CN217633084U

CN217633084U - Immersion type circulating pump with long service life

Info

Publication number: CN217633084U
Application number: CN202221466477.5U
Authority: CN
Inventors: 施勇
Original assignee: Changzhou Luorui Electric Appliance Co ltd
Current assignee: Changzhou Luorui Electric Appliance Co ltd
Priority date: 2022-06-13
Filing date: 2022-06-13
Publication date: 2022-10-21
Anticipated expiration: 2032-06-13

Abstract

The utility model relates to the technical field of fluid machinery, especially, relate to a long service life's immersion circulating pump, the test platform comprises a support, including a motor, an end plate, a pump cover, the filter screen, the front end impeller, middle section impeller and impeller footpath shell, the internally mounted of frame has the motor, the output shaft of motor is fixed with the main shaft through the shaft coupling, the front end of frame is equipped with the end plate that is used for spiro union installation pump cover, the outer tip that the main shaft runs through the end plate is installed and is located the front end impeller of pump cover, the main shaft is located the impeller chamber of end plate rear side and is installed the middle section impeller, impeller footpath shell, the end plate is located the main shaft and runs through the department and installs the bearing seal, the inlet has been seted up down to the end plate, the liquid outlet has been seted up at the middle part of frame. The utility model adopts a lower water inlet mode, and is additionally provided with the shaft seal, so that only micro bubbles can be generated, and the micro bubbles can be broken by themselves, the impeller is prevented from being damaged, and the service life is prolonged; meanwhile, when the liquid level is reduced, normal liquid suction can be ensured.

Description

Immersion type circulating pump with long service life

Technical Field

The utility model relates to the technical field of fluid machinery, especially, relate to a long service life's immersion circulating pump.

Background

The vertical multistage centrifugal pump is a centrifugal pump with compact integral structure, small volume, light weight, low noise and obvious energy-saving effect, and is convenient to maintain, a standard vertical motor and a quick-mounting mechanical seal are adopted, the replacement is very convenient, the overflowing part of the pump is made of stainless steel materials and can be suitable for slightly corrosive media, when the motor drives the impeller on the shaft to rotate at high speed, liquid filled in the impeller is thrown to the periphery of the impeller from the center of the impeller along a flow channel between blades under the action of centrifugal force, the pressure and the speed are simultaneously increased due to the effect of the blades, and the liquid is guided to the next-level impeller through the flow channel of the guide shell, so that the principle is that the liquid flows through all the impellers and the guide shell one by one, and the pressure energy of the liquid is further increased.

The conventional immersion type circulation pump shown in fig. 1 is water-feeding manner: the water pump adopts into water, installs the front end impeller b on main shaft a and is open impeller, and when being located the work of front end impeller b in pump cover c and absorbing water, thereby liquid can be in water inlet d department backward flow gassing, and the lower bubble that produces of liquid level is more, and then fragile impeller shortens life. Therefore, the structure thereof needs to be improved optimally.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the above-mentioned problem that exists among the prior art, provide a long service life's immersion circulating pump.

In order to realize the technical purpose, the technical effect is achieved, the utility model discloses a realize through following technical scheme:

the utility model provides a long service life's immersion circulating pump, includes frame, motor, main shaft, end plate, pump cover, filter screen, front end impeller, middle section impeller and impeller footpath shell, the internally mounted of frame has the motor, the motor is dual output shaft motor, and the output shaft of its one end is fixed with the main shaft through the shaft coupling, the front end of frame is equipped with the end plate that is used for spiro union installation pump cover, the main shaft runs through the outer tip of end plate and installs the front end impeller that is located the pump cover, the pump cover is located the front side embedding of closed impeller and installs the filter screen, the main shaft is located the impeller room of end plate rear side and installs a plurality of middle section impellers and establish the impeller footpath shell in its outside, the end plate is located the main shaft and runs through the department and installs the bearing seal, the end plate is located and is close to the edge and offers the lower inlet with impeller room front side domain intercommunication, the liquid outlet has been seted up at the middle part of frame, the liquid outlet passes through drain passageway and impeller room's rear side domain intercommunication.

Further, in the immersion type circulating pump with long service life, the output shaft at the other end of the motor is fixed with a heat dissipation shaft through a coupler, and the outer end of the heat dissipation shaft is provided with a heat dissipation fan.

Furthermore, in the immersion type circulating pump with long service life, part of the seat body of the machine seat is immersed into the liquid to be extracted, and the liquid outlet and the heat dissipation fan are positioned outside the liquid level of the liquid to be extracted.

Furthermore, in the immersion type circulating pump with long service life, a safety protective cover is arranged on the outer side of the heat dissipation fan on the base.

Further, in the immersion type circulating pump with long service life, the front-end impeller is a closed impeller, and the middle-section impeller is a semi-open impeller.

Further, in the above described submerged circulation pump having a long service life, the impeller radial casings are mounted with a seal ring therebetween for improving sealing performance.

The utility model has the advantages that:

the utility model has the advantages of reasonable design, it designs front end impeller into closed impeller, adopts the mode of intaking down, and the end plate is located the main shaft and runs through the department and installs the bearing seal simultaneously, can realize only that the trace bubble produces through this kind of mode to can break out by oneself, avoid damaging the impeller, increase of service life; meanwhile, when the liquid level is reduced, normal liquid suction can be ensured.

Of course, it is not necessary for any product to achieve all of the above advantages simultaneously in practicing the invention.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic diagram of a conventional immersion type circulating pump in the prior art;

FIG. 2 is a schematic overall structure of the present invention;

FIG. 3 is an enlarged view of the front portion of the present invention;

fig. 4 is an enlarged schematic view of the rear part of the present invention;

FIG. 5 is a schematic view of the water inlet mode of the present invention;

in the drawings, the components represented by the respective reference numerals are listed below:

the device comprises a base 1, a motor 2, a main shaft 3, an end plate 4, a pump cover 5, a filter screen 6, a front-end impeller 7, a shaft seal 8, a lower liquid inlet 9, a liquid outlet 10, a middle-section impeller 11, an impeller radial shell 12, a heat dissipation shaft 13, a heat dissipation fan 14, an impeller chamber 15 and a liquid guide channel 16.

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 of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 2-5, the present embodiment provides a long-life immersion type circulation pump, which includes a base 1, a motor 2, a main shaft 3, an end plate 4, a pump cover 5, a filter screen 6, a front end impeller 7, a middle impeller 11, and an impeller radial shell 12.

In this embodiment, a motor 2 is installed inside the base 1, the motor 2 is a dual-output-shaft motor, and a spindle 3 is fixed to an output shaft at one end of the motor through a coupling. The front end of frame 1 is equipped with the end plate 4 that is used for spiro union installation pump cover 4, and the outward flange of end plate 4 is equipped with the external screw thread, and pump cover 4 is equipped with rather than complex internal thread. The outer end part of the main shaft 3 penetrating the end plate 4 is provided with a front end impeller 7 positioned in the pump cover 5, and the front side of the closed impeller 7 of the pump cover 5 is embedded with a filter screen 6.

In this embodiment, a plurality of middle-section impellers 11 and an impeller radial shell 12 sleeved outside the middle-section impellers are installed in an impeller chamber 15 of the main shaft 3 located at the rear side of the end plate 4, the end plate 4 is located at a penetrating position of the main shaft 3 and is provided with a shaft seal 8, and a lower liquid inlet 9 communicated with the front area of the impeller chamber 15 is arranged at a position close to the edge of the end plate 4. A liquid outlet 10 is arranged in the middle of the machine base 1, and the liquid outlet 10 is communicated with the rear side area of the impeller chamber 15 through a liquid guide channel 16.

In this embodiment, the output shaft at the other end of the motor 2 is fixed with a heat dissipation shaft 13 through a coupling, and the outer end of the heat dissipation shaft 13 is provided with a heat dissipation fan 14. Part of the base body of the base 1 is immersed into the liquid to be extracted, and the liquid outlet and the heat dissipation fan are positioned outside the liquid level of the liquid to be extracted. The machine base is provided with a safety shield at the outer side of the heat radiation fan.

In this embodiment, the front-end impeller 7 is a closed impeller, and the middle-section impeller 11 is a semi-open impeller. The impeller diameter shells 12 are fitted with a seal ring therebetween for improving sealability.

One specific application of this embodiment is: the structure of the embodiment is reasonable in design, the front-end impeller 7 is designed into a closed impeller, a downward water inlet mode is adopted, and the shaft seal 8 is arranged at the penetrating position of the end plate 4 on the main shaft 3, so that only micro bubbles can be generated and can be destroyed by self, the middle-section impeller is prevented from being damaged, and the service life is prolonged; meanwhile, when the liquid level is reduced, normal liquid suction can be ensured.

The preferred embodiments of the present invention disclosed above are only advantageous to help illustrate the present invention. The preferred embodiments are not exhaustive and do not limit the invention to the precise embodiments. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a long service life's immersion circulating pump which characterized in that: including frame, motor, main shaft, end plate, pump cover, filter screen, front end impeller, middle section impeller and the impeller footpath shell, the internally mounted of frame has the motor, the motor is dual output shaft motor, and the output shaft of its one end is fixed with the main shaft through the shaft coupling, the front end of frame is equipped with the end plate that is used for spiro union installation pump cover, the main shaft runs through the outer tip of end plate and installs the front end impeller that is located the pump cover, the pump cover is located the front side embedding of closed impeller and installs the filter screen, the main shaft is located the impeller room of end plate rear side and installs a plurality of middle section impellers and cover and establish the impeller footpath shell in its outside, the end plate is located the main shaft and runs through the department and installs the bearing seal, the end plate is located to be close to the edge and sets up the lower inlet with impeller room front side regional intercommunication, the liquid outlet has been seted up at the middle part of frame, the liquid outlet passes through drain passageway and the rear side regional intercommunication of impeller room.

2. The long-life immersion pump of claim 1, wherein: the output shaft of the other end of the motor is fixed with a heat dissipation shaft through a coupler, and the outer end of the heat dissipation shaft is provided with a heat dissipation fan.

3. The long-life immersion pump according to claim 2, characterized in that: part of the seat body of the machine seat is immersed into the liquid to be extracted, and the liquid outlet and the heat dissipation fan are positioned outside the liquid level of the liquid to be extracted.

4. The long-life immersion pump according to claim 2, characterized in that: and the machine base is positioned on the outer side of the heat dissipation fan and is provided with a safety protection cover.

5. The long-life immersion circulating pump of claim 1, wherein: the front-end impeller is a closed impeller, and the middle-section impeller is a semi-open impeller.

6. The long-life immersion pump of claim 1, wherein: and a sealing ring for improving the sealing property is arranged between the impeller radial shells.