CN216742147U - Mechanical sealing device for integrated combined pump - Google Patents
Mechanical sealing device for integrated combined pump Download PDFInfo
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- CN216742147U CN216742147U CN202220472062.2U CN202220472062U CN216742147U CN 216742147 U CN216742147 U CN 216742147U CN 202220472062 U CN202220472062 U CN 202220472062U CN 216742147 U CN216742147 U CN 216742147U
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Abstract
The utility model discloses a mechanical sealing device for an integrated combined pump, and belongs to the technical field of mechanical sealing. The labyrinth machine sealing seat is fixedly connected with the pump body, the spring seat is in interference heat-sealing arrangement in the labyrinth machine sealing seat, and the spring is arranged in a mounting hole formed in the spring seat. The floating static ring and the floating movable ring are respectively connected with the spring seat and the positioning sleeve in a clamping manner, and the right end surface of the floating static ring and the left end surface of the floating movable ring are tightly attached to form a main sealing surface so as to form a main sealing mechanism. The device consists of a main sealing mechanism and 5 auxiliary sealing mechanisms, has the advantages of reasonable structural design, convenient installation and maintenance, stable work and strong pressure resistance, and is a mechanical sealing device for the pump, which has the success rate of combined installation reaching 100 percent and realizes zero leakage sealing.
Description
Technical Field
The utility model belongs to the technical field of mechanical sealing, and relates to a mechanical sealing device, in particular to a mechanical sealing device for an integrated combined pump.
Background
In the prior art, the sealing of the pump still mainly adopts the packing and the mechanical sealing, however, the sealing requirement of the pump is continuously improved along with the improvement of the environmental protection and the human health requirement, the mechanical sealing technology is widely applied to the fields of national defense, electric power, chemical industry, petroleum, metallurgy, transportation, medicine, food, cosmetics and the like, has the characteristics of stable work, strong pressure resistance, good sealing effect and the like, and the mechanical sealing is gradually the mainstream in the practical application instead of the packing sealing. The existing mechanical sealing device is still insufficient in installation due to structural design, the sealing efficiency is generally about 80%, especially the high-pressure fluid sealing success rate containing solid particles is lower, and the service life is shorter. Thus, the present apparatus was developed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior mechanical sealing device technology and provide an integrated combined mechanical sealing device for a pump, which adopts an integrated combined mechanical sealing combination mode, is formed by combining labyrinth seal and mechanical seal, and consists of two dynamic sealing mechanisms and 4 static sealing mechanisms in total, has the advantages of reasonable structural design, convenient installation and maintenance, stable work and strong pressure resistance, has the combined installation success rate of 100 percent, and realizes zero-leakage sealing
In order to realize the purpose, the utility model is realized by the following technical scheme: the main technical scheme is that the mechanical sealing device for the integrated combined pump comprises a spring seat 1, a spring 2, a spring retainer ring 3, a floating static ring 4, a static ring sealing ring 5, a labyrinth machine sealing seat 6, a floating dynamic ring 7, a dynamic ring sealing ring 8, a positioning sleeve sealing ring 9 and a positioning sleeve 10 which are sequentially arranged from left to right. To form a floating dynamic seal assembly and a floating static seal assembly.
Labyrinth machine seals seat 6 and pump body fixed connection, and spring holder 1 interference hot packing is in labyrinth machine seals seat 6, and spring 2 is installed in the mounting hole that sets up on spring holder 1.
The right end of the spring seat 1 is provided with a spring seat boss 11 matched with a groove position arranged at the left end of the floating static ring 4, the left end of the positioning sleeve 10 is provided with a positioning sleeve boss 101 matched with a groove position arranged at the right end of the floating movable ring 7, so that the floating static ring 4 and the floating movable ring 7 are fixedly connected with the spring seat 1 and the positioning sleeve 10 in a clamping manner respectively, and meanwhile, the right end face of the floating static ring 4 and the left end face of the floating movable ring 7 are tightly attached to form a main sealing face so as to form a main sealing mechanism.
The locating sleeve 10 is located with the pump shaft 12 through a pump shaft boss 13 on the pump shaft 12 and is in driving connection with a key 14.
The further technical scheme is that a spring retainer ring 3 is arranged between the spring 2 and the floating static ring 4, and the spring retainer ring 3 and the floating static ring 4 are connected with a spring seat boss 11 on the spring seat 1 in a positioning and guiding manner.
The technical scheme is that the static ring sealing ring 5 is arranged in a sealing groove formed in the inner surface of a labyrinth machine sealing seat 6.
The further technical scheme is that the movable ring sealing ring 8 is arranged in a sealing groove arranged in the inner cavity of the floating movable ring 7.
The further technical scheme is that the locating sleeve sealing ring 9 is arranged on a sealing boss 15 on the left of the locating sleeve 10.
The further technical scheme is that the labyrinth machine seal seat sealing ring 16 is arranged in a sealing groove formed in the outer surface of the labyrinth machine seal seat 6.
The technical scheme is that three annular grooves are formed in the inner surface of the labyrinth seal seat 6, and the three annular grooves are matched with the outer surface of the positioning sleeve 10 to form a labyrinth seal pair structure.
Compared with the prior art, the utility model has the following advantages:
1. because this device comprises unsteady dynamic seal subassembly and unsteady static seal subassembly, the sound ring can freely remove along the axial, forms unsteady self-adaptation sealing mechanism.
A main sealing surface which is always contacted is arranged between the floating dynamic sealing component and the floating static sealing component to form a main sealing mechanism. The device is composed of a main sealing mechanism and 5 auxiliary sealing mechanisms, the first labyrinth seal mainly reduces pressure and seals large-particle objects, the working pressure of a subsequent mechanical sealing assembly is reduced, the working environment of the subsequent mechanical sealing assembly is optimized, and the service life of the subsequent mechanical sealing assembly is prolonged. The device has the advantages of reasonable structural design, convenient installation and maintenance, stable work and strong pressure resistance, and is a mechanical sealing device for the pump, which has the combined installation success rate of 100 percent and realizes zero leakage sealing.
2. Because the mechanical seal assembled in the pump is moved to the bench outside the pump, the sealing oil films of the dynamic and static rings can be formed by grinding outside the pump, and the power of the assembled installation can reach 100%.
Drawings
Fig. 1 is a front sectional structural schematic view of the present invention.
In the figure: 1. the labyrinth seal structure comprises a spring seat, 2, a spring, 3, a spring retainer ring, 4, a floating static ring, 5, a static ring seal ring, 6, a labyrinth seal seat, 7, a floating dynamic ring, 8, a dynamic ring seal ring, 9, a locating sleeve seal ring, 10, a locating sleeve, 101, a locating sleeve boss, 11, a spring seat boss, 12, a pump shaft, 13, a pump shaft boss, 14, a key, 15, a locating sleeve seal boss 16 and a labyrinth seal seat seal ring.
Detailed Description
The utility model will be further understood by the following non-limiting examples.
As shown in fig. 1, the mechanical sealing device for the integrated combined pump is sleeved between a pump shaft 12 and a pump casing, and comprises a spring seat 1, a spring 2, a spring retainer ring 3, a floating static ring 4, a static ring seal ring 5, a labyrinth seal seat 6, a floating dynamic ring 7, a dynamic ring seal ring 8, a locating sleeve seal ring 9 and a locating sleeve 10 which are sequentially arranged from left to right. To form a floating dynamic seal assembly and a floating static seal assembly.
Labyrinth machine seals seat 6 and the pump body through screw fixed connection, labyrinth machine seals seat sealing washer 16 installation and labyrinth machine seals in the seal groove of seat 6 surface, and spring holder 1 interference hot-packed is in labyrinth machine seals seat 6, and spring 2 installs in the mounting hole that sets up on spring holder 1.
The right end of the spring seat 1 is provided with a spring seat boss 11 matched with a groove position arranged at the left end of the floating static ring 4, the left end of the positioning sleeve 10 is provided with a positioning sleeve boss 101 matched with a groove position arranged at the right end of the floating movable ring 7, the length of the boss is about 4mm, therefore, the floating static ring 4 and the floating movable ring 7 are fixedly connected with the spring seat 1 and the positioning sleeve 10 in a clamping manner respectively, and meanwhile, the right end face of the floating static ring 4 and the left end face of the floating movable ring 7 are tightly attached to form a main sealing face so as to form a main sealing mechanism.
The locating sleeve 10 is located with the pump shaft 12 through a pump shaft boss 13 on the pump shaft 12 and is in driving connection with a key 14 installed on the pump shaft 12.
And a spring retainer ring 3 is arranged between the spring 2 and the floating static ring 4, and the spring retainer ring 3 and the floating static ring 4 are positioned, guided and connected with a spring seat boss 11 on the spring seat 1.
The static ring seal ring 5 is arranged in a seal groove arranged on the inner surface of the labyrinth machine seal seat 6. The movable ring sealing ring 8 is arranged in a sealing groove arranged in the inner cavity of the floating movable ring 7.
The locating sleeve sealing ring 9 is arranged on a sealing boss 15 on the left of the locating sleeve 10.
The labyrinth machine seal seat sealing ring 16 is arranged in a sealing groove arranged on the outer surface of the labyrinth machine seal seat 6.
Three annular grooves are arranged on the inner surface of the labyrinth seal seat 6, and the three annular grooves are matched with the outer surface of the positioning sleeve 10 to form a labyrinth seal pair structure.
The installation process of the utility model is as follows:
1. firstly, a spring seat 1, a spring 2, a spring retainer ring 3, a floating static ring 4 and a static ring are arranged
Cleaning and placing the ring seal ring 5, the labyrinth machine seal seat 6, the labyrinth machine seal seat seal ring 16, the floating movable ring 7, the movable ring seal ring 8, the positioning sleeve seal ring 9 and the positioning sleeve 10 on an assembly bench;
2. sending the labyrinth seal seat 6 into a heating chamber to be heated to an assembly temperature, horizontally placing a spring hole of a spring seat 1 on a bench platform upwards, vertically placing a spring 2 into a corresponding hole of the spring seat 1, horizontally placing a spring retainer ring 3 on the spring 2 (guided and limited by a guide boss 11 of the spring seat 1) after the spring 2 is in place, taking out the heated labyrinth seal seat 6 to be hot-mounted on a corresponding position of the spring seat 1 after the spring retainer ring 3 is in place, ensuring that mounting base surfaces of the spring seat 1 and the labyrinth seal seat 6 are completely contacted with the bench platform surface to ensure the coaxiality of the two,
3. after the labyrinth seal seat 6 is cooled to room temperature, the floating static ring 4 and the floating dynamic ring 7 are combined and ground (a reliable oil film is formed on a sealing surface), and then the static ring seal ring 5, the floating static ring 4 and floating dynamic ring 7 assembly, the dynamic ring seal ring 8 and the labyrinth seal seat seal ring 16 are sequentially arranged for standby;
4. installing a key 14 at a corresponding position of a pump shaft 12, sequentially installing a locating sleeve 10 and a locating sleeve sealing ring 9, and then fixedly connecting the labyrinth seal seat assembly which is assembled in place on the pump body through screws, and completing the installation of the mechanical sealing device for the integrated combined pump.
The sealing device is composed of a main sealing mechanism and 5 auxiliary sealing mechanisms, and realizes a zero-leakage sealing working process for high-pressure and particle-containing media. High-pressure fluid in the pump is firstly subjected to pressure reduction, speed reduction and interception by labyrinth seal, large-particle solids (larger than 0.5mm) are intercepted, the fluid is statically and reliably sealed by a positioning sleeve sealing ring 9 and a moving ring sealing ring 8 along the axial leakage, the fluid leaked along the inner surface of a labyrinth seal seat is reliably sealed by a static ring sealing ring 5 and an oil film surface of a moving static ring, and the fluid leaked along the outer surface of the labyrinth seal seat is statically and reliably sealed by a labyrinth seal seat sealing ring 16, so that the reliable shaft end seal of the whole pump is ensured.
Claims (7)
1. A mechanical sealing device for an integrated combined pump is sleeved between a pump shaft (12) and a pump shell and comprises a spring seat (1), a spring (2), a spring retainer ring (3), a floating static ring (4), a static ring sealing ring (5), a labyrinth machine seal seat (6), a floating dynamic ring (7), a dynamic ring sealing ring (8), a positioning sleeve sealing ring (9) and a positioning sleeve (10) which are sequentially arranged from left to right, and is characterized in that the labyrinth machine seal seat (6) is fixedly connected with the pump body, the spring seat (1) is in interference hot-installation in the labyrinth machine seal seat (6), the spring (2) is arranged in a mounting hole formed in the spring seat (1), the right end of the spring seat (1) is provided with a spring seat boss (11) matched with the groove position formed at the left end of the floating static ring (4), the left end of the positioning sleeve (10) is provided with a positioning sleeve boss (101) matched with the groove position formed at the right end of the floating dynamic ring (7), therefore, the floating static ring (4) and the floating dynamic ring (7) are respectively and fixedly connected with the spring seat (1) and the positioning sleeve (10) in a clamping mode, meanwhile, the right end face of the floating static ring (4) and the left end face of the floating dynamic ring (7) are tightly attached to form a main sealing face, and the positioning sleeve (10) is positioned with the pump shaft (12) through a pump shaft boss (13) on the pump shaft (12) and is in driving connection through a key (14).
2. The mechanical sealing device for the integrated combined pump according to claim 1, wherein a spring retainer ring (3) is arranged between the spring (2) and the floating stationary ring (4), and the spring retainer ring (3) and the floating stationary ring (4) are connected with a spring seat boss (11) on the spring seat (1) in a positioning and guiding manner.
3. The mechanical seal device for the integrated combined pump according to claim 1, wherein the stationary ring seal (5) is installed in a seal groove provided on an inner surface of a labyrinth seal seat (6).
4. The mechanical seal device for the integrated combined pump according to claim 1, wherein the dynamic ring seal ring (8) is installed in a seal groove provided in an inner cavity of the floating dynamic ring (7).
5. The mechanical seal device for the integrated combined pump according to claim 1, wherein the locating sleeve sealing ring (9) is mounted on a sealing boss (15) on the left of the locating sleeve (10).
6. The mechanical seal device for the integrated combination pump according to claim 1, wherein the labyrinth seal seat sealing ring (16) is installed in a sealing groove formed on the outer surface of the labyrinth seal seat (6).
7. The mechanical sealing device for the integrated combination pump according to claim 1, wherein three annular grooves are formed on the inner surface of the labyrinth seal seat (6), and the three annular grooves and the outer surface of the positioning sleeve (10) are matched to form a labyrinth seal pair structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220472062.2U CN216742147U (en) | 2022-03-07 | 2022-03-07 | Mechanical sealing device for integrated combined pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220472062.2U CN216742147U (en) | 2022-03-07 | 2022-03-07 | Mechanical sealing device for integrated combined pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216742147U true CN216742147U (en) | 2022-06-14 |
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ID=81921743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220472062.2U Active CN216742147U (en) | 2022-03-07 | 2022-03-07 | Mechanical sealing device for integrated combined pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216742147U (en) |
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2022
- 2022-03-07 CN CN202220472062.2U patent/CN216742147U/en active Active
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