CN212643075U

CN212643075U - Sewage pump

Info

Publication number: CN212643075U
Application number: CN202021608135.3U
Authority: CN
Inventors: 傅永江
Original assignee: Zhuji Tianhao Environmental Protection Equipment Co ltd
Current assignee: Zhuji Tianhao Environmental Protection Equipment Co ltd
Priority date: 2020-08-05
Filing date: 2020-08-05
Publication date: 2021-03-02
Anticipated expiration: 2030-08-05

Abstract

The utility model discloses a sewage pump, including motor, main shaft, cutting wheel, impeller and spiral case, the main shaft is installed on the motor, impeller and cutting wheel are all installed on the main shaft, the spiral case includes integrated into one piece's base and diameter enlargement portion, the impeller is located the diameter enlargement portion, the cutting wheel is located the base, sewage pump still includes the cutting ring of fixed mounting, sets up spaced axial recess on the inner wall of this cutting ring, each axial recess runs through the upper and lower terminal surface of cutting ring, and forms the cutting bead between each adjacent axial recess, and this cutting bead is close to the cutting wheel; the cutting ring and the cutting wheel are concentrically arranged and are opposite in the positive direction. The utility model discloses install the cutting ring in the base inner wall to the inner wall that will cut the ring sets to and forms the cockscomb structure by a plurality of cutting beads, through the cooperation with the cutting wheel, has greatly increased cutting efficiency, thereby has reduced the risk of jam.

Description

Sewage pump

Technical Field

The utility model relates to a sewage treatment device, in particular to a sewage pump for preventing blockage.

Background

In the field of urban sewage conveying and treatment, a sewage pump is commonly used to enable sewage to obtain mechanical energy for overcoming viscous resistance in the process of conveying, and the urban sewage often contains some fibers which are wound or bunched differently or larger granular impurities, so that the sewage pump can be blocked in the conveying process to enable the sewage pump to work normally, and the conveying progress of the sewage is influenced; seriously burning out the motor of the sewage pump and shortening the service life of the sewage pump.

The existing sewage pump generally comprises a motor and a main shaft, wherein the lower end of the main shaft is respectively provided with an impeller and a cutting wheel, and when the sewage pump is used, sewage and impurities are firstly cut by the cutting wheel and then are pumped by centrifugal force generated by the impeller. The cutting wheel is usually lower in cutting efficiency when cutting at present, can not reduce the jam of impurity to the sewage pump very effectively, prevents blockking up the effect poor.

SUMMERY OF THE UTILITY MODEL

The utility model provides a sewage pump, the cutting inefficiency that prior art exists is overcome to its purpose, the easy problem of blockking up of sewage pump.

In order to achieve the purpose, the utility model provides a technical scheme as follows:

a sewage pump comprises a motor, a main shaft, a cutting wheel, an impeller and a volute, wherein the main shaft is arranged on the motor, the impeller and the cutting wheel are both arranged on the main shaft, the cutting wheel is positioned at the lower end of the main shaft, and the impeller is positioned right above the cutting wheel; the volute comprises a base and a diameter amplification part which are integrally formed, the impeller is positioned in the diameter amplification part, the cutting wheel is positioned in the base, the sewage pump further comprises a cutting ring which is fixedly installed, axial grooves which are mutually spaced are formed in the inner wall of the cutting ring, each axial groove penetrates through the upper end surface and the lower end surface of the cutting ring, a cutting convex edge is formed between every two adjacent axial grooves, and the cutting convex edge is close to the cutting wheel; the cutting ring and the cutting wheel are concentrically arranged and are opposite in the positive direction.

In a preferred embodiment, the cutting ridges are evenly distributed on the inner wall of the cutting ring.

In a preferred embodiment, the cross-section of each axial groove is semi-circular.

In a recommended embodiment, the lower end of the inner wall of the base is provided with an annular upper mounting groove; the sewage pump further comprises an assembly ring, the assembly ring is fixedly installed at the bottom of the base, a lower annular installation groove is formed in the upper end of the inner wall of the assembly ring, the upper installation groove and the lower installation groove are matched to form a complete installation groove, and the cutting ring is clamped in the installation groove.

In a preferred embodiment, the mounting ring and the base are fixed by bolts.

In a recommended embodiment, the sewage pump further comprises a pipe body, an upper cover, a lower cover, an upper impeller, a connecting pipe, a water outlet pipe and a top cover, wherein the motor is installed in the pipe body; the upper cover and the lower cover are respectively and fixedly arranged at the upper end and the lower end of the pipe body; the upper end of the diameter enlargement part is fixedly connected with the lower cover, an impeller cavity is formed between the diameter enlargement part and the lower cover, and the impeller is positioned in the impeller cavity; the lower end of the top cover is fixedly connected with the upper cover, and an upper impeller cavity is formed between the top cover and the upper cover; the upper end of the main shaft penetrates through the upper cover, the upper impeller is arranged at the upper end of the main shaft and is positioned in the upper impeller cavity, one end of the connecting pipe is communicated with the impeller cavity, and the other end of the connecting pipe is communicated with the upper impeller cavity; the water outlet pipe is communicated with the impeller cavity. The utility model discloses set up impeller and impeller respectively at the upper and lower both ends of main shaft, the cavity intercommunication that rethread connecting pipe will go up impeller and locate, rivers pass through the supreme impeller cavity of impeller pump sending, and the pump sending of going up the impeller again can make the sewage pump obtain bigger pressure and lift.

According to the above-mentioned right the utility model discloses a description can know, the advantage of the utility model lies in:

the utility model discloses install the cutting ring in the base inner wall to the inner wall that will cut the ring sets to and forms the cockscomb structure by a plurality of cutting beads, through the cooperation with the cutting wheel, has greatly increased cutting efficiency, thereby has reduced the risk of jam.

Drawings

Fig. 1 is a schematic cross-sectional structure diagram of the first embodiment.

Fig. 2 is a schematic view of the cutting ring of fig. 1 with the cutting ring removed.

Fig. 3 is a schematic structural diagram of the cutting wheel and the cutting ring.

Fig. 4 is a schematic cross-sectional structure diagram of the second embodiment.

Fig. 5 is a schematic overall structure diagram of the second embodiment.

Detailed Description

For further understanding of the present invention, the present invention will be described in detail with reference to the following examples, which are provided for illustration of the present invention but are not intended to limit the scope of the present invention.

Example one

Referring to fig. 1, a sewage pump includes a motor 1, a main shaft 2, a cutting wheel 3 (provided with cutting blades thereon for cutting impurities), an impeller 4 and a volute 5, wherein the main shaft 2 is mounted on the motor 1, the impeller 4 and the cutting wheel 3 are both mounted on the main shaft 2, the cutting wheel 3 is located at the lower end of the main shaft 2, and the impeller 4 is located right above the cutting wheel 3; the volute 5 comprises a base 51 and an enlarged diameter portion 52 which are integrally formed, the impeller 4 is positioned in the enlarged diameter portion 52, and the cutting wheel 3 is positioned in the base 51.

Referring to fig. 3, the sewage pump further comprises a cutting ring 6 fixedly installed, axial grooves 61 are formed in the inner wall of the cutting ring 6 at intervals, the cross section of each axial groove 61 is semicircular and penetrates through the upper end face and the lower end face of the cutting ring 6, a cutting convex rib 62 is formed between every two adjacent axial grooves 61, and the cutting convex ribs 62 are uniformly distributed on the inner wall of the cutting ring 6.

Referring to fig. 2, the lower end of the inner wall of the base 51 is provided with an annular upper mounting groove 53; the sewage pump further comprises an assembling ring 7, the assembling ring 7 is fixedly installed at the bottom of the base 51, a lower annular installing groove 71 is formed in the upper end of the inner wall of the assembling ring 7, the upper installing groove 53 and the lower installing groove 71 are matched to form a complete installing groove 70, and the cutting ring 6 is clamped in the installing groove 70. In the preferred embodiment, the mounting ring 7 and the base 51 are secured by bolts 72. After the cutting ring 6 is installed, the cutting convex edge 62 is close to the cutting wheel 3; and the cutting ring 6 and the cutting wheel 3 are concentrically mounted and diametrically opposed.

The utility model discloses to cut ring 6 and install in base 51 inner wall to the inner wall that will cut ring 6 sets to and forms the cockscomb structure by a plurality of cutting beads 62, through the cooperation with cutting wheel 3, has greatly increased cutting efficiency, thereby has reduced the risk of jam.

Example two

Referring to fig. 4 and 5, the second embodiment is substantially the same as the first embodiment, and mainly differs in that the sewage pump further includes a pipe body 1a, an upper cover 2a, a lower cover 3a, an upper impeller 4a, a connecting pipe 5a, a water outlet pipe 6a, and a top cover 7a, and the motor 1 is installed in the pipe body 1 a; the upper cover 2a and the lower cover 3a are respectively and fixedly arranged at the upper end and the lower end of the tube body 1 a; the upper end of the enlarged diameter part 52 is fixedly connected with the lower cover 3a, an impeller cavity 8a is formed between the enlarged diameter part 52 and the lower cover 3a, and the impeller 4 is positioned in the impeller cavity 8 a; the lower end of the top cover 7a is fixedly connected with the upper cover 2a, and an upper impeller cavity 8b is formed between the top cover 7a and the upper cover 2 a. The upper end of the main shaft 2 penetrates through the upper cover 2a, the upper impeller 4a is installed at the upper end of the main shaft 2 and is located in the upper impeller cavity 8a, one end of the connecting pipe 5a is communicated with the impeller cavity 8a, and the other end of the connecting pipe is communicated with the impeller cavity 8 b. The water outlet pipe 6a is communicated with the impeller cavity 8 b. The utility model discloses set up impeller 4a and impeller 4 respectively at the upper and lower both ends of main shaft 2, rethread connecting pipe 5a will go up the cavity intercommunication that impeller 4a and impeller 4 located, rivers pass through the supreme impeller cavity 8b of impeller 4 pump sending, and the pump sending of passing through impeller 4a again can make the sewage pump obtain bigger pressure and lift.

The present invention has been described in detail with reference to the embodiments, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A sewage pump comprises a motor, a main shaft, a cutting wheel, an impeller and a volute, wherein the main shaft is arranged on the motor, the impeller and the cutting wheel are both arranged on the main shaft, the cutting wheel is positioned at the lower end of the main shaft, and the impeller is positioned right above the cutting wheel; the volute comprises an integrally formed base and a diameter enlarging part, the impeller is positioned in the diameter enlarging part, the cutting wheel is positioned in the base, and the volute is characterized in that: the sewage pump also comprises a fixedly installed cutting ring, axial grooves which are mutually spaced are formed in the inner wall of the cutting ring, each axial groove penetrates through the upper end surface and the lower end surface of the cutting ring, a cutting convex edge is formed between every two adjacent axial grooves, and the cutting convex edge is close to the cutting wheel; the cutting ring and the cutting wheel are concentrically arranged and are opposite in the positive direction.

2. The sewage pump of claim 1, further comprising: the cutting convex ribs are uniformly distributed on the inner wall of the cutting circular ring.

3. The sewage pump of claim 2, further comprising: the cross section of each axial groove is semicircular.

4. The sewage pump of claim 3, further comprising: the lower end of the inner wall of the base is provided with an annular upper mounting groove; the sewage pump further comprises an assembly ring, the assembly ring is fixedly installed at the bottom of the base, a lower annular installation groove is formed in the upper end of the inner wall of the assembly ring, the upper installation groove and the lower installation groove are matched to form a complete installation groove, and the cutting ring is clamped in the installation groove.

5. The sewage pump of claim 4, wherein: the assembling ring and the base are fixed through bolts.

6. The sewage pump of claim 1, further comprising: the sewage pump also comprises a pipe body, an upper cover, a lower cover, an upper impeller, a connecting pipe, a water outlet pipe and a top cover, wherein the motor is arranged in the pipe body; the upper cover and the lower cover are respectively and fixedly arranged at the upper end and the lower end of the pipe body; the upper end of the diameter enlargement part is fixedly connected with the lower cover, an impeller cavity is formed between the diameter enlargement part and the lower cover, and the impeller is positioned in the impeller cavity; the lower end of the top cover is fixedly connected with the upper cover, and an upper impeller cavity is formed between the top cover and the upper cover; the upper end of the main shaft penetrates through the upper cover, the upper impeller is arranged at the upper end of the main shaft and is positioned in the upper impeller cavity, one end of the connecting pipe is communicated with the impeller cavity, and the other end of the connecting pipe is communicated with the upper impeller cavity; the water outlet pipe is communicated with the impeller cavity.