CN220791510U - Vertical double-suction pump - Google Patents
Vertical double-suction pump Download PDFInfo
- Publication number
- CN220791510U CN220791510U CN202322393205.8U CN202322393205U CN220791510U CN 220791510 U CN220791510 U CN 220791510U CN 202322393205 U CN202322393205 U CN 202322393205U CN 220791510 U CN220791510 U CN 220791510U
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- water pump
- cover
- pump shaft
- shaft
- motor
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 113
- 238000009434 installation Methods 0.000 claims description 37
- 230000008878 coupling Effects 0.000 claims description 20
- 238000010168 coupling process Methods 0.000 claims description 20
- 238000005859 coupling reaction Methods 0.000 claims description 20
- 210000004907 gland Anatomy 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 229910001018 Cast iron Inorganic materials 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 125000003003 spiro group Chemical group 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 9
- 238000005461 lubrication Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- 229910001141 Ductile iron Inorganic materials 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical group [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229910001039 duplex stainless steel Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model belongs to the technical field of water pumps, in particular to a vertical double-suction pump, which comprises a motor, a pump body and a water pump shaft, wherein a double-suction impeller sleeved on the water pump shaft is arranged in the pump body, the upper end of the water pump shaft extends out of a rotating shaft of the pump body and is connected with the motor, the double-suction impeller is sleeved at the bottom of the water pump shaft, a bearing and a mechanical seal are not arranged between the bottom of the water pump shaft and the pump body, a pump cover is arranged on a cover above the pump body, a sliding bearing sleeved on the water pump shaft is arranged between the pump cover and the water pump shaft, a mechanical seal cover is arranged on the cover above the pump cover, and the mechanical seal cover is rotationally sealed with the water pump shaft through a mechanical seal sleeved on the water pump shaft. The utility model is convenient for maintenance and replacement of the mechanical seal, and solves the problem of damage to the lower bearing and the mechanical seal.
Description
Technical field:
the utility model belongs to the technical field of water pumps, and particularly relates to a vertical double-suction pump.
The background technology is as follows:
the Chinese patent CN200978822Y discloses a novel vertical double-suction pump with bearing configuration, which comprises a base, a pump body, a pump cover, a bracket, a motor and a coupler, wherein an upper bearing body in the pump body, a deep groove ball bearing in the upper bearing body, a lower bearing body, a pump shaft, an impeller and a mechanical seal, the lower bearing body is internally provided with the deep groove ball bearing, and the inner ring of the deep groove ball bearing is sleeved with the pump shaft. A pump cover at the lower part of the pump body is connected with a pump shaft in a mechanical sealing way.
The vertical double suction pump has the following defects: 1. the upper part of the vertical double-suction pump adopts a structure of mechanical seal and deep groove ball bearing, the deep groove ball bearing is arranged above the mechanical seal, and when the mechanical seal needs to be replaced in later maintenance, the deep groove ball bearing needs to be detached firstly, so that the disassembly and the assembly are troublesome, and the maintenance is inconvenient; 2. the lower part of the vertical double suction pump adopts a structure of adding a deep groove ball bearing by a mechanical seal, the mechanical seal is arranged above the deep groove ball bearing, when the mechanical seal leaks water, the deep groove ball bearing is soaked by water, and the mechanical seal and the deep groove ball bearing at the lower part are very inconvenient to replace during maintenance due to smaller operation space.
The utility model comprises the following steps:
the utility model aims to provide a vertical double-suction pump which is convenient for maintenance and replacement of a mechanical seal and solves the problem of damage to a lower bearing and the mechanical seal.
The utility model is realized in the following way:
the utility model provides a vertical double suction pump, includes motor, pump body and water pump shaft, be equipped with the cover in the pump body and adorn at the epaxial double suction impeller of water pump, the pivot of pump body coupling motor is stretched out to water pump shaft upper end, double suction impeller cover dress is in water pump shaft bottom, and does not establish bearing and mechanical seal between water pump shaft bottom and the pump body, pump body top lid is equipped with the pump cover, is equipped with the slide bearing of suit on the water pump shaft between pump cover and the water pump shaft, pump cover top lid is equipped with mechanical seal gland, mechanical seal gland through the cover at the epaxial mechanical seal of water pump and water pump shaft rotation seal.
In the vertical double-suction pump, the pump body comprises a shell and a volute arranged in the shell, the pump cover comprises an upper cover, a lower cover and a bearing installation part, the upper cover is in sealing connection with the shell, the lower cover is in sealing connection with the volute, the bearing installation part is arranged between the upper cover and the lower cover, the machine sealing cover is arranged on the upper cover, and the sliding bearing is arranged between the bearing installation part and the water pump shaft.
In the vertical double suction pump, the housing and the volute are of an integrated structure.
In the above-mentioned vertical double suction pump, one side of the bearing mounting portion is connected with the upper cover through the upper connecting portion, and the other side is connected with the lower cover through the lower connecting portion.
In the above-mentioned vertical double suction pump, the upper cover, the lower cover, the bearing mounting portion, the upper connecting portion, and the lower connecting portion are of an integral structure.
In the above-mentioned vertical double-suction pump, a first limiting boss for limiting the sliding bearing downwards is arranged at the lower end of the bearing mounting part, and a cover plate for limiting the sliding bearing upwards is arranged on the upper cover of the bearing mounting part.
In the vertical double-suction pump, the bearing installation part is a hollow cylinder, the first limiting boss and the bearing installation part are of an integrated structure, and the cover plate is connected above the bearing installation part through screws.
In the vertical double-suction pump, the mechanical seal gland is provided with the mounting groove for mounting the mechanical seal, the upper end face of the mounting groove is used for carrying out upper limit on the mechanical seal, and the water pump shaft is provided with the second limit boss for carrying out lower limit on the mechanical seal.
In the above-mentioned vertical double suction pump, the stationary ring of mechanical seal sets up in the mounting groove and with mounting groove's up end conflict spacing, mechanical seal's movable ring is spacing with spacing boss second conflict.
In the vertical double-suction pump, a motor coupler is arranged at the lower end of a rotating shaft of the motor, a water pump coupler is arranged at the upper end of a water pump shaft, and an intermediate coupler is detachably connected between the motor coupler and the water pump coupler.
In the vertical double suction pump, the motor coupler is provided with the first mounting flange, the middle coupler is provided with the second mounting flange and the third mounting flange at the upper end, the water pump coupler is provided with the fourth mounting flange, the first mounting flange is detachably connected with the second mounting flange through a fastening piece, and the fourth mounting flange is detachably connected with the third mounting flange through a fastening piece.
In the above-mentioned vertical double suction pump, the structure of the fastener may be: the fastener is a screw, the screw passes through the second installation convex edge and is in threaded connection with the first installation convex edge, and the screw passes through the fourth installation convex edge and is in threaded connection with the third installation convex edge.
In the above-mentioned vertical double suction pump, the structure of the fastener may be: the fastener is a bolt and a nut, the bolt passes through the second installation convex edge, the first installation convex edge and the nut in a threaded connection mode, and the bolt passes through the fourth installation convex edge and the third installation convex edge and the nut in a threaded connection mode.
In the vertical double-suction pump, a first baffle plate for limiting the motor coupler downwards is arranged below the rotating shaft of the motor, a screw penetrates through the first baffle plate to be screwed with the rotating shaft of the motor, and a first set screw penetrates through the motor coupler to be tightly fixed on the rotating shaft of the motor; the water pump shaft is characterized in that a second baffle plate for carrying out upper limit on the water pump shaft is arranged above the water pump shaft, a screw penetrates through the second baffle plate and is in threaded connection with the water pump shaft, a third limit boss for carrying out lower limit on the water pump shaft is arranged on the water pump shaft, and a second set screw penetrates through the water pump shaft and is tightly fixed on the water pump shaft.
In the above-mentioned vertical double suction pump, the water pump shaft is made of stainless steel, cast iron or copper, and the sliding bearing is made of copper.
In the vertical double-suction pump, a water pump bracket is arranged below the motor, and the pump body is fixedly connected in the water pump bracket.
Compared with the prior art, the utility model has the outstanding advantages that:
1. the water pump shaft and the pump body of the vertical double-suction pump are rotationally connected through the sliding bearing, a water lubrication mode in the pump is adopted, and when the mechanical seal is required to be replaced in later maintenance, the mechanical seal is easy to detach and assemble and convenient to maintain as the deep groove ball bearing is not arranged in the pump body; the lower part of the vertical double-suction pump is not provided with a bearing and a mechanical seal, so that the damage problem of the bearing and the mechanical seal at the lower part is solved;
2. the motor shaft coupler is arranged at the lower end of the rotating shaft of the motor, the water pump shaft is provided with the water pump shaft coupler at the upper end, and the middle coupler is detachably connected between the motor shaft coupler and the water pump shaft coupler, so that the mechanical seal is replaced and maintained under the condition of not disassembling the motor and other parts, and the maintenance is convenient.
Description of the drawings:
FIG. 1 is a cross-sectional view of the present utility model;
FIG. 2 is an enlarged view at A of FIG. 1;
FIG. 3 is a cross-sectional view of the pump body of the present utility model;
fig. 4 is an enlarged view at B of fig. 1.
The drawings in the specification: 1. a motor; 2. a pump body; 2a, a housing; 2b, a volute; 3. a water pump shaft; 3a, a limiting boss II; 3b, a limit boss III; 4. double suction impeller; 5. a pump cover; 5a, an upper cover; 5b, a lower cover; 5c, a bearing mounting part; 5d, an upper connecting part; 5e, a lower connecting part; 5f, limiting boss I; 6. a sliding bearing; 7. a gland is sealed; 7a, mounting grooves; 8. mechanical sealing; 9. a cover plate; 10. a motor coupling; 10a, installing a first convex edge; 11. a water pump coupling; 11a, mounting a convex edge IV; 12. an intermediate coupling; 12a, installing a convex edge II; 12b, mounting a convex edge III; 13. a first baffle; 14. a first fastening screw; 15. a second baffle; 16. a second fastening screw; 17. a water pump bracket; 18. and a mouth ring.
The specific embodiment is as follows:
the utility model is further described below with reference to the specific examples, see fig. 1-4:
the utility model provides a vertical double suction pump, includes motor 1, pump body 2 and water pump shaft 3, be equipped with the double suction impeller 4 of suit on water pump shaft 3 in the pump body 2, the pivot of motor 1 is connected to water pump shaft 3 upper end extension pump body 2, double suction impeller 4 suit is in water pump shaft 3 bottom, and does not establish bearing and mechanical seal between water pump shaft 3 bottom and the pump body 2, pump body 2 top lid is equipped with pump cover 5, is equipped with slide bearing 6 of suit on water pump shaft 3 between pump cover 5 and the water pump shaft 3, pump cover 5 top lid is equipped with mechanical seal gland 7, mechanical seal gland 8 through the suit on water pump shaft 3 and water pump shaft 3 rotation seal.
As shown in fig. 1-3, the water pump shaft 3 and the pump body 2 of the vertical double-suction pump are rotationally connected through the sliding bearing 6, the sliding bearing 6 is larger than a deep groove ball bearing in a water lubrication mode in the pump, the sliding bearing 6 has a larger gap with the water pump shaft 3 and the pump body 2, the disassembly and the assembly are convenient, the water pump shaft 3 can freely run without being blocked, and when the mechanical seal 8 is required to be replaced in later maintenance, the mechanical seal 8 is easy to disassemble and assemble because the deep groove ball bearing is not arranged in the pump body 2, and the maintenance is convenient; the lower part of the vertical double-suction pump is not provided with a bearing and a mechanical seal, so that the damage problem of the bearing and the mechanical seal at the lower part is solved.
The structure of the pump body 2 and the pump cover 5: as shown in fig. 1 and 3, the pump body 2 includes a housing 2a and a volute 2b disposed in the housing 2a, the pump cover 5 includes an upper cover 5a sealingly connected to the housing 2a, a lower cover 5b sealingly connected to the volute 2b, and a bearing mounting portion 5c disposed between the upper cover 5a and the lower cover 5b, the seal cover 7 is disposed on the upper cover 5a, the sliding bearing 6 is disposed between the bearing mounting portion 5c and the water pump shaft 3, and the sliding bearing 6 is disposed in the middle of the water pump shaft 3 to better support the water pump shaft 3.
Further, the housing 2a and the scroll casing 2b are of a unitary structure.
The bearing mounting portion 5c has a structure: as shown in fig. 1, the bearing mounting portion 5c is connected to the upper cover 5a via an upper connecting portion 5d on one side and to the lower cover 5b via a lower connecting portion 5e on the other side.
Further, the upper cover 5a, the lower cover 5b, the bearing mounting portion 5c, the upper connecting portion 5d, and the lower connecting portion 5e are integrally formed.
Limit structure of slide bearing 6: as shown in fig. 1 and 2, a first limiting boss 5f for limiting the sliding bearing 6 is arranged at the lower end of the bearing mounting portion 5c, and a cover plate 9 for limiting the sliding bearing 6 is arranged above the bearing mounting portion 5 c. Simple structure, easy to assemble.
Furthermore, the bearing mounting portion 5c is a hollow cylinder, the first limiting boss 5f and the bearing mounting portion 5c are integrally formed, and the cover plate 9 is connected above the bearing mounting portion 5c through screws.
Mounting structure of mechanical seal 8: as shown in fig. 1 and 2, the mechanical seal gland 7 is provided with a mounting groove 7a for mounting the mechanical seal 8, the upper end face of the mounting groove 7a carries out upper limit on the mechanical seal 8, and the water pump shaft 3 is provided with a limit boss two 3a for carrying out lower limit on the mechanical seal 8. Simple structure, easy to assemble.
Specific structure of the mechanical seal 8: as shown in fig. 1 and 2, the stationary ring of the mechanical seal 8 is disposed in the mounting groove 7a and abuts against the upper end surface of the mounting groove 7a to limit, and the movable ring of the mechanical seal 8 abuts against the second limiting boss 3a to limit.
In order to replace and maintain the mechanical seal 8 without disassembling the motor 1 and other parts, as shown in fig. 1 and 4, a motor coupler 10 is disposed at the lower end of the rotating shaft of the motor 1, a water pump coupler 11 is disposed at the upper end of the water pump shaft 3, and an intermediate coupler 12 is detachably connected between the motor coupler 10 and the water pump coupler 11.
The detachable connection structure of the motor coupling 10 and the intermediate coupling 12, and the intermediate coupling 12 and the water pump coupling 11: as shown in fig. 1 and 4, the lower end of the motor coupling 10 is provided with a first installation flange 10a, the upper end of the intermediate coupling 12 is provided with a second installation flange 12a, the lower end of the intermediate coupling is provided with a third installation flange 12b, the upper end of the water pump coupling 11 is provided with a fourth installation flange 11a, the first installation flange 10a is detachably connected with the second installation flange 12a through a fastener, and the fourth installation flange 11a is detachably connected with the third installation flange 12b through a fastener.
The structure of the fastener: the fastener is a screw, the screw passes through the second installation convex edge 12a and is in threaded connection with the first installation convex edge 10a, and the screw passes through the fourth installation convex edge 11a and is in threaded connection with the third installation convex edge 12 b.
Connection structure of motor coupling 10 and the pivot of motor 1: as shown in fig. 1 and 4, a first baffle 13 for limiting the motor coupler 10 is arranged below the rotating shaft of the motor 1, a screw passes through the first baffle 13 and is screwed with the rotating shaft of the motor 1, and a first set screw 14 passes through the motor coupler 10 and is tightly fixed on the rotating shaft of the motor 1.
The connection structure of the water pump shaft coupling 11 and the water pump shaft 3: as shown in fig. 1 and 4, a second baffle 15 for limiting the water pump shaft 11 is arranged above the water pump shaft 3, a screw penetrates through the second baffle 15 and is in threaded connection with the water pump shaft 3, a third limiting boss 3b for limiting the water pump shaft 11 is arranged on the water pump shaft 3, and a second fastening screw 16 penetrates through the water pump shaft 11 and is tightly fixed on the water pump shaft 3.
Preferably, the material of the water pump shaft 3 is stainless steel, cast iron or copper, and the material of the sliding bearing 6 is copper.
Still further, the stainless steel is duplex stainless steel, the cast iron is ductile iron, and the copper is bronze.
Mounting structure of motor 1: a water pump bracket 17 is arranged below the motor 1, and the pump body 2 is fixedly connected in the water pump bracket 17. The water pump bracket 17 comprises an upper bracket and a lower bracket, the pump body 2 is fixed on the lower bracket, the upper bracket is hoisted on the lower bracket, and finally the upper bracket is fixed on the lower bracket by bolts.
The installation steps of the utility model are as follows: firstly, a pump body 2 is fixed on a water pump bracket 17, a double-suction impeller 4 is assembled at the lower end of a water pump shaft 3 and is locked by a round nut, a mouth ring 18 is assembled on the double-suction impeller 4 and then is lifted into the pump body 2, a pump cover 5 is assembled with the pump body 2 after being provided with sealing round rubber, a sliding bearing 6 is assembled into a bearing mounting part 5c of the pump cover 5 by screwing a bolt, a cover plate 9 is covered above the bearing mounting part 5c, a mechanical seal 8 and a mechanical seal gland 7 are assembled, a water pump coupler 11 is assembled on the water pump shaft 3, an intermediate coupler 12 is assembled on the water pump coupler 11, a motor coupler 10 is assembled on a rotating shaft of the motor 1, and then the motor 1 is lifted onto the water pump bracket 17 and is connected with the intermediate coupler 12 and the motor coupler 10.
The above embodiment is only one of the preferred embodiments of the present utility model, and is not intended to limit the scope of the present utility model, therefore: all equivalent changes in shape, structure and principle of the utility model should be covered in the scope of protection of the utility model.
Claims (10)
1. The utility model provides a vertical double suction pump, includes motor (1), pump body (2) and water pump shaft (3), be equipped with double suction impeller (4) of suit on water pump shaft (3) in pump body (2), the pivot of motor (1) is connected in pump shaft (2) is stretched out to water pump shaft (3) upper end, its characterized in that: the double-suction impeller (4) is sleeved at the bottom of the water pump shaft (3), no bearing or mechanical seal is arranged between the bottom of the water pump shaft (3) and the pump body (2), a pump cover (5) is arranged on the cover above the pump body (2), a sliding bearing (6) sleeved on the water pump shaft (3) is arranged between the pump cover (5) and the water pump shaft (3), a mechanical seal gland (7) is arranged on the cover above the pump cover (5), and the mechanical seal gland (7) is in rotary seal with the water pump shaft (3) through a mechanical seal (8) sleeved on the water pump shaft (3).
2. The vertical double suction pump according to claim 1, wherein: the pump body (2) comprises a shell (2 a) and a volute (2 b) arranged in the shell (2 a), the pump cover (5) comprises an upper cover (5 a) in sealing connection with the shell (2 a), a lower cover (5 b) in sealing connection with the volute (2 b), and a bearing mounting part (5 c) arranged between the upper cover (5 a) and the lower cover (5 b), the machine sealing cover (7) is covered on the upper cover (5 a), and the sliding bearing (6) is arranged between the bearing mounting part (5 c) and the water pump shaft (3).
3. A vertical double suction pump according to claim 2, wherein: one side of the bearing mounting part (5 c) is connected with the upper cover (5 a) through an upper connecting part (5 d), and the other side is connected with the lower cover (5 b) through a lower connecting part (5 e).
4. A vertical double suction pump according to claim 2, wherein: the lower end of the bearing installation part (5 c) is provided with a first limiting boss (5 f) for limiting the sliding bearing (6) downwards, and a cover plate (9) for limiting the sliding bearing (6) upwards is covered above the bearing installation part (5 c).
5. The vertical double suction pump according to claim 1, wherein: the mechanical seal gland (7) is provided with a mounting groove (7 a) for mounting the mechanical seal (8), the upper end face of the mounting groove (7 a) is used for carrying out upper limit on the mechanical seal (8), and the water pump shaft (3) is provided with a second limit boss (3 a) for carrying out lower limit on the mechanical seal (8).
6. The vertical double suction pump according to claim 1, wherein: the motor is characterized in that a motor coupler (10) is arranged at the lower end of a rotating shaft of the motor (1), a water pump coupler (11) is arranged at the upper end of a water pump shaft (3), and an intermediate coupler (12) is detachably connected between the motor coupler (10) and the water pump coupler (11).
7. The vertical double suction pump according to claim 6, wherein: the motor coupling (10) lower extreme is equipped with the protruding edge one (10 a) of installation, and middle shaft coupling (12) upper end is equipped with the protruding edge two (12 a) of installation, the lower extreme is equipped with the protruding edge three (12 b) of installation, the water pump coupling (11) upper end is equipped with the protruding edge four (11 a) of installation, and the protruding edge one (10 a) of installation can dismantle with the protruding edge two (12 a) of installation through the fastener and be connected, and the protruding edge four (11 a) of installation can dismantle with the protruding edge three (12 b) of installation through the fastener.
8. The vertical double suction pump according to claim 7, wherein: a first baffle (13) for limiting the motor coupler (10) downwards is arranged below the rotating shaft of the motor (1), a screw penetrates through the first baffle (13) to be screwed with the rotating shaft of the motor (1), and a first fastening screw (14) penetrates through the motor coupler (10) to be tightly fixed on the rotating shaft of the motor (1); the water pump shaft (3) top is equipped with baffle two (15) that go on spacing to water pump shaft coupling (11), and the screw passes baffle two (15) and water pump shaft (3) spiro union, be equipped with on water pump shaft (3) and carry out spacing boss three (3 b) of spacing down to water pump shaft coupling (11), set screw two (16) pass water pump shaft coupling (11) and tightly fix on water pump shaft (3).
9. The vertical double suction pump according to claim 1, wherein: the water pump shaft (3) is made of stainless steel, cast iron or copper, and the sliding bearing (6) is made of copper.
10. The vertical double suction pump according to claim 1, wherein: a water pump bracket (17) is arranged below the motor (1), and the pump body (2) is fixedly connected in the water pump bracket (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322393205.8U CN220791510U (en) | 2023-09-04 | 2023-09-04 | Vertical double-suction pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322393205.8U CN220791510U (en) | 2023-09-04 | 2023-09-04 | Vertical double-suction pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220791510U true CN220791510U (en) | 2024-04-16 |
Family
ID=90637271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322393205.8U Active CN220791510U (en) | 2023-09-04 | 2023-09-04 | Vertical double-suction pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220791510U (en) |
-
2023
- 2023-09-04 CN CN202322393205.8U patent/CN220791510U/en active Active
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