CN214577737U - Novel sectional assembly type shaft tubular pump device - Google Patents

Novel sectional assembly type shaft tubular pump device Download PDF

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Publication number
CN214577737U
CN214577737U CN202120082850.6U CN202120082850U CN214577737U CN 214577737 U CN214577737 U CN 214577737U CN 202120082850 U CN202120082850 U CN 202120082850U CN 214577737 U CN214577737 U CN 214577737U
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China
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shaft
impeller
section shell
ring
transmission shaft
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CN202120082850.6U
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Chinese (zh)
Inventor
陈松山
焦海峰
孙羽中
秦钟建
朱亚东
周正富
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Yangzhou University
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Yangzhou University
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Abstract

A novel sectional assembly type shaft tubular pump device belongs to the technical field of hydraulic engineering equipment and is formed by connecting a water guide cone, a shaft sleeve, an impeller, a hub, a shaft section shell, a front guide section shell and an impeller section shell which are arranged on a transmission shaft, wherein the shaft section shell, the front guide section shell and the impeller section shell are arranged outside the transmission shaft, a sectional assembly type structure is adopted, the stuffing box sealing of the traditional shaft tubular pump can be changed into mechanical sealing, the mechanical sealing structure is arranged in the shaft, the volume of the shaft is reduced, the sealing performance and the overall stability of the device are improved, the transmission shaft can realize axial movement through a left adjusting nut and a right adjusting nut, the central position of the impeller is convenient to position, the shell of the pump device can be installed in sections, the later-stage operation maintenance is convenient, the mechanical sealing structure combining a moving ring and a static ring is used between the shaft section and the impeller section to reduce leakage, and the defects of large sealing friction resistance and poor sealing effect of the traditional stuffing box are overcome, effectively improved the leakproofness and the stability of water pump unit.

Description

Novel sectional assembly type shaft tubular pump device
Technical Field
The utility model belongs to the technical field of hydraulic engineering equipment, a tubular pump device is related to, especially relate to a novel sectional type assembled shaft tubular pump device.
Background
The vertical shaft tubular pump is a novel water pump type, has the characteristics of simple and straight flow channel, good flow state of water flow in the pump, good hydraulic performance and the like, and is widely applied to large-flow and low-lift pump stations in China in recent years. The shaft tubular pump structure is mainly characterized in that a shaft is arranged in the middle of a water inlet channel or a water outlet channel and used for arranging a motor, and the motor drives an impeller to rotate through a pump shaft to do work. At present, a sectional type tubular pump is a development trend of hydraulic engineering equipment, and the sectional type tubular pump has the characteristics of convenience in installation, simplicity in disassembly and the like, and is beneficial to replacement of parts of the tubular pump in the later period. However, the sectional type tubular pump has some problems in the use process, for example, the sealing type of the sectional type tubular pump still adopts the sealing of a stuffing box, and the distance between the stuffing box and a thrust bearing is short, so the sectional type tubular pump has larger volume, is difficult to arrange in a vertical shaft, has poorer sealing effect, has large friction resistance, is easy to damage the bearing and a motor, and is easy to leak; in addition, when the impeller is installed, the central position of the impeller relative to the pump shell cannot be adjusted, the service life of the impeller is influenced in the working process, and meanwhile, the stability of the tubular pump device is also influenced. In order to improve the installation convenience and the operation stability of the water pump unit, a sectional type tubular pump device with a novel structure is needed to be designed.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the purpose is that the sealing method to present shaft tubular pump mainstream is that the packing box is sealed, packing box and thrust bearing distance are nearer, it is great to occupy the volume, it is relatively poor to seal the effect, leak easily and damage not enough such as bearing and motor, a novel sectional assembly formula shaft tubular pump device is proposed, but through sectional type pump device structure, but the pump shaft axial is adjusted, it is convenient that the installation is torn open and is traded, place in the axle sleeve alone in the sound ring, it is sealed effectual, can effectively reduce the volume of shaft, can improve water pump unit's installation convenience and operating stability.
The technical scheme of the utility model is that: a novel sectional assembly type shaft tubular pump device comprises a transmission shaft and a water guide cone; the method is characterized in that: the shaft is provided with a shaft, a shaft sleeve, an impeller and a hub in turn from left to right on the transmission shaft, the right end face of the shaft is connected with a compression ring in an axial positioning manner, a thrust head and a mechanical sealing structure are arranged between the inner surface of the shaft and the outer surface of the transmission shaft, a thrust bearing is arranged between the outer surface of the thrust head and the inner surface of the shaft, the left end face of the thrust head is fixed in an axial positioning manner through a left adjusting nut, the right end face of the thrust head is fixed in an axial positioning manner through a right adjusting nut, the inner ring of the thrust bearing is fixed in an axial positioning manner through the thrust head, the outer ring of the thrust bearing is fixed in an axial positioning manner through a bearing end cover arranged on the left end face of the shaft in a connecting manner, the left end face of the impeller is fixed in an axial positioning manner with the shaft sleeve, the right end face of the impeller is fixed in an axial direction through a locking nut arranged on the transmission shaft, and the hub is connected to the transmission shaft through a retaining ring and a radial bearing support, the guiding water cone is connected and fixed the front end of wheel hub, turn right from a left side in the outside of transmission shaft and be equipped with shaft section shell, preceding guide section shell, impeller section shell and stator section in proper order outside, the stator is connected and is fixed between stator section shell and the wheel hub, pass through bolt-up connection between shaft section shell, preceding guide section shell, impeller section shell and the stator section shell.
The mechanical sealing structure is formed by connecting a movable ring, a static ring, a corrugated pipe and a spring, the spring is arranged between the movable ring and the pressure ring, the movable ring is in contact connection with the static ring under the action of the spring, the corrugated pipe is sleeved outside the spring, and the corrugated pipe is arranged between the movable ring and the pressure ring in the axial direction.
The inner surface of the hub is provided with internal threads, one end of the water guide cone is provided with external threads, and the water guide cone and the hub are fixedly connected in a threaded manner.
And the left adjusting nut, the right adjusting nut and the locking nut are opposite-jacking double nuts.
The spring is a compression spring.
The impeller is sleeved on the transmission shaft, the impeller and the transmission shaft form circumferential fixation through keys, and the blades are fixed on an impeller hub through bolt connection.
The outer ring of the radial bearing is provided with an external sliding groove, the inner ring of the radial bearing is provided with an internal sliding groove, the external sliding groove is connected with the inner surface of the hub in a sliding mode, and the internal sliding groove is connected with the transmission shaft in a sliding mode through a key groove.
The utility model has the advantages that: the utility model provides a novel sectional assembled shaft tubular pump device, which is formed by connecting a water guide cone, a shaft sleeve, an impeller, a hub, a shaft section shell, a front guide section shell and a guide vane section shell which are arranged on a transmission shaft, wherein the shaft section shell, the front guide section shell and the impeller section shell are arranged outside the transmission shaft, the sectional assembled structure is adopted, the stuffing box seal of the traditional shaft tubular pump can be changed into mechanical seal, the mechanical seal structure is arranged in the shaft, the volume of the shaft is reduced, the sealing performance and the overall stability of the device are improved, the transmission shaft can realize axial movement through a left adjusting nut and a right adjusting nut, the central position of the impeller is convenient to be positioned, the shaft section shell, the front guide section shell, the impeller section shell and the guide vane section shell of the pump device can be installed in sections, the later-stage operation maintenance is convenient, and the leakage is reduced by using the mechanical seal structure combining a movable ring and a static ring between the shaft section and the impeller section, the tightness of mechanical seal can be adjusted to the clamping ring, has compensatied the big and poor shortcoming of sealed effect of traditional packing box sealing frictional resistance, has effectively improved water pump unit's leakproofness and stability.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic view of the mechanical sealing structure of the present invention.
Fig. 3 is a schematic view of the structure of the radial bearing of the present invention.
In the figure: the guide vane type centrifugal compressor comprises a water guide cone 1, a radial bearing 2, an outer ring 2-1, an inner ring 2-2, an outer sliding groove 2-3, an inner sliding groove 2-4, a guide vane section shell 3, a locking nut 4, an impeller 5, an impeller section shell 6, a front guide section shell 7, a shaft sleeve 8, a vertical shaft section shell 10, a right adjusting nut 11, a thrust bearing 12, a left adjusting nut 13, a thrust head 14, a bearing end cover 15, a vertical shaft 16, a static ring 17, a pressure ring 18, a key 19, a transmission shaft 20, a retainer ring 21, a guide vane 22, a hub 23, a corrugated pipe 24 and a spring 25.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings:
as shown in fig. 1-3, a novel sectional assembly type shaft tubular pump device comprises a transmission shaft 20 and a water guide cone 1; a vertical shaft 16, a shaft sleeve 8, an impeller 5 and a hub 23 are sequentially arranged on a transmission shaft 20 from left to right, the right end face of the vertical shaft 16 is axially positioned and connected with a pressing ring 18, a thrust head 14 and a mechanical sealing structure are arranged between the inner surface of the vertical shaft 16 and the outer surface of the transmission shaft 20, a thrust bearing 12 is arranged between the outer surface of the thrust head 14 and the inner surface of the vertical shaft 16, the left end face of the thrust head 14 is axially positioned and fixed through a left adjusting nut 13, the right end face of the thrust head 14 is axially positioned and fixed through a right adjusting nut 11, the inner ring of the thrust bearing 12 is axially positioned and fixed through the thrust head 14, the outer ring of the thrust bearing 12 is axially positioned and fixed through a bearing end cover 15 connected and arranged on the left end face of the vertical shaft 16, the left end face of the impeller 5 is axially positioned and fixed with the shaft sleeve 8, and the right end face of the impeller 5 is axially fixed through a locking nut 4 on the transmission shaft 20, the hub 23 is supported and connected on the transmission shaft 20 through the retainer ring 21 and the radial bearing 2, the water guide cone 1 is connected and fixed at the front end of the hub 23, the vertical shaft section shell 10, the front guide section shell 7, the impeller section shell 6 and the guide vane section shell 3 are sequentially arranged from left to right outside the transmission shaft 20, the guide vane 22 is connected and fixed between the guide vane section shell 3 and the hub 23, and the vertical shaft section shell 10, the front guide section shell 7, the impeller section shell 6 and the guide vane section shell 3 are fixedly connected through bolts.
As shown in fig. 1-3, a novel sectional assembly type shaft tubular pump device, a mechanical seal structure is formed by connecting a movable ring 9, a stationary ring 17, a corrugated pipe 24 and a spring 25, the spring 25 is arranged between the movable ring 9 and a pressing ring 18, the movable ring 9 is in contact connection with the stationary ring 17 under the action of the spring, the corrugated pipe 24 is sleeved outside the spring 25, and the corrugated pipe 24 is axially arranged between the movable ring 9 and the pressing ring 18; an internal thread is arranged on the inner surface of the hub 23, an external thread is arranged at one end of the water guide cone 1, and the water guide cone 1 and the hub 23 are fixedly connected in a threaded manner; the left adjusting nut 13, the right adjusting nut 11 and the locking nut 4 are opposite-vertex type double nuts; the spring 25 is a compression spring; the impeller 5 is sleeved on the transmission shaft 20, the impeller 5 and the transmission shaft 20 form circumferential fixation through keys, and the blades are fixed on an impeller hub through bolt connection. An outer chute 2-3 is arranged on an outer ring 2-1 of the radial bearing 2, an inner chute 2-4 is arranged on an inner ring 2-2 of the radial bearing 2, the outer chute 2-3 is in sliding connection with the inner surface of the hub 23, and the inner chute 2-4 is in sliding connection with the transmission shaft 20 through a key groove.
As shown in fig. 1-3, the working principle of the novel sectional assembly type shaft tubular pump device is as follows: the mechanical sealing structure is characterized in that a thrust head, a thrust bearing, an adjusting nut and a bearing gland are installed firstly, a transmission shaft is supported, then a mechanical sealing structure, a pressing ring, a shaft sleeve, an impeller and a guide vane are installed on the transmission shaft from left to right in sequence, the position of the impeller is adjusted through the adjusting nuts on the two sides of the thrust head, finally a water guide cone is installed after the impeller is adjusted, and the impeller is connected with the middle of a pump shaft through a metal key. The guide vane outlet water guide cone is installed on the guide vane wheel hub through threads, and a rubber pad is arranged between the water guide cone and the guide vane wheel hub for sealing and leakage prevention. The impeller is supported on the inlet and outlet guide impeller hubs through rolling bearings on two sides, the external motor drives the transmission shaft and the impeller to rotate, and a thrust bearing is arranged between the pipeline wall and the rotor to balance the axial force generated when the impeller rotates. The transmission shaft can axially move through the adjusting nut, so that the center position of the impeller is conveniently positioned. The vertical shaft section, the front guide section, the impeller section and the guide vane section of the pump device can be installed in a segmented mode, and later-stage operation and maintenance are facilitated. The mechanical sealing mode that has used the quiet ring of moving to combine to reduce between shaft section and the impeller section and has leaked, and mechanical seal's elasticity can be adjusted to the clamping ring, has compensatied the big and poor shortcoming of sealed effect of traditional packing box sealing frictional resistance, effectively improves water pump unit's leakproofness and stability.

Claims (7)

1. A novel sectional assembly type shaft tubular pump device comprises a transmission shaft (20) and a water guide cone (1); the method is characterized in that: shaft (16), axle sleeve (8), impeller (5) and wheel hub (23) are equipped with in proper order from a left side to right on transmission shaft (20), the right-hand member face and clamping ring (18) axial positioning of shaft (16) are connected, be equipped with thrust block (14) and mechanical seal structure between the internal surface of shaft (16) and the surface of transmission shaft (20), be equipped with thrust bearing (12) between the surface of thrust block (14) and the internal surface of shaft (16), the left end face of thrust block (14) carries out axial positioning fixedly through left adjusting nut (13), the right-hand member face of thrust block (14) carries out axial positioning through right adjusting nut (11) and fixes, and the inner circle of thrust bearing (12) carries out axial positioning fixedly through thrust block (14), and the outer lane of thrust bearing (12) carries out axial positioning fixedly through connecting bearing end cover (15) that sets up on shaft (16) left end face, the left end surface of the impeller (5) is axially positioned and fixed with the shaft sleeve (8), the right end surface of the impeller (5) is axially fixed through a locking nut (4) on the transmission shaft (20), the hub (23) is supported and connected on the transmission shaft (20) through a retaining ring (21) and a radial bearing (2), the water guide cone (1) is fixedly connected with the front end of the hub (23), a vertical shaft section shell (10), a front guide section shell (7), an impeller section shell (6) and a guide vane section shell (3) are sequentially arranged outside the transmission shaft (20) from left to right, the guide vane (22) is fixedly connected between the guide vane section outer shell (3) and the hub (23), the vertical shaft section shell (10), the front guide section shell (7), the impeller section shell (6) and the guide vane section shell (3) are fixedly connected through bolts.
2. The novel sectional assembling type shaft tubular pump device as claimed in claim 1, wherein: the mechanical sealing structure is formed by connecting a movable ring (9), a fixed ring (17), a corrugated pipe (24) and a spring (25), the spring (25) is arranged between the movable ring (9) and a pressing ring (18), the movable ring (9) is in contact connection with the fixed ring (17) under the action of the spring, the corrugated pipe (24) is sleeved outside the spring (25), and the corrugated pipe (24) is axially arranged between the movable ring (9) and the pressing ring (18).
3. The novel sectional assembling type shaft tubular pump device as claimed in claim 1, wherein: the inner surface of the hub (23) is provided with an internal thread, one end of the water guide cone (1) is provided with an external thread, and the water guide cone (1) and the hub (23) are fixedly connected in a threaded manner.
4. The novel sectional assembling type shaft tubular pump device as claimed in claim 1, wherein: the left adjusting nut (13), the right adjusting nut (11) and the locking nut (4) are opposite-top double nuts.
5. The novel sectional assembling type shaft tubular pump device as claimed in claim 2, wherein: the spring (25) is a compression spring.
6. The novel sectional assembling type shaft tubular pump device as claimed in claim 1, wherein: the impeller (5) is sleeved on the transmission shaft (20), the impeller (5) and the transmission shaft (20) form circumferential fixation through keys, and the blades are fixed on an impeller hub through bolt connection.
7. The novel sectional assembling type shaft tubular pump device as claimed in claim 1, wherein: the outer ring (2-1) of the radial bearing (2) is provided with an external sliding groove (2-3), the inner ring (2-2) of the radial bearing (2) is provided with an internal sliding groove (2-4), the external sliding groove (2-3) is in sliding connection with the inner surface of the hub (23), and the internal sliding groove (2-4) is in sliding connection with the transmission shaft (20) through a key groove.
CN202120082850.6U 2021-01-12 2021-01-12 Novel sectional assembly type shaft tubular pump device Active CN214577737U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202120082850.6U CN214577737U (en) 2021-01-12 2021-01-12 Novel sectional assembly type shaft tubular pump device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202120082850.6U CN214577737U (en) 2021-01-12 2021-01-12 Novel sectional assembly type shaft tubular pump device

Publications (1)

Publication Number Publication Date
CN214577737U true CN214577737U (en) 2021-11-02

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ID=78368597

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Application Number Title Priority Date Filing Date
CN202120082850.6U Active CN214577737U (en) 2021-01-12 2021-01-12 Novel sectional assembly type shaft tubular pump device

Country Status (1)

Country Link
CN (1) CN214577737U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112855553A (en) * 2021-01-12 2021-05-28 扬州大学 Novel sectional assembly type shaft tubular pump device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112855553A (en) * 2021-01-12 2021-05-28 扬州大学 Novel sectional assembly type shaft tubular pump device

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CB03 Change of inventor or designer information

Inventor after: Chen Songshan

Inventor after: Jiao Haifeng

Inventor after: Sun Li

Inventor after: Qin Zhongjian

Inventor after: Zhu Yadong

Inventor after: Zhou Zhengfu

Inventor before: Chen Songshan

Inventor before: Jiao Haifeng

Inventor before: Sun Yuzhong

Inventor before: Qin Zhongjian

Inventor before: Zhu Yadong

Inventor before: Zhou Zhengfu