CN219974890U - Axial-flow pump seal structure - Google Patents
Axial-flow pump seal structure Download PDFInfo
- Publication number
- CN219974890U CN219974890U CN202321073681.5U CN202321073681U CN219974890U CN 219974890 U CN219974890 U CN 219974890U CN 202321073681 U CN202321073681 U CN 202321073681U CN 219974890 U CN219974890 U CN 219974890U
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- CN
- China
- Prior art keywords
- sealing
- rotating shaft
- sealing cylinder
- ring
- filler
- Prior art date
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Links
- 238000007789 sealing Methods 0.000 claims abstract description 78
- 239000000945 filler Substances 0.000 claims description 43
- 230000000903 blocking effect Effects 0.000 claims description 13
- 238000003860 storage Methods 0.000 claims description 13
- 230000001502 supplementing effect Effects 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 4
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims 4
- 235000017491 Bambusa tulda Nutrition 0.000 claims 4
- 241001330002 Bambuseae Species 0.000 claims 4
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims 4
- 239000011425 bamboo Substances 0.000 claims 4
- 238000012423 maintenance Methods 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 9
- 238000009434 installation Methods 0.000 abstract description 7
- 238000012856 packing Methods 0.000 description 8
- 238000001125 extrusion Methods 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000013461 design Methods 0.000 description 6
- 238000005461 lubrication Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000000153 supplemental effect Effects 0.000 description 1
Landscapes
- Sealing Devices (AREA)
Abstract
The utility model discloses an axial flow pump sealing structure, which relates to the technical field of axial flow pumps and comprises a sealing cylinder, wherein one end of the sealing cylinder is fixedly connected with a mounting flange, a rotating shaft is arranged in the sealing cylinder, one end of the sealing cylinder, which is far away from the mounting flange, is fixedly provided with an end cover, the rotating shaft penetrates through the end cover, a protruding part is fixedly connected with a region of the rotating shaft, which is positioned in the sealing cylinder, a plurality of filling ring grooves are formed in the protruding part, concave rubber rings are fixedly connected to positions, corresponding to the filling ring grooves, in the inner wall of the sealing cylinder, the concave rubber rings are of hollow structures, and the concave rubber rings are clamped in the filling ring grooves. According to the utility model, a section of filling sealing area is formed by utilizing the plurality of concave rubber rings and the filling ring grooves, so that the sealing can be effectively performed, meanwhile, the sealing cylinder can be designed into an integrated structure, and the rotating shaft can be directly inserted into or pulled out of the sealing cylinder during assembly and maintenance, thereby improving the convenience of installation and maintenance of the sealing structure and improving the sealing effect of the sealing structure.
Description
Technical Field
The utility model relates to the technical field of axial flow pumps, in particular to an axial flow pump sealing structure.
Background
The flow pump works by utilizing thrust (lifting force) generated by rotation of the impeller to the water body, and is a high-flow low-lift water pump. The motor and the water pump of the axial flow pump are of a structure which is directly integrated during production, so that the assembly procedures of labor and time consumption, motor, transmission mechanism and water pump axis centering do not need to be carried out on the installation site, and the site installation is convenient and quick.
Because the motor and the water pump form an integral body during production, the tightness of the structure has certain requirements in the use process, if the tightness is bad, the normal operation of the motor is influenced, and in the existing sealing structure of the shaft, the ring and groove structures which are clamped with each other are usually arranged on the shaft and the sealing structure so as to store the filling used for sealing, but the circumferential movement of the shaft and the sealing structure is limited by the structures, and therefore, the sealing structure is usually arranged into two identical semi-surrounding structures to be combined so as to install the shaft, thereby bringing certain inconvenience and increasing the assembly time.
Disclosure of Invention
The utility model aims to provide an axial flow pump sealing structure which solves the defects in the prior art.
The utility model provides the following technical scheme: the axial flow pump sealing structure comprises a sealing cylinder, wherein one end of the sealing cylinder is fixedly connected with a mounting flange, the mounting flange is used for butt joint of an axial flow pump and fixedly mounting, a rotating shaft is arranged in the sealing cylinder, one end of the sealing cylinder, which is far away from the mounting flange, is fixedly provided with an end cover, the rotating shaft penetrates through the end cover, a protruding part is fixedly connected with a region of the rotating shaft, which is positioned in the sealing cylinder, a plurality of filling ring grooves are formed in the protruding part, concave rubber rings are fixedly connected with positions, corresponding to the filling ring grooves, in the inner wall of the sealing cylinder, are hollow structures, the concave rubber rings are clamped in the filling ring grooves, an inner blocking edge matched with the protruding part is fixedly connected with the inner part, one end, which is far away from the inner blocking edge, of the protruding part is provided with a push ring, the push ring is slidably mounted in a region between the rotating shaft and the sealing cylinder, and a first filler is filled between the region from the push ring to the inner blocking edge, the first filler is filled in the area between all the filling ring grooves and the concave rubber ring, the second filler is filled in the concave rubber ring, the viscosity of the second filler is larger than that of the first filler, the first filler and the second filler can be grease, a supplementing channel communicated with the concave rubber ring is arranged in the sealing cylinder, so that when the sealing cylinder is actually installed, a rotating shaft can be inserted into the sealing cylinder by utilizing the soft characteristic of the concave rubber ring, the concave rubber ring can be automatically compressed until the rotating shaft is completely inserted, the concave rubber ring automatically enters into the filling ring grooves to be in sealing contact, then the second filler is filled in each concave rubber ring through the supplementing channel, the concave rubber ring can be forcefully expanded, the filling ring grooves are supplemented, and then the second filler is filled between the concave rubber ring and the filling ring grooves, utilize the push ring to carry out the shutoff for the second filler forms the shutoff between indent rubber ring and the filling ring groove, thereby make a plurality of indent rubber rings and filling ring groove form one section and pack the sealing area, can effectually seal, simultaneously, can design the seal barrel as integral type structure, and when the equipment maintenance, can directly insert the pivot or extract the seal barrel, need not to carry out half surrounding combination formula design to the seal barrel, very big improvement seal structure installation maintenance's convenience, simultaneously, with the help of the mutual extrusion and the lubrication of two kinds of fillers, also great improvement seal structure's sealed effect.
Preferably, the cross section shape of the indent rubber ring is trapezoidal, and one side of the trapezoid, which is far away from the end cover, is parallel to the side wall of the filling ring groove, and one side of the trapezoid, which is close to the end cover, is intersected with the side wall of the trapezoid, which is close to the side wall of the filling ring groove, so that after the indent rubber ring is molded by the second filler, the indent rubber ring can be closed to the pump body under the extrusion of the first filler to the direction of the pump body, and therefore, the gap between one side of the indent rubber ring, which is close to the pump body, and the filling ring groove can be reduced, and the sealing effect is improved.
Preferably, the end cover is provided with a storage cavity, the storage cavity is communicated with the supplementing channel, the storage cavity is internally provided with a second filler, the storage cavity is internally provided with a pressurizing bolt in a threaded insertion manner, and then after the second filler is filled, the pressurizing bolt can be rotated to pressurize the inside of the concave rubber ring, so that the stabilizing effect of the concave rubber ring is improved.
Preferably, one end of the push ring far away from the rotating shaft is provided with a threaded collar, the threaded collar is in threaded sleeve connection with the rotating shaft, and the screwing direction of the threaded collar to the push ring is opposite to the rotating shaft, so that when the rotating shaft works, the threaded collar can automatically push the push ring to push the first filler, and the first filler can be stably kept between the protruding part and the sealing cylinder for effective sealing under the extrusion of water pressure in the pump.
Preferably, one end of the protruding part, which is close to the inner blocking edge, is in running fit with the inner blocking edge, annular grooves are formed between the rotating shaft and the inner blocking edge, smooth metal rings are arranged between the two groups of annular grooves, and then the protruding part and the sealing cylinder can be limited, and a certain blocking is generated for the first filler.
In the technical scheme, the utility model has the technical effects and advantages that:
according to the utility model, a section of filling sealing area is formed by the plurality of concave rubber rings and the filling ring grooves, so that the sealing can be effectively carried out, meanwhile, the sealing cylinder can be designed into an integrated structure, and the rotating shaft can be directly inserted into or pulled out of the sealing cylinder during assembly and maintenance, so that the semi-surrounding combined design of the sealing cylinder is not needed, the convenience of the installation and maintenance of the sealing structure is greatly improved, and meanwhile, the sealing effect of the sealing structure is greatly improved by means of mutual extrusion and lubrication of two fillers.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments will be briefly described below.
Fig. 1 is a cross-sectional view of the overall structure of the present utility model.
Fig. 2 is a schematic view of the overall structure of the seal cartridge of the present utility model.
Fig. 3 is an enlarged view of the structure of the portion a of fig. 1 according to the present utility model.
Fig. 4 is an enlarged view of the B part structure of fig. 1 according to the present utility model.
Reference numerals illustrate:
1. a sealing cylinder; 11. a mounting flange; 12. a supplemental passage; 13. an inner stop edge; 2. a rotating shaft; 21. a protruding portion; 22. filling the ring groove; 23. a push ring; 24. a threaded collar; 3. an end cap; 31. a storage chamber; 32. a pressing bolt; 4. a concave rubber ring; 5. a smooth metal ring.
Detailed Description
Example 1
The utility model provides an axial flow pump sealing structure as shown in figures 1-4, which comprises a sealing cylinder 1, wherein one end of the sealing cylinder 1 is fixedly connected with a mounting flange 11, the mounting flange 11 is used for butting an axial flow pump and fixedly mounting the axial flow pump, a rotating shaft 2 is arranged in the sealing cylinder 1, one end of the sealing cylinder 1 far away from the mounting flange 11 is fixedly provided with an end cover 3, the rotating shaft 2 penetrates through the end cover 3, a region of the rotating shaft 2 positioned in the sealing cylinder 1 is fixedly connected with a protruding part 21, a plurality of filling ring grooves 22 are arranged on the protruding part 21, the positions, corresponding to the filling ring grooves 22, in the inner wall of the sealing cylinder 1 are fixedly connected with concave rubber rings 4, the concave rubber rings 4 are hollow structures, the concave rubber rings 4 are clamped in the filling ring grooves 22, the inner part of the sealing cylinder 1 close to one end of the mounting flange 11 is fixedly connected with an inner baffle edge 13 matched with the protruding part 21, the end of the protruding part 21 far away from the inner baffle edge 13 is provided with a push ring 23, the push ring 23 is slidably arranged in the area between the rotating shaft 2 and the sealing cylinder 1, a first filler is filled between the push ring 23 and the area between the inner baffle edge 13, the first filler is fully distributed in the area between all the filling ring grooves 22 and the inner concave rubber ring 4, the inner part of the inner concave rubber ring 4 is filled with a second filler, the viscosity of the second filler is larger than that of the first filler, the first filler and the second filler can be grease, the sealing cylinder 1 is provided with a supplementing channel 12 communicated with the inner concave rubber ring 4, so that the rotating shaft 2 can be inserted into the sealing cylinder 1 by utilizing the soft characteristic of the inner concave rubber ring 4 during actual installation, the inner concave rubber ring 4 can be automatically compressed until the rotating shaft 2 is fully inserted, the inner concave rubber ring 4 can automatically enter the filling ring grooves 22 for sealing contact, and then, the second filler is filled into each concave rubber ring 4 through the supplementing channel 12, so that the concave rubber rings 4 can be forcefully expanded and supplement the filling ring grooves 22, then, the second filler is filled between the concave rubber rings 4 and the filling ring grooves 22, and the push ring 23 is used for plugging, so that the second filler plugs the space between the concave rubber rings 4 and the filling ring grooves 22, a section of filling sealing area is formed between the concave rubber rings 4 and the filling ring grooves 22, the sealing can be effectively carried out, meanwhile, the sealing cylinder 1 can be designed into an integral structure, and the rotating shaft 2 can be directly inserted into or pulled out of the sealing cylinder 1 during assembly and maintenance, the semi-surrounding combined design of the sealing cylinder 1 is not needed, the convenience of the installation and maintenance of the sealing structure is greatly improved, and meanwhile, the sealing effect of the sealing structure is greatly improved by means of mutual extrusion and lubrication of the two fillers.
Further, in the above technical scheme, the cross section shape of the indent rubber ring 4 is trapezoidal, and one side of the trapezoid, which is far away from the end cover 3, is parallel to the adjacent side wall of the filling ring groove 22, and one side of the trapezoid, which is close to the end cover 3, is intersected with the adjacent side wall of the trapezoid, so that after the indent rubber ring 4 is molded by the second filler, the indent rubber ring 4 can be closed to the pump body under the extrusion of the first filler to the direction of the pump body, thereby reducing the gap between one side of the indent rubber ring 4, which is close to the pump body, and the filling ring groove 22, and improving the sealing effect.
Further, in the above technical scheme, be provided with storage chamber 31 on the end cover 3, storage chamber 31 and supplementary passageway 12 intercommunication store the second filler in the storage chamber 31, have compression bolt 32 in the screw thread grafting in the storage chamber 31, and then after having filled the second filler, can be through the inside pressurization of rotation compression bolt 32 indent rubber ring 4, improve indent rubber ring 4's stable effect.
The one end that push ring 23 kept away from pivot 2 is provided with screw thread lantern ring 24, and screw thread lantern ring 24 screw thread cup joints on pivot 2, and screw thread lantern ring 24 produces the direction of screwing to push ring 23 and the work of pivot 2 turns to opposite setting to when pivot 2 works, make screw thread lantern ring 24 can produce thrust to push ring 23 voluntarily, pressurize first packing, and under the extrusion of pump internal water pressure, make effective sealing between protruding portion 21 and seal cylinder 1 of keeping that first packing can be stable.
Furthermore, in the above technical scheme, the protruding portion 21 is close to the end of the inner retaining edge 13 and is in running fit with the inner retaining edge 13, annular grooves are formed between the rotating shaft 2 and the inner retaining edge 13, smooth metal rings 5 are installed between the two groups of annular grooves, and therefore the protruding portion 21 and the sealing cylinder 1 can be limited, and a certain sealing effect is generated on the first filler.
Working principle: through setting up the packing annular 22 cooperation on a plurality of indent rubber rings 4 and the protruding portion 21 in seal tube 1, when actually installing, can utilize the softness characteristic of indent rubber ring 4, can be between with the pivot 2 insert to seal tube 1 in, indent rubber ring 4 can compress voluntarily, until after pivot 2 inserts completely, indent rubber ring 4 can get into packing annular 22 voluntarily and carry out sealing contact, then fill the second filler in each indent rubber ring 4 through supplementary passageway 12, can make indent rubber ring 4 forcefully expand, and supplement packing annular 22, then fill the second filler between indent rubber ring 4 and the packing annular 22, utilize push ring 23 to carry out the shutoff, thereby make second filler form the shutoff between indent rubber ring 4 and the packing annular 22, thereby make a plurality of indent rubber rings 4 and packing annular 22 form one section and fill the sealing area, can effectually seal, simultaneously, can design seal tube 1 as an integral type structure, and when the equipment is in maintenance, can directly insert or seal tube 1, need not to carry out the seal tube 1 to semi-enclosure type seal tube design, the seal tube has improved greatly, and the seal tube has improved the seal tube has been installed with the help of both sides and has greatly improved the seal tube, simultaneously, the convenient and fast maintenance structure.
Claims (5)
1. The utility model provides an axial-flow pump seal structure, includes sealed section of thick bamboo (1), the one end fixedly connected with mounting flange (11) of sealed section of thick bamboo (1), the inside of sealed section of thick bamboo (1) is provided with pivot (2), the one end fixed mounting that mounting flange (11) was kept away from to sealed section of thick bamboo (1) has end cover (3), pivot (2) run through end cover (3), its characterized in that: the sealing device is characterized in that the rotating shaft (2) is fixedly connected with the protruding portion (21) in the area inside the sealing cylinder (1), a plurality of filling ring grooves (22) are formed in the protruding portion (21), concave rubber rings (4) are fixedly connected to the inner wall of the sealing cylinder (1) at positions corresponding to the filling ring grooves (22), the concave rubber rings (4) are of hollow structures, the concave rubber rings (4) are clamped in the filling ring grooves (22), an inner blocking edge (13) matched with the protruding portion (21) is fixedly connected to the inner portion, close to one end of the mounting flange (11), of the sealing cylinder (1), a push ring (23) is arranged at one end, far away from the inner blocking edge (13), of the protruding portion (21), a first filler is filled between the inner portion of the push ring (23) and the inner blocking edge (13), a second filler is filled in the inner portion of the concave rubber rings (4), the viscosity of the second filler is larger than that of the first filler, and a channel (12) communicated with the concave rubber rings (4) is formed in the sealing cylinder (1).
2. An axial flow pump seal structure according to claim 1, wherein: the cross section of the concave rubber ring (4) is trapezoidal, one side of the trapezoid, which is far away from the end cover (3), is parallel to the nearby side wall of the filling ring groove (22), and one side of the trapezoid, which is close to the end cover (3), is intersected with the nearby side wall of the trapezoid.
3. An axial flow pump seal structure according to claim 2, wherein: the end cover (3) is provided with a storage cavity (31), the storage cavity (31) is communicated with the supplementing channel (12), a second filler is stored in the storage cavity (31), and a pressurizing bolt (32) is inserted into the storage cavity (31) in a threaded mode.
4. An axial flow pump seal structure according to claim 1, wherein: one end of the push ring (23) far away from the rotating shaft (2) is provided with a threaded collar (24), the threaded collar (24) is in threaded sleeve connection with the rotating shaft (2), and the screwing direction of the threaded collar (24) to the push ring (23) is opposite to the working steering direction of the rotating shaft (2).
5. An axial flow pump seal structure according to claim 1, wherein: one end of the protruding part (21) close to the inner blocking edge (13) is in running fit with the inner blocking edge (13), annular grooves are formed between the rotating shaft (2) and the inner blocking edge (13), and a smooth metal ring (5) is arranged between the two groups of annular grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321073681.5U CN219974890U (en) | 2023-05-08 | 2023-05-08 | Axial-flow pump seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321073681.5U CN219974890U (en) | 2023-05-08 | 2023-05-08 | Axial-flow pump seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219974890U true CN219974890U (en) | 2023-11-07 |
Family
ID=88594024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321073681.5U Active CN219974890U (en) | 2023-05-08 | 2023-05-08 | Axial-flow pump seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219974890U (en) |
-
2023
- 2023-05-08 CN CN202321073681.5U patent/CN219974890U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |