CN114517835A - Integrated double-end-face mechanical sealing structure - Google Patents
Integrated double-end-face mechanical sealing structure Download PDFInfo
- Publication number
- CN114517835A CN114517835A CN202210111868.3A CN202210111868A CN114517835A CN 114517835 A CN114517835 A CN 114517835A CN 202210111868 A CN202210111868 A CN 202210111868A CN 114517835 A CN114517835 A CN 114517835A
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- ring
- medium
- atmosphere
- shaft sleeve
- connecting seat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/3436—Pressing means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/3404—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Sealing (AREA)
Abstract
The invention provides a cartridge type double-end-face mechanical sealing structure, which belongs to the technical field of fluid sealing and aims to solve the problems that the leakage amount of the existing mechanical sealing is too high, the service life is not enough and the equipment maintenance cost is increased; the stroke of the atmosphere sealing element and the medium sealing element in the cavity where the atmosphere sealing element and the medium sealing element are located is 7mm, elastic parts are arranged on two sides of the convex ring, the atmosphere sealing element comprises an atmosphere end rotating ring and an atmosphere end static ring, the atmosphere end rotating ring is fixed on the shaft sleeve through a second rotating pin, the atmosphere end static ring is arranged in the connecting seat in a sliding mode, the medium sealing element comprises a medium end rotating ring and a medium end static ring, the medium end rotating ring is fixed on the shaft sleeve through a first rotating pin, and the medium end static ring is arranged in the connecting seat in a sliding mode.
Description
Technical Field
The invention belongs to the technical field of fluid sealing, and particularly relates to a cartridge type double-end-face mechanical sealing structure.
Background
The mechanical seal is a device for preventing fluid leakage, which is formed by at least one pair of end faces perpendicular to the rotation axis, and the end faces are kept in fit and relatively slide under the action of fluid pressure and the elastic force (or magnetic force) of a compensation mechanism and the cooperation of an auxiliary seal.
In industrial production, a sand mill is used for producing pesticide suspending agents, seed coating agents, color pastes, industrial paints, roll steel materials, industrial preservatives and the like, the mechanical seal used on the sand mill ensures the production efficiency of industrial materials or agricultural materials, but the mechanical seal cannot achieve the condition of zero leakage amount in practical application, the leakage amount is not more than 5mL/h when the outer diameter of a shaft (or a shaft sleeve) is larger than 50mm and is not more than 3mL/h when the outer diameter of the shaft (or the shaft sleeve) is smaller than 50mm according to the specification of JB4127-85 mechanical seal technical conditions in China. The lower the leakage amount in the sand grinding machine, the higher the production efficiency, the overhigh leakage amount of the existing mechanical seal, the insufficient service life and the increased equipment maintenance cost.
In view of the above, research and improvement are made on the existing structure and defects, and a container type double-end mechanical sealing structure is provided to achieve the purpose of higher practical value.
Disclosure of Invention
In order to solve the technical problems, the invention provides a container type double-end-face mechanical sealing structure which is used for solving the problems that the existing mechanical sealing structure is too high in leakage amount, short in service life and increased in equipment maintenance cost.
The invention relates to a purpose and an effect of a container type double-end-face mechanical sealing structure, which are achieved by the following specific technical means:
a cartridge type double-end-face mechanical sealing structure comprises a shaft sleeve sleeved on a rotating shaft, wherein a connecting seat is arranged outside the shaft sleeve, a convex ring is formed in the middle of an inner ring of the connecting seat, a cavity distributed left and right is formed between the connecting seat and the shaft sleeve through the convex ring, and an atmospheric sealing element and a medium sealing element are respectively arranged inside the cavity;
the strokes of the atmosphere sealing element and the medium sealing element in the cavities are 7 mm;
elastic parts are arranged on two sides of the convex ring;
the atmosphere sealing element comprises an atmosphere end moving ring and an atmosphere end static ring, the atmosphere end moving ring is fixed on a shaft sleeve positioned at an atmosphere end through a second rotating pin, and the atmosphere end static ring is arranged in the connecting seat in a sliding mode and is abutted against the atmosphere end moving ring;
the medium sealing element comprises a medium end rotating ring and a medium end static ring, the medium end rotating ring is fixed on a shaft sleeve positioned at a medium end through a first rotating pin, and the medium end static ring is arranged in the connecting seat in a sliding mode and is abutted against the medium end rotating ring;
sealing liquid is added in a gap between the shaft sleeve and the connecting seat.
Furthermore, a flow guide ring is arranged in a gap between the connecting seat and the shaft sleeve, a cooling liquid inlet and a cooling liquid outlet are respectively arranged on the connecting seat, and the cooling liquid inlet and the cooling liquid outlet are both communicated with the gap.
Furthermore, the atmosphere end static ring is connected with the convex ring through a first anti-rotation pin, and the medium end static ring is connected with the convex ring through a second anti-rotation pin.
Furthermore, the medium end rotating ring is locked at the medium end on the shaft sleeve through a first rotating pin, the atmosphere end rotating ring is locked at the atmosphere end on the shaft sleeve through a second rotating pin, and a clamping ring is arranged between the first rotating pin and the medium end rotating ring.
Furthermore, a plurality of O-shaped rings are arranged between the connecting seat and the shaft sleeve.
Furthermore, the elastic component comprises a spring, a plurality of circumferentially distributed mounting holes are formed in the left side and the right side of the convex ring in the connecting seat, and the medium end static ring and the atmosphere end static ring are connected with the inner end wall of the corresponding mounting hole through the spring.
Further, the length of the spring in a free state is 23mm, the diameter of the spring is 6.5mm, and the number of effective turns is 11.
Further, a sealing gasket is arranged between the atmosphere end movable ring and the shaft sleeve.
Furthermore, the atmosphere end rotating ring and the medium end rotating ring are made of YG6 hard alloy, and the atmosphere end static ring and the medium end static ring are made of silicon carbide.
Compared with the prior art, the invention has the following beneficial effects:
the mechanical seal is designed according to the specific use condition of the sand grinding machine, the double-end-face mechanical seal structure is used according to the friction surface and the end face specific pressure opening design, and the specific rebound compensation stroke design of the atmosphere end static ring and the medium end static ring is adopted, so that the medium leakage amount is reduced, the abrasion of a friction pair is reduced, and the service life of the mechanical seal is prolonged to a certain extent; structurally, the friction pair is more reasonable in design and more compact and convenient to install, and the leakage amount per hour is lower than 2 mL/h.
Drawings
Fig. 1 is a schematic structural diagram of a cartridge type double-end mechanical sealing structure of the present invention.
Fig. 2 is a schematic end face structure diagram of a cartridge type double-end-face mechanical sealing structure of the invention.
Fig. 3 is a schematic structural view of the connecting socket of the present invention.
In the drawings, the corresponding relationship between the component names and the reference numbers is as follows:
1. a connecting seat; 2. sealing gaskets; 3. an atmosphere end moving ring; 4. an atmosphere-end stationary ring; 5. a first anti-rotation pin; 6. a spring; 7. a flow guide ring; 8. a media-terminating rotating ring; 9. a first rotation pin; 10. a medium-end stationary ring; 11. an O-shaped ring; 12. a coolant inlet; 13. a coolant outlet; 14. a shaft sleeve; 15. a second rotation pin; 16. a collar; 17. a compensation chamber; 18. a rotating shaft; 19. mounting holes; 20. a second anti-rotation pin; 21. a convex ring; 22. and (4) a leakage observation hole.
Detailed Description
The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example (b):
as shown in figures 1 to 3:
the invention provides a cartridge type double-end-face mechanical sealing structure, which comprises a shaft sleeve 14 sleeved on a rotating shaft 18, wherein a connecting seat 1 is arranged outside the shaft sleeve 14, a convex ring 21 is formed in the middle of the inner ring of the connecting seat 1, chambers which are distributed left and right are formed between the convex ring 21 and the shaft sleeve 14 by the connecting seat 1, the chambers are respectively a chamber close to an atmosphere end and a chamber close to a medium end, and an atmosphere sealing element and a medium sealing element are respectively arranged inside the chambers;
the travel of the atmospheric seal and the medium seal in the chamber is 7mm, and leaked medium can be collected and measured through the leakage observation hole 22.
Wherein, bulge loop 21 both sides are provided with elastomeric element, elastomeric element includes spring 6, the mounting hole 19 that a plurality of circumference distribute is all seted up to the bulge loop 21 left and right sides in the connecting seat 1, medium end quiet ring 10 all is connected through spring 6 rather than the mounting hole 19 inner end wall that corresponds with atmosphere end quiet ring 4, length is 23mm under spring 6's the free state, the diameter is 6.5mm, effective number of turns is 11, spring 6 is compressed to 16mm after installing, when medium end pressure is greater than atmospheric pressure, medium sealing member then can move to the atmosphere end, otherwise when medium end pressure is less than atmospheric pressure, atmosphere sealing member then can move to the medium end, when the pressure difference in both sides changes, the reseing of atmosphere sealing member or medium sealing member can be accelerated to spring 6, and make through spring 6 move quiet ring and be in the butt state always.
The atmosphere sealing element comprises an atmosphere end moving ring 3 and an atmosphere end static ring 4, the atmosphere end moving ring 3 is fixed on a shaft sleeve 14 positioned at an atmosphere end through a second rotating pin 15, the atmosphere end static ring 4 is arranged in the connecting seat 1 in a sliding mode and is abutted against the atmosphere end moving ring 3 through a spring 6, the atmosphere end moving ring 3 rotates along with a rotating shaft 18 through the shaft sleeve 14, and a liquid film is generated between the atmosphere end moving ring 3 and the atmosphere end static ring 4 in the rotating process to form sealing;
the medium sealing element comprises a medium end rotating ring 8 and a medium end static ring 10, the medium end rotating ring 8 is fixed on a shaft sleeve 14 located at a medium end through a first rotating pin 9, the medium end static ring 10 is arranged in the connecting seat 1 in a sliding mode and is abutted against the medium end rotating ring 8 through a spring 6, the medium end rotating ring 8 rotates along with a rotating shaft 18 through the shaft sleeve 14, and the surface of the medium end rotating ring 8 and the medium end static ring 10 rub to form a liquid film so as to play a sealing role.
Wherein, be provided with water conservancy diversion ring 7 in the clearance between connecting seat 1 and axle sleeve 14, be provided with coolant liquid import 12 and coolant liquid export 13 on the connecting seat 1 respectively, coolant liquid import 12 and coolant liquid export 13 all with the clearance intercommunication, can add the cooling sealing liquid to the mechanical seal middle part through coolant liquid import 12, water conservancy diversion ring 7 can guide the cooling sealing liquid evenly to flow in the clearance, increases the gas tightness.
The atmosphere end static ring 4 is connected with the convex ring 21 through the first anti-rotation pin 5, the medium end static ring 10 is connected with the convex ring 21 through the second anti-rotation pin 20, and the first anti-rotation pin 5 and the second anti-rotation pin 20 can limit the moving conditions of the atmosphere end static ring 4 and the medium end static ring 10, so that the atmosphere end static ring can only slide relative to the connecting seat 1.
The medium end rotating ring 8 is locked at a medium end of the shaft sleeve 14 through the first rotating pin 9, the atmosphere end rotating ring 3 is locked at an atmosphere end of the shaft sleeve 14 through the second rotating pin 15, the clamping ring 16 is arranged between the first rotating pin 9 and the medium end rotating ring 8, the first rotating pin 9 and the second rotating pin 15 are arranged, the medium end rotating ring 8 and the atmosphere end rotating ring 3 can be conveniently disassembled and assembled, and the clamping ring 16 increases the tightness of the two rotating rings.
Wherein, be provided with a plurality of O type circle 11 between connecting seat 1 and the axle sleeve 14, in this embodiment, O type circle 11 sets up respectively between connecting seat 1 and atmosphere end quiet ring 4, between connecting seat 1 and the quiet ring 10 of medium end, and between axle sleeve 14 and the atmosphere end rotating ring 3, between axle sleeve 14 and the medium end rotating ring 8, between connecting seat 1 and the equipment of external connection rather than, O type circle 11 set up the gas tightness that has increased between each part and be connected and the gas tightness of whole device, on connecting seat 1 and the axle sleeve 14 of different shapes, O type circle 11 can set up according to a plurality of gaps department that produce after it installed.
In the present embodiment, the sealing gasket 2 is disposed between the outer end surface of the atmosphere end rotating ring 3 and the end surface of the step portion formed by the shaft sleeve 14, so as to prevent the shaft sleeve 14 from being damaged by friction when external impurities enter the shaft sleeve 14 to cause the rotation of the shaft sleeve 14.
The atmosphere end moving ring 3 and the medium end moving ring 8 are made of YG6 hard alloy, the atmosphere end static ring 4 and the medium end static ring 10 are made of silicon carbide, and the friction pair is more excellent in performance due to the soft and hard matching of the materials of the moving and static rings, and meanwhile, the abrasion of the friction pair is reduced.
According to the specification of JB4127-85 "mechanical seal technical conditions", the cartridge type double-end mechanical seal structure provided in this embodiment was subjected to leakage and wear tests, using 100h of operation on a sander as a standard, by comparing the data of the leakage amount and the wear of the friction pair caused by different strokes of the friction pair (dynamic and static rings of the medium end and the atmosphere end) and the difference between the depth of the compensation chamber 17 and the compression amount of the spring 6, and the test results are shown in table 1 below:
table 1:
the depth of the compensation chamber 17, i.e. the stroke, is that when the pressure of the medium end is greater than the pressure of the atmosphere end, the medium sealing member will move to the atmosphere end, whereas when the pressure of the medium end is less than the atmosphere pressure, the atmosphere sealing member will move to the medium end, and the maximum distance of movement is the friction pair stroke and the depth of the compensation chamber 17.
The data of the abrasion loss of the friction pair is the abrasion degree of a contact surface between the dynamic and static rings, namely the thickness of the dynamic and static rings after use is subtracted from the thickness of the initial dynamic and static rings.
From the test result, can see that when vice resilience compensation stroke of friction is less than 8mm, let out leakage quantity and increase, and let out leakage quantity change aggravation after the stroke is less than 7mm, exceed the national standard after the stroke is less than 5.5mm, and carry out the detection discovery of wearing and tearing volume to the friction pair, after the stroke is greater than 7mm, the vice wearing and tearing of friction are serious, can guarantee when consequently getting the 7mm stroke to let out the life that increases mechanical seal when leakage quantity is still less.
The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (9)
1. The utility model provides a collection dress formula double mechanical seal structure which characterized in that: the sealing device comprises a shaft sleeve (14) sleeved on a rotating shaft (18), wherein a connecting seat (1) is arranged outside the shaft sleeve (14), a convex ring (21) is formed in the middle of the inner ring of the connecting seat (1), a cavity distributed left and right is formed between the connecting seat (1) and the shaft sleeve (14) through the convex ring (21), and an atmospheric sealing element and a medium sealing element are respectively arranged inside the cavity;
the strokes of the atmosphere sealing element and the medium sealing element in the cavities are 7 mm;
elastic parts are arranged on two sides of the convex ring (21);
the atmosphere sealing element comprises an atmosphere end moving ring (3) and an atmosphere end static ring (4), the atmosphere end moving ring (3) is fixed on a shaft sleeve (14) positioned at an atmosphere end through a second rotating pin (15), and the atmosphere end static ring (4) is arranged in the connecting seat (1) in a sliding mode and is abutted to the atmosphere end moving ring (3) through an elastic component;
the medium sealing element comprises a medium end moving ring (8) and a medium end static ring (10), the medium end moving ring (8) is fixed on a shaft sleeve (14) positioned at a medium end through a first rotating pin (9), and the medium end static ring (10) is arranged in the connecting seat (1) in a sliding mode and is abutted to the medium end moving ring (8) through an elastic component;
sealing liquid is added into a gap between the shaft sleeve (14) and the connecting seat (1).
2. A cartridge-type double mechanical seal structure according to claim 1, wherein: a flow guide ring (7) is arranged in a gap between the connecting seat (1) and the shaft sleeve (14), a cooling liquid inlet (12) and a cooling liquid outlet (13) are respectively arranged on the connecting seat (1), and the cooling liquid inlet (12) and the cooling liquid outlet (13) are communicated with the gap.
3. A cartridge-type double mechanical seal structure according to claim 1, wherein: the atmosphere end static ring (4) is connected with the convex ring (21) through a first anti-rotation pin (5), and the medium end static ring (10) is connected with the convex ring (21) through a second anti-rotation pin (20).
4. A cartridge-type double mechanical seal structure according to claim 1, wherein: the medium end rotating ring (8) is locked at a medium end on the shaft sleeve (14) through a first rotating pin (9), the atmosphere end rotating ring (3) is locked at an atmosphere end on the shaft sleeve (14) through a second rotating pin (15), and a clamping ring (16) is arranged between the first rotating pin (9) and the medium end rotating ring (8).
5. A cartridge-type double mechanical seal structure according to claim 1, wherein: a plurality of O-shaped rings (11) are arranged between the connecting seat (1) and the shaft sleeve (14).
6. A cartridge-type double mechanical seal structure according to claim 1, wherein: the elastic component comprises a spring (6), a plurality of circumferentially distributed mounting holes (19) are formed in the left side and the right side of a convex ring (21) in the connecting seat (1), and the medium end static ring (10) and the atmosphere end static ring (4) are connected with the inner end wall of the corresponding mounting hole (19) through the spring (6).
7. A cartridge-type double mechanical seal structure according to claim 6, wherein: the length of the spring (6) in a free state is 23mm, the diameter of the spring is 6.5mm, and the number of effective turns of the spring is 11.
8. A cartridge-type double mechanical seal structure according to claim 1, wherein: a sealing gasket (2) is arranged between the atmosphere end moving ring (3) and the shaft sleeve (14).
9. A cartridge-type double mechanical seal structure according to claim 1, wherein: the atmosphere end moving ring (3) and the medium end moving ring (8) are made of YG6 hard alloy, and the atmosphere end static ring (4) and the medium end static ring (10) are made of silicon carbide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210111868.3A CN114517835A (en) | 2022-01-27 | 2022-01-27 | Integrated double-end-face mechanical sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210111868.3A CN114517835A (en) | 2022-01-27 | 2022-01-27 | Integrated double-end-face mechanical sealing structure |
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| Publication Number | Publication Date |
|---|---|
| CN114517835A true CN114517835A (en) | 2022-05-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210111868.3A Pending CN114517835A (en) | 2022-01-27 | 2022-01-27 | Integrated double-end-face mechanical sealing structure |
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Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2161778Y (en) * | 1993-04-01 | 1994-04-13 | 昆山市釜用机械密封件厂 | Adjustable machinery sealing device |
| CN202884035U (en) * | 2012-11-07 | 2013-04-17 | 江苏益通流体科技有限公司 | Combined shaft sleeve mechanical seal |
| CN203743436U (en) * | 2014-03-14 | 2014-07-30 | 成都一通密封有限公司 | Mechanical sealing device for salt slurry pump with large shaft diameter |
| CN203770645U (en) * | 2014-01-06 | 2014-08-13 | 东莞市华汇精密机械有限公司 | Two-end-surface mechanical seal device |
| CN203809346U (en) * | 2014-04-08 | 2014-09-03 | 四川大禹机械密封件制造有限公司 | Mechanical seal device for solid-liquid two-phase flow |
| CN104896104A (en) * | 2015-05-25 | 2015-09-09 | 浙江工业大学 | Online adjustable closing force gas lubricating mechanical sealing device |
| CN208935002U (en) * | 2018-08-20 | 2019-06-04 | 新疆乌苏市北方新科有限公司 | Chemical industry double end face sealing mechanism for pump |
| CN209943522U (en) * | 2019-05-22 | 2020-01-14 | 自贡市川密机械密封件有限公司 | Novel adjustable anhydrous mechanical seal device of desulfurization circulating pump |
| CN112178195A (en) * | 2020-10-09 | 2021-01-05 | 帕尔巴特机械(苏州)有限公司 | Container axial double-end-face split mechanical seal |
| CN112303239A (en) * | 2020-10-28 | 2021-02-02 | 中国计量大学 | Novel active dynamic pressure type air film end face sealing device and intelligent control method thereof |
| CN212657252U (en) * | 2020-04-21 | 2021-03-05 | 嘉兴博格曼密封件有限责任公司嘉善金刚分公司 | Integrated mechanical seal connecting assembly |
| CN112460263A (en) * | 2020-12-14 | 2021-03-09 | 常州市龙鑫智能装备有限公司 | Integrated mechanical sealing device for high-speed sand mill and sand mill |
| CN214330971U (en) * | 2021-02-25 | 2021-10-01 | 成都化新密封有限公司 | Mechanical seal of high-speed rotary pump and medium side mechanical seal thereof |
-
2022
- 2022-01-27 CN CN202210111868.3A patent/CN114517835A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2161778Y (en) * | 1993-04-01 | 1994-04-13 | 昆山市釜用机械密封件厂 | Adjustable machinery sealing device |
| CN202884035U (en) * | 2012-11-07 | 2013-04-17 | 江苏益通流体科技有限公司 | Combined shaft sleeve mechanical seal |
| CN203770645U (en) * | 2014-01-06 | 2014-08-13 | 东莞市华汇精密机械有限公司 | Two-end-surface mechanical seal device |
| CN203743436U (en) * | 2014-03-14 | 2014-07-30 | 成都一通密封有限公司 | Mechanical sealing device for salt slurry pump with large shaft diameter |
| CN203809346U (en) * | 2014-04-08 | 2014-09-03 | 四川大禹机械密封件制造有限公司 | Mechanical seal device for solid-liquid two-phase flow |
| CN104896104A (en) * | 2015-05-25 | 2015-09-09 | 浙江工业大学 | Online adjustable closing force gas lubricating mechanical sealing device |
| CN208935002U (en) * | 2018-08-20 | 2019-06-04 | 新疆乌苏市北方新科有限公司 | Chemical industry double end face sealing mechanism for pump |
| CN209943522U (en) * | 2019-05-22 | 2020-01-14 | 自贡市川密机械密封件有限公司 | Novel adjustable anhydrous mechanical seal device of desulfurization circulating pump |
| CN212657252U (en) * | 2020-04-21 | 2021-03-05 | 嘉兴博格曼密封件有限责任公司嘉善金刚分公司 | Integrated mechanical seal connecting assembly |
| CN112178195A (en) * | 2020-10-09 | 2021-01-05 | 帕尔巴特机械(苏州)有限公司 | Container axial double-end-face split mechanical seal |
| CN112303239A (en) * | 2020-10-28 | 2021-02-02 | 中国计量大学 | Novel active dynamic pressure type air film end face sealing device and intelligent control method thereof |
| CN112460263A (en) * | 2020-12-14 | 2021-03-09 | 常州市龙鑫智能装备有限公司 | Integrated mechanical sealing device for high-speed sand mill and sand mill |
| CN214330971U (en) * | 2021-02-25 | 2021-10-01 | 成都化新密封有限公司 | Mechanical seal of high-speed rotary pump and medium side mechanical seal thereof |
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