CN111980954B - Protection mechanism arranged at mechanical seal of mining high-speed emergency pump - Google Patents
Protection mechanism arranged at mechanical seal of mining high-speed emergency pump Download PDFInfo
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- CN111980954B CN111980954B CN202010869704.8A CN202010869704A CN111980954B CN 111980954 B CN111980954 B CN 111980954B CN 202010869704 A CN202010869704 A CN 202010869704A CN 111980954 B CN111980954 B CN 111980954B
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- hole
- gear
- end cover
- left end
- chamber
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/007—Details, component parts, or accessories especially adapted for liquid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D13/0606—Canned motor pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/086—Sealings especially adapted for liquid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/586—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps
- F04D29/5886—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps cooling by injection
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
The invention discloses a protection mechanism arranged at a mechanical seal position of a mining high-speed emergency pump, which comprises a motor wall, a main shaft and a gear unit which are coaxially arranged at the position of a central shaft of the motor wall, and a left end cover and a right end cover which are arranged at two sides of the motor wall; the gear unit is positioned on the right side of the left end cover and comprises a main gear and a driven gear, wherein the main gear is coaxially arranged with the main shaft, and the driven gear is meshed with the main gear; the mechanism further comprises a partition plate arranged in the mechanism, the partition plate, the main gear and the driven gear divide the internal space of the mechanism into a plurality of cavities, and the cavities are sequentially connected and form a circulating passage with a fifth cavity on the left side of the left end cover. The mechanism arranged in the mining high-speed emergency pump can reduce the quantity and the outer diameter of solid particles in cooling lubricating liquid of the mechanical seal in the working process of a unit, protect the friction end surfaces of a moving ring and a static ring in the mechanical seal, enhance the cooling effect of the mechanical seal and prolong the service life of the mechanical seal.
Description
Technical Field
The invention belongs to the technical field of fluid machinery, and particularly relates to a protection mechanism arranged at a mechanical seal of a mining high-speed emergency pump.
Background
The mechanical seal is a component for sealing between the rotating shaft and the pump shell, and the joint of the cross section is kept to prevent leakage under the action of fluid pressure and compensation force. In the mining high-speed emergency pump, a wet motor is adopted by a machine set, and mechanical seal is used for separating a pump conveying medium in a pump cavity and motor cooling liquid in a motor cavity. Because the structure of a wet motor in the mining high-speed emergency pump is complex, solid particles (metal or graphite scraps and the like) are inevitably present in a motor cavity in the working process, and the solid particles can cause great abrasion damage to the sealing end face of a moving ring and a static ring in a mechanical seal, so that the mechanical seal fails, the leakage of the motor cavity is caused, and the normal work of the whole emergency pump unit is influenced.
Disclosure of Invention
Aiming at the problems, the invention provides a protection mechanism arranged at the mechanical seal of a mining high-speed emergency pump.
The technical purpose is achieved, the technical effect is achieved, and the invention is realized through the following technical scheme:
a protection mechanism arranged at a mechanical seal position of a mining high-speed emergency pump comprises a motor wall, a spindle and a gear unit which are coaxially arranged at the central axis position of the motor wall, and a left end cover and a right end cover which are arranged at two sides of the motor wall; the gear unit is positioned on the right side of the left end cover and comprises a main gear and a driven gear, wherein the main gear is coaxially arranged with the main shaft, and the driven gear is meshed with the main gear; the mechanism further comprises a partition plate arranged in the mechanism, the partition plate, the main gear and the driven gear divide the internal space of the mechanism into a plurality of cavities, and the cavities are sequentially connected and form a circulating passage with a fifth cavity on the left side of the left end cover.
As a further improvement of the present invention, the chamber sequentially includes, from right to left, a first chamber formed by a region surrounded by the right end cover, the main shaft, and the partition plate, a second chamber formed by a region surrounded by the main shaft, the motor wall, the partition plate, and the gear unit, a third chamber formed by a region surrounded by the left end cover, the gear unit, the motor wall, and the main shaft, and a fourth chamber provided between the driven gear and the left end cover.
As a further improvement of the present invention, a first through hole communicating the fifth chamber and the fourth chamber and a second through hole communicating the fourth chamber and the third chamber are arranged in the left end cover, the first through hole is parallel to the main shaft, and the second through hole is perpendicular to the main shaft;
the main gear is provided with a third through hole which penetrates through the thickness direction of the main gear and is communicated with the third chamber and the second chamber;
the partition plate is provided with a fourth through hole for communicating the second chamber with the first chamber;
the first through hole penetrates through the position of the central shaft of the main shaft and is communicated with the first cavity and the fifth cavity.
As a further improvement of the invention, the fourth through hole is obliquely arranged, and the distance between one end of the fourth through hole, which is connected with the first chamber, and the central axis of the spindle is larger than the distance between one end of the fourth through hole, which is connected with the second chamber, and the central axis of the spindle.
As a further improvement of the invention, the left end face of the partition plate is coated with a filter screen which is positioned at the left end of the fourth through hole.
As a further improvement of the invention, the output end of the driven gear is connected with a cutting wheel extending into the first through hole, and the central axes of the three are coincident.
As a further improvement of the invention, the gear comprises a plurality of driven gears which are arranged at equal angles, the number of the first through holes and the number of the second through holes are the same, and the number of the first through holes and the number of the second through holes are the same as that of the driven gears.
As a further improvement of the present invention, a concave groove is provided on the inner side of the left end cover at a position corresponding to the position where the driven gear is mounted, the first through hole and the second through hole open into the concave groove, and the diameter of the concave groove in the direction corresponding to the axial direction of the main shaft is equal to the diameter of the output shaft to which the driven gear is connected.
As a further improvement of the invention, the partition plate is of a 'z' shape, the lower end face of the left side of the partition plate is installed on the main shaft, and the end face of the right side of the partition plate and the right end cover adopt labyrinth seal type assembly.
As a further improvement of the invention, the outer sides of the main shaft, the main gear and the driven gear are sleeved with shaft sleeves; the left end cover is provided with a sliding bearing, a gap is reserved between the sliding bearing and the main shaft, and the left end cover is assembled with the motor wall.
The invention has the beneficial effects that: the mechanism arranged in the mining high-speed emergency pump can reduce the quantity and the outer diameter of solid particles in cooling lubricating liquid of the mechanical seal in the working process of a unit, protect the friction end faces of a moving ring and a static ring in the mechanical seal, enhance the cooling effect of the mechanical seal and prolong the service life of the mechanical seal. Thereby improving the operation reliability of the unit and reducing the maintenance cost.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is an enlarged view at A;
wherein: 1-main shaft, 2-motor wall, 3-left end cover, 4-main gear, 5-driven gear, 601-first chamber, 602-second chamber, 603-third chamber, 604 fourth chamber-, 605-fifth chamber, 701-first through hole, 702-second through hole, 703-third through hole, 704-fourth through hole, 705-fifth through hole, 8-division plate, 9-right end cover, 10-cutting wheel, 11-sliding bearing, 12-filter screen.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The following detailed description of the principles of the invention is provided in connection with the accompanying drawings.
A protection mechanism arranged at a mechanical seal position of a mining high-speed emergency pump comprises a motor wall 2, a main shaft 1 and a gear unit which are coaxially arranged at the position of a central shaft of the motor wall 2, and a left end cover 3 and a right end cover 9 which are arranged at two sides of the motor wall 2; the gear unit is positioned on the right side of the left end cover 3 and comprises a main gear 4 which is coaxial with the main shaft 1 and a driven gear 5 which is meshed with the main gear 4; the device also comprises a partition plate 8 arranged in the mechanism, the main gear 4 and the driven gear 5 divide the internal space of the mechanism into a plurality of chambers, and the chambers are sequentially connected and form a circulating passage with a fifth chamber 605 on the left side of the left end cover 3.
The cavity is specifically a first cavity 601 formed by an area surrounded by the right end cover 9, the spindle 1 and the partition plate 8 from right to left, a second cavity 602 formed by an area surrounded by the motor wall 2, the partition plate 8 and the gear unit, a third cavity 603 formed by the left end cover 3, the gear unit and the area surrounded by the spindle 1, and a fourth cavity 604 formed between the driven gear 5 and the left end cover 3.
Wherein, the communication condition of each chamber is as follows, and the through holes are arranged in sequence. A first through hole 701 for communicating a fifth cavity 605 and a fourth cavity 604 and a second through hole 702 for communicating the fourth cavity 604 and a third cavity 603 are arranged in the left end cover 3, the first through hole 701 is parallel to the main shaft 1, and the second through hole 702 is perpendicular to the main shaft 1; the main gear 4 is provided with a third through hole 703 penetrating through the thickness direction of the main gear 4 and communicating the third chamber 603 and the second chamber 602; the partition plate 8 is provided with a fourth through hole 704 communicating the second chamber 602 and the first chamber 601. The device also comprises a fifth through hole 705 which penetrates through the main shaft 1 and is used for communicating the first cavity 601 and the fifth cavity 605, and the communication of the circulation loop is completed through the fifth through hole 705.
Of the above through holes, except for only one fifth through hole 705, the other through holes include N communication holes arranged at equal angles. Wherein, the number of the first through holes 701 and the second through holes 702 is the same as that of the driven gears 5 due to the plurality of driven gears 5 arranged at equal angles.
In the present invention, the fourth through hole 704 is obliquely arranged, and the distance between one end of the fourth through hole connected to the first chamber 601 and the central axis of the spindle 1 is greater than the distance between one end of the fourth through hole connected to the second chamber 602 and the central axis of the spindle 1. Through the pump suction effect of inclined hole, can promote the pressure of the cooling liquid that carries out the lubrication to mechanical seal, guarantee the return circuit circulation, reinforcing heat transfer effect.
The left end face of the partition plate 8 is covered with a filter screen 12, which is located at the left end of the fourth through hole 704 and is used for filtering the cooling liquid entering the first chamber 601.
The output end of the driven gear 5 is connected with a cutting wheel 10 extending into the first through hole 701, the central axes of the cutting wheel 10 and the first through hole 701 are overlapped, and the cutting wheel 10 can cut and grind the incoming flow solid particles in the first through hole 701 of the left end cover 3, so that the volume and the number of the solid particles are reduced.
In addition, in order to facilitate the installation of the driven gear 5, a concave groove is formed in the inner side of the left end cover 3 at a position corresponding to the position where the driven gear 5 is installed, the first through hole 701 and the second through hole 702 lead to the concave groove, and the size design needs to be careful that the diameter of the concave groove in the axial direction corresponding to the spindle 1 is equal to the diameter of an output shaft connected with the driven gear 5.
The partition plate 8 is of a "z" shape, and during the assembly process, the lower end surface of the left side thereof is mounted on the main shaft 1, and the right end surface thereof is assembled with the right end cover 9 by adopting a labyrinth seal, so that the flow of the liquid in the first chamber 601 and the second chamber 602 can be reduced to the maximum extent, and at the same time, the liquid can pass through the fourth through hole 704 which is obliquely arranged at the left end and has a pumping action as much as possible.
The outer sides of the main shaft 1, the main gear 4 and the driven gear 5 are sleeved with shaft sleeves, the left end cover is provided with a sliding bearing, a gap is reserved between the sliding bearing and the main shaft, and the left end cover is assembled with the wall of the motor. The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. The utility model provides a protection machanism of setting in mining high speed pump mechanical seal department of speedily carrying out rescue work which characterized in that: the motor comprises a motor wall, a spindle and gear unit coaxially arranged at the position of a central axis of the motor wall, and a left end cover and a right end cover arranged at two sides of the motor wall; the gear unit is positioned on the right side of the left end cover and comprises a main gear and a driven gear, wherein the main gear is coaxially arranged with the main shaft, and the driven gear is meshed with the main gear; the mechanism also comprises a partition plate arranged in the mechanism, the partition plate, the main gear and the driven gear divide the internal space of the mechanism into a plurality of chambers, and each chamber is sequentially connected and forms a circulating passage with a fifth chamber positioned on the left side of the left end cover;
the cavity sequentially comprises a first cavity formed by a region surrounded by the right end cover, the main shaft and the partition plate from right to left, a second cavity is formed by a region surrounded by the main shaft, the motor wall, the partition plate and the gear unit, a third cavity formed by the region surrounded by the left end cover, the gear unit, the motor wall and the main shaft, and a fourth cavity is arranged between the driven gear and the left end cover;
the left end cover is internally provided with a first through hole for communicating the fifth chamber with the fourth chamber and a second through hole for communicating the fourth chamber with the third chamber, the first through hole is parallel to the main shaft, and the second through hole is vertical to the main shaft; the main gear is provided with a third through hole which penetrates through the thickness direction of the main gear and is communicated with the third chamber and the second chamber; the partition plate is provided with a fourth through hole for communicating the second chamber with the first chamber; the fifth through hole penetrates through the position of the central shaft of the main shaft and is communicated with the first cavity and the fifth cavity;
the output end of the driven gear is connected with a cutting wheel extending into the first through hole, and the central axes of the cutting wheel, the first through hole and the second through hole are overlapped.
2. The shielding mechanism of claim 1, wherein: the fourth through hole is obliquely arranged, and the distance between one end of the fourth through hole, which is connected with the first cavity, and the central shaft of the main shaft is larger than the distance between one end of the fourth through hole, which is connected with the second cavity, and the central shaft of the main shaft.
3. The shielding mechanism of claim 2, wherein: and the left end face of the partition plate is coated with a filter screen and is positioned at the left end of the fourth through hole.
4. The shielding mechanism of claim 1, wherein: the gear transmission mechanism comprises a plurality of driven gears which are arranged at equal angles, wherein the number of the first through holes is the same as that of the second through holes, and the number of the first through holes is the same as that of the driven gears.
5. The shielding mechanism of claim 4, wherein: the inner side of the left end cover is provided with a concave groove corresponding to the position where the driven gear is installed, the first through hole and the second through hole lead to the concave groove, and the diameter of the concave groove in the axial direction corresponding to the spindle is equal to the diameter of an output shaft connected with the driven gear.
6. The shielding mechanism of claim 1, wherein: the partition plate is Z-shaped, the lower end face of the left side of the partition plate is installed on the main shaft, and the end face of the right side of the partition plate and the right end cover are assembled in a labyrinth seal mode.
7. The guard mechanism of any one of claims 1-6, wherein: the outer sides of the main shaft, the main gear and the driven gear are sleeved with shaft sleeves; the left end cover is provided with a sliding bearing, a gap is reserved between the sliding bearing and the main shaft, and the left end cover is assembled with the motor wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010869704.8A CN111980954B (en) | 2020-08-26 | 2020-08-26 | Protection mechanism arranged at mechanical seal of mining high-speed emergency pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010869704.8A CN111980954B (en) | 2020-08-26 | 2020-08-26 | Protection mechanism arranged at mechanical seal of mining high-speed emergency pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111980954A CN111980954A (en) | 2020-11-24 |
| CN111980954B true CN111980954B (en) | 2022-02-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010869704.8A Active CN111980954B (en) | 2020-08-26 | 2020-08-26 | Protection mechanism arranged at mechanical seal of mining high-speed emergency pump |
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| Country | Link |
|---|---|
| CN (1) | CN111980954B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112928866B (en) * | 2021-02-07 | 2021-11-05 | 南京工程学院 | Cooling circulation loop for high-power high-speed submersible pump |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH440880A (en) * | 1962-06-01 | 1967-07-31 | Borg Warner | Mechanical sealing device |
| JP2005282469A (en) * | 2004-03-30 | 2005-10-13 | Kubota Corp | Cooling structure for pump motor |
| CN102116320A (en) * | 2010-12-30 | 2011-07-06 | 上海阿波罗机械股份有限公司 | Spent fuel pool cooling pump for nuclear power station |
| CN203879792U (en) * | 2014-05-24 | 2014-10-15 | 安徽莱恩电泵有限公司 | Self-circulation depressurization mechanical seal structure |
| CN105927576A (en) * | 2016-06-12 | 2016-09-07 | 江苏大学 | Dynamic filtration structure of cooling circulating liquid of sliding bearing of wet motor pump |
| CN208595092U (en) * | 2018-06-08 | 2019-03-12 | 安徽阿莫斯泵业有限公司 | A kind of dihedral vane formula centrifugal pump cover seal chamber self-cleaning structure |
| CN208651196U (en) * | 2017-12-14 | 2019-03-26 | 杨常成 | A kind of hydraulic engineering immersible pump |
-
2020
- 2020-08-26 CN CN202010869704.8A patent/CN111980954B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH440880A (en) * | 1962-06-01 | 1967-07-31 | Borg Warner | Mechanical sealing device |
| JP2005282469A (en) * | 2004-03-30 | 2005-10-13 | Kubota Corp | Cooling structure for pump motor |
| CN102116320A (en) * | 2010-12-30 | 2011-07-06 | 上海阿波罗机械股份有限公司 | Spent fuel pool cooling pump for nuclear power station |
| CN203879792U (en) * | 2014-05-24 | 2014-10-15 | 安徽莱恩电泵有限公司 | Self-circulation depressurization mechanical seal structure |
| CN105927576A (en) * | 2016-06-12 | 2016-09-07 | 江苏大学 | Dynamic filtration structure of cooling circulating liquid of sliding bearing of wet motor pump |
| CN208651196U (en) * | 2017-12-14 | 2019-03-26 | 杨常成 | A kind of hydraulic engineering immersible pump |
| CN208595092U (en) * | 2018-06-08 | 2019-03-12 | 安徽阿莫斯泵业有限公司 | A kind of dihedral vane formula centrifugal pump cover seal chamber self-cleaning structure |
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| Publication number | Publication date |
|---|---|
| CN111980954A (en) | 2020-11-24 |
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