CN211852184U

CN211852184U - Easy-to-maintain multistage centrifugal pump

Info

Publication number: CN211852184U
Application number: CN202020276084.2U
Authority: CN
Inventors: 刘俊玲
Original assignee: Guangdong Zhongde Technology Pump Co ltd
Current assignee: Guangdong Zhongde Technology Pump Co ltd
Priority date: 2020-03-09
Filing date: 2020-03-09
Publication date: 2020-11-03
Anticipated expiration: 2030-03-09

Abstract

The utility model discloses an easy-to-maintain multistage centrifugal pump, which comprises a base, a pump body and a motor, wherein the pump body comprises a rear shell, a rotating shaft, an impeller and a front shell, the impeller is provided with a plurality of groups, the impeller is arranged on the rotating shaft, one end of the rotating shaft penetrates through the rear shell, the other end of the rotating shaft is rotationally connected on the front shell, the front shell is connected with the rear shell through a bolt, an output shaft of the motor is connected with a shaft coupling, the other end of the shaft coupling is connected with the rotating shaft, the rotating shaft is arranged in the pump body, the base is provided with a shaft coupling support frame and a motor support frame, the motor is arranged on the motor support frame, the utility model discloses a pump shell which is composed of the front shell and the rear shell, when maintenance is needed, the front shell can be directly, the front shell and the rear shell are good in sealing effect.

Description

Easy-to-maintain multistage centrifugal pump

Technical Field

The utility model relates to a centrifugal pump, in particular to easy-to-maintain multistage centrifugal pump belongs to centrifugal pump technical field.

Background

The centrifugal pump is a pump for conveying a liquid by centrifugal force generated when an impeller rotates. The centrifugal pump has various forms such as vertical type, horizontal type, single stage, multistage, single suction, double suction, self suction and the like. Centrifugal pumps operate by causing water to move centrifugally as a result of the rotation of an impeller. Before the water pump is started, the pump shell and the water suction pipe are filled with water, then the motor is started, the pump shaft drives the impeller and the water to rotate at a high speed, the water is thrown to the outer edge of the impeller to be thrown into a water pressure pipeline of the water pump through a flow channel of the volute-shaped pump shell. The multistage centrifugal pump integrates more than two centrifugal pumps with the same function, and the fluid channel structure is characterized in that a medium pressure relief opening of a first stage is communicated with an inlet of a second stage, and a medium pressure relief opening of the second stage is communicated with an inlet of a third stage, so that the multistage centrifugal pump is formed by a mechanism connected in series.

The centrifugal pump needs to be maintained regularly after being used for a long time, the existing multi-stage centrifugal pump is inconvenient to overhaul and maintain, and when liquid is conveyed, the impeller which rotates quickly is easily damaged by particles or garbage in the liquid. We have therefore developed this and propose a multi-stage centrifugal pump which is easy to maintain.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an easy multistage centrifugal pump of maintaining to the centrifugal pump that proposes in solving above-mentioned background art needs regularly to maintain after long-time use, and current multistage centrifugal pump is very inconvenient when overhauing and maintaining, and when carrying liquid, produces the problem of destruction because granule or rubbish in the liquid easily, to quick pivoted impeller.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an easy multistage centrifugal pump of maintaining, includes base, the pump body and motor, the pump body includes back casing, axis of rotation, impeller and procapsid, the impeller is equipped with the multiunit, and impeller mounting is in the axis of rotation, the one end of axis of rotation runs through the back casing, the other end of axis of rotation rotates and connects on the procapsid, pass through bolted connection between procapsid and the back casing, the output shaft coupling of motor, the axis of rotation is connected to the other end of coupling, in the pump body was arranged in to the axis of rotation, be equipped with coupling support frame and motor support frame on the base, the motor is installed on the motor support frame, the coupling is placed on the coupling support frame, the back casing utilizes the supporting shoe to be connected.

As an optimal technical scheme of the utility model, the linking department of back casing and procapsid all is equipped with flange, the bolt runs through the flange of back casing and procapsid.

As a preferred technical scheme of the utility model, the inner wall that the procapsid is located the opening part is equipped with the inner ring, back casing and the fixed back inner ring of procapsid and back shells inner wall contact, be equipped with the insert ring on the back casing, be equipped with assorted grafting annular on the procapsid, the insert ring is arranged in the grafting annular.

As an optimized technical scheme of the utility model, be equipped with the filter on the water inlet.

As the utility model discloses a preferred technical scheme, the filter is including rotating cover, connecting cylinder and filter screen, it connects on the connecting cylinder to rotate cover threaded connection, the connecting cylinder is fixed on the water inlet, install the filter screen in the connecting cylinder

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model relates to an easy multistage centrifugal pump of maintaining, through adopting the pump body back casing, axis of rotation, impeller and procapsid to constitute, utilize procapsid and back casing to constitute the pump case during the use, when needs are maintained, can directly demolish the procapsid, it is simple convenient, and the equipment of procapsid and back casing utilizes the inner ring and inserts two sets of seal structure of ring for the procapsid is sealed effectual with the back casing.

2. The utility model relates to an easy multistage centrifugal pump of maintaining sets up the filter through the water inlet department at the pump body to adopt mutual threaded connection's rotation cover and connecting cylinder with the filter, and set up the filter screen in the connecting cylinder, during the use, rubbish in usable filter screen filtration aquatic is avoided during rubbish is drawn into the impeller, produces wearing and tearing to the impeller, is favorable to improving life.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

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

FIG. 3 is a schematic view of the filter of the present invention;

fig. 4 is an enlarged schematic view of the a position of the present invention.

In the figure: 1. a base; 2. a pump body; 3. a coupler support frame; 4. a motor; 5. a motor support frame; 6. a coupling; 7. a water outlet; 8. a water inlet; 9. a filter; 10. a rear housing; 11. a rotating shaft; 12. an impeller; 13. a front housing; 14. a rotating cover; 15. a connecting cylinder; 16. a filter screen; 17. an inner ring; 18. an insert ring; 19. a bolt; 20. and connecting the flanges.

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

Referring to fig. 1-4, the utility model provides an easy-to-maintain multistage centrifugal pump, including base 1, pump body 2 and motor 4, pump body 2 includes rear housing 10, axis of rotation 11, impeller 12 and front housing 13, impeller 12 is equipped with the multiunit, and impeller 12 installs on axis of rotation 11, one end of axis of rotation 11 runs through rear housing 10, the other end of axis of rotation 11 rotates and connects on front housing 13, connect through bolt 19 between front housing 13 and rear housing 10, the output shaft coupling 6 of motor 4, the other end of coupling 6 connects axis of rotation 11, axis of rotation 11 is arranged in pump body 2, be equipped with coupling support frame 3 and motor support frame 5 on base 1, motor 4 installs on motor support frame 5, coupling 6 is placed on coupling support frame 3, rear housing 10 utilizes the supporting shoe to be connected with base 1, and a water outlet 7 and a water inlet 8 are arranged on the pump body 2.

Preferably, a connecting flange 20 is provided at the junction between the rear housing 10 and the front housing 13, the bolts 19 penetrate through the connecting flanges 20 of the rear housing 10 and the front housing 13, and the rear housing 10 and the front housing 13 are connected by the connecting flanges 20.

Preferably, the inner wall that procapsid 13 is located the opening part is equipped with inner ring 17, inner ring 17 and the contact of back casing 10 inner wall after back casing 10 and procapsid 13 are fixed, be equipped with insert ring 18 on the back casing 10, be equipped with assorted grafting annular on the procapsid 13, insert in the ring 18 arranges the grafting annular in, during the installation, inner ring 17 in the procapsid 13 insert back casing 10 in and with the inner wall in close contact with of back casing 10, the insert ring 18 of back casing 10 inserts in the grafting annular of procapsid 13, insert and make back casing 10 and procapsid 13 connect closely under the effect of ring 18 and inner ring 17.

Preferably, the water inlet 8 is provided with the filter 9, the filter 9 is added, the pump body 2 can be effectively protected, and the service life is prolonged.

Preferably, the filter 9 includes rotating cover 14, connecting cylinder 15 and filter screen 16, rotating cover 14 threaded connection on connecting cylinder 15, connecting cylinder 15 is fixed on water inlet 8, install filter screen 16 in the connecting cylinder 15, utilize filter screen 16 to filter the impurity in the aquatic, can effectual protection pump body 2.

When in specific use, the utility model relates to an easy-to-maintain multistage centrifugal pump, because the pump body 2 adopts the back shell 10, the axis of rotation 11, the impeller 12, the procapsid 13 isotructure is constituteed, during the use, align the flange 20 of procapsid 13 with the flange 20 of back shell 10, then insert bolt 19 in the flange 20 of procapsid 13 and back shell 10, inner ring 17 in procapsid 13 inserts in the back shell 10 and closely contacts with the inner wall of back shell 10 this moment, insert in the grafting annular of procapsid 13 of insert ring 18 of back shell 10, make back shell 10 and procapsid 13 connect closely, when needing to maintain the pump body 2 inside, can separate procapsid 13 and back shell 10, make the inside situation of pump body 2 leak naked, maintenance and maintenance are more convenient and easy this moment, wherein because the rotating cover 14 threaded connection in the filter 9 is on the connecting cylinder 15 of delivery port 7 department, and set up filter screen 16 in connecting cylinder 15 for the multistage centrifugal pump is at the water absorption in-process, can filter the water source that water inlet 8 goes out, avoid aquatic rubbish to enter into high-speed rotatory pump body 2, produce destruction and wearing and tearing to quick pivoted impeller 12, increase behind the filter 9, can effectual protection impeller 12, improve the life of the pump body 2, wherein owing to adopt external mode with the shaft coupling 6 that is used for being connected between axis of rotation 11 and the motor 4, be convenient for the later stage with motor 4 and shaft coupling separation, so that maintain motor 4.

In the description of the present invention, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

In the present invention, unless otherwise explicitly specified or limited, for example, it may be fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an easy multistage centrifugal pump who maintains, includes base (1), the pump body (2) and motor (4), its characterized in that, the pump body (2) is including back casing (10), axis of rotation (11), impeller (12) and procapsid (13), impeller (12) are equipped with the multiunit, and impeller (12) install on axis of rotation (11), back casing (10) are run through to the one end of axis of rotation (11), the other end of axis of rotation (11) rotates to be connected on procapsid (13), connect through bolt (19) between procapsid (13) and back casing (10), the output shaft coupling (6) of motor (4), axis of rotation (11) is connected to the other end of coupling (6), axis of rotation (11) are arranged in pump body (2), be equipped with coupling support frame (3) and motor support frame (5) on base (1), the motor (4) is installed on the motor support frame (5), the coupler (6) is placed on the coupler support frame (3), the rear shell (10) is connected with the base (1) through the supporting block, and the pump body (2) is provided with a water outlet (7) and a water inlet (8).

2. An easy-to-maintain multistage centrifugal pump according to claim 1, characterized in that: and the joint of the rear shell (10) and the front shell (13) is provided with a connecting flange (20), and the bolts (19) penetrate through the connecting flange (20) of the rear shell (10) and the front shell (13).

3. An easy-to-maintain multistage centrifugal pump according to claim 1, characterized in that: the inner wall that procapsid (13) are located the opening part is equipped with inner ring (17), inner ring (17) and back casing (10) inner wall contact after back casing (10) are fixed with procapsid (13), be equipped with insert ring (18) on back casing (10), be equipped with assorted grafting annular on procapsid (13), insert ring (18) are arranged in the grafting annular.

4. An easy-to-maintain multistage centrifugal pump according to claim 1, characterized in that: and a filter (9) is arranged on the water inlet (8).

5. An easy-to-maintain multistage centrifugal pump according to claim 4, characterized in that: filter (9) are including rotating cover (14), connecting cylinder (15) and filter screen (16), it on connecting cylinder (15) to rotate cover (14) threaded connection, connecting cylinder (15) are fixed on water inlet (8), install filter screen (16) in connecting cylinder (15).