A new type of pipeline hollow pump

Abstract

The utility model discloses a novel pipeline hollow pump, hollow motor rotating shaft can axial rotation be located in the inside of motor shell, motor stator coil fixedly arranged in the inner wall of motor shell, motor rotor coil is fixed in the outer wall of hollow motor rotating shaft, and the position of motor rotor coil and motor stator coil is opposite, the impeller rotating shaft can axial rotation be installed in centrifugal impeller shell, and one or more coaxial centrifugal impeller are fixed on the impeller rotating shaft along the axial, the front end of impeller rotating shaft is fixedly connected with the rear end of hollow motor rotating shaft, and the inside of hollow motor rotating shaft is communicated with the inside of centrifugal impeller shell. The utility model discloses a hollow motor rotating shaft can make fluid flow into the part of impeller from the inside of motor rotating shaft to reduce the turning loss of fluid effectively, and the utility model discloses motor part and impeller part are connected, can effectively reduce the volume of pipeline pump to be suitable for more different installation space.

Description

Technical Field

[0001] This utility model relates to the field of pipeline pump technology, specifically to a novel hollow pipeline pump. Background Technology

[0002] Traditional pipeline pumps employ a centrifugal impeller and a conventional motor (with the motor having a solid core). The impeller's rotating shaft and the motor shaft are coaxial. Because the motor's shaft has a solid core, fluid cannot flow directly through it; instead, it must detour around the motor, resulting in fluid detour losses. Furthermore, in terms of spatial structure, the motor is located outside the fluid pipeline, which can restrict installation in confined spaces. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the present invention aims to provide a new type of hollow pipeline pump.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A novel hollow inline pump includes a hollow motor shaft, a motor stator coil, a motor rotor coil, a motor housing, a centrifugal impeller, an impeller shaft, and a centrifugal impeller housing. The hollow motor shaft is rotatably mounted inside the motor housing. The motor stator coil is fixed to the inner wall of the motor housing, and the motor rotor coil is fixed to the outer wall of the hollow motor shaft. The motor rotor coil and the motor stator coil are positioned opposite each other. The impeller shaft is rotatably mounted inside the centrifugal impeller housing, and one or more coaxial centrifugal impellers are fixedly mounted on the impeller shaft along the axial direction. The front end of the impeller shaft is fixedly connected to the rear end of the hollow motor shaft. The interior of the hollow motor shaft is connected to the interior of the centrifugal impeller housing.

[0006] Furthermore, the front and rear ends of the hollow motor shaft are respectively connected to the inner rings of the front bearing and the rear bearing of the motor shaft, and the outer rings of the front bearing and the rear bearing of the motor shaft are respectively installed and fixed in matching bearing chambers in the inner walls of the front flange and the rear flange of the motor; the front flange and the rear flange of the motor are respectively fixed to the front and rear ends of the motor housing.

[0007] Furthermore, the inner wall of the motor housing is provided with an inner hole, and the motor stator coil is installed in the inner hole by an interference fit.

[0008] Furthermore, a connector is fixedly connected to the front end of the impeller rotating shaft. The connector is axially rotatable inside the centrifugal impeller housing, and the connector is fixedly connected to the rear end of the hollow motor rotating shaft by a tenon joint.

[0009] Furthermore, the rear end of the connector is installed on the inner ring of the front bearing of the impeller shaft and is supported by the front bearing of the impeller shaft for rotation. The rear end of the impeller shaft is installed on the inner ring of the rear bearing of the impeller shaft. The front bearing and the rear bearing are respectively fixed in matching bearing chambers on the inner walls of the motor rear flange and the impeller rear flange. The motor rear flange and the impeller rear flange are respectively fixed to the front end and the rear end of the centrifugal impeller housing.

[0010] Furthermore, the front end of the motor front flange and the rear end of the centrifugal impeller housing are respectively connected to the pipeline pump inlet flange and the pipeline pump outlet flange.

[0011] The beneficial effects of this utility model are as follows: by using a hollow motor shaft, the fluid can flow from the inside of the motor shaft into the impeller, thereby effectively reducing the fluid's bend loss. Moreover, in this utility model, the motor part and the impeller part are connected end to end, which can effectively reduce the volume of the pipeline pump, thus making it suitable for more different installation spaces. Attached Figure Description

[0012] Figure 1 This is a cross-sectional schematic diagram of the novel hollow pump in a pipeline according to an embodiment of this utility model. Detailed Implementation

[0013] The present invention will be further described below with reference to the accompanying drawings. It should be noted that this embodiment is based on the present technical solution and provides detailed implementation methods and specific operation processes, but the protection scope of the present invention is not limited to this embodiment.

[0014] This embodiment provides a novel hollow pipe pump, such as Figure 1 As shown, the device includes a hollow motor shaft 1, a motor stator coil 4, a motor rotor coil, a motor housing 5, a centrifugal impeller 11, an impeller shaft 12, and a centrifugal impeller housing 16. The hollow motor shaft 1 is rotatably disposed inside the motor housing 5. The motor stator coil 4 is fixedly disposed on the inner wall of the motor housing 5, and the motor rotor coil is fixed to the outer wall of the hollow motor shaft 1. The motor rotor coil and the motor stator coil 4 are positioned opposite each other. The impeller shaft 12 is rotatably mounted inside the centrifugal impeller housing 16, and one or more coaxial centrifugal impellers 11 are fixedly disposed on the impeller shaft 12 along the axial direction. The front end of the impeller shaft 12 is fixedly connected to the rear end of the hollow motor shaft 1. The interior of the hollow motor shaft 1 is connected to the interior of the centrifugal impeller housing 16.

[0015] In this embodiment, the motor stator coil 4 is connected to an external power source via the motor power lead 10.

[0016] In this embodiment, the front end and rear end of the hollow motor shaft 1 are respectively connected to the inner rings of the front bearing 2 and the rear bearing 3 of the motor shaft. The outer rings of the front bearing 2 and the rear bearing 3 of the motor shaft are respectively installed and fixed in the matching bearing chambers in the inner walls of the front flange 8 and the rear flange 7 of the motor. The front flange 8 and the rear flange 7 of the motor are respectively fixed to the front end and the rear end of the motor housing 5 (which can be fixed by threaded connection).

[0017] The front bearing 2 and rear bearing 3 of the motor shaft can form the support for the front and rear ends of the hollow motor shaft 1. By setting bearing chambers in the inner walls of the front flange 8 and the rear flange 7 of the motor, and installing and fixing the outer rings of the front bearing 2 and the rear bearing 3 of the motor shaft in the bearing chambers in the inner walls of the front flange 8 and the rear flange 7 of the motor, a fluid barrier and sealing structure can be formed to ensure that the fluid can only flow into the interior of the hollow motor shaft 1.

[0018] In this embodiment, the inner wall of the motor housing 5 is provided with an inner hole, and the motor stator coil 4 is installed in the inner hole by an interference fit.

[0019] In this embodiment, a connector 15 is fixedly connected to the front end of the impeller rotating shaft 12 (it can be connected in various ways such as threaded connection, interference fit, key connection structure, square transmission structure, etc.). The connector 15 is axially rotatable inside the centrifugal impeller housing 16, and the connector 15 is fixedly connected to the rear end of the hollow motor rotating shaft 1 by a tenon joint. More specifically, in this embodiment, the front end of the connector 15 is provided with a forward-protruding tenon, and the rear end of the hollow motor rotating shaft 1 is provided with a matching mortise and tenon joint, and the tenon and mortise and tenon joint are tenoned together.

[0020] Furthermore, in this embodiment, the rear end of the connector 15 is installed on the inner ring of the impeller shaft front bearing 13 and is supported by the impeller shaft front bearing 13 for rotation. The rear end of the impeller shaft 12 is installed on the inner ring of the impeller shaft rear bearing 14. The impeller shaft front bearing 13 and the impeller shaft rear bearing 14 are respectively fixed in matching bearing chambers on the inner walls of the motor rear flange 7 and the impeller rear flange 19. The motor rear flange 7 and the impeller rear flange 19 are respectively fixed to the front end and the rear end of the centrifugal impeller housing 16 (which can be fixed by threaded connection).

[0021] It should be noted that the front and rear parts of the motor rear flange 7 are respectively provided with bearing chambers to accommodate the motor shaft rear bearing 3 and the impeller shaft front bearing 13. The impeller shaft front bearing 13 and the impeller shaft rear bearing 14 form the support for the impeller rotating shaft 12.

[0022] In this embodiment, the front end of the motor front flange 8 and the rear end of the centrifugal impeller housing 16 are respectively connected to the inlet flange 9 and the outlet flange 20 of the pipeline pump. Specifically, in this embodiment, the inlet flange 9 of the pipeline pump is fixedly installed to the front end of the motor front flange with screws, and the outlet flange 20 of the pipeline pump is connected to the rear end of the centrifugal impeller housing 16 by a threaded connection.

[0023] During operation, the stator coil of the motor is energized to generate a magnetic field. Under the influence of this magnetic field, the stator coil generates an induced current, which drives the hollow motor shaft 1 to rotate axially. The hollow motor shaft 1 further drives the impeller shaft 12 to rotate axially, which in turn drives the centrifugal impeller 11 to rotate axially, driving the fluid to flow from front to back. After entering through the inlet flange 9 of the pipeline pump, the fluid passes through the interior of the hollow motor shaft 1 and then enters the interior of the centrifugal impeller housing 16. Driven by the centrifugal impeller 11, the fluid is output from the outlet flange 20 of the pipeline pump.

[0024] For those skilled in the art, various corresponding changes and modifications can be made based on the above technical solutions and concepts, and all such changes and modifications should be included within the protection scope of the claims of this utility model.

Claims

1. A novel hollow pipe pump, characterized in that, The device includes a hollow motor shaft, a motor stator coil, a motor rotor coil, a motor housing, a centrifugal impeller, an impeller shaft, and a centrifugal impeller housing. The hollow motor shaft is rotatably mounted inside the motor housing. The motor stator coil is fixed to the inner wall of the motor housing, and the motor rotor coil is fixed to the outer wall of the hollow motor shaft. The motor rotor coil and the motor stator coil are positioned opposite each other. The impeller shaft is rotatably mounted inside the centrifugal impeller housing, and one or more coaxial centrifugal impellers are fixedly mounted on the impeller shaft along the axial direction. The front end of the impeller shaft is fixedly connected to the rear end of the hollow motor shaft. The interior of the hollow motor shaft is connected to the interior of the centrifugal impeller housing.

2. The novel hollow pipe pump according to claim 1, characterized in that, The front and rear ends of the hollow motor shaft are respectively connected to the inner rings of the front and rear bearings of the motor shaft. The outer rings of the front and rear bearings of the motor shaft are respectively installed and fixed in matching bearing chambers in the inner walls of the front and rear flanges of the motor. The front and rear flanges of the motor are respectively fixed to the front and rear ends of the motor housing.

3. The novel hollow pipe pump according to claim 1, characterized in that, The inner wall of the motor housing has an inner hole, and the motor stator coil is installed in the inner hole by interference fit.

4. The novel hollow pipe pump according to claim 1, characterized in that, A connector is fixedly connected to the front end of the impeller rotating shaft. The connector is axially rotatable inside the centrifugal impeller housing, and the connector is fixedly connected to the rear end of the hollow motor rotating shaft by tenon joint.

5. The novel hollow pipeline pump according to claim 2, characterized in that, The rear end of the connector is installed on the inner ring of the front bearing of the impeller shaft and is supported by the front bearing of the impeller shaft for rotation. The rear end of the impeller shaft is installed on the inner ring of the rear bearing of the impeller shaft. The front bearing and the rear bearing are respectively fixed in matching bearing chambers on the inner walls of the motor rear flange and the impeller rear flange. The motor rear flange and the impeller rear flange are respectively fixed to the front end and the rear end of the centrifugal impeller housing.

6. The novel hollow pipeline pump according to claim 5, characterized in that, The front end of the motor front flange and the rear end of the centrifugal impeller housing are respectively connected to the pipeline pump inlet flange and the pipeline pump outlet flange.

Images