized in that: A sealing sleeve (21) is fixedly arranged on the side wall of the inner hole of the movable seat (4), and the plug sleeve (8) is slidably connected to the sealing sleeve (21).
7. A mechanical seal according to claim 6, characterized in that: The elastic sleeve (20) and the sealing sleeve (21) are both made of fluororubber.