CN219932503U

CN219932503U - Centrifugal pump

Info

Publication number: CN219932503U
Application number: CN202321390166.XU
Authority: CN
Inventors: 乔凯杰
Original assignee: Zhejiang Ouwo Pump Industry Manufacturing Co ltd
Current assignee: Zhejiang Ouwo Pump Industry Manufacturing Co ltd
Priority date: 2023-06-01
Filing date: 2023-06-01
Publication date: 2023-10-31
Anticipated expiration: 2033-06-01

Abstract

The utility model provides a centrifugal pump, which belongs to the technical field of pumps, and comprises a volute and an impeller rotatably arranged in the volute, wherein the volute is provided with a medium outlet and a medium inlet, at least two cutting blades are arranged on the periphery of the inner wall of the medium inlet, a first cutting edge is arranged on two sides of the cutting blades along the axial direction of the medium inlet, and a second cutting edge is arranged on one side of the cutting blades facing the center of the medium inlet; according to the utility model, the plurality of cutting blades are arranged at the medium inlet, so that larger sundries entering the medium inlet can be cut, the impeller is prevented from being blocked by the sundries, the motor is prevented from being damaged, and the cutting efficiency is effectively improved by the three-side cutting edges.

Description

Centrifugal pump

Technical Field

The utility model relates to the technical field of pumps, in particular to a centrifugal pump.

Background

Pumps are machines that deliver or pressurize fluids. It transmits mechanical energy of the prime mover or other external energy to the liquid, causing the liquid to increase in energy. The pump is mainly used for conveying water, oil, acid-alkali liquor, emulsion, suspension emulsion, liquid metal and other liquids, and can also be used for conveying liquid and gas mixtures and liquids containing suspended solids. Pumps can be generally classified into three types, positive displacement pumps, power pumps and other types of pumps according to the principle of operation.

A centrifugal pump (centrifugal pump) is a pump that conveys liquid by centrifugal force generated when an impeller rotates. In the prior art, as disclosed in chinese patent publication No. CN1109825C, a high-speed centrifugal pump is disclosed, and if the centrifugal pump has a large volume of sundries entering the pump body from the medium inlet during the working process, the impeller is easy to be blocked, so that the centrifugal pump cannot work normally, and the driving motor is also likely to be damaged.

Disclosure of Invention

The utility model aims to overcome the defects and shortcomings of the prior art and provides a centrifugal pump.

The technical scheme adopted by the utility model is as follows: the utility model provides a centrifugal pump, includes the spiral case and rotates the impeller that sets up in the spiral case, the spiral case is provided with medium export and medium entry, medium entry department inner wall periphery is provided with two at least cutting pieces, the cutting piece all is provided with first blade in the both sides along medium entry axis direction, and one side that its orientation medium entry was central is provided with the second blade.

Two cutting pieces are arranged on the periphery of the inner wall of the medium inlet, and are distributed in a straight shape.

The spiral case bottom is provided with the supporting legs, the supporting legs is including four backup pads, be provided with the connection draw-in groove in the backup pad.

The end face of the volute, which is positioned at the medium inlet, is outwards extended to form a connecting flange, and at least six connecting through holes are uniformly formed in the connecting flange.

The outer wall of one side of the volute is provided with a boss, the boss is provided with a mounting plane, and the mounting plane is provided with a nameplate.

The device also comprises a volute cover connected with the volute, an impeller shaft connected with the impeller and a motor for driving the impeller to rotate.

The spiral case outer wall is provided with the strengthening rib along medium export to supporting legs direction.

The beneficial effects of the utility model are as follows: according to the utility model, the plurality of cutting blades are arranged at the medium inlet, so that larger sundries entering the medium inlet can be cut, the impeller is prevented from being blocked by the sundries, the motor is prevented from being damaged, and the cutting efficiency is effectively improved by the three-side cutting edges.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are required in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that it is within the scope of the utility model to one skilled in the art to obtain other drawings from these drawings without inventive faculty.

FIG. 1 is a schematic diagram of the present utility model;

FIG. 2 is a schematic view of a cutting blade according to the present utility model;

FIG. 3 is a second schematic diagram of the present utility model;

fig. 4 is a schematic diagram III of the present utility model.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings, for the purpose of making the objects, technical solutions and advantages of the present utility model more apparent.

It should be noted that, in the embodiments of the present utility model, all the expressions "first" and "second" are used to distinguish two entities with the same name but different entities or different parameters, and it is noted that the "first" and "second" are only used for convenience of expression, and should not be construed as limiting the embodiments of the present utility model, and the following embodiments are not described one by one.

The terms of direction and position in the present utility model, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "top", "bottom", "side", etc., refer only to the direction or position of the drawing. Accordingly, directional and positional terms are used to illustrate and understand the utility model and are not intended to limit the scope of the utility model.

As shown in fig. 1 to 4, an embodiment of the present utility model is provided:

the utility model provides a centrifugal pump, including spiral case 1 and rotation impeller 2 that sets up in spiral case 1, spiral case 1 is provided with medium export 3 and medium entry 4, medium entry 4 department inner wall periphery is provided with two at least cutting pieces 6, cutting piece 6 all is provided with first blade 621 in the both sides along medium entry 4 axis direction, and one side towards medium entry 4 center is provided with second blade 622, through being provided with a plurality of cutting pieces 6 in medium entry 4 departments, can cut the great debris in the medium entry 4 of getting into, avoids debris to block impeller 2, avoids the motor damage simultaneously, and the three side blade promotes cutting efficiency moreover.

The circumference of the inner wall of the medium inlet is provided with two cutting pieces 6, the two cutting pieces 6 are distributed in a straight shape, and if four cutting pieces 6 are arranged, the two cutting pieces 6 can be distributed in a cross shape.

The spiral case 1 bottom is provided with supporting legs 9, supporting legs 9 is including four backup pads 91, guarantees the stability of spiral case 1, be provided with the connection through-groove 92 on the backup pad 91, in this embodiment, the connection through-groove 92 is the U-shaped, adopts the connection through-groove 92 need not to unscrew the screw hole completely with the bolt when using bolted connection, only need with the bolt unscrewing, inserts the screw rod portion of bolt with connection through-groove 92, the installation of being convenient for.

The end face of the volute 1, which is positioned at the medium inlet 4, is outwards extended to form a connecting flange 10, at least six connecting through holes 11 are uniformly formed in the connecting flange 10, and meanwhile, the end face of the volute 1, which is positioned at the medium outlet 3, is outwards extended to form a connecting flange, so that the connection strength with a pipeline is improved.

The outer wall of one side of the volute 1 is provided with a boss 12, the boss 12 is provided with a mounting plane 121, and the mounting plane 121 is provided with a nameplate, so that a user can conveniently and rapidly read related information of the centrifugal pump.

The centrifugal pump also comprises a volute cover connected with the volute 1, an impeller shaft connected with the impeller 2 and a motor for driving the impeller 2 to rotate, and the structure of the impeller is the same as that of a conventional centrifugal pump in the prior art, and the details are not described.

The medium inlet 4 is provided with a connecting flange which is convenient to be connected with a pipeline quickly, and a reinforcing rib structure 14 is arranged between the connecting flange and the volute 1 to improve the strength of the connecting flange.

The outer wall of the volute 1 is provided with reinforcing ribs 101 along the direction from the medium outlet 3 to the supporting legs 9, and both sides of the volute 1 can be provided, so that the overall strength of the volute 1 is improved.

The foregoing disclosure is illustrative of the present utility model and is not to be construed as limiting the scope of the utility model, which is defined by the appended claims.

Claims

1. The utility model provides a centrifugal pump, including spiral case (1) and rotation impeller (2) that set up in spiral case (1), spiral case (1) are provided with medium export (3) and medium entry (4), a serial communication port, medium entry (4) department inner wall periphery is provided with two at least cutting pieces (6), cutting piece (6) all are provided with first blade (621) in the both sides along medium entry (4) axis direction, and one side towards medium entry (4) center is provided with second blade (622).

2. A centrifugal pump according to claim 1, wherein two cutting blades (6) are arranged circumferentially around the inner wall at the medium inlet, and wherein the two cutting blades (6) are arranged in a line.

3. Centrifugal pump according to claim 1, wherein the bottom of the volute (1) is provided with supporting feet (9), the supporting feet (9) comprise four supporting plates (91), and the supporting plates (91) are provided with connecting grooves (92).

4. Centrifugal pump according to claim 1, wherein the end face of the volute (1) at the medium inlet (4) is outwardly extended with a connecting flange (10), and wherein at least six connecting through holes (11) are uniformly provided in the connecting flange (10).

5. A centrifugal pump according to claim 1, wherein a boss (12) is arranged on the outer wall of one side of the volute (1), the boss (12) is provided with a mounting plane (121), and a nameplate is arranged on the mounting plane (121).

6. A centrifugal pump according to claim 1, further comprising a volute cover connected to the volute (1), an impeller shaft connected to the impeller (2), and a motor for driving the impeller (2) in rotation.

7. A centrifugal pump according to claim 3, wherein the outer wall of the volute (1) is provided with ribs (101) in the direction from the medium outlet (3) to the support feet (9).