CN210484178U

CN210484178U - Combined guide vane type pump

Info

Publication number: CN210484178U
Application number: CN201920750354.6U
Authority: CN
Inventors: 余学军; 聂葵; 何群林; 毛泓; 彭兆静; 成立平; 卢加兴; 曾永忠
Original assignee: Hunan Miluojiang Pump Making Co ltd; Hunan Mechanical and Electrical Polytechnic
Current assignee: Hunan Miluojiang Pump Making Co ltd; Hunan Mechanical and Electrical Polytechnic
Priority date: 2019-05-23
Filing date: 2019-05-23
Publication date: 2020-05-08
Anticipated expiration: 2029-05-23

Abstract

A combined guide vane type pump comprises a water pump impeller, a radial guide vane and an impeller chamber, wherein a space guide vane body is arranged behind the radial guide vane, an annular flow channel is arranged on the space guide vane body, the space guide vane is arranged in the flow channel, and the inlet design of the space guide vane is matched with the outlet liquid flow of the radial guide vane. A sealing ring is arranged between the impeller and the space guide vane body, the sealing ring is fixed on the space guide vane body, and the material strength and the hardness of the sealing ring are lower than those of the impeller. The utility model discloses can make impeller and space guide vane body direct contact not, and let and rub between impeller and the sealing ring, the sealing ring destroys the change because of intensity and hardness are lower and rub to protect the life of impeller and space guide vane body.

Description

Combined guide vane type pump

Technical Field

The utility model belongs to the technical field of the water pump, in particular to combination guide vane type pump.

Background

The guide vane is an important type of a pumping chamber of the water pump, and is widely applied to the water pump. Most of common sectional multi-stage pumps, long-shaft pumps, space guide vane centrifugal pumps, diagonal flow pumps, well pumps and axial flow pumps adopt guide vane type pumping chambers. The existing guide vane is divided into a radial guide vane and a space guide vane. As for the runner type guide vane, the positive guide vane and the negative guide vane of the radial guide vane are directly connected to form a single small runner, and the media of each runner behind the positive guide vane are not mixed with each other. Radial stator, including runner formula stator, the medium in the stator radially flows out from one-level impeller export, radially flows in next stage impeller again, and axial distance is short, and mainly used festival segmentation centrifugal pump can reduce axial length because of the axial distance is short, improves the rotor rigidity, but also because the axial distance is short equally, turn radius when flowing to the turning vane from positive stator is little, and turning curvature is big, and local hydraulic loss is big, and water pump efficiency receives very big influence. The space guide vane has a large throat section area due to the structural problem, and is not suitable for the design of a low specific speed pump, so that the existing long-shaft pump, the space guide vane type centrifugal pump and the well pump which adopt the space guide vane have no lower specific speed, namely, the single-stage lift of the water pump is lower under the same flow and speed, the same lift needs more impeller stages compared with a sectional type multistage centrifugal pump, and the inclined flow pump and the axial flow pump are high specific speed pumps.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a combination guide vane type pump, overcome above-mentioned prior art's weak point.

The technical scheme of the utility model:

a combined guide vane type pump comprises a water pump impeller, a radial positive guide vane, a space guide vane body and a sealing ring between the impeller and the space guide vane body, wherein a space guide vane body is arranged behind the radial positive guide vane, an annular flow channel is arranged on the space guide vane body, a space guide vane is arranged in the flow channel, a medium enters the radial positive guide vane and the space guide vane body after coming out of the water pump impeller in sequence, and the inlet design of the space guide vane in the space guide vane body is matched with the outlet liquid flow of the radial guide vane. Therefore, the impeller and the space guide vane body are not in direct contact, friction is carried out between the impeller and the sealing ring, and the sealing ring is damaged and replaced due to friction caused by lower strength and hardness, so that the service lives of the impeller and the space guide vane body are prolonged.

Furthermore, a sealing ring is arranged between the impeller and the space guide vane body, the sealing ring is fixed on the space guide vane body, and the material strength and the hardness of the sealing ring are lower than those of the impeller. Therefore, the combined guide vane type pump has the characteristics that the sectional type centrifugal pump is higher than the single-stage lift of the space guide vane type centrifugal pump, has the structural characteristics of the space guide vane type pump, can axially feed water and axially discharge water, and can be manufactured into a well pump or other wet pit type pump structures.

Drawings

FIG. 1 is a prior art radial vane pump configuration;

FIG. 2 is a three-dimensional view of a prior art radial vane pump;

FIG. 3 is a prior art spatial vane pump configuration;

FIG. 4 is a three-dimensional view of a prior art air guide vane pump with the outer wall of the flow passage removed;

fig. 5 is a schematic structural view of a combined vane type pump of the present invention.

In the figure: the structure comprises an impeller 1, a radial positive guide vane 2, a radial reverse guide vane 3, a 4-segmental multistage pump middle section, a sealing ring 5, a space guide vane body 6 and a space guide vane 7.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

Fig. 5 shows a combined vane type pump, which includes a water pump impeller (1), a radial guide vane (2), a space guide vane body (6), and a seal ring (5) between the space guide vane body (6) and the impeller (1). The impeller (1) is a rotating part, medium energy is improved, and after the medium comes out of the impeller (1), the medium firstly passes through the radial positive guide vane (2) and then comes out of the space guide vane body (6). An annular flow channel is arranged on the space guide vane body (6), a space guide vane (7) is arranged in the flow channel, the space guide vane (7) can convert the tangential flow velocity kinetic energy of a medium coming out of the radial guide vane (2) into pressure energy, and the inlet design of the space guide vane in the space guide vane body is matched with the outlet liquid flow of the radial guide vane. As the medium passes through the radial positive guide vane (2) after coming out of the impeller (1), and the throat tongue of the pumping chamber is arranged at the inlet of the radial guide vane (2), the hydraulic performance of the water pump is the same as that of a sectional centrifugal pump, and the water pump can be designed into a low specific rotating speed pump, namely, the single-stage impeller head is much higher than that of the existing space guide vane type long shaft pump, space guide vane type centrifugal pump and well pump under the same flow and rotating speed. The medium passes through space guide vane body (6) again after radial positive stator (2), and radial back guide vane (3) of festival segmentation multistage pump is compared in space guide vane (7) in the space guide vane body (6), and its axial length is longer, and turning radius is big, the camber is little, can reduce the local resistance of turning department, promotes water pump hydraulic efficiency, and in addition, this combination guide vane formula pump has the structural feature of space guide vane formula pump, can axial intake axial go out water, probably make into well pump or other wet pot type pump structures.

In addition, a sealing ring (5) is arranged between the impeller (1) and the space guide vane body (6), the sealing ring (5) is fixed on the space guide vane body (6) and can prevent the impeller and the space guide vane body from directly contacting, the strength and hardness of the material of the sealing ring (5) are lower than those of the impeller (1), and when the impeller (1) and the sealing ring (5) are subjected to friction, the sealing ring (5) is damaged and replaced due to the lower strength and hardness, so that the service lives of the impeller (1) and the space guide vane body (6) are protected.

Claims

1. The utility model provides a combination guide vane formula pump, includes water pump impeller, radial positive stator, space guide vane body and impeller and space guide vane body between the sealing ring, its characterized in that: a space guide vane body is arranged behind the radial positive guide vane, an annular flow channel is arranged on the space guide vane body, and a space guide vane is arranged in the flow channel; the inlet design of the spatial guide vanes matches the radial guide vane outlet flow.

2. A combination vane pump as set forth in claim 1 wherein: a sealing ring is arranged between the impeller and the space guide vane body, the sealing ring is fixed on the space guide vane body, and the material strength and the hardness of the sealing ring are lower than those of the impeller.