CN-224228884-U - Light permanent magnet synchronous axial flow pump

CN224228884UCN 224228884 UCN224228884 UCN 224228884UCN-224228884-U

Abstract

The utility model provides a light permanent magnet synchronous axial flow pump which comprises a motor shell, a water inlet flange and a pump shell, wherein the motor shell is internally provided with a permanent magnet synchronous motor, the water inlet flange is provided with a water inlet channel, the pump shell is provided with a water outlet, the motor shell is fixedly connected with the water inlet flange, the water inlet flange is fixedly connected with the pump shell, a rotating shaft of the permanent magnet synchronous motor is connected with an impeller, the impeller is positioned in an inner cavity of the pump shell, the space between the impeller and the water inlet flange is defined by the impeller, the space between the impeller and the water inlet flange forms a water outlet channel, the light permanent magnet synchronous axial flow pump further comprises a sealing cone, the sealing cone is fixedly connected with one end, close to the impeller, of the motor shell, the inner cavity space of the sealing cone accommodates the rotating shaft, an engine oil sealing structure and a water sealing structure, and the engine oil sealing structure are sleeved on the rotating shaft, and the height of the sealing cone is required not to be contacted with the impeller after the sealing cone is installed in place. The light permanent magnet synchronous axial flow pump has light weight and large lift, and meets the use requirement.

Inventors

ZHANG LI

Assignees

随州市瑞科机电有限公司

Dates

Publication Date: 20260512
Application Date: 20250616

Claims (7)

1. The utility model provides a synchronous axial-flow pump of light-weight permanent magnetism, includes the motor casing of built-in PMSM, the water inlet flange of taking the passageway of intaking, the pump case of taking the mouth of a river that from bottom to top set gradually, motor casing and water inlet flange fixed connection, water inlet flange and pump case fixed connection, PMSM's pivot is connected with the impeller, the impeller is in the pump case inner chamber, with the impeller as the world, the space between impeller to the water inlet flange has formed the passageway of intaking, the space between impeller to the delivery port has formed the passageway of delivering water, characterized by still includes sealed cone, fixed connection in the motor casing is close to the one end of impeller, sealed cone's inner chamber space holds pivot and cover are established epaxial engine oil seal structure and water seal structure, sealed cone's altitude requirement is in its place after contactless the impeller.
2. The pump of claim 1, wherein the cross-sectional area of the water outlet channel is gradually reduced from large to small.
3. The pump of claim 2, wherein the space between the impeller and the water outlet forms an axial section of the water outlet channel, and the contour line is divided into left and right axially symmetrical sections, and each section is a curve section.
4. A lightweight permanent magnet synchronous axial flow pump as defined in claim 3, wherein the curve section is divided into a first straight line section, a second straight line section and a third straight line section in sequence from the farthest position from the water outlet end, and smooth transition is realized among the straight line sections.
5. A lightweight permanent magnet synchronous axial flow pump as defined in claim 3, wherein the curve section is divided into a first elliptical section or a first circular arc section, a second circular arc section or a second straight line section and a third circular arc section or a third quadratic curve section sequentially from the farthest position from the water outlet end, and the sections are in smooth transition.
6. A lightweight permanent magnet synchronous axial flow pump according to claim 1, wherein the taper of the seal cone is 5 ° -15 °.
7. The light-weight permanent magnet synchronous axial flow pump according to claim 1 or 2, further comprising a filter screen cover, wherein the filter screen cover comprises a left cover body and a right cover body, the left cover body and the right cover body are bilaterally symmetrical and are fixed through screws, and therefore the filter screen cover surrounds the water inlet flange.

Description

Light permanent magnet synchronous axial flow pump Technical Field The utility model relates to the technical field of permanent magnet flood prevention and drainage water pumps, in particular to a light-weight permanent magnet synchronous axial flow pump. Background An axial flow pump is a pump in which liquid is transported in an axial direction by an urging force of a blade of a rotating impeller to the liquid. The axial flow pump comprises a motor casing of the built-in permanent magnet synchronous motor, a water inlet flange with a water inlet channel and a pump casing with a water outlet, which are sequentially arranged from bottom to top, wherein the motor casing is fixedly connected with the water inlet flange, the water inlet flange is fixedly connected with the pump casing, the tail end of a rotating shaft of the permanent magnet synchronous motor is connected with an impeller, the impeller is positioned in an inner cavity of the pump casing, the impeller is taken as a boundary, a space between the impeller and the water inlet flange forms the water inlet channel, a space between the impeller and the water outlet forms the water outlet channel, and a filter screen cover is arranged on the periphery of the water inlet flange. Because the axial-flow pump is in use, wholly sunk in the water, the permanent magnet synchronous motor rotating shaft needs to be sealed in the cylindrical motor shell by the sealing structure, so that the length of the cylinder of the motor shell is obviously increased, the weight of the motor shell is obviously increased, and the floating permanent magnet synchronous axial-flow pump is disclosed in patent number 202121595028.6. Furthermore, the pump shell with the water outlet is cylindrical, the water outlet has short lift, and the use requirement of large lift cannot be met. Disclosure of utility model The utility model aims to solve the technical problem of providing a light permanent magnet synchronous axial flow pump, which can reduce the weight of the axial flow pump, and the structure of the space between an impeller and a water outlet is improved to obviously increase the lift of water. In order to solve the technical problems, the technical scheme of the utility model is as follows: The utility model provides a synchronous axial-flow pump of light-weight permanent magnetism, includes from bottom to top sets gradually built-in permanent magnet synchronous motor's motor casing, takes the flange of intaking of water inlet channel, takes the pump case of water outlet, motor casing and flange fixed connection that intakes, flange and pump case fixed connection intaking, permanent magnet synchronous motor's pivot is connected with the impeller, the impeller is in the pump case inner chamber, regard the impeller as the world, the space between impeller to the flange of intaking has formed the water inlet channel, the space between impeller to the delivery port has formed the water outlet channel, still includes sealed cone, fixed connection in the motor casing is close to the one end of impeller, sealed cone's inner chamber space holds pivot and cover are established pivot epaxial engine oil seal structure and water seal structure, sealed cone's altitude requirement is in its installation back contactless the impeller. In one possible embodiment, the space between the impeller and the water outlet forms a cross-sectional area of the water outlet channel which gradually decreases from large to small. In one possible implementation, the outline of the axial section of the water outlet channel formed by the space between the impeller and the water outlet in the inner cavity of the pump shell is divided into a left section and a right section which are axisymmetric, and each section is a curve section. In one possible embodiment, the curve section is divided into a first straight line section, a second straight line section and a third straight line section in sequence from the farthest position from the water outlet end, and the straight line sections are in smooth transition. In one possible embodiment, the curve section is divided into a first elliptical section or a first circular arc section, a second circular arc section or a second straight line section and a third circular arc section or a third quadratic curve section in sequence from the farthest position from the water outlet end, and the sections are in smooth transition. In one possible embodiment, the taper of the seal cone is 5 ° -15 °. In one possible implementation manner, the water inlet flange is further provided with a filtering net cover, the filtering net cover comprises a left cover body and a right cover body, the left cover body and the right cover body are bilaterally symmetrical and are fixed through screws, and therefore the water inlet flange is surrounded. The beneficial effects of the utility model are as follows: Compared with the prior art, the light permanent magnet synchronous axial flow pum