CN110821880A - Forced transmission double-end-face cartridge mechanical seal - Google Patents
Forced transmission double-end-face cartridge mechanical seal Download PDFInfo
- Publication number
- CN110821880A CN110821880A CN201911095138.3A CN201911095138A CN110821880A CN 110821880 A CN110821880 A CN 110821880A CN 201911095138 A CN201911095138 A CN 201911095138A CN 110821880 A CN110821880 A CN 110821880A
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- ring
- cold
- protective sleeve
- static
- mechanical seal
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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
- F04D29/10—Shaft sealings
- F04D29/12—Shaft sealings using sealing-rings
- F04D29/126—Shaft sealings using sealing-rings 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Sealing (AREA)
Abstract
The invention discloses a forced transmission double-end-face cartridge mechanical seal, wherein a dielectric ring is in friction seal connection with a dielectric ring, a cold static ring seat is arranged at the other side of a gland, the cold static ring seat is connected with a cold static ring, the cold dynamic ring is in friction seal connection with the cold static ring, the cold dynamic ring and the dielectric ring are respectively clamped at two sides of a through protective sleeve, a spring penetrates through a through hole in the protective sleeve to respectively abut against the cold dynamic ring and the dielectric ring, the protective sleeve penetrates through the cold static ring seat at one side of the cold static ring to form an elastic pressing part, a locking ring is sleeved at the outer side of the elastic pressing part and is connected with the cold static ring seat by a positioning block, an annularly arranged screw penetrates through the positioning block and the locking ring to press the elastic pressing part, liquid channels are arranged on two opposite surfaces of. The shaft grinding structure has the advantages that the shaft grinding problem can be effectively solved by arranging the protective sleeve structure and matching the forced transmission of the medium dynamic ring, the cold dynamic ring and the protective sleeve, and the structure is high in sealing efficiency, light in size, strong in comprehensive performance, wide in application range and low in manufacturing cost.
Description
Technical Field
The invention relates to the field of mechanical seal, in particular to a forced transmission double-end-face cartridge mechanical seal.
Background
Because there is pressure differential in the interior fluid of pump and the atmosphere outside the pump, in order to prevent the slurry from leaking, need to establish sealing device when the pump operation, chemical industry often can meet strong corruption, the transport of high temperature medium, and the machine of ordinary lining fluorine chemical industry pump is sealed generally to adopt WB2 external package formula machine, can only bear the temperature 100 degrees at most, when the temperature is too high, can arouse that little spring compression is too big, the axle drive is too big, thereby make sealed face transitional wear, perhaps can make O type circle or connection metal part go wrong, lead to revealing, when the pump is carrying high temperature corrosive medium, the temperature that machine seals movable ring and quiet ring butt mill and produce can't be cooled off.
Moreover, in the current mechanical seal process, the shaft grinding phenomenon may occur due to the swinging of the equipment or the processing error of the equipment, and the current mechanical seal mostly adopts a polytetrafluoroethylene structure, so that the mechanical seal is easy to wear when the machine seal works in an alkaline state or contains metal particles, and the polytetrafluoroethylene structure is easy to tear.
Disclosure of Invention
The invention aims to solve the problems and provides a forced transmission double-end-face cartridge mechanical seal, which can effectively solve the problem of shaft grinding by arranging a protective sleeve structure and matching the forced transmission of the medium moving ring, the cold moving ring and the protective sleeve, and has small structure volume and strong acid and alkali resistance.
In order to achieve the purpose, the invention adopts the technical scheme that: a forced transmission double-end-face container type mechanical seal comprises a through protective sleeve, a medium ring, a cold ring and a gland, wherein a medium static ring is arranged on one side of the gland, the medium ring is in friction seal connection with the medium static ring, a cold static ring seat is arranged on the other side of the gland, the cold static ring seat is connected with the cold static ring, the cold ring is in friction seal connection with the cold static ring, the cold ring and the medium ring are respectively clamped on two sides of the protective sleeve, a spring penetrates through a through hole in the protective sleeve to respectively abut against the cold ring and the medium ring, the protective sleeve penetrates through the cold static ring seat on one side of the cold static ring to form an elastic pressing portion, a locking ring is sleeved on the outer side of the elastic pressing portion and is connected with the cold static ring seat through a positioning block, an annularly-arranged screw penetrates through the positioning block and the locking ring to press the elastic pressing portion.
Furthermore, an L-shaped sealing gasket is arranged between the cold static ring and the cold static ring seat.
Furthermore, the protective sleeve is provided with two vertical cold moving ring fixing ports in an orthogonal mode, two medium moving ring fixing ports in an orthogonal mode are arranged in a transverse mode, the two protruding clamping portions on the cold moving ring and the medium moving ring are clamped with the cold moving ring fixing ports and the medium moving ring fixing ports respectively, and the size of the clamping portions is smaller than the size of openings of the cold moving ring fixing ports and the medium moving ring fixing ports.
Furthermore, a first sealing ring, a second sealing ring and a third sealing ring are arranged at the joint of the static ring and the gland.
Furthermore, a fourth sealing ring is arranged between the protective sleeve and the medium ring.
Further, a fifth sealing ring is arranged between the protective sleeve and the cold moving ring.
Furthermore, a sixth sealing ring is arranged between the cold static ring seat and the gland.
Further, a seventh sealing ring is arranged between the protective sleeve and the pump shaft.
Furthermore, the locking ring is clamped and fixed by the convex part on the cold and static ring seat through the hook part on the locking ring.
In summary, the invention has the following advantages:
the invention provides a forced transmission double-end-face cartridge mechanical seal, which can effectively solve the problem of shaft grinding by arranging a protective sleeve structure and matching forced transmission of a medium dynamic ring, a cold dynamic ring and the protective sleeve, and has small structure volume and strong acid and alkali resistance.
The invention adopts the forced transmission between the protective sleeve and the two movable rings, is matched with the friction sealing of the movable rings and the static rings, and seals the cooling cavity at multiple points to replace a water seal bearing, thereby saving raw materials, improving the corrosion resistance and the corrosion resistance, expanding the application range of the original equipment, reducing the cost, and leading the equipment to be more energy-saving and more environment-friendly.
In addition, the dynamic ring and the static ring of the invention do not have dry grinding phenomenon under the action of cooling liquid.
Furthermore, the two movable rings are arranged on the upper opening of the protective sleeve, and the two movable rings are matched with the spring, so that the overall structure is small in size and simple in connection.
Drawings
FIG. 1 is a cross-sectional view of the structure of the present invention;
figure 2 is a front view of the present invention.
Detailed Description
The invention is further described with reference to the following figures and examples:
example 1:
a forced transmission double-end-face cartridge mechanical seal is shown in figures 1 and 2 and comprises a through protective sleeve 5, a medium moving ring 3, a cold moving ring 6 and a gland 1.
On its concrete connection, gland 1 one side is equipped with and is situated between quiet ring 2, and it is connected with quiet ring 2 friction seal to intervene movable ring 3, and gland 1 opposite side is equipped with cold quiet ring seat 8, and cold quiet ring seat 8 is connected with cold quiet ring 7 to, be equipped with sixth sealing washer 21 between cold quiet ring seat 8 and the gland 1.
The cold dynamic ring 6 is connected with the cold static ring 7 in a friction sealing way, the cold dynamic ring 6 and the medium dynamic ring 3 are respectively clamped at the two sides of the protective sleeve 5, and has circumferential freedom, the spring 4 passes through the through hole 51 on the protective sleeve 5 to respectively abut against the cold moving ring 6 and the intermediate ring 3, concretely, two cold moving ring fixing ports 53 are vertically arranged on the protective sleeve 5 in an orthogonal way, two intermediate ring fixing ports 54 are transversely arranged on the protective sleeve in an orthogonal way, two convex clamping parts on the cold moving ring 6 and the intermediate ring 3 are respectively clamped with the cold moving ring fixing ports 53 and the intermediate ring fixing ports 54, the size of the engaging portion is smaller than the opening size of the cold moving ring fixing opening 53 and the medium moving ring fixing opening 54, namely, the clamping part on the intermediate ring is slightly smaller than the fixed opening of the intermediate ring, and can slightly move and rotate in the circumferential direction, and the clamping part on the cold moving ring is slightly smaller than the clamping part of the cold moving ring, and can slightly rotate in the circumferential direction, so that a forced transmission structure of the moving ring is formed.
The pump shaft 100 passes through the middle of the mechanical seal structure when the protective sleeve is connected with the pump shaft 100, the protective sleeve 5 passes through the cold stationary ring seat 8 at one side of the cold stationary ring 7 to form an elastic pressing part 52, the elastic pressing part 52 is of an annular multi-flap structure, and therefore the elastic pressing part has inward elastic deformation performance, and the elastic pressing part is provided with the clamp spring 12 and is convenient to fix.
The locking ring 9 is sleeved on the outer side of the elastic pressing part 52 and is connected with the cold stationary ring seat 8 through the positioning block 10, the annularly arranged screws 11 penetrate through the positioning block 10 and the locking ring 9 to press the elastic pressing part 52, particularly press the petal-shaped part, so that the pump shaft is pressed, and on the action mechanism of the locking ring 9, the locking ring 9 is clamped on the convex part on the cold stationary ring seat 8 through the hook part on the locking ring 9 to form fixation.
The gland 1 is provided with liquid passages 200 at opposite faces thereof for circulating flow of the cooling liquid
And on the multi-point seal of the cooling liquid flowing wall body of the machine seal structure, a first seal ring 20, a second seal ring 19 and a third seal ring 18 are arranged at the joint of the static ring 2 and the gland 1.
Preferably, a fourth sealing ring 17 is arranged between the protective sleeve 5 and the intermediate ring 3.
Preferably, a fifth sealing ring 15 is arranged between the protective sleeve 5 and the cold moving ring 6.
Preferably, a sixth sealing ring 21 is arranged between the cold static ring seat 8 and the gland 1.
Furthermore, a seventh sealing ring 16 is disposed between the protecting sleeve 5 and the pump shaft 100.
The working mechanism is further explained by combining, cooling liquid enters from the liquid channel 200 on one side and flows out from the liquid channel on the other side to form circulation, the pump shaft is connected into a whole through the medium static ring, the medium dynamic ring, the sealing rings, the spring, the protecting sleeve which is communicated with the medium and is not in contact with the medium, the cold static ring, the cold dynamic ring, the gland, the limiting block and the locking ring, the pump shaft is locked by the locking ring matched with the elastic pressing part under the action of the screw 11, the pump shaft drives the two dynamic rings to rotate together after rotating, and under the action of the multi-sealing structure, the sealing performance of the whole mechanical sealing structure is good, and the cooling liquid matched with the spring is propped against the cold dynamic ring and the medium dynamic ring on the protecting sleeve, so that the sealing effect of the friction surfaces of the dynamic ring and.
Moreover, this seal structure is through the setting cooperation of protective sheath structure mediate the ring and cold rotating ring and protective sheath complex force transmission, can guarantee that the rotating ring can rotate along with the pump shaft, possesses certain buffering, can effectual solution grind the axle problem to effectual solution leads to cost-push and high temperature, high pressure, the uncontrollable risk to personnel and environment that the strong corrosion operating mode leads to of abnormal axle grinding, and, this seal structure is small, and acid and alkali resistance is strong.
In conclusion, the invention adopts the forced transmission between the protective sleeve and the two movable rings, is matched with the friction sealing of the movable rings and the static rings, and performs multipoint sealing on the cooling cavity to replace a water seal bearing, thereby saving raw materials, improving the corrosion resistance and the corrosion resistance, expanding the application range of the original equipment, reducing the cost and saving more energy and protecting more environment.
The structure is energy-saving and environment-friendly, high in sealing efficiency, light in size, strong in comprehensive performance, wide in application range and low in manufacturing cost, and simultaneously solves the problem that mechanical sealing is invalid due to dry grinding caused by unsmooth medium supply, blockage, local vacuum and the like in the operation process of equipment.
In addition, the dynamic ring and the static ring of the invention do not have dry grinding phenomenon under the action of cooling liquid.
Furthermore, the two movable rings are arranged on the upper opening of the protective sleeve, and the two movable rings are matched with the spring, so that the overall structure is small in size and simple in connection.
The above embodiments are merely illustrative of the technical concepts and features of the present invention, and the purpose of the embodiments is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements.
The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
It will be understood that the embodiments described above are illustrative only and not restrictive, and that various obvious and equivalent modifications and substitutions for details described herein may be made by those skilled in the art without departing from the basic principles of the invention.
Claims (9)
1. A forced transmission double-end-face cartridge mechanical seal is characterized in that: the sealing device comprises a protective sleeve (5) communicated with the middle, a medium ring (3), a cold dynamic ring (6) and a gland (1), wherein the medium static ring (2) is arranged on one side of the gland (1), the medium ring (3) is in friction sealing connection with the medium static ring (2), a cold static ring seat (8) is arranged on the other side of the gland (1), the cold static ring seat (8) is connected with a cold static ring (7), the cold dynamic ring (6) is in friction sealing connection with the cold static ring (7), the cold dynamic ring (6) and the medium ring (3) are respectively clamped on two sides of the protective sleeve (5) and have circumferential freedom, a spring (4) penetrates through a through hole (51) in the protective sleeve (5) to respectively abut against the cold dynamic ring (6) and the medium ring (3), and the protective sleeve (5) penetrates through the cold static ring seat (8) on one side of the cold static ring (7) to form an elastic pressing part (52), the locking ring (9) is sleeved on the outer side of the elastic pressing portion (52) and is connected with the cold static ring seat (8) through a positioning block (10), a screw (11) which is annularly arranged penetrates through the positioning block (10) and the locking ring (9) to tightly press the elastic pressing portion (52), the two opposite surfaces of the gland (1) are provided with liquid channels (200), and the pump shaft (100) penetrates through the middle of the sealing structure.
2. A positive drive double-ended cartridge mechanical seal according to claim 1, wherein: an L-shaped sealing gasket (14) is arranged between the cold static ring (7) and the cold static ring seat (8).
3. A positive drive double-ended cartridge mechanical seal according to claim 1, wherein: the orthogonal is equipped with vertically and is equipped with two cold movable ring fixed mouthful (53) on protective sheath (5), and the orthogonal transversely is equipped with two and intervenes movable ring fixed mouthful (54), cold movable ring (6) with two convex block portions on intervening movable ring (3) respectively with cold movable ring fixed mouthful (53), intervene movable ring fixed mouthful (54) block, just block portion size is less than cold movable ring fixed mouthful (53), intervene movable ring fixed mouthful (54) opening size.
4. A positive drive double-ended cartridge mechanical seal according to claim 1, wherein: the joint of the static intermediate ring (2) and the gland (1) is provided with a first sealing ring (20), a second sealing ring (19) and a third sealing ring (18).
5. A positive drive double-ended cartridge mechanical seal according to claim 1, wherein: a fourth sealing ring (17) is arranged between the protective sleeve (5) and the intervening ring (3).
6. A positive drive double-ended cartridge mechanical seal according to claim 1, wherein: and a fifth sealing ring (15) is arranged between the protective sleeve (5) and the cold moving ring (6).
7. A positive drive double-ended cartridge mechanical seal according to claim 1, wherein: and a sixth sealing ring (21) is arranged between the cold static ring seat (8) and the gland (1).
8. A positive drive double-ended cartridge mechanical seal according to claim 1, wherein: and a seventh sealing ring (16) is further arranged between the protective sleeve (5) and the pump shaft (100).
9. A positive drive double-ended cartridge mechanical seal according to claim 1, wherein: the locking ring (9) is clamped and fixed by the convex part on the cold and static ring seat (8) through the hook part on the locking ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911095138.3A CN110821880A (en) | 2019-11-11 | 2019-11-11 | Forced transmission double-end-face cartridge mechanical seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911095138.3A CN110821880A (en) | 2019-11-11 | 2019-11-11 | Forced transmission double-end-face cartridge mechanical seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110821880A true CN110821880A (en) | 2020-02-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911095138.3A Pending CN110821880A (en) | 2019-11-11 | 2019-11-11 | Forced transmission double-end-face cartridge mechanical seal |
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| Country | Link |
|---|---|
| CN (1) | CN110821880A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113187759A (en) * | 2021-05-28 | 2021-07-30 | 鸿浩泵业有限公司 | Integrated self-cooling circulating mechanical seal |
| WO2021169783A1 (en) * | 2020-02-25 | 2021-09-02 | 广东德昌电机有限公司 | Cleaning pump |
-
2019
- 2019-11-11 CN CN201911095138.3A patent/CN110821880A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021169783A1 (en) * | 2020-02-25 | 2021-09-02 | 广东德昌电机有限公司 | Cleaning pump |
| CN113187759A (en) * | 2021-05-28 | 2021-07-30 | 鸿浩泵业有限公司 | Integrated self-cooling circulating mechanical seal |
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