CN215633732U

CN215633732U - Quiet pump that sea water medium is suitable for

Info

Publication number: CN215633732U
Application number: CN202121821578.5U
Authority: CN
Inventors: 梁伟阁; 闫啸家; 李池; 赵洋
Original assignee: Naval University of Engineering PLA
Current assignee: Naval University of Engineering PLA
Priority date: 2021-08-05
Filing date: 2021-08-05
Publication date: 2022-01-25
Anticipated expiration: 2031-08-05

Abstract

The utility model relates to the technical field of seawater pumps, in particular to a quiet pump suitable for seawater media. Including the hollow pump body, protecgulum and hou gai are installed respectively through the screw to the front end and the rear end of the pump body, be provided with the main shaft in the pump body, the one end of main shaft sets up in the protecgulum, and the back lid is worn out to the other end, the outer wall of main shaft is provided with the external gear, external gear meshing ring gear rotates, external gear meshing ring gear, the inner wall of ring gear is provided with the crescent moon board upper plate, the outer wall of external gear is provided with the crescent moon board hypoplastron, crescent moon board upper plate and crescent moon board hypoplastron integrated into one piece, water inlet, first delivery port and second delivery port have still been seted up on the pump body. This is novel to have simple structure, overall dimension is little, from inhaling the performance good, has pressure pulsation moreover little, do not have advantages such as stranded oil phenomenon, can control the vibration noise of sea water pump, reduces mechanical vibration and noise that driving system arouses.

Description

Quiet pump that sea water medium is suitable for

Technical Field

The utility model relates to the technical field of seawater pumps, in particular to a quiet pump suitable for seawater media.

Background

The seawater pump can lift seawater, is used for fire fighting, equipment heat dissipation and seawater desalination of offshore platforms, can also be used for ground source heat pump air conditioner heating in a coastal region, or coastal square fountain landscape, or mariculture and the like, and has the characteristics of low noise, high efficiency and electric energy saving.

The existing sea water pump for equipment adopts an involute external gear pump or a vane pump, and the pump has a series of advantages of simple structure, small external dimension, good self-absorption performance and the like, but also has the defect of large vibration noise caused by uneven flow and trapped oil. The internal gear pump not only has a series of advantages of an external gear pump, but also has the advantages of small pressure pulsation, no oil trapping phenomenon and the like, and can control the vibration noise of the seawater pump and reduce the mechanical vibration and noise caused by a power system. At present, the technical research of the internal gear oil pump has a great breakthrough in various countries in the world, and the internal gear oil pump has been applied to the hydraulic industry to a certain extent. However, internal gear pumps for use in seawater media have not been developed for industrial or industrial use.

SUMMERY OF THE UTILITY MODEL

In view of the above problems, the present invention aims to provide a quiet pump suitable for seawater medium, which has the characteristics of small pressure pulsation, no trapped oil phenomenon, etc.

In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:

a quiet pump suitable for seawater media comprises a hollow pump body, wherein a front cover and a rear cover are respectively installed at the front end and the rear end of the pump body through screws, a main shaft is arranged in the pump body, one end of the main shaft is arranged in the front cover, the other end of the main shaft penetrates out of the rear cover, an outer gear is arranged on the main shaft through a flat key and is meshed with an inner gear ring to rotate, a crescent plate upper plate is arranged on the inner wall of the inner gear ring, a crescent plate lower plate is arranged on the outer wall of the outer gear, the crescent plate upper plate and the crescent plate lower plate are integrally formed, and a water inlet, a first water outlet and a second water outlet are further formed in the pump body.

One side of the outer gear, which is close to the front cover, is provided with a first floating side plate, one side of the outer gear, which is close to the rear cover, is provided with a second floating side plate, and the first floating side plate and the second floating side plate have the same structure.

A first back pressure plate is arranged between the first floating side plate and the inner side wall of the front cover, a second back pressure plate is arranged between the second floating side plate and the inner cavity side wall of the pump body, a first O-shaped sealing ring is arranged on the periphery of the first back pressure plate, and a second O-shaped sealing ring is arranged on the periphery of the second back pressure plate.

A rolling bearing is arranged between the main shaft and the pump body, and a lip type sealing ring is arranged on one side, close to the outer gear, of the rolling bearing.

And a sealing pin and an elastic cylindrical pin for positioning are arranged on the lower plate of the crescent plate.

Compared with the prior art, the utility model has the beneficial effects that:

1. the external gear with internal gearing adopts an involute structure form, and can separate a water suction cavity from a water pressing cavity;

2. the crescent partition plate is arranged, the shape of the crescent partition plate is formed by intersecting addendum circles of the inner gear and the outer gear, and the sharp corner of the crescent partition plate is cut off, so that the abrasion can be reduced;

3. the floating side plates are arranged on the two sides of the outer gear, so that the silent pump is axially compensated, and meanwhile, the sufficient volumetric efficiency can be ensured;

4. considering that a gear pair in the gear pump rotates and a pump body in contact with the gear pair does not move, a rolling bearing is arranged between an outer gear and the pump body and is in transition fit with the pump body so as to ensure the normal work of the silent pump;

5. a crescent plate is arranged between the outer gear and the inner gear ring and can play a role in sealing, and when the hydraulic pump works, the spring pieces enable the crescent plate to be tightly attached to the tooth root circles of the inner gear ring and the outer gear ring, so that sealing is realized, and seawater in a high-pressure area is prevented from flowing back to a low-pressure area.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model.

In the drawings:

fig. 1 is a front sectional view of the present invention.

Fig. 2 is a side cross-sectional view of the present invention.

Fig. 3 is an enlarged view of a portion a in fig. 2.

Wherein: 1. the pump body, 2. a retainer ring, 3. a rear cover, 4. a rolling bearing, 5. a lip type sealing ring, 6. a bimetallic shaft sleeve, 7. a second back pressure plate, 8. a second floating side plate, 9. a first back pressure plate, 10. a second O-shaped sealing ring, 11. a first O-shaped sealing ring, 12. a first floating side plate, 13. a main shaft, 14. a flat key, 15. an outer gear, 16. a front cover, 17. an inner gear ring, 18. a screw, 19. a water inlet, 20. a first water outlet, 21. a sealing pin, 22. an elastic cylindrical pin, 23. a spring piece, 24. a crescent plate upper plate, 25. a rod, 26. a crescent plate lower plate, 27. a second water outlet.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

Example (b):

referring to the attached drawings 1-3, the quiet pump suitable for seawater media comprises a hollow pump body 1, wherein a water inlet 19, a first water outlet 20 and a second water outlet 27 are formed in the pump body 1.

The front end and the rear end of the pump body 1 are respectively provided with a front cover 16 and a rear cover 3 through screws 18, a main shaft 13 is arranged in the pump body 1, one end of the main shaft 13 is arranged in the front cover 16, and the other end of the main shaft penetrates out of the rear cover 3.

The main shaft 13 is provided with an external gear 15 through a flat key 14, the tooth form of the external gear 15 is an involute form, the tooth number of the gear 15 is 13, and the modulus: 3.5mm, tooth width: 65mm, center distance: 2.5mm, coefficient of variation: 0.125, rotation speed: 3100 rpm.

The outer gear 15 is meshed with the inner gear ring 17 to rotate, when the outer gear 15 and the inner gear ring 17 rotate, seawater is sucked into the pump, the seawater is sucked to the first water outlet 20 and the second water outlet 27 by the rotating outer gear 15 and the inner gear ring 17, and meanwhile, the space between the teeth in the area of the first water outlet 20 and the second water outlet 27 is continuously reduced, so that the seawater is pressed out of the pump body 1.

The inner wall of the inner gear ring 17 is provided with a crescent upper plate 24, the outer wall of the outer gear 15 is provided with a crescent lower plate 26, the crescent upper plate 24 and the crescent lower plate 26 are integrally formed, the integrally formed crescent is formed by intersecting addendum circles of the inner gear and the outer gear, the crescent upper plate 24 and the crescent lower plate 26 can play a role in sealing, and when the silent pump works, the crescent upper plate 24 and the crescent lower plate 26 are respectively attached to the dedendum circles of the inner gear ring 17 and the outer gear 15, so that sealing is realized, a water suction cavity and a water pressing cavity are separated, and seawater in a high-pressure area is prevented from flowing back to a low-pressure area. And simultaneously, sharp angles of the upper crescent plate 24 and the lower crescent plate 26 are cut off, and abrasion is reduced.

The quiet pump is characterized in that a first floating side plate 12 is arranged on one side, close to the front cover 16, of the outer gear 15, a second floating side plate 8 is arranged on one side, close to the rear cover 3, of the outer gear 15, the first floating side plate 12 and the second floating side plate 8 are identical in structure, and gap leakage between two end faces of the outer gear 15 and the front cover 16 and the rear cover 3 can be controlled, so that axial compensation is performed on the pump, the volumetric efficiency is improved, and the volumetric efficiency of the quiet pump of the embodiment can reach 0.7.

Be provided with first backpressure board 9 between the inside wall of first unsteady curb plate 12 and protecgulum 16, first backpressure board 9 can play clearance compensation's effect for the inner chamber of the pump body 1 is sealed complete, be provided with second backpressure board 7 between the unsteady curb plate 8 of second and the inner chamber lateral wall of the pump body 1, second backpressure board 7 can play clearance compensation's effect, first backpressure board 9 periphery is provided with first O shape sealing washer 11, second backpressure board 7 periphery is provided with second O shape sealing washer 10, can play sealed effect.

Be provided with antifriction bearing 4 between main shaft 13 and the pump body 1, can play better rolling effect, antifriction bearing 4 is provided with lip formula sealing washer 5 near one side of external gear 15, can warp under the effect of hydraulic pressure to realize sealed effect, be provided with retaining ring 2 between antifriction bearing 4 and the lip formula sealing washer 5, retaining ring 2 can play further sealed effect.

The crescent lower plate 26 is provided with a sealing pin 21 and an elastic cylindrical pin 22 for positioning. Wherein the sealing pin 21 has a sealing effect.

A bimetallic shaft sleeve 6 is also arranged between the main shaft 13 and the pump body 1.

The crescent plate lower plate 26 is also provided with a spring piece 23 and a rod 25, the spring piece 23 enables the crescent plate upper plate 24 and the crescent plate lower plate 26 to be tightly attached to the root circle of the inner gear ring 17 and the outer gear 15, so that sealing is realized, seawater in a high-pressure area is prevented from flowing back to a low-pressure area, and the rod 25 has a fixed function.

The principle and the using process of the utility model are as follows:

under the driving of external force, the main shaft 13 of the quiet pump drives the external gear 15 to rotate anticlockwise, seawater enters the pump body 1 through the water inlet 19, the external gear 15 drives the internal gear ring 17 to rotate, when the external gear 15 and the internal gear ring 17 rotate, the seawater is sucked into the pump body 1, the rotating gear 15 and the internal gear ring 17 bring the seawater to the first water outlet 20 and the second water outlet 27, meanwhile, the space between teeth in the water outlet area is continuously reduced, and the seawater is pressed out of the pump body 1.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A quiet pump suitable for seawater medium comprises a hollow pump body (1), wherein a front cover (16) and a rear cover (3) are respectively installed at the front end and the rear end of the pump body (1) through screws (18), and the quiet pump is characterized in that: be provided with main shaft (13) in the pump body (1), the one end of main shaft (13) sets up in protecgulum (16), and back lid (3) are worn out to the other end, the outer wall of main shaft (13) is provided with outer gear (15) through flat key (14), outer gear (15) meshing ring gear (17) rotate, the inner wall of ring gear (17) is provided with crescent moon board upper plate (24), the outer wall of outer gear (15) is provided with crescent moon board hypoplastron (26), crescent moon board upper plate (24) and crescent moon board hypoplastron (26) integrated into one piece, water inlet (19), first delivery port (20) and second delivery port (27) have still been seted up on the pump body (1).

2. A silent pump for seawater media as claimed in claim 1 wherein: one side of the outer gear (15) close to the front cover (16) is provided with a first floating side plate (12), one side of the outer gear (15) close to the rear cover (3) is provided with a second floating side plate (8), and the first floating side plate (12) and the second floating side plate (8) are identical in structure.

3. A silent pump for seawater media as claimed in claim 2 wherein: be provided with first back pressure board (9) between the inside wall of first unsteady curb plate (12) and protecgulum (16), be provided with second back pressure board (7) between the inner chamber lateral wall of the unsteady curb plate of second (8) and the pump body (1), first back pressure board (9) periphery is provided with first O shape sealing washer (11), second back pressure board (7) periphery is provided with second O shape sealing washer (10).

4. A silent pump for seawater media as claimed in claim 3 wherein: a rolling bearing (4) is arranged between the main shaft (13) and the pump body (1), and a lip type sealing ring (5) is arranged on one side, close to the outer gear (15), of the rolling bearing (4).

5. A silent pump for seawater media as claimed in claim 4 wherein: and a sealing pin (21) and an elastic cylindrical pin (22) for positioning are arranged on the crescent plate lower plate (26).