CN218953656U

CN218953656U - Vertical single-stage centrifugal pump

Info

Publication number: CN218953656U
Application number: CN202223326586.XU
Authority: CN
Inventors: 乔凯杰
Original assignee: Zhejiang Ouwo Pump Industry Manufacturing Co ltd
Current assignee: Zhejiang Ouwo Pump Industry Manufacturing Co ltd
Priority date: 2022-12-10
Filing date: 2022-12-10
Publication date: 2023-05-02
Anticipated expiration: 2032-12-10

Abstract

The utility model provides a vertical single-stage centrifugal pump, which belongs to the technical field of centrifugal pumps and comprises a medium pump body, a pump cover, a vertical motor, a driving shaft and an impeller, and also comprises a protection shell, wherein the lower end of the protection shell is provided with a connecting flange which is connected with the pump cover through bolts, the upper end of the protection shell is provided with an arc-shaped top, a guide ring is arranged in the middle of the arc-shaped top, a connecting rib is arranged between the guide ring and the arc-shaped top, and an air outlet channel is formed between the adjacent connecting rib and the guide ring and the arc-shaped top; the vertical motor is externally sleeved with the protection shell, so that the vertical motor is waterproof and dustproof, the environmental adaptability is strong, meanwhile, the top of the protection shell is provided with the arc-shaped top, accumulated water and a large amount of accumulated ash can be avoided by the arc-shaped top, the guide ring and the air outlet channel are also arranged, hot air can be upwards discharged from the inner part of the guide ring and then discharged from the air outlet along the arc-shaped top and the air outlet channel, the temperature rise caused by accumulated heat on the inner wall of the protection shell is avoided, the overall applicability is strong, and the service life is long.

Description

Vertical single-stage centrifugal pump

Technical Field

The utility model relates to the technical field of centrifugal pumps, in particular to a vertical single-stage centrifugal pump.

Background

The vertical pipeline centrifugal pump is used for conveying clear water and other liquid with physical and chemical properties similar to that of the clear water, and is suitable for industrial and urban water supply and drainage, pressurization and water supply of high-rise buildings, garden sprinkling irrigation, fire-fighting pressurization, long-distance conveying and heating ventilation refrigeration circulation; the principle is that the mechanical energy of the prime mover is transferred to the liquid by virtue of the action of the rotating impeller on the liquid. The liquid discharged by the impeller passes through the extrusion chamber, most of the speed energy is converted into pressure energy, and then the pressure energy is conveyed out along the discharge pipeline, at the moment, vacuum or low pressure is formed at the inlet of the impeller due to the discharge of the liquid, and the liquid in the water suction tank is pressed into the inlet of the impeller under the action of liquid level pressure/atmospheric pressure, so that the rotating impeller continuously sucks and discharges the liquid.

In the prior art, as disclosed in the patent with publication number CN211230853U, a novel vertical single-stage centrifugal pump is disclosed, in which a motor is in direct contact with the outside, and no protection measures are provided, and an air outlet is usually provided at the top of the vertical motor, if the motor is installed outdoors, the motor is easy to burn out under the condition of heavy rain, if the motor is in a dusty environment, dust is easy to accumulate in the motor, and the performance of the motor is affected.

Disclosure of Invention

The utility model aims to overcome the defects and the shortcomings of the prior art and provides a vertical single-stage centrifugal pump with a motor protection shell.

The technical scheme adopted by the utility model is as follows: the utility model provides a vertical single-stage centrifugal pump, includes the pump body that has medium import and medium export, the pump body upper end is connected with the pump cover, the pump cover upper end is connected with vertical motor, vertical motor is including the drive shaft, the one end of drive shaft passes the pump cover and stretches into the pump body and be connected with the impeller, and it is still including the cover to establish the outer protective housing of vertical motor, the protective housing lower extreme is provided with flange and pump cover bolted connection, and its upper end is provided with the arc top, be provided with the guide ring in the middle of the arc top, the diameter of the upper shed of guide ring is less than the diameter of lower shed, evenly be provided with a plurality of connecting tendons between guide ring surface and the arc top internal surface, constitute the air-out passageway between adjacent connecting tendons and guide ring surface and the arc top internal surface, the protective housing circumference of arc top lower extreme evenly is provided with a plurality of air outlets with the air-out passageway intercommunication, the air outlet top is provided with the arc protruding edge.

A mechanical seal is arranged between the driving shaft and the pump cover, and a water blocking ring is arranged on the driving shaft above the mechanical seal.

The pump body is internally provided with a suction chamber, an impeller mounting chamber and an extrusion chamber, the impeller is arranged in the impeller mounting chamber, a groove for embedding the lower part of the impeller is formed at the communication part of the suction chamber and the impeller mounting chamber, and rotary sealing is arranged between the groove and the impeller.

The pump body corresponding to the impeller mounting chamber is provided with a deflation cock, and the lower part of the suction chamber is provided with a drain valve.

The vertical motor is provided with a steering mark, a visible window is arranged at the position, corresponding to the steering mark, of the protection shell, a supporting part is arranged at the lower side of the air outlet, facing the vertical motor, of the protection shell, and a bottom plate is connected to the bottom of the pump body.

The circumference outer wall of protection casing sets up evenly is provided with a plurality of connection platform, evenly be provided with a plurality of connecting holes on the connection platform.

A metal winding gasket is arranged between the pump cover and the pump body.

The beneficial effects of the utility model are as follows: the vertical motor is provided with the protection shell in a sleeved mode, so that the vertical motor can be waterproof and dustproof, and has strong environmental adaptability, because the top of the vertical motor is provided with the air outlet, hot air generated during motor operation can be discharged from the top of the vertical motor, therefore, the top of the protection shell is provided with the arc-shaped top, accumulated water and a large amount of accumulated dust can be avoided, meanwhile, the guide ring and the air outlet channel are arranged, hot air can be upwards discharged from the inside of the guide ring, and then discharged from the air outlet along the arc-shaped top and the air outlet channel, temperature rise caused by accumulated heat on the inner wall of the protection shell is avoided, meanwhile, the arc-shaped convex edge is arranged above the air outlet, rainwater is prevented from flowing in from the air outlet, the whole applicability is strong, and the service life is long.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are required in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that it is within the scope of the utility model to one skilled in the art to obtain other drawings from these drawings without inventive faculty.

FIG. 1 is a schematic illustration of the present utility model;

FIG. 2 is an enlarged view of FIG. 1 at A;

FIG. 3 is an enlarged view at B in FIG. 1;

fig. 4 is an enlarged view at C in fig. 1.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings, for the purpose of making the objects, technical solutions and advantages of the present utility model more apparent.

It should be noted that, in the embodiments of the present utility model, all the expressions "first" and "second" are used to distinguish two entities with the same name but different entities or different parameters, and it is noted that the "first" and "second" are only used for convenience of expression, and should not be construed as limiting the embodiments of the present utility model, and the following embodiments are not described one by one.

The terms of direction and position in the present utility model, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "top", "bottom", "side", etc., refer only to the direction or position of the drawing. Accordingly, directional and positional terms are used to illustrate and understand the utility model and are not intended to limit the scope of the utility model.

As shown in fig. 1 to 4, an embodiment of the present utility model is provided:

the utility model provides a vertical single-stage centrifugal pump, includes the pump body 1 that has medium import 101 and medium export 102, pump body 1 upper end is connected with pump cover 2, pump cover 2 upper end is connected with vertical motor 3, vertical motor 3 is including drive shaft 31, the one end of drive shaft 31 passes pump cover 2 and stretches into pump body 1 and be connected with impeller 4, adopts closed impeller in this embodiment, efficient, this centrifugal pump still establishes at the outer protective housing 5 of vertical motor 3 including the cover, protective housing 5 lower extreme is provided with flange 51 and pump cover 2 bolted connection, easy dismounting, be convenient for motor maintenance and maintenance, protective housing 5 upper end is provided with arc top 52, and arc top unable ponding and a large amount of deposition, be provided with guide ring 53 in the middle of the arc top 52, the diameter of the upper shed 531 of guide ring 53 is less than the diameter of lower shed 532, makes hot-blast concentrated discharge, evenly be provided with a plurality of connecting rods 6 between guide ring 53 surface and the arc top 52 internal surface, adjacent connecting rods 6 and guide ring 53 external surface constitute air outlet 7 with the top 52 internal surface, can be avoided the equal air outlet 7 to follow the radial channel 7 to be connected with the arc top 7 with the fan housing 5, and can avoid the equal air outlet channel to be used for the fan outlet 8 to follow the arc top channel 8 to the air outlet along the radial channel 8, and the equal to the radial channel is suitable for the top 8 is provided with the top channel is equal to the outer channel 8, and is suitable for the air outlet 8 is used for the top channel is equal to the top channel to the top 8 and is used to the air outlet 8.

A mechanical seal 10 is arranged between the driving shaft 31 and the pump cover 2, the mechanical seal 10 can be sealed by a metal corrugated pipe, so that the leakage amount of a medium during rotation of the driving shaft 31 is reduced, and the operation stability of a motor is ensured; the driving shaft 31 above the mechanical seal 10 is provided with the water retaining ring 11, medium overflow and external sundries in the pump body 1 are prevented from entering the pump body 1, the service life of the centrifugal pump is prolonged, and a filter screen can be further arranged at the water inlet of the impeller 4, so that impurities and particles in liquid media are effectively filtered.

The pump body 1 is internally provided with a suction chamber 103, an impeller mounting chamber 104 and an extrusion chamber 105, the impeller 4 is arranged in the impeller mounting chamber 104, a groove 12 for embedding the lower part of the impeller 4 is formed at the communication part of the suction chamber 103 and the impeller mounting chamber 104, a rotary seal 16 is arranged between the groove 12 and the impeller 4, the rotary seal 16 adopts a rotary shaft seal, the coaxiality of the driving shaft 31 and the impeller 4 is improved, and the friction between the impeller 4 and the pump body 1 is reduced.

The pump body 1 corresponding to the impeller mounting chamber 104 is provided with the air discharge cock 13, and air in the pump body 1 is discharged through the air discharge cock 13 before the centrifugal pump is used, so that the centrifugal pump works more smoothly, the lower part of the suction chamber 103 is provided with the blow-down valve 14, impurities and particles in common media can be accumulated at the bottom of the suction chamber 103, and the blow-down valve 14 is arranged at the bottom of the suction chamber, so that the channel in the pump body 1 is convenient to clean.

The vertical motor 3 is provided with a steering mark 15, a visual window is arranged at the position, corresponding to the steering mark 15, of the protection shell 5, the steering of the motor can be rapidly identified, the assembly is convenient, the protection shell 5 is positioned at the lower side of the air outlet 8 and faces the vertical motor 3, the support part 54 is arranged on the vertical motor 3, the vertical motor 3 is more stable, meanwhile, hot air can be blocked from entering the lower part of the protection shell 5, and the hot air is immediately discharged from the air outlet 8; during assembly, the vertical motor 3 is fixed on the pump cover 2, the protection shell 5 is covered and fixed with the pump cover 2, the bottom of the pump body 1 is connected with the bottom plate 17, and the stability of the pump body 1 on the flat ground is improved.

The circumference outer wall of protection casing 5 sets up evenly is provided with a plurality of connection platform 19, evenly be provided with a plurality of connecting holes on the connection platform 19, connection platform 19 can external handle, the removal of centrifugal pump of being convenient for also can connect supporting support, lets the centrifugal pump can horizontal installation, and application scope is wide.

A metal winding gasket 20 is arranged between the pump cover 2 and the pump body 1, and the metal winding gasket 20 is formed by mutually and alternately overlapping and spirally winding high-quality SUS304 and graphite, so that the tightness in the pump body 1 is improved.

The foregoing disclosure is illustrative of the present utility model and is not to be construed as limiting the scope of the utility model, which is defined by the appended claims.

Claims

1. The utility model provides a vertical single-stage centrifugal pump, includes pump body (1) that has medium import (101) and medium export (102), pump body (1) upper end is connected with pump cover (2), pump cover (2) upper end is connected with vertical motor (3), vertical motor (3) are including drive shaft (31), pump cover (2) are passed to one end of drive shaft (31) stretches into pump body (1) and is connected with impeller (4), characterized in that, still including cover establish at the outer protective housing (5) of vertical motor (3), protective housing (5) lower extreme is provided with flange (51) and pump cover (2) bolted connection, and its upper end is provided with arc top (52), be provided with guide ring (53) in the middle of the arc top (52), the diameter of upper opening (531) of guide ring (53) is less than the diameter of lower opening (532), evenly be provided with a plurality of connecting ribs (6) between guide ring (53) surface and the internal surface of arc top (52), adjacent connecting rib (6) and guide ring (53) and guide ring (52) internal surface evenly are provided with a plurality of connecting ribs (7) between the external surface and the arc top (52) and the internal air outlet (7) of arc top (7) and the equal air outlet (8) of arc top (7), an arc-shaped convex edge (9) is arranged above the air outlet (8).

2. A vertical single-stage centrifugal pump according to claim 1, characterized in that a mechanical seal (10) is arranged between the drive shaft (31) and the pump cover (2), and a water stop ring (11) is arranged on the drive shaft (31) above the mechanical seal (10).

3. A vertical single-stage centrifugal pump according to claim 1, wherein a suction chamber (103), an impeller mounting chamber (104) and an extrusion chamber (105) are arranged in the pump body (1), the impeller (4) is arranged in the impeller mounting chamber (104), a groove (12) for embedding the lower part of the impeller (4) is arranged at the communication position of the suction chamber (103) and the impeller mounting chamber (104), and a rotary seal (16) is arranged between the groove (12) and the impeller (4).

4. A vertical single-stage centrifugal pump according to claim 3, wherein the pump body (1) corresponding to the impeller mounting chamber (104) is provided with a deflation cock (13), and the lower part of the suction chamber (103) is provided with a drain valve (14).

5. The vertical single-stage centrifugal pump according to claim 1, wherein the vertical motor (3) is provided with a turning sign (15), a visible window is arranged at the position of the protection shell (5) corresponding to the turning sign (15), a supporting part (54) is arranged on the lower side of the protection shell (5) at the air outlet (8) towards the vertical motor (3), and a bottom plate (17) is connected to the bottom of the pump body (1).

6. A vertical single-stage centrifugal pump according to claim 1, wherein the circumferential outer wall of the protective housing (5) is provided with a plurality of connection platforms (19) uniformly, and the connection platforms (19) are provided with a plurality of connection holes uniformly.

7. A vertical single-stage centrifugal pump according to claim 1, characterized in that a metal winding gasket (20) is arranged between the pump cover (2) and the pump body (1).