CN218235500U

CN218235500U - Sewage pump

Info

Publication number: CN218235500U
Application number: CN202222835324.XU
Authority: CN
Inventors: 王晛; 贺平
Original assignee: GP Enterprises Co Ltd
Current assignee: GP Enterprises Co Ltd
Priority date: 2022-10-26
Filing date: 2022-10-26
Publication date: 2023-01-06
Anticipated expiration: 2032-10-26

Abstract

The utility model discloses a sewage pump includes: a motor; the volute is provided with a water inlet, a water outlet and an operation opening, and the motor is installed on the volute; the impeller is configured at the operation opening and is arranged on the rotating shaft of the motor, and the impeller comprises a wheel disc and a plurality of blades arranged on the wheel disc; wherein the blades are arranged relatively perpendicular to the surface of the wheel disc, and the blades are provided with smoothly bent arc-shaped structures on a plane perpendicular to the axis of the wheel disc; in the volute, the impeller is positioned right above the water inlet, and a flow channel for medium circulation is reserved between the impeller and the water inlet; the utility model discloses can solve because contain the fibre thing of easy winding or bunching in the medium of being transported, so the sewage pump of single blade or bilobed blade impeller structure is if meet and surpass the granule of water inlet size half or surpass 5 times long fiber and easily block up for sewage pump stop work causes the blowdown not smooth, brings inconvenience for city daily life.

Description

Sewage pump

Technical Field

The utility model relates to a water pumping plant technical field, concretely relates to sewage pump.

Background

The sewage pump is a kind of centrifugal impurity pump, and is a kind of pump product with pump and motor connected and submerged under liquid, and is mainly used for conveying medium containing fibre, paper scrap and other solid particles in city sewage, excrement and urine or liquid.

A sewage pump general impeller adopts a unique single-blade or double-blade impeller structure, can only effectively pass through fiber substances which are 5 times of the diameter of the pump and solid particles with the diameter of about 50 percent of the diameter of the pump, and the fiber or the solid which exceeds the range can easily block the impeller blade, so that the water pump can not output water. The conveyed medium contains fiber which is easy to wind or bunch, so the pump is easy to block, once the pump is blocked, the pump can not work normally, even the motor is burnt, thereby causing unsmooth sewage discharge and bringing inconvenience to daily life of cities.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above disadvantages, an object of the present invention is to provide a sewage pump.

In order to achieve the above purpose, the utility model discloses a technical scheme include:

a motor;

the volute is provided with a water inlet, a water outlet and an operation opening for installing a motor, and the motor is installed on the volute;

the impeller is configured at the operation opening and is arranged on the rotating shaft of the motor, and the impeller comprises a wheel disc and a plurality of blades arranged on the wheel disc;

wherein the blades are arranged relatively perpendicular to the surface of the wheel disc, and the blades are provided with smoothly bent arc-shaped structures on a plane perpendicular to the axis of the wheel disc;

and in the volute, the impeller is positioned right above the water inlet, and a flow channel for medium circulation is reserved between the impeller and the water inlet.

In a preferred embodiment of the above sewage pump, the arc-shaped structures on each of the blades have the same radius of curvature.

In a preferred technical scheme of the sewage pump, an inlet angle is formed between the ends, close to the axis of the wheel disc, of the adjacent blades, the inlet angle of each blade is 0-25 degrees, an outlet angle is formed between the ends, far away from the axis of the wheel disc, of the adjacent blades, and the outlet angle of each blade is 45-60 degrees.

In the preferable technical scheme of the sewage pump, the flow channel is 5-40cm in the height direction.

In a preferred embodiment of the above sewage pump, the bottom of the volute is downwardly concave with the water inlet as a center and has a smoothly curved cross-sectional shape.

In the preferable technical scheme of the sewage pump, a sealing groove is formed in the water outlet, and a connecting flange is mounted in the sealing groove through screws.

In the preferable technical scheme of the sewage pump, a sealing gasket is arranged between the sealing groove and the connecting flange.

In the preferable technical scheme of the sewage pump, a mechanical seal is mounted on the rotating shaft of the motor and is positioned between the motor and the impeller.

In a preferable technical scheme of the sewage pump, the motor is mounted on the volute through a bolt.

The beneficial effects of the utility model are that, through setting up in the spiral case in the runner that the confession medium flows in the spiral case between impeller and water inlet to realize that most is carried to the delivery port discharge under the effect of centrifugal force not through the blade by inspiratory sewage, the effectual sewage pump that has improved this application reduces the possibility that the blade was blockked up by the medium winding to big solid particle and fibrous material's clearance, just the sewage pump simple structure of this application, and the practicality is strong.

Drawings

FIG. 1 is a schematic view of a motor mounted on a volute;

FIG. 2 is a schematic view of a volute;

FIG. 3 is a schematic view of an impeller;

in the figure: the device comprises a motor 1, a volute 2, a water inlet 21, a water outlet 22, an operation opening 23, an impeller 3, a wheel disc 31, blades 32, a flow channel 4, an inlet angle 5, an outlet angle 6, a sealing groove 7, a screw 8, a connecting flange 9, a sealing washer 11, a mechanical seal 12 and a bolt 13.

Detailed Description

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.

It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "front", "rear", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "connected," and "connected" in the description of the present invention are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

As shown in fig. 1 to 3, a sewage pump of the present invention includes:

a motor 1;

a volute 2 having a water inlet 21 and a water outlet 22, and an operation opening 23 for mounting a motor 1, the motor 1 being mounted on the volute 2;

the impeller 3 is configured at the operation port 23 and is installed on the rotating shaft of the motor 1, and the impeller 3 comprises a wheel disc 31 and a plurality of blades 32 arranged on the wheel disc 31;

wherein the blades 32 are arranged relatively perpendicular to the surface of the disk 31, and the blades 32 have a smoothly curved arc-shaped structure on a plane perpendicular to the axis of the disk 31;

in the volute 2, the impeller 3 is located right above the water inlet 21, and a flow channel 4 for medium circulation is reserved between the impeller 3 and the water inlet 21.

Referring to fig. 2, the volute 2 has a water inlet 21, a water outlet 22 and an operation opening 23, the operation opening 23 and the water outlet 22 are both disposed at the upper portion of the volute 2, the water inlet 21 is disposed at the bottom of the volute 2, the water inlet 21 is located right below the operation opening 23, the water inlet 21 is located on the side portion of the operation opening 23 opposite to the volute 2, the operation opening 23 is used for mounting the motor 1 and the impeller 3, the aperture of the operation opening 23 is larger than the apertures of the water inlet 21 and the water outlet 22, and the water outlet 22 is used for connecting a water outlet pipe.

Referring to fig. 1, a motor 1 is installed at the upper part of a volute 2, a rotating shaft of the motor 1 is located in an operation opening 23, an impeller 3 is installed on the rotating shaft of the motor 1 through threads, wherein the rotating shaft of the motor 1 is coaxial with the operation opening 23, the impeller 3 and a water inlet 21, a flow channel 4 for media to flow in the volute 2 is arranged between the impeller 3 and the water inlet 21 in the volute 2, and the flow channel 4 is communicated with a water outlet 22.

Referring to fig. 3, the impeller 3 includes a disk 31 and a plurality of blades 32 vertically mounted on the surface of the disk 31, the plurality of blades 32 are uniformly arranged on the surface of the disk 31 at the central axis of the disk 31, wherein the blades 32 have smoothly curved arc-shaped structures on a plane perpendicular to the central axis of the disk 31, the arc-shaped structures on each blade 32 are all obliquely arranged on the surface of the disk 31 towards the same direction, and the arc-shaped structures on each blade 32 are arranged at the same position.

The working principle is as follows: controlling the motor 1 to work, wherein the motor 1 drives the impeller 3 to rotate, sewage enters the volute 2 under the action of the impeller 3, and when the impeller 3 rotates, the energy of the sewage is increased under the action of centrifugal force, the sewage entering between the blades 32 through the inlet on one side of the central axis of the wheel disc 31 adjacent to the adjacent blades 32 is pushed by the blades 32 to rotate together with the wheel disc 31, so that the sewage in the middle of the impeller 3 forms a vortex flow, and under the action of the vortex flow, the sewage (containing solid particles and fibers) sucked through the water inlet 21 obtains energy to rotate continuously, so that most of the sucked sewage is conveyed to the water outlet 22 through the flow channel 4 without passing through the blades 32 under the action of the centrifugal force, and the aim of conveying complex media or fluids containing impurities is achieved, the sewage at the outlet on one side of the adjacent blades 32 far away from the central axis of the wheel disc 31 forms a ring flow due to the centrifugal force, the ring-flow sewage has a certain lift under the action of the centrifugal force, and flows to the water outlet 22 through the flow channel 4 and is discharged; this application is through setting up in volute 2 in the runner 4 that supplies the medium to flow in volute 2 between impeller 3 and water inlet 21 to realize that the overwhelming majority is carried to delivery port 22 under the effect of centrifugal force and discharges through blade 32 by inspiratory sewage, the effectual sewage pump that has improved this application is to the clearance of big solid particle and fibrous material, reduces the possibility that blade 32 is blockked up by the medium winding, and the sewage pump simple structure of this application, and the practicality is strong.

In one or more embodiments, the arc-like structures on each of the blades 32 have the same radius of curvature.

With reference to fig. 3, the centrifugal force obtained by the sewage at the outlet of the adjacent blades 32 on the side far from the central axis of the disk 31 is the same, i.e. a steady-state annular flow is formed, which facilitates the discharge of the sewage inside the volute 2.

In one or more embodiments, adjacent blades 32 have an entrance angle 5 between ends of blades 32 near the axis of disk 31, the entrance angle 5 of blades 32 is between 0 and 25 °, adjacent blades 32 have an exit angle 6 between ends of blades 32 away from the axis of disk 31, and the exit angle 6 of blades 32 is between 45 and 60 °.

Referring to fig. 3, when the inlet angle 5 is selected to be 25 °, the amount of sewage sucked between the adjacent blades 32 through the inlet angle 5 increases, and correspondingly, when the outlet angle 6 is selected to be 60 °, the sewage discharged through the outlet angle 6 reaches a maximum value, and by selecting the impellers 3 having different inlet angles 5 and outlet angles 6, the efficiency of the present application for effluent treatment is improved, the use of the sewage pump is more practical, and the application range of the present application is improved.

In one or more embodiments, the flow channel 4 is 5-40cm in height.

Referring to fig. 1, the height of the flow channel 4 is the height from the lower end of the blade 32 to the water inlet 21, the height of the flow channel 4 is preferably 20cm, the height of the flow channel 4 is selected according to the size of particles contained in sewage taken in and taken out by the impeller 3, when the particles contained in the sewage taken in and taken out by the impeller 3 are larger, the efficiency of the water pump is considered, the volute 2 with the height of the flow channel 4 of 25cm can be matched and selected, and when the particles contained in the sewage taken in and taken out by the impeller 3 are smaller, the volute 2 with the height of the flow channel 4 of 5cm can be matched and selected, so that the wide application range is achieved.

In one or more embodiments, the bottom of the volute 2 is concave downward centered on the water inlet 21 and has a smoothly curved cross-sectional shape.

Referring to fig. 1, the cross section of the bottom of the volute 2 at the water inlet 21 is approximately V-shaped, and correspondingly, the impeller 3 at the operation opening 23 is also arranged in V-shape; set up the effectual area of contact who has improved the inside solid particle of the eddy current that forms and the fibrous material in the middle part of impeller 3 through the aforesaid to increased the ability that solid particle and fibrous material pass through runner 4, and when the sewage pump stop work, the free fall of solid particle and fibrous material in the spiral case 2 of being convenient for prevents to deposit the accumulation in the pump chamber, blocks up impeller 3, possesses the practicality.

In one or more embodiments, a sealing groove 7 is formed at the water outlet 22, and a connecting flange 9 is installed in the sealing groove 7 through a screw 8.

Referring to fig. 2, the water outlet pipe is convenient to mount through the arrangement, and meanwhile, the sealing groove 7 is arranged, so that the stability of the internal pressure of the volute 2 is effectively guaranteed, and the sewage is convenient to discharge.

In one or more embodiments, a sealing gasket 11 is disposed between the sealing groove 7 and the attachment flange 9.

With the above arrangement, referring to fig. 2, the sealing between the connection flange 9 and the volute 2 is further improved.

In one or more embodiments, a mechanical seal 12 is mounted on the rotating shaft of the motor 1, and the mechanical seal 12 is located between the motor 1 and the impeller 3.

Referring to fig. 1, a mechanical seal 12 is a well-established technology, and the mechanical seal 12 is a shaft seal device which is kept attached by one or more pairs of end faces which slide relatively perpendicular to a shaft under the action of fluid pressure and the elastic force (or magnetic force) of a compensation mechanism and is matched with auxiliary seal to achieve leakage resistance; can avoid inside sewage gets into motor 1 through this kind of setting, extension motor 1 life.

In one or more embodiments, the motor 1 is mounted to the volute 2 by bolts 13. Through the setting, the motor 1 is conveniently detached from the volute 2, and the maintenance of parts in the volute 2 is facilitated.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the above embodiments is to let the person skilled in the art understand the contents of the present invention and implement the present invention, which can not limit the protection scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the protection scope of the present invention.

Claims

1. A sewage pump, comprising:

a motor;

the impeller is configured at the operating opening and is arranged on the rotating shaft of the motor, and the impeller comprises a wheel disc and a plurality of blades arranged on the wheel disc;

2. The waste water pump of claim 1, wherein: the arc-like structures on each of the blades have the same radius of curvature.

3. The sewage pump of claim 1, further comprising: an inlet angle is formed between the ends, close to the axis of the wheel disc, of the adjacent blades, the inlet angle of each blade is 0-25 degrees, an outlet angle is formed between the ends, far away from the axis of the wheel disc, of the adjacent blades, and the outlet angle of each blade is 45-60 degrees.

4. The sewage pump of claim 1, further comprising: the flow channel is 5-40cm in the height direction.

5. The waste water pump of claim 1, wherein: the bottom of the volute is downwards concave by taking the water inlet as a center and has a smoothly curved cross section shape.

6. The sewage pump of claim 1, further comprising: a sealing groove is formed in the water outlet, and a connecting flange is mounted in the sealing groove through screws.

7. The sewage pump of claim 6, wherein: and a sealing gasket is arranged between the sealing groove and the connecting flange.

8. The sewage pump of claim 1, further comprising: and a mechanical seal is arranged on the rotating shaft of the motor and is positioned between the motor and the impeller.

9. The sewage pump of claim 1, further comprising: the motor is mounted on the volute through bolts.