CN220622192U - Multistage pump based on axial displacement measurement - Google Patents
Multistage pump based on axial displacement measurement Download PDFInfo
- Publication number
- CN220622192U CN220622192U CN202322353811.7U CN202322353811U CN220622192U CN 220622192 U CN220622192 U CN 220622192U CN 202322353811 U CN202322353811 U CN 202322353811U CN 220622192 U CN220622192 U CN 220622192U
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- CN
- China
- Prior art keywords
- pump
- pump shaft
- balance
- axial displacement
- displacement
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 37
- 238000005259 measurement Methods 0.000 title claims abstract description 10
- 210000004907 gland Anatomy 0.000 claims abstract description 14
- 230000005540 biological transmission Effects 0.000 claims abstract description 7
- 230000001681 protective effect Effects 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000005299 abrasion Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 239000000945 filler Substances 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to a multistage pump based on axial displacement measurement, which comprises a pump body, a pump shaft rotatably installed in the pump body and an impeller installed on the pump shaft, wherein a balance disc and a balance ring which form a balance mechanism are installed on the pump shaft extending out of the rear end of the pump body, a bearing seat is fixed on the rear end surface of the pump body, a bearing for supporting the non-transmission side of the pump shaft is installed in the bearing seat, a gland is fixed on the outer side surface of the bearing seat, a displacement switch seat is connected with the center of the gland through threads, and a displacement sensor for measuring the axial displacement of the pump shaft is installed in the displacement switch seat. According to the utility model, the displacement sensor is arranged beside the end face of the non-transmission side of the pump shaft, so that the left moving distance of the pump shaft after the balance mechanism is worn is effectively measured, the wear condition between the balance disc and the balance ring is judged according to the distance, and whether the balance mechanism needs to be replaced and maintained is determined, so that the normal operation of the multistage pump is ensured.
Description
Technical Field
The utility model relates to the technical field of water pumps, in particular to a multistage pump based on axial displacement measurement.
Background
In the multistage pump structure, in order to ensure stable operation of the impeller, a balance mechanism consisting of a balance disc and a balance ring is arranged at the water outlet section, and when the multistage pump is in a normal operation state, friction can not occur between the balance disc and the balance ring due to water pressure balance, and when the multistage pump is started or stopped each time, mutual friction can occur between the balance disc and the balance ring to cause abrasion.
It is therefore necessary to know the wear condition of the balancing mechanism and determine when to perform replacement service. The existing mode is that scale marks are arranged on a pump shaft, and the left moving distance of the pump shaft after abrasion of a balance mechanism is observed, but the scale marks can not be clearly observed sometimes due to the influence of the use environment of a multistage pump, so that judgment of the abrasion degree is affected.
Disclosure of Invention
The utility model aims to solve the technical problems that: in order to overcome the defects in the prior art, the utility model provides a multistage pump based on axial displacement measurement, which solves the technical problem that the abrasion condition of a balancing mechanism cannot be accurately judged in the existing multistage pump.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides a multistage pump based on axial displacement measurement, includes the pump body, rotates the pump shaft of installing in the pump body and install at epaxial impeller of pump, stretches out and installs balance plate and the balance ring that constitutes balance mechanism on the pump shaft of pump body rear end, the pump body rear end face be fixed with the bearing frame, install the bearing that supports the pump shaft non-transmission side in the bearing frame, be fixed with the gland on the bearing frame lateral surface, gland central point put threaded connection have displacement switch seat, displacement switch seat in install the displacement sensor who measures pump shaft axial displacement.
Further, a protective cover is fixed on the outer side face of the gland, a central hole is formed in the center of the protective cover, and the reading end of the displacement sensor is supported in the central hole in a matched mode and extends out of the protective cover.
Preferably, the measuring end of the displacement sensor is close to the end face of the rear end of the pump shaft extending out of the bearing.
The beneficial effects of the utility model are as follows: according to the utility model, the displacement sensor is arranged beside the end face of the non-transmission side of the pump shaft, so that the left moving distance of the pump shaft after the balance mechanism is worn is effectively measured, the wear condition between the balance disc and the balance ring is judged according to the distance, and whether the balance mechanism needs to be replaced and maintained is determined, so that the normal operation of the multistage pump is ensured.
Drawings
The utility model will be further described with reference to the drawings and embodiments.
Fig. 1 is a schematic structural view of the present utility model.
In the figure: 1. the pump comprises a pump body, a pump shaft, a vane wheel, a balancing disk, a balancing ring, a bearing seat, a bearing, a gland, a displacement switch seat, a displacement sensor, a protective cover, a sealing body, a shaft sleeve, a packing gland and a dust cover.
Detailed Description
The utility model will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the utility model and therefore show only the structures which are relevant to the utility model.
The multistage pump based on axial displacement measurement shown in fig. 1 comprises a pump body 1, a pump shaft 2 rotatably installed in the pump body 1 and an impeller 3 installed on the pump shaft 2, wherein a water inlet section of the multistage pump is positioned at the left end of the pump body 1, a water outlet section of the multistage pump is positioned at the right end of the pump body, and a balance disc 4 and a balance ring 5 which form a balance mechanism of the multistage pump are installed on the pump shaft 2 extending out of the water outlet section of the pump body 1.
The pump is characterized in that a bearing seat 6 is fixed on the right end face of the pump body 1, a sealing body 12 is arranged between the bearing seat 6 and the right end face of the pump body 1, a shaft sleeve 13 is arranged on the pump shaft 2 at the position opposite to the sealing body 12, a filler 14 is arranged between the shaft sleeve 13 and an inner cavity of the sealing body 12, a filler gland 15 for clamping the filler 14 is arranged on the shaft sleeve 13, a bearing 7 for supporting the non-transmission side of the pump shaft 2 is fixed in a mounting hole of the bearing seat 6, a gland 8 is fixed on the outer side face of the bearing seat 6, a dust cover 16 is fixed on the inner side face of the bearing seat 6, and a fastening nut for pressing the bearing 7 is connected with the right end of the pump shaft 2.
The center of the gland 8 is in threaded connection with a displacement switch seat 9, a displacement sensor 10 for measuring the axial displacement of the pump shaft 2 is arranged in the displacement switch seat 9, and the measuring end of the displacement sensor 10 is close to the end face of the rear end of the pump shaft 2 extending out of the bearing 7.
A protective cover 11 is fixed on the outer side surface of the gland 8, a central hole is formed in the center of the protective cover 11, and the reading end of the displacement sensor 10 is supported in the central hole in a matched mode and extends out of the protective cover 11.
According to the utility model, the displacement sensor 10 is arranged beside the end face of the non-transmission side of the pump shaft 2, the left moving distance of the pump shaft 2 after the balance mechanism is worn is measured, the wear condition between the balance disc 4 and the balance ring 5 is judged according to the distance, and whether the balance disc 4 or the balance ring 5 needs to be replaced or not is determined, so that the normal operation of the multistage pump is ensured.
With the above-described preferred embodiments according to the present utility model as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present utility model. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of claims.
Claims (3)
1. The utility model provides a multistage pump based on axial displacement measurement, includes pump body (1), rotates pump shaft (2) of installing in pump body (1) and install impeller (3) on pump shaft (2), installs balance plate (4) and balance ring (5) that constitute balance mechanism on pump shaft (2) of stretching out pump body (1) rear end, characterized by: the pump body (1) rear end face be fixed with bearing frame (6), install in bearing frame (6) and support pump shaft (2) non-transmission side bearing (7), be fixed with gland (8) on bearing frame (6) lateral surface, gland (8) central point put threaded connection have displacement switch seat (9), displacement switch seat (9) in install displacement sensor (10) of measuring pump shaft (2) axial displacement.
2. The axial displacement measurement based multistage pump of claim 1, wherein: the outer side surface of the gland (8) is fixedly provided with a protective cover (11), the center of the protective cover (11) is provided with a center hole, and the reading end of the displacement sensor (10) is supported in the center hole in a matched mode and extends out of the protective cover (11).
3. The axial displacement measurement based multistage pump of claim 2, wherein: the measuring end of the displacement sensor (10) is close to the end face of the rear end of the pump shaft (2) extending out of the bearing (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322353811.7U CN220622192U (en) | 2023-08-31 | 2023-08-31 | Multistage pump based on axial displacement measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322353811.7U CN220622192U (en) | 2023-08-31 | 2023-08-31 | Multistage pump based on axial displacement measurement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220622192U true CN220622192U (en) | 2024-03-19 |
Family
ID=90211373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322353811.7U Active CN220622192U (en) | 2023-08-31 | 2023-08-31 | Multistage pump based on axial displacement measurement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220622192U (en) |
-
2023
- 2023-08-31 CN CN202322353811.7U patent/CN220622192U/en active Active
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| GR01 | Patent grant |