CN211975405U

CN211975405U - Centrifugal pump

Info

Publication number: CN211975405U
Application number: CN202020562231.2U
Authority: CN
Inventors: 卢彩姣; 韩冰
Original assignee: Wuxi Xiangye Technology Co ltd
Current assignee: Wuxi Xiangye Technology Co ltd
Priority date: 2020-04-16
Filing date: 2020-04-16
Publication date: 2020-11-20
Anticipated expiration: 2030-04-16

Abstract

The utility model belongs to the technical field of centrifugal pumps, in particular to a centrifugal pump, which comprises a bottom plate, a motor and a centrifugal assembly, wherein the motor and the centrifugal assembly are fixed on the upper surface of the bottom plate, an output shaft of the motor is in transmission connection with the centrifugal assembly, the centrifugal assembly comprises a drain pipe and a water inlet pipe, the drain pipe is arranged at the upper end of the centrifugal assembly, the water inlet pipe is arranged on the side surface of the centrifugal assembly, the end part of the water inlet pipe is screwed with a filtering connecting pipe, a filter screen frame is arranged in the filtering connecting pipe, and filter holes are arranged on the surface of; through the filtration connecting pipe that the inlet tube tip closes soon for filter the connecting pipe and filter the inside liquid that enters into the inlet tube through internally mounted's screen frame, avoid the centrifugal pump when using the inside that the silt large granule in the liquid enters into centrifugal subassembly, avoid the inside paddle of centrifugal subassembly to receive wearing and tearing, prolonged the life-span that the centrifugal pump used, install simultaneously and filter the screen frame of connecting intraduct and carry on spacingly through the voltage limiting ring.

Description

Centrifugal pump

Technical Field

The utility model belongs to the technical field of the centrifugal pump, concretely relates to centrifugal pump.

Background

Centrifugal pumps operate by causing water to move centrifugally as a result of the rotation of an impeller. Before the water pump is started, the pump shell and the water suction pipe are filled with water, then the motor is started, the pump shaft drives the impeller and the water to rotate at a high speed, the water is thrown to the outer edge of the impeller to be thrown into a water pressure pipeline of the water pump through a flow channel of the volute-shaped pump shell. Traditional centrifugal pump is when using, and the liquid of entering is difficult to filter, causes the large granule to get into the pump shaft in, causes the impeller to damage, reduces the life-span that the centrifugal pump used, the poor problem of motor barrier propterty simultaneously.

SUMMERY OF THE UTILITY MODEL

To solve the problems set forth in the background art described above. The utility model provides a centrifugal pump has the centrifugal pump and is convenient for filter the large granule, and the large granule after filtering is convenient for discharge simultaneously, is convenient for carry out the characteristics of protecting to the motor simultaneously.

In order to achieve the above object, the utility model provides a following technical scheme: a centrifugal pump comprises a bottom plate, a motor and a centrifugal assembly, wherein the motor and the centrifugal assembly are fixed on the upper surface of the bottom plate, an output shaft of the motor is in transmission connection with the centrifugal assembly, the centrifugal assembly comprises a drain pipe and an inlet pipe, the drain pipe is arranged at the upper end of the centrifugal assembly, the inlet pipe is arranged on the side surface of the centrifugal assembly, the end part of the inlet pipe is screwed with a filter connecting pipe, a filter screen frame is arranged inside the filter connecting pipe, a filter hole is formed in the surface of the filter screen frame, a limiting ring is welded on the inner surface of the filter connecting pipe, one end of the filter screen frame is arranged between the limiting ring and the inlet pipe, a sealing gasket is sleeved at the end part of the filter screen frame between the inlet pipe and the limiting ring, a limiting convex ring is integrally formed on the surface of the sealing gasket, a limiting groove is formed on the, and a drain valve is arranged on the outer surface of the filtering connecting pipe.

As the utility model discloses a preferred technical scheme of centrifugal pump, the outside of motor is provided with the protection casing, the lower extreme welding of protection casing has the cutting, the last skin weld of bottom plate has the snap ring, the cutting inserts the inside of snap ring, the bolt is installed to the upper end of protection casing.

As the utility model discloses a preferred technical scheme of centrifugal pump, the protective housing has two half drums to constitute.

As the utility model discloses a preferred technical scheme of centrifugal pump, the screen frame is the coniform structure, the directional inlet tube of opening direction of screen frame.

As the utility model discloses a preferred technical scheme of centrifugal pump, sealed the pad is double-deck annular structure, sealed internal surface integrated into one piece's of pad spacing bulge loop is provided with two.

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

1. through the filtration connecting pipe that the inlet tube tip closes soon, make the filtration connecting pipe filter the inside liquid that enters into the inlet tube through internally mounted's strainer holder, avoid the inside that the silt large granule of centrifugal pump in the liquid enters into centrifugal subassembly when using, avoid the inside paddle of centrifugal subassembly to receive wearing and tearing, the life-span that the centrifugal pump used has been prolonged, install simultaneously and carry on spacingly through the limiting ring at the inside strainer holder that filters connecting pipe, the sealed pad that the strainer holder cup jointed through the tip simultaneously carries out inclosed, avoid inlet tube and filtration connecting pipe to close the junction soon and leak gas, filter the connecting pipe simultaneously and pass through surface mounting's blowoff valve, be convenient for filter the big granule under the connecting pipe internal filtering outwards discharge by the blowoff valve.

2. Through motor externally mounted's protection casing for the protection casing protects motor and centrifugal component's junction, has increased the security that the centrifugal pump used, and the lower extreme of protection casing passes through the cutting and the snap ring is connected with the bottom plate simultaneously, and the bolt fastening is passed through to the upper end of protection casing simultaneously, and protection casing lower extreme welded cutting inserts in the bottom plate upper surface welded snap ring, has increased the convenience and the stability of protection casing installation in the motor outside.

Drawings

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

fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the present invention and a half-section of a protective cover;

FIG. 3 is a schematic view of the connection structure of the filtering connecting pipe of the water inlet pipe of the present invention;

FIG. 4 is an enlarged schematic view of the structure at A in FIG. 3;

in the figure: 1. a base plate; 2. a motor; 3. a centrifuge assembly; 4. a drain pipe; 5. a water inlet pipe; 6. filtering the connecting pipe; 7. a screen frame; 8. filtering holes; 9. a pressure limiting ring; 10. a gasket; 11. a limiting groove; 12. a limit convex ring; 13. a protective cover; 14. cutting; 15. a snap ring; 16. a bolt; 17. a blowoff valve.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Examples

Referring to fig. 1-4, the present invention provides a technical solution: a centrifugal pump comprises a bottom plate 1, a motor 2 and a centrifugal assembly 3 which are fixed on the upper surface of the bottom plate 1, an output shaft of the motor 2 is in transmission connection with the centrifugal assembly 3, the centrifugal assembly 3 comprises a drain pipe 4 and a water inlet pipe 5, the drain pipe 4 is arranged at the upper end of the centrifugal assembly 3, the water inlet pipe 5 is arranged on the side surface of the centrifugal assembly 3, the end part of the water inlet pipe 5 is screwed with a filter connecting pipe 6, a filter screen frame 7 is arranged inside the filter connecting pipe 6, a filter hole 8 is arranged on the surface of the filter screen frame 7, a limiting ring 9 is welded on the inner surface of the filter connecting pipe 6, one end of the filter screen frame 7 is arranged between the limiting ring 9 and the water inlet pipe 5, a sealing gasket 10 is sleeved on the end part of the filter screen frame 7, which is positioned between the water inlet pipe 5 and the limiting ring 9, a limiting convex ring 12 is integrally formed on the surface of the sealing, the outer surface of the filtering connecting pipe 6 is provided with a drain valve 17.

In this embodiment, filter connecting pipe 6 through 5 tip of inlet tube soon closing, make filter connecting pipe 6 filter the liquid that enters into 5 inside of inlet tube through internally mounted's strainer frame 7, avoid the centrifugal pump inside that the silt large granule in the liquid enters into centrifugal component 3 when using, avoid the paddle of 3 inside of centrifugal component to receive wearing and tearing, the life-span that the centrifugal pump used has been prolonged, install simultaneously and filter the inside strainer frame 7 of connecting pipe 6 and carry on spacingly through limiting ring 9, simultaneously strainer frame 7 seals up 10 through the tip cup joints and seals, avoid inlet tube 5 and filter connecting pipe 6 to close the junction soon and leak gas, filter connecting pipe 6 simultaneously and pass through surface mounting's blowoff valve 17, be convenient for filter the large granule under 6 internal filtering of connecting pipe outwards discharge by blowoff valve 17.

Specifically, the outside of motor 2 is provided with protection casing 13, and the lower extreme welding of protection casing 13 has cutting 14, and the upper surface welding of bottom plate 1 has snap ring 15, and cutting 14 inserts the inside of snap ring 15, and bolt 16 is installed to the upper end of protection casing 13, and protection casing 13 has two half drums to constitute.

In this embodiment, through the protection casing 13 of motor 2 externally mounted for protection casing 13 protects motor 2 and centrifugal component 3's junction, the security of centrifugal pump use has been increased, the lower extreme of protection casing 13 passes through cutting 14 and snap ring 15 and is connected with bottom plate 1 simultaneously, the upper end of protection casing 13 is fixed through bolt 16 simultaneously, and in the welded cutting 14 of protection casing 13 lower extreme inserted into bottom plate 1 upper surface welded snap ring 15, the convenience and the stability of installing at motor 2 outside have been increased to protection casing 13.

Specifically, the strainer holder 7 is a conical structure, and the opening direction of the strainer holder 7 points to the water inlet pipe 5.

In this embodiment, be convenient for strainer holder 7 filters the liquid that enters into inlet tube 5 inside.

Specifically, the sealing gasket 10 is a double-layer annular structure, and two limiting convex rings 12 are integrally formed on the inner surface of the sealing gasket 10.

In this embodiment, the gasket 10 is conveniently sleeved on the end of the strainer holder 7.

The utility model discloses a theory of operation and use flow: during installation, the sealing gasket 10 is sleeved at one end of the filter screen frame 7, meanwhile, the limiting convex ring 12 integrally formed on the inner surface of the sealing gasket 10 is installed in the limiting groove 11 formed in the surface of the filter screen frame 7, the filter screen frame 7 is installed inside the filter connecting pipe 6, meanwhile, the sealing gasket 10 sleeved at the end part of the filter connecting pipe 6 is in contact with the pressure limiting ring 9, then the filter connecting pipe 6 is screwed to the end part of the water inlet pipe 5, the sealing gasket 10 sleeved at the end part of the filter screen frame 7 is extruded by the water inlet pipe 5 and the pressure limiting ring 9, the protective cover 13 is installed outside the motor 2, at the moment, the inserting strip 14 welded at the lower end of the protective cover 13 is inserted into the snap ring 15 welded on the upper surface of the bottom plate.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A centrifugal pump comprises a base plate (1), and a motor (2) and a centrifugal assembly (3) which are fixed on the upper surface of the base plate (1), and is characterized in that: the output shaft of motor (2) is connected with centrifugal subassembly (3) transmission, centrifugal subassembly (3) are including drain pipe (4) and inlet tube (5), drain pipe (4) set up the upper end in centrifugal subassembly (3), inlet tube (5) set up the side surface in centrifugal subassembly (3), the tip of inlet tube (5) closes soon and has filters connecting pipe (6), the internally mounted of filtering connecting pipe (6) has screen frame (7), filtration pore (8) have been seted up on the surface of screen frame (7), the internal surface welding limiting ring (9) of filtering connecting pipe (6), install between limiting ring (9) and inlet tube (5) one end of screen frame (7), the tip that screen frame (7) are located between inlet tube (5) and limiting ring (9) has cup jointed sealed pad (10), the surperficial integrated into one piece of sealed pad (10) has limiting convex ring (12), spacing groove (11) have been seted up on the surface that screen frame (7) are close to spacing bulge loop (12), just the inside at spacing groove (11) is installed in spacing bulge loop (12), the surface mounting who filters connecting pipe (6) has blowoff valve (17).

2. A centrifugal pump according to claim 1, characterized in that: the outside of motor (2) is provided with protection casing (13), the lower extreme welding of protection casing (13) has cutting (14), the last skin weld of bottom plate (1) has snap ring (15), the inside of snap ring (15) is inserted in cutting (14), bolt (16) are installed to the upper end of protection casing (13).

3. A centrifugal pump according to claim 2, characterized in that: the protective cover (13) is composed of two half cylinders.

4. A centrifugal pump according to claim 1, characterized in that: the filter screen frame (7) is of a conical structure, and the opening direction of the filter screen frame (7) points to the water inlet pipe (5).

5. A centrifugal pump according to claim 1, characterized in that: the sealing gasket (10) is of a double-layer annular structure, and two limiting convex rings (12) are arranged on the inner surface of the sealing gasket (10) in an integrally formed mode.