CN220505406U

CN220505406U - Centrifugal pump shell

Info

Publication number: CN220505406U
Application number: CN202322207193.5U
Authority: CN
Inventors: 高恒; 高树海; 刘国平; 陈永山; 高树进
Original assignee: Yancheng Zhenye Machinery Co ltd
Current assignee: Yancheng Zhenye Machinery Co ltd
Priority date: 2023-08-16
Filing date: 2023-08-16
Publication date: 2024-02-20
Anticipated expiration: 2033-08-16

Abstract

The utility model discloses a centrifugal pump shell, which comprises a shell and a water inlet connecting pipe; an internal threaded hole is formed in the center of the shell, a convex ring is arranged in the center of the shell, and a sealing ring is arranged on the outer surface of the convex ring; the connecting ring has been cup jointed outward to the connecting pipe that intakes, be equipped with the installation annular plate between the terminal surface of connecting ring one end and the terminal surface edge of connecting pipe one end of intaking, the side that the installation annular plate was kept away from to the connecting ring is fixed with sealing washer, the connecting pipe surface of intaking is equipped with the external screw thread with internal thread hole threaded connection, the connecting pipe that intakes passes through internal thread connection on the casing, the casing lateral surface is equipped with strengthens the honeycomb panel, it is equipped with the articulamentum to strengthen the honeycomb panel lateral surface, impact resistance is good, make its prestressing force strengthen, the outer surface of connecting layer is equipped with the structure of making an uproar falls, increase the performance of making an uproar, provide better operational environment.

Description

Centrifugal pump shell

Technical Field

The utility model relates to the technical field of centrifugal pumps, in particular to a centrifugal pump shell.

Background

A centrifugal pump is a fluid machine whose principle of operation is to use centrifugal force to transport liquid from a low pressure region to a high pressure region. The structure of the pump mainly comprises a pump body, an impeller and a bearing.

When the centrifugal pump is started, the motor drives the impeller to rotate, liquid is sucked into the central inlet of the pump body, and the liquid is thrown to the periphery of the impeller due to the rotation of the impeller, so that a low-pressure area is formed. Liquid is sucked in a low-pressure area and rotates along the outer edge of the impeller, and in the energy conversion process, high-pressure water flow rapidly flows in the pump shell and collides with the inner wall of the pump shell to generate a large amount of noise, and particularly for the end surface corresponding to the water inlet of the centrifugal pump, the high-pressure water flow collides with the inner wall of the pump shell to vibrate, so that larger noise is generated and the surrounding working environment is influenced; in addition, the pump shell needs to be collided with high-pressure water flow continuously, so that the structure of the pump shell structure is designed to be more durable, the prior art only improves the materials for manufacturing the pump shell to improve the durability, and a great deal of experimental study is needed to be put into the improvement mode, and the working procedure is complex, so that a new technology is provided.

Disclosure of Invention

The utility model solves the technical problems and provides the centrifugal pump shell which has noise reduction performance, is simple and improved and is more durable.

In order to solve the technical problems, the technical scheme provided by the utility model is as follows: a centrifugal pump shell comprises a shell body and a water inlet connecting pipe; an internal threaded hole is formed in the center of the shell, and two ends of the internal threaded hole penetrate through the shell;

a convex ring is arranged at the inner center of the shell, the inner threaded hole is positioned in the convex ring, and the inner diameter of the convex ring is the same as the maximum diameter of the inner threaded hole;

the outer surface of the convex ring is provided with a sealing groove along the circumferential direction, a sealing ring is fixed in the sealing groove, and the sealing ring is an annular sealing piece with a notch and is abutted against the inner hole wall of the static piece to play a sealing role by virtue of elasticity of the pressed sealing piece;

the connecting ring is sleeved outside the water inlet connecting pipe, a mounting ring plate is arranged between the end face of one end of the connecting ring and the edge of the end face of one end of the water inlet connecting pipe, the diameter of a central hole of the mounting ring plate is at least the same as that of the inner space of the water inlet connecting pipe, and a connecting groove capable of accommodating a sealing ring is arranged on the inner side door of the connecting ring and is used for accommodating the sealing ring, and the thickness of the sealing ring is larger than the depth of the connecting groove plus the depth of the sealing groove, so that the sealing ring can be elastically deformed and tightly connected;

the side surface of the connecting ring, which is far away from the mounting ring plate, is fixed with a sealing gasket, the sealing gasket has the same structure as the sealing ring, but the sealing gasket is abutted against the inner surface of the shell, and the other end of the sealing gasket is fixed on the ring surface of the connecting ring;

the outer surface of the water inlet connecting pipe is provided with an external thread in threaded connection with the internal thread hole, and the water inlet connecting pipe is connected to the shell through the internal thread, so that the water inlet connecting pipe is better fixed, and the tightness is high;

the outer side surface of the shell is provided with a reinforced honeycomb plate, the outer side surface of the reinforced honeycomb plate is provided with a connecting layer, the reinforced honeycomb plate is used for reinforcing the shell structure, so that prestress of the shell structure is reinforced, meanwhile, the whole weight is not heavy due to the honeycomb plate, the outer surface of the connecting layer is provided with a noise reduction structure, the noise reduction performance is improved, and a good working environment is provided;

the shell is internally provided with an inclined plane, the thickness of the inclined plane is gradually reduced from being close to the internal threaded hole to being far away from the internal threaded hole, the inclined plane surface is provided with a plurality of guide vanes, water flow rotates in the shell and is continuously expanded to the side of the shell under the guide of the guide vanes, so that the channel area is continuously enlarged when water passes through the water outlet of the centrifugal pump, and the water flows out more smoothly.

Further, the axial lead of the internal threaded hole and the convex ring are coincident, which is beneficial to water flow.

Further, the rotation direction of the guide vane is consistent with that of the impeller of the centrifugal pump, the guide vane is arc-shaped, the radius of the guide vane is three fifths of that of the impeller of the centrifugal pump, the noise is overlarge due to the fact that the radius of the guide vane is too small, and the water body flow is influenced due to the fact that the radius of the guide vane is too large.

Further, the noise reduction structure comprises a plurality of sound absorbing plates arranged on the outer surface of the connecting layer, the sound absorbing plates are arranged on the connecting layer at intervals, sound insulating plates are arranged between the outer side surfaces of the sound absorbing plates, the sound absorbing plates absorb sound, the sound of the sound insulating plates is reduced to be exposed, and the noise reduction performance is greatly improved.

Further, the connecting layer is a carbon fiber plate, and the carbon fiber plate has light weight, high strength and good impact resistance, and improves the strength and the impact resistance of the shell.

Further, the outer side surface of the sound absorbing plate is provided with a plurality of friction-resistant silica gel bumps.

Further, the sealing ring protrudes from the inside of the sealing groove to the outside of the convex ring, and can be inserted into the connecting groove.

Compared with the prior art, the utility model has the advantages that: the product is provided with the sound insulation board, the sound absorption board absorbs sound, the sound exposure of the sound insulation board is reduced, the noise reduction performance is greatly improved, and the connecting layer is arranged, the honeycomb board is reinforced, the shell structure is reinforced, the impact resistance is good, and the prestress of the honeycomb board is reinforced; the guide vanes are arranged to facilitate the water body to flow; and the integral structural component is easy to obtain from the market, has low cost and is easy to assemble.

Drawings

Fig. 1 is a schematic front view of a centrifugal pump casing according to the present utility model.

Fig. 2 is a schematic cross-sectional view of a centrifugal pump casing according to the present utility model.

Fig. 3 is an exploded view of a centrifugal pump housing according to the present utility model.

As shown in the figure: 1. the shell comprises a shell body, 2, a water inlet connecting pipe, 3, a convex ring, 4, a sealing groove, 5, a sealing ring, 6, a connecting ring, 7, a mounting ring plate, 8, a sealing gasket, 9, external threads, 10, a reinforced honeycomb plate, 11, a connecting layer, 12, an inclined plane, 13, guide vanes, 14, an acoustic board, 15, an acoustic board, 16, a silica gel lug, 17, an internal threaded hole, 18 and a connecting groove.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings.

With reference to fig. 1 and 2, a centrifugal pump shell comprises a shell 1 and a water inlet connecting pipe 2, wherein the shell is arranged on a centrifugal pump body; an internal threaded hole 17 is formed in the inner center of the shell 1, and two ends of the internal threaded hole penetrate through the shell;

the center in the shell 1 is provided with a convex ring 3 which is integrally manufactured with the shell, an internal threaded hole 17 is positioned in the convex ring 3, and the internal diameter of the convex ring is the same as the maximum diameter of the internal threaded hole;

preferably, the inner threaded hole coincides with the axis of the convex ring, which is beneficial to water flow.

The outer surface of the convex ring 3 is provided with a sealing groove 4 along the circumferential direction, a sealing ring 5 is fixed in the sealing groove 4, and the sealing ring is an annular sealing piece with a notch and is abutted against the inner hole wall of the static piece to play a sealing role by virtue of elasticity of the pressed sealing piece;

the water inlet connecting pipe 2 is externally sleeved with a connecting ring 6, the connecting ring can be sleeved outside the convex ring, a mounting ring plate 7 is fixed between the end face of one end of the connecting ring 6 and the edge of the end face of one end of the water inlet connecting pipe 2, the diameter of a central hole of the mounting ring plate is at least the same as that of the inner space of the water inlet connecting pipe, a connecting groove 18 capable of accommodating a sealing ring 5 is formed in the inner side door of the connecting ring 6, the connecting groove is used for accommodating the sealing ring, the thickness of the sealing ring is larger than the depth of the connecting groove and the depth of the sealing groove, and the sealing ring can be elastically deformed and tightly connected;

preferably, the seal ring 5 protrudes from the inside of the seal groove 4 to the outside of the bulge loop 3, and the protruding portion can be inserted into the connection groove.

The side surface of the connecting ring 6 far away from the mounting ring plate 7 is fixed with a sealing gasket 8, the sealing gasket has the same structure as the sealing ring, but the sealing gasket is tightly abutted against the inner surface of the shell, and the other end of the sealing gasket is fixed on the ring surface of the connecting ring;

the outer surface of the water inlet connecting pipe 2 is provided with an external thread 9 in threaded connection with an internal thread hole 17, the water inlet connecting pipe 2 is connected to the shell through the internal thread hole, so that the water inlet connecting pipe is better fixed, the sealing performance is high, the water inlet connecting pipe is movably connected with the inside of the shell in the mode, the sealing effect is greatly improved, and the connection stability between the water inlet connecting rod and the shell is not easy to break;

the outer side surface of the shell 1 is provided with a reinforced honeycomb plate 10, the outer side surface of the reinforced honeycomb plate 10 is provided with a connecting layer 11, the reinforced honeycomb plate reinforces the shell structure to strengthen the prestress of the shell structure, meanwhile, the whole weight is not heavy due to the honeycomb plate, the connecting layer comprises a structure of a main whole reinforced honeycomb plate and the shell, the outer surface of the connecting layer 11 is provided with a noise reduction structure, the noise reduction performance is improved, and a better working environment is provided;

with reference to fig. 2 and 3, the casing 1 is internally provided with an inclined plane 12 on the circumferential surface, the thickness of the inclined plane 12 gradually decreases from being close to the internal threaded hole 17 to being far away from the internal threaded hole 17, the surface of the inclined plane 12 is provided with a plurality of guide vanes 13, water flow rotates in the casing and is continuously expanded to the side of the casing under the guide of the guide vanes, so that when water passes through a water outlet of the centrifugal pump, the channel area is continuously expanded, the water flows out more smoothly, the casing is arranged on a pump body to form an integral centrifugal pump, and the side surface of the centrifugal pump, which is close to the casing, is also provided with the water outlet, which is of a known structure and is not tired in the text.

Preferably, the rotation direction of the guide vane 13 is consistent with that of the impeller of the centrifugal pump, the guide vane 13 is arc-shaped, the radius of the guide vane is three fifths of that of the impeller of the centrifugal pump, the noise is overlarge due to the fact that the radius of the guide vane is too small, and the water body flow is influenced due to the fact that the radius of the guide vane is too large.

As an embodiment of the present utility model, the noise reduction structure includes a plurality of sound absorbing boards 14 disposed on the outer surface of the connection layer 11, the sound absorbing boards 14 are disposed on the connection layer 11 at intervals, and a sound insulation board 15 is disposed between the outer side surfaces of the sound absorbing boards 14, so that the sound absorbing boards absorb sound, and the sound insulation board reduces the exposure of sound, thereby greatly improving the noise reduction performance.

As an embodiment of the present utility model, the connection layer 11 is a carbon fiber plate material, which has light weight, high strength, and good impact resistance, and improves the strength and impact resistance of the housing.

As an embodiment of the present utility model, the outer side of the sound absorbing plate 15 is provided with a plurality of anti-friction silica gel bumps 16.

When the utility model is in specific implementation, during use, the water inlet connecting pipe passes through the shell, then the water inlet connecting pipe is in threaded connection with the internal threaded hole in the shell, in the process, the sealing gasket is continuously close to the inner surface of the shell, and the connecting ring presses the sealing ring until the threaded connection is completed, so that the sealing effect is greatly improved, and the connection stability between the water inlet connecting pipe and the shell is not easy to break; the sound-absorbing plate is arranged, the sound-absorbing plate absorbs sound, the sound exposure of the sound-absorbing plate is reduced, the noise reduction performance is greatly improved, the connecting layer is arranged, the honeycomb plate is reinforced, the shell structure is reinforced, the impact resistance is good, and the prestress is reinforced; the guide vanes are arranged to facilitate the water body to flow; and the whole structural part is easy to obtain from the market, has low cost and easy assembly, greatly enhances the performance and is worthy of popularization and use.

The utility model and its embodiments have been described above with no limitation, and the actual construction is not limited to the embodiments of the utility model as shown in the drawings. In summary, if one of ordinary skill in the art is informed by this disclosure, a structural manner and an embodiment similar to the technical solution should not be creatively devised without departing from the gist of the present utility model.

Claims

1. The utility model provides a centrifugal pump shell, includes casing (1), water inlet connection pipe (2), its characterized in that: an inner threaded hole (17) is formed in the inner center of the shell (1), a convex ring (3) is arranged in the inner center of the shell (1), the inner threaded hole (17) is located in the convex ring (3), a sealing groove (4) is formed in the outer surface of the convex ring (3) along the circumferential direction, a sealing ring (5) is arranged in the sealing groove (4), a connecting ring (6) is sleeved outside the water inlet connecting pipe (2), a mounting ring plate (7) is arranged between the end face of one end of the connecting ring (6) and the edge of the end face of one end of the water inlet connecting pipe (2), and a connecting groove (18) capable of accommodating the sealing ring (5) is formed in an inner side door of the connecting ring (6); the side surface of the connecting ring (6) far away from the mounting ring plate (7) is provided with a sealing gasket (8); an external thread (9) in threaded connection with an internal threaded hole (17) is arranged on the outer surface of the water inlet connecting pipe (2); the outer side surface of the shell (1) is provided with a reinforced honeycomb plate (10), the outer side surface of the reinforced honeycomb plate (10) is provided with a connecting layer (11), and the outer surface of the connecting layer (11) is provided with a noise reduction structure; the shell (1) is internally provided with an inclined surface (12) on the circumferential surface, the thickness of the inclined surface (12) gradually decreases from being close to the internal threaded hole (17) to being far away from the internal threaded hole (17), and a plurality of guide vanes (13) are arranged on the surface of the inclined surface (12).

2. A centrifugal pump housing according to claim 1, wherein: the internal threaded hole (17) coincides with the axial lead of the convex ring (3).

3. A centrifugal pump housing according to any one of claims 1-2, wherein: the guide vane (13) is consistent with the rotation direction of the impeller of the centrifugal pump, the guide vane (13) is arc-shaped, and the radius of the guide vane is three fifths of the radius of the impeller vane of the centrifugal pump.

4. A centrifugal pump housing according to claim 3, wherein: the noise reduction structure comprises a plurality of sound absorbing plates (14) arranged on the outer surface of a connecting layer (11), the sound absorbing plates (14) are arranged on the connecting layer (11) at intervals, and sound insulation plates (15) are arranged between the outer side surfaces of the sound absorbing plates (14).

5. A centrifugal pump housing according to claim 4, wherein: the connecting layer (11) is a carbon fiber plate.

6. A centrifugal pump housing according to claim 5, wherein: the outer side surface of the sound absorbing plate (14) is provided with a plurality of friction-resistant silica gel convex blocks (16).

7. A centrifugal pump housing according to claim 6, wherein: the sealing ring (5) protrudes from the inside of the sealing groove (4) to the outside of the convex ring (3).