CN107143495B - Mechanical sealing structure of high-pressure rotor pump - Google Patents
Mechanical sealing structure of high-pressure rotor pump Download PDFInfo
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- CN107143495B CN107143495B CN201710497157.3A CN201710497157A CN107143495B CN 107143495 B CN107143495 B CN 107143495B CN 201710497157 A CN201710497157 A CN 201710497157A CN 107143495 B CN107143495 B CN 107143495B
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- ring
- transmission shaft
- stationary ring
- oil seal
- stationary
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
- F04C15/0023—Axial sealings for working fluid
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Mechanical Sealing (AREA)
Abstract
The invention belongs to the technical field of high-pressure rotor pumps, and particularly relates to a mechanical sealing structure of a high-pressure rotor pump, which comprises a transmission shaft, wherein a rotor is arranged on one side of the transmission shaft, a bearing cover plate is arranged on the other side of the transmission shaft, a groove is formed between the rotor and the transmission shaft, a built-in spring is arranged in the groove, a movable ring is inserted into the groove, the movable ring and the transmission shaft are fixed through a movable ring anti-rotation pin, a stationary ring is arranged on the left side of the movable ring, the stationary ring is separated from a framework oil seal through a stationary ring seat, a stationary ring seat is sleeved on the outer ring of the stationary ring and the framework oil seal, a stationary ring anti-rotation pin is arranged between the stationary ring seat and the stationary ring, an oil seal. The invention can not only effectively prevent the lubricating medium at the bearing end from permeating into the mechanical sealing structure, but also bear the pressure of a larger pump and keep good sealing effect.
Description
Technical Field
The invention belongs to the technical field of high-pressure rotor pumps, and particularly relates to a mechanical sealing structure of a high-pressure rotor pump.
Background
At present, the existing mechanical seal of the rotor pump is generally externally-mounted outflow and spring reverse-pushing type, and due to the structure, the leakage point is large, the leakage amount is large, and the leakage material is easy to enter the bearing end of a gearbox; in addition, the force applied to the end face of the non-equilibrium mechanical seal adopted by domestic manufacturers is greatly changed along with the rise of the medium pressure, so that the mechanical seal is only suitable for low-pressure mechanical seal, the pressure applied to the known equilibrium mechanical seal is limited, most of the service pressure is less than or equal to 1.6MPa, and the mechanical seal is easy to leak when the service pressure is higher than the pressure value, so that the fault of the mechanical seal is caused, and the service life is reduced.
Disclosure of Invention
The invention aims to provide a mechanical sealing structure of a high-pressure rotor pump, which has a simple structure and a superior leakage-proof effect and can solve the problems.
The purpose of the invention is realized as follows:
a mechanical sealing structure of a high-pressure rotor pump comprises a transmission shaft, wherein a rotor is arranged on one side of the transmission shaft, and a bearing cover plate is arranged on the other side of the transmission shaft;
the shaping is fluted between rotor and the transmission shaft, the recess is provided with built-in spring, the recess inserts and installs the rotating ring, the rotating ring passes through the rotating ring with the transmission shaft and prevents changeing the pin fixed, the rotating ring left side is provided with quiet ring, quiet ring separates through quiet ring seat with the skeleton oil blanket, quiet ring overlaps with skeleton oil blanket outer lane and has quiet ring seat, be provided with quiet ring between quiet ring seat and the quiet ring and prevent changeing the pin, skeleton oil blanket left side is provided with the oil blanket baffle, and oil blanket baffle and bearing apron non-contact installation.
Preferably, an O-shaped ring a is arranged between the movable ring and the groove.
Preferably, an O-ring b is arranged between the static ring and the static ring seat.
Preferably, an O-shaped ring c is arranged between the oil seal baffle and the transmission shaft.
Preferably, an O-shaped ring d is arranged between the static ring seat and the pump body.
Preferably, a rotating ring anti-rotating pin is arranged between the rotating ring and the transmission shaft.
Preferably, a rotating ring bulge is formed on one side, close to the stationary ring, of the rotating ring, and the rotating ring bulge is installed in contact with the stationary ring.
Preferably, the middle part of the transmission shaft is provided with a shaft shoulder, and a space is arranged between the shaft shoulder and the static ring seat as well as between the shaft shoulder and the framework oil seal.
Compared with the prior art, the invention has the outstanding and beneficial technical effects that:
1. a framework oil seal is arranged on one side of a bearing cover plate, an oil seal baffle is arranged on one side of the framework oil seal and used for supporting and limiting, and the framework oil seal and a static ring seat form a mechanical sealing water flushing sealing cavity.
2. The static ring anti-rotation pin and the movable ring bulge limit and fix the static ring, so that the static ring cannot move axially, the sealing stability and the sealing pressure of the mechanical seal are improved, the static ring is fixed due to the fact that the static ring and the movable ring are installed in a contact mode, when the pressure rises, the directional thrust to the movable ring is formed, the load of a built-in spring is reduced, and the function of high pressure and no leakage can be achieved.
3. The O-shaped ring a prevents a medium from permeating into the groove, damages the built-in spring and prevents leakage.
4. The O-shaped ring b prevents a medium from permeating into an installation gap between the static ring and the static ring seat and entering the inside of the mechanical sealing structure.
5. The O-shaped ring c can prevent the materials from being instantly extruded into the framework oil seal on the bearing cover plate under the action of high speed or high pressure after the mechanical seal is leaked and then enter the gear box.
6. According to the space arranged on the right side of the framework oil seal, when the pressure of a pump rises, hydraulic pressure pushes the framework oil seal leftwards and pushes the static ring seat rightwards, so that the load of the built-in spring is reduced to a certain extent, and high-pressure liquid is not easy to permeate.
7. According to the invention, the rotating ring anti-rotating pin 16 is arranged between the transmission shaft and the rotating ring, so that the medium penetration caused by excessive movement of the rotating ring is prevented.
Drawings
FIG. 1 is a schematic illustration of the mechanical seal assembly of the present invention;
fig. 2 is an enlarged view of the mechanical seal structure a of the present invention.
The reference numerals in the figures denote the meanings: 1-a transmission shaft; 2-a rotor; 3-a bearing cover plate; 4-built-in spring; 5-a groove; 6-moving ring; 7-stationary ring; 8-the static ring prevents the rotating pin; 9-framework oil seal; 10-oil seal baffle; 11-stationary ring seat; 12-moving ring bulge; 13-O-ring a; 14-O-ring b; 15-O-ring c; 16-rotating ring anti-rotation pin; 17-a pump body; 18-O-ring d; 19-shaft shoulder.
Detailed Description
The invention is further described below in specific examples:
example (b): as shown in fig. 1, a mechanical seal structure of a high-pressure rotor pump comprises a transmission shaft 1, wherein a rotor 2 is installed on one side of the transmission shaft 1, and a bearing cover plate 3 is installed on the other side of the transmission shaft 1;
as shown in fig. 2, a groove 5 is formed between the rotor 2 and the transmission shaft 1, the groove 5 is provided with a built-in spring 4, the groove 5 is inserted with a rotating ring 6, the rotating ring 6 is fixed with the transmission shaft 1 through a rotating ring anti-rotation pin 16, the left side of the rotating ring 6 is provided with a stationary ring 7, the stationary ring 7 is separated from a framework oil seal 9 through a stationary ring seat 11, the outer ring of the stationary ring 7 and the framework oil seal 9 is sleeved with the stationary ring seat 11, a stationary ring anti-rotation pin 8 is arranged between the stationary ring seat 11 and the stationary ring 7, the left side of the framework oil seal 9 is provided with an oil seal baffle 10, the oil seal baffle 10 is installed in a non-contact manner with the bearing cover plate 3, one side of the bearing cover plate 3 is provided with a framework oil seal 8, one side of the framework oil seal 8 is provided with an oil seal baffle, because the static ring 7 is installed in contact with the movable ring 6, the static ring 7 is fixed, when the pressure rises, the thrust in the direction of the movable ring 6 is formed, the load of the built-in spring 4 is reduced, and the function of preventing high pressure from leaking can be realized.
Preferably, an O-ring a13 is provided between the rotating ring 6 and the groove 5 to prevent media from penetrating into the groove 5 and damaging the innerspring 4.
Preferably, an O-ring b14 is arranged between the stationary ring 7 and the stationary ring seat 11 to prevent a medium from penetrating into an installation gap between the stationary ring 7 and the stationary ring seat 11 and entering into the inside of the mechanical sealing structure.
Preferably, an O-ring c15 is arranged between the oil seal baffle 10 and the transmission shaft 1, so that bearing lubricating oil can be prevented from permeating into the mechanical sealing structure through the gap between the bearing cover plate 3 and the transmission shaft.
Preferably, the static ring seat 11 and the pump body 17 and only the O-ring d18 prevent the medium from penetrating into the installation gap between the static ring seat 11 and the pump body 17.
Preferably, a rotating ring anti-rotation pin 16 is arranged between the rotating ring 6 and the transmission shaft 1, the rotating ring 6 moves axially in a mechanical seal, and the rotating ring anti-rotation pin 16 is arranged to prevent the rotating ring 6 from moving too much, causing too large gap and medium infiltration.
Preferably, the rotating ring 6 is formed with a rotating ring protrusion 12 on one side close to the stationary ring 7, the rotating ring protrusion 12 is installed in contact with the stationary ring 7, and the stationary ring rotation preventing pin 8 and the rotating ring protrusion 12 fix the stationary ring 7 in a limiting manner, so that the stationary ring 7 cannot move axially, and the sealing stability of mechanical sealing is facilitated.
Preferably, the middle part of the transmission shaft 1 is provided with a shaft shoulder 19, a space is arranged between the shaft shoulder 19 and the static ring seat 11 and between the shaft shoulder 19 and the framework oil seal 9, when the internal pressure of the space is increased, hydraulic pressure pushes the framework oil seal 9 leftwards and pushes the static ring seat 11 rightwards, so that the load of the built-in spring 4 is reduced to a certain extent, and high-pressure liquid is not easy to permeate.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (6)
1. A mechanical seal structure of a high-pressure rotor pump is characterized in that: the rotor comprises a transmission shaft (1), wherein a rotor (2) is installed on one side of the transmission shaft (1), and a bearing cover plate (3) is installed on the other side of the transmission shaft (1);
a groove (5) is formed between the rotor (2) and the transmission shaft (1), a built-in spring (4) is arranged in the groove (5), a movable ring (6) is inserted into the groove (5), the movable ring (6) and the transmission shaft (1) are fixed through a movable ring anti-rotation pin (16), a stationary ring (7) is arranged on the left side of the movable ring (6), the stationary ring (7) is separated from a framework oil seal (9) through a stationary ring seat (11), a stationary ring seat (11) is sleeved on the outer ring of the stationary ring (7) and the framework oil seal (9), a stationary ring anti-rotation pin (8) is arranged between the stationary ring seat (11) and the stationary ring (7), an oil seal baffle (10) is arranged on the left side of the framework oil seal (9), and the oil seal baffle (10) is installed on the bearing cover plate (3) in a non-contact; a space is arranged between the static ring seat (11) and the framework oil seal (9).
2. A mechanical seal structure of a high-pressure rotary pump according to claim 1, characterized in that: an O-shaped ring a (13) is arranged between the movable ring (6) and the groove (5).
3. A mechanical seal structure of a high-pressure rotary pump according to claim 1, characterized in that: an O-shaped ring b (14) is arranged between the static ring (7) and the static ring seat (11).
4. A mechanical seal structure of a high-pressure rotary pump according to claim 1, characterized in that: an O-shaped ring c (15) is arranged between the oil seal baffle (10) and the transmission shaft (1).
5. A mechanical seal structure of a high-pressure rotary pump according to claim 1, characterized in that: an O-shaped ring d (18) is arranged between the static ring seat (11) and the pump body (17).
6. A mechanical seal structure of a high-pressure rotary pump according to claim 1, characterized in that: a movable ring bulge (12) is formed on one side, close to the static ring (7), of the movable ring (6), and the movable ring bulge (12) is installed in contact with the static ring (7); and a shaft shoulder (19) is arranged in the middle of the transmission shaft (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710497157.3A CN107143495B (en) | 2017-06-27 | 2017-06-27 | Mechanical sealing structure of high-pressure rotor pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710497157.3A CN107143495B (en) | 2017-06-27 | 2017-06-27 | Mechanical sealing structure of high-pressure rotor pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107143495A CN107143495A (en) | 2017-09-08 |
| CN107143495B true CN107143495B (en) | 2020-06-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710497157.3A Active CN107143495B (en) | 2017-06-27 | 2017-06-27 | Mechanical sealing structure of high-pressure rotor pump |
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| Country | Link |
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| CN (1) | CN107143495B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110985373B (en) * | 2019-11-22 | 2022-04-19 | 中国航发西安动力控制科技有限公司 | Servo labyrinth seal structure |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5497801U (en) * | 1977-12-22 | 1979-07-10 | ||
| GB2202005A (en) * | 1987-03-12 | 1988-09-14 | Ssp Pumps | Pump |
| EP1437511A1 (en) * | 2003-01-08 | 2004-07-14 | Hugo Vogelsang Maschinenbau GmbH | Device for shaft sealing of a rotary piston pump |
| CN201078473Y (en) * | 2007-06-27 | 2008-06-25 | 胡滨 | Mechanical seal member for stirrer |
| CN203670791U (en) * | 2013-12-26 | 2014-06-25 | 宁波安铱矢密封有限公司 | Medium-crystallization prevention or medium-gasifying prevention single end face sealing structure |
| CN205331429U (en) * | 2016-02-02 | 2016-06-22 | 广州凯里莱电气机械有限公司 | Be applied to anhydrous mechanical seal structure of side income formula agitator |
| CN106286290A (en) * | 2016-10-21 | 2017-01-04 | 宁波邦威泵业有限公司 | The shaft sealer of impeller pump |
| CN207018195U (en) * | 2017-06-27 | 2018-02-16 | 浙江力高泵业科技有限公司 | A kind of mechanical seal structure of high pressure impeller pump |
-
2017
- 2017-06-27 CN CN201710497157.3A patent/CN107143495B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5497801U (en) * | 1977-12-22 | 1979-07-10 | ||
| GB2202005A (en) * | 1987-03-12 | 1988-09-14 | Ssp Pumps | Pump |
| EP1437511A1 (en) * | 2003-01-08 | 2004-07-14 | Hugo Vogelsang Maschinenbau GmbH | Device for shaft sealing of a rotary piston pump |
| CN201078473Y (en) * | 2007-06-27 | 2008-06-25 | 胡滨 | Mechanical seal member for stirrer |
| CN203670791U (en) * | 2013-12-26 | 2014-06-25 | 宁波安铱矢密封有限公司 | Medium-crystallization prevention or medium-gasifying prevention single end face sealing structure |
| CN205331429U (en) * | 2016-02-02 | 2016-06-22 | 广州凯里莱电气机械有限公司 | Be applied to anhydrous mechanical seal structure of side income formula agitator |
| CN106286290A (en) * | 2016-10-21 | 2017-01-04 | 宁波邦威泵业有限公司 | The shaft sealer of impeller pump |
| CN207018195U (en) * | 2017-06-27 | 2018-02-16 | 浙江力高泵业科技有限公司 | A kind of mechanical seal structure of high pressure impeller pump |
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| Publication number | Publication date |
|---|---|
| CN107143495A (en) | 2017-09-08 |
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