CN112963360A - Shaft through-flow pump with stable shafting - Google Patents

Shaft through-flow pump with stable shafting Download PDF

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Publication number
CN112963360A
CN112963360A CN202110417788.6A CN202110417788A CN112963360A CN 112963360 A CN112963360 A CN 112963360A CN 202110417788 A CN202110417788 A CN 202110417788A CN 112963360 A CN112963360 A CN 112963360A
Authority
CN
China
Prior art keywords
shaft
pump
bearing
thrust
radial
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN202110417788.6A
Other languages
Chinese (zh)
Inventor
王腾伟
郭华毅
宋梦斌
朱泉荣
唐宇
曾慧兰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Leo Group Hunan Pump Co Ltd
Original Assignee
Leo Group Hunan Pump Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Leo Group Hunan Pump Co Ltd filed Critical Leo Group Hunan Pump Co Ltd
Priority to CN202110417788.6A priority Critical patent/CN112963360A/en
Publication of CN112963360A publication Critical patent/CN112963360A/en
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D5/00—Pumps with circumferential or transverse flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • 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
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/043—Shafts
    • 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
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/043—Shafts
    • F04D29/044—Arrangements for joining or assembling shafts
    • 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
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/046—Bearings
    • 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
    • F04D29/06—Lubrication
    • F04D29/061—Lubrication especially adapted for liquid pumps
    • 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
    • F04D29/106—Shaft sealings especially adapted for liquid pumps
    • 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
    • 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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/445—Fluid-guiding means, e.g. diffusers especially adapted for liquid pumps
    • F04D29/448—Fluid-guiding means, e.g. diffusers especially adapted for liquid pumps bladed diffusers
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The invention discloses a shaft through-flow pump with a stable shaft system, which comprises a motor, a gear box and a water pump, wherein the motor, the gear box and the water pump are arranged in a shaft, the motor is connected with the gear box through a high-speed end coupler, the output end of the gear box is connected with a pump shaft through a low-speed end coupler, a radial bearing component for supporting the pump shaft to bear radial force is arranged in the shaft, and a thrust radial bearing component for bearing axial thrust and radial thrust is arranged at the tail end of the pump shaft in a guide vane body of the water pump. The thrust radial bearing component is arranged in the pump body component, the radial bearing component is arranged in the vertical shaft, the bearing span can be greatly shortened, the whole shafting is more stable and reliable in operation, the length of the vertical shaft is shortened, the efficiency and the economy of the water pump are improved, the thrust radial bearing component is self-cooled by adopting a medium, the structure is more compact, and an auxiliary cooling system is not required to be configured.

Description

Shaft through-flow pump with stable shafting
Technical Field
The invention relates to a vertical shaft tubular pump, in particular to a vertical shaft tubular pump with a stable shafting.
Background
The vertical shaft tubular pump has the characteristics of low lift and large flow, is mainly applied to large water conservancy projects with low lift, such as large projects for flood control and drainage, urban water diversion and water transfer, south-to-north water transfer and the like, is closely related to the countryside nationality, and is of great importance in safe and stable operation. The well-known shaft tubular pump is arranged in a front-mounted manner, is driven by a high-speed motor, is subjected to speed reduction transmission by a gear box, is horizontally arranged along the axis of the unit, is a simply-supported beam stress model in the shafting structure of the unit, is provided with a guide bearing for bearing radial force in a guide vane body, and is provided with a thrust radial combined bearing which mainly bears the axial thrust and the radial force of the operation of a water pump.
According to the feedback of the actual operation condition of the pump station, the known shaft tubular pump has the following problems:
1. the whole shafting system is always in a pressed state in the running process, and the self gravity of the rotor is added, so that the shafting deflection is large, and the rotor has the problem of eccentric operation;
2. at present, the pump type adopts a shafting structure of a simply supported beam, a thrust radial bearing at one end is arranged in a vertical shaft, and a radial bearing at one end is arranged in a guide vane body, so that the structure further ensures that the whole shafting has long span and large bending moment;
3. the thrust radial bearing arranged in the vertical shaft mainly adopts a rolling bearing, and the problem of unstable unit operation caused by large axial movement exists in the unit operation process;
4. the accessory equipment of the bearing system is complex, and the operation faults are more: the thrust radial bearing part in the shaft needs to be provided with an external cooling circulation system, so that the maintenance operation is complex, the faults are more, and the problems of water leakage in the shaft and the like exist.
Disclosure of Invention
In view of the problems in the prior art, the invention provides a shaft tubular pump with a stable shaft system.
The technical scheme adopted by the invention is as follows: the utility model provides a stable shaft through-flow pump of shafting, is including arranging motor, the gear box in the shaft and arranging the water pump in the pump well, the motor passes through high-speed end coupling joint the gear box, the gear box output passes through low-speed end coupling joint pump shaft, is provided with the journal bearing part that is used for supporting the pump shaft and bears the radial force in the shaft, and the end of the pump shaft in the water pump stator vane body is provided with the thrust journal bearing part that bears axial thrust and journal thrust.
Furthermore, the thrust radial bearing component comprises a bearing body, the tail end of the bearing body is in sealing connection with the sealing end cover, a bidirectional thrust bearing and a radial bearing are sequentially arranged in the bearing body from the tail end to the front, and the front end of the bearing body is connected with a sealing assembly in sealing fit with the pump shaft.
Furthermore, the bidirectional thrust bearing comprises a forward thrust bearing and a reverse thrust bearing, and a thrust head matched with the pump shaft is arranged between the forward thrust bearing and the reverse thrust bearing.
Furthermore, the sealing assembly comprises an outer sealing body and an inner sealing body, the outer sealing body is arranged outside the inner sealing body, a water collecting cavity is formed between the outer sealing body and the inner sealing body, a water sealing oil seal with an outward opening is arranged on the matching surface of the outer sealing body and the pump shaft, an oil sealing oil seal with an inward opening is arranged on the matching surface of the inner sealing body and the pump shaft, and a water retaining ring is arranged on the pump shaft located in the water collecting cavity.
Furthermore, the bearing body is connected with an external oil tank through an oil conveying pipe to provide thin oil lubrication for the bearing in the bearing body.
The invention has the beneficial effects that:
(1) the thrust radial bearing component is arranged in the pump body component, so that the whole shafting is more stable and reliable in operation, and the thrust radial bearing component adopts medium self-cooling, so that the structure is more compact, and an auxiliary cooling system is not required to be configured;
(2) the radial bearing part is arranged in the vertical shaft, so that the bearing span can be greatly shortened, the shafting stability is improved, the length of the vertical shaft is shortened, and the efficiency and the economy of the water pump are improved;
(3) the thrust radial bearing part adopts a structure capable of bearing bidirectional thrust and can bear reverse thrust.
In conclusion, the vertical shaft tubular pump with the stable shaft system has the advantages of advanced technology, stable operation, high efficiency and strong practical and popularization values.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic view of the structure of the bearing member of the present invention.
FIG. 3 is a schematic view of the construction of the thrust radial bearing assembly of the present invention.
Detailed Description
In order to facilitate an understanding of the invention, the invention will be described more fully and in detail below with reference to the accompanying drawings and preferred embodiments, but the scope of the invention is not limited to the specific embodiments below.
As shown in fig. 1-3, the shaft tubular pump with a stable shaft system of this embodiment includes a motor 1, a gear box 2 and a water pump 5, the motor 1, the gear box 2 and the water pump 5 are arranged in a pump well, the motor 1 is connected to the gear box 2 through a high-speed end coupling, the output end of the gear box 2 is connected to a pump shaft 4 through a low-speed end coupling, and the shaft tubular pump is characterized in that: a radial bearing 604 component 3 for supporting the pump shaft 4 to bear radial force is arranged in the vertical shaft, and a thrust radial bearing 604 component 6 for bearing axial thrust and radial thrust is arranged at the tail end of the pump shaft 4 in the guide vane body of the water pump 5.
The thrust radial bearing 604 component 6 comprises a bearing body 603, the tail end of the bearing body 603 is hermetically connected with the sealing end cover 601, a bidirectional thrust bearing 602 and a radial bearing 604 are sequentially arranged in the bearing body 603 from the tail end to the front, and the front end of the bearing body 603 is connected with a sealing assembly 7 hermetically matched with the pump shaft 4.
The bidirectional thrust bearing 602 comprises a forward thrust bearing 605 and a reverse thrust bearing 607, and a thrust collar 606 engaged with the pump shaft 4 is arranged between the forward thrust bearing 605 and the reverse thrust bearing 607.
The sealing assembly 7 comprises an outer sealing body 701 and an inner sealing body 702, the outer sealing body 701 is arranged outside the inner sealing body 702, a water collecting cavity is formed between the outer sealing body 701 and the inner sealing body 702, a water sealing oil seal with an outward opening is arranged on the matching surface of the outer sealing body 701 and the pump shaft 4, an oil sealing oil seal with an inward opening is arranged on the matching surface of the inner sealing body 702 and the pump shaft 4, and a water retaining ring is arranged on the pump shaft 4 located in the water collecting cavity.
The bearing body 603 is connected with an external oil tank through an oil delivery pipe to provide thin oil lubrication for a bearing in the bearing body 603.
According to the vertical shaft tubular pump with the stable shafting, the pump shaft system is of a simply supported beam structure, and the inlet end of the water pump is provided with the radial bearing component for supporting the radial force of the whole shafting and is arranged in the vertical shaft; the outlet end is provided with a thrust radial bearing component which bears the axial thrust and the radial force of the water pump and is arranged in the guide vane body of the pump body component. The water pump unit is at the operation in-process, through high-speed motor drive + gear box reduction gearing, makes the blade do work to the medium with water pump shaft rotation, and the axial thrust of unit is to the entrance point like this, and the tensile stress that the pump shaft bore always like this compares in the structure of current thrust bearing part arrangement at the entrance point, and the shafting stability of whole unit will improve greatly, and the guarantee unit operation is safe and stable reliable.
Many modifications and other embodiments of the invention will come to mind to one skilled in the art to which this invention pertains having the benefit of the teachings presented in the foregoing descriptions and the associated drawings. Therefore, it is to be understood that the inventions are not to be limited to the specific embodiments disclosed and that modifications and other embodiments are intended to be included within the scope of the appended claims. Although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.

Claims (5)

1. The utility model provides a shaft through-flow pump that shafting is stable, is including arranging motor (1), gear box (2) in the shaft and arranging water pump (5) in the pump well, motor (1) is through high speed end coupling joint gear box (2), gear box (2) output is through low speed end coupling joint pump shaft (4), its characterized in that: a radial bearing (604) component (3) for supporting the pump shaft (4) to bear radial force is arranged in the vertical shaft, and a thrust radial bearing (604) component (6) for bearing axial thrust and radial thrust is arranged at the tail end of the pump shaft (4) in the guide vane body of the water pump (5).
2. A shafted stabilized shaft tubular pump as in claim 1, wherein: the thrust radial bearing (604) component (6) comprises a bearing body (603), the tail end of the bearing body (603) is in sealing connection with the sealing end cover (601), a bidirectional thrust bearing (602) and a radial bearing (604) are sequentially arranged in the bearing body (603) from the tail end to the front, and the front end of the bearing body (603) is connected with a sealing assembly (7) in sealing fit with the pump shaft (4).
3. A shafted stabilized shaft tubular pump as in claim 2, wherein: the bidirectional thrust bearing (602) comprises a forward thrust bearing (605) and a reverse thrust bearing (607), and a thrust head (606) matched with the pump shaft (4) is arranged between the forward thrust bearing (605) and the reverse thrust bearing (607).
4. A shafted stabilized shaft tubular pump as in claim 2, wherein: the sealing assembly (7) comprises an outer sealing body (701) and an inner sealing body (702), the outer sealing body (701) is arranged outside the inner sealing body (702), a water collecting cavity is formed between the outer sealing body (701) and the inner sealing body (702), a water sealing oil seal with an outward opening is arranged on the matching surface of the outer sealing body (701) and the pump shaft (4), an oil sealing oil seal with an inward opening is arranged on the matching surface of the inner sealing body (702) and the pump shaft (4), and a water retaining ring is arranged on the pump shaft (4) located in the water collecting cavity.
5. A shafted stabilized shaft tubular pump as in claim 2, wherein: the bearing body (603) is connected with an external oil tank through an oil conveying pipe to provide thin oil lubrication for a bearing in the bearing body (603).
CN202110417788.6A 2021-04-19 2021-04-19 Shaft through-flow pump with stable shafting Withdrawn CN112963360A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110417788.6A CN112963360A (en) 2021-04-19 2021-04-19 Shaft through-flow pump with stable shafting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110417788.6A CN112963360A (en) 2021-04-19 2021-04-19 Shaft through-flow pump with stable shafting

Publications (1)

Publication Number Publication Date
CN112963360A true CN112963360A (en) 2021-06-15

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ID=76280871

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110417788.6A Withdrawn CN112963360A (en) 2021-04-19 2021-04-19 Shaft through-flow pump with stable shafting

Country Status (1)

Country Link
CN (1) CN112963360A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11988212B2 (en) 2021-08-02 2024-05-21 Techtronic Cordless Gp Fluid transfer pump

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11988212B2 (en) 2021-08-02 2024-05-21 Techtronic Cordless Gp Fluid transfer pump

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Application publication date: 20210615