Base for submersible sewage pump

Abstract

The utility model discloses a base of submersible sewage pump, including body, cutter head and cutting knife, the body includes through -hole, and the cutter head includes upper cutter disc and lower cutter disc, and the upper cutter disc is arranged in the through -hole and is fixed with the body through bolt, and the upper cutter disc and lower cutter disc are connected through the connecting column, and the cutting knife is arranged between the upper cutter disc and lower cutter disc, and the upper cutter disc is equipped with the hole -through hole, and the connecting column is at least three and is along the axis of rotation symmetry of hole -through hole, and the hole -through hole is equipped with the connecting shaft fixed with the cutting knife, compared with prior art, the utility model can better handle the pollutant. For hard things such as stone, also can better intercept. The cutting knife is fixed with the connecting shaft through bolt, when installing cutting knife, first, the cutting knife is arranged between the upper cutter disc and lower cutter disc through the gap between two connecting columns, and the cutting knife is fixed with the connecting shaft through the hole -through hole.

Description

Technical Field

[0001] This utility model belongs to the field of sewage pump technology, specifically relating to a base for a submersible sewage pump. Background Technology

[0002] A sewage pump is a type of pump where the pump and motor are integrated and both operate submerged in liquid. Compared to general horizontal or vertical sewage pumps, sewage pumps are more compact and occupy less space. Submersible sewage pumps are particularly suitable for conveying liquids containing hard solids, fibrous materials, and especially dirty, viscous, or slippery liquids.

[0003] Submersible sewage pumps consist of a base, a pump body, an impeller housed within the pump body, and a drive structure that controls the impeller's rotation. Some submersible sewage pumps use cutting impellers, and the base is equipped with a cutter head and cutting blades. Through the combined action of the impeller, cutter head, and cutting blades, they can cut waste such as cloth, weeds, and plastic bags in the water, preventing the sewage pump from clogging. However, for situations with large amounts of waste, existing cutting impellers and cutter heads cannot guarantee cutting effectiveness. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, this utility model provides a base for a submersible sewage pump that can provide better cutting effect compared with the prior art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a base for a submersible sewage pump, comprising a body, a cutter disc, and a cutting blade. The body includes a through hole, and the cutter disc includes an upper cutter disc and a lower cutter disc. The upper cutter disc is disposed within the through hole and fixed to the body by bolts. The upper cutter disc and the lower cutter disc are connected by connecting columns. The cutting blade is disposed between the upper cutter disc and the lower cutter disc. The upper cutter disc has a through hole. There are at least three connecting columns that are rotationally symmetrical along the axis of the through hole. A connecting shaft fixed to the cutting blade passes through the through hole.

[0006] Compared with existing technologies, this invention can better treat pollutants using the above-described solution. It can also better intercept hard objects such as stones. The cutting blade is fixed to the connecting shaft with bolts. When installing the cutting blade, first place the cutting blade between the upper and lower cutter discs through the gap between the two connecting columns, and then fix the cutting blade to the connecting shaft that passes through the through hole.

[0007] As a further feature of this utility model, the upper cutter disc is provided with at least two upper hollows that are rotationally symmetrical along the axis of the through hole. The upper hollows are triangular in shape, and all three sides of the upper hollows are curved. The lower cutter disc is provided with at least two lower hollows that are rotationally supported along the axis of the through hole. The lower hollows are fan-shaped.

[0008] Using the above method can achieve better cutting results.

[0009] As a further feature of this invention, the lower cutter disc is provided with a mounting hole opposite to the through hole, and the diameter of the mounting hole is larger than the diameter of the through hole.

[0010] Using the above solution, the mounting holes facilitate fixing the cutting blade to the connecting shaft.

[0011] As a further feature of this invention, the outer diameters of the upper and lower cutter discs are the same, the number of lower hollows is the same as the number of connecting columns, and the connecting columns are located between the two lower hollows.

[0012] The above solution provides a more stable cutting effect.

[0013] As a further feature of this invention, a stepped surface is provided at the opening of the through hole, and the edge of the upper cutter head is limited by the stepped surface.

[0014] The above solution provides a better fixation effect, making the cutter head more stable.

[0015] As a further feature of this utility model, the outer edge of the upper blade disc is provided with at least three fixing parts, the stepped surface is provided with an embedding groove for the fixing parts to be embedded, the fixing part is provided with a fixing hole one, and the bottom of the embedding groove is provided with a fixing hole two opposite to the fixing hole one.

[0016] With the above solution, the bolts are inserted into fixing holes one and two, and the fit between the fixing part and the embedded groove facilitates the fixing of the cutter head to the body.

[0017] The present invention will now be further described with reference to the accompanying drawings. Attached Figure Description

[0018] Appendix Figure 1 This is a schematic diagram of the overall structure of a specific embodiment of the present utility model;

[0019] Appendix Figure 2 This is an overall sectional view of a specific embodiment of the present utility model;

[0020] Appendix Figure 3 This is a schematic diagram of the main body of a specific embodiment of the present utility model;

[0021] Appendix Figure 4 This is a schematic diagram of the cutter head according to a specific embodiment of the present invention.

[0022] Body 1, through hole 11, stepped surface 12, embedded groove 13, fixing hole 2 131, cutter head 2, upper cutter head 21, through hole 211, upper hollow 212, fixing part 213, fixing hole 1 2131, lower cutter head 22, lower hollow 221, mounting hole 222, connecting column 23, cutting blade 3, connecting shaft 4. Detailed Implementation

[0023] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] In the description of this utility model, it should be noted that, unless otherwise specified, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are used only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] Specific embodiments of this utility model are shown in the accompanying drawings.

[0026] A base for a submersible sewage pump includes a body 1, a cutter head 2, and a cutting blade 3. The body 1 includes a through hole 11. The cutter head 2 includes an upper cutter head 21 and a lower cutter head 22. The upper cutter head 21 is disposed within the through hole 11 and fixed to the body 1 by bolts. The upper cutter head 21 and the lower cutter head 22 are connected by connecting posts 23. The cutting blade 3 is disposed between the upper cutter head 21 and the lower cutter head 22. The upper cutter head 21 has a through hole 211. There are three connecting posts 23, which are rotationally symmetrical along the axis of the through hole 211. A connecting shaft 4, which is fixed to the cutting blade 3, passes through the through hole 211. Compared with the prior art, this embodiment can better treat pollutants. It can also better intercept hard objects such as stones. The cutting blade 3 is fixed to the connecting shaft 4 by bolts. When installing the cutting blade 3, first place the cutting blade 3 between the upper cutter head 21 and the lower cutter head 22 through the gap between the two connecting posts 23, and then fix the cutting blade 3 to the connecting shaft 4 passing through the through hole 211.

[0027] The upper cutter head 21 has three upper hollows 212 that are rotationally symmetrical along the axis of the through holes 211. The upper hollows 212 are triangular in shape, and all three sides of the upper hollows 212 are curved. The lower cutter head 22 has three lower hollows 221 that are rotatably supported along the axis of the through holes 211. The lower hollows 221 are fan-shaped. This design can achieve a better cutting effect.

[0028] The lower cutter head 22 is provided with a mounting hole 222 opposite to the through hole 211, and the diameter of the mounting hole 222 is larger than the diameter of the through hole 211. The mounting hole 222 facilitates fixing the cutting blade 3 to the connecting shaft 4.

[0029] The upper cutter head 21 and the lower cutter head 22 have the same outer diameter, and the number of lower cutters 221 is the same as the number of connecting posts 23. The connecting posts 23 are located between the two lower cutters 221. This provides a more stable cutting effect.

[0030] The opening of the through hole 11 is provided with a stepped surface 12, and the edge of the upper cutter head 21 is limited by the stepped surface 12. Four fixing parts 213 are provided on the outer edge of the upper cutter head 21. The stepped surface 12 is provided with an insertion groove 13 for the fixing parts 213 to be inserted. Each fixing part 213 has a first fixing hole 2131, and the bottom of the insertion groove 13 has a second fixing hole 131 opposite to the first fixing hole 2131. Bolts are inserted into the first fixing hole 2131 and the second fixing hole 131. The cooperation between the fixing parts 213 and the insertion grooves 13 facilitates the fixing of the cutter head 2 to the body 1.

[0031] This utility model is not limited to the specific embodiments described above. Those skilled in the art can implement this utility model using other specific embodiments based on the content disclosed in this utility model. Any simple changes or modifications made to the design structure and concept of this utility model will fall within the protection scope of this utility model.

Claims

1. A submersible sewage pump base comprising a body, a cutter head and a cutting knife, the body comprising a through hole, characterized in that: The cutter disc includes an upper cutter disc and a lower cutter disc. The upper cutter disc is disposed in a through hole and fixed to the body by bolts. The upper cutter disc and the lower cutter disc are connected by connecting columns. The cutting blade is disposed between the upper cutter disc and the lower cutter disc. The upper cutter disc is provided with a through hole. There are at least three connecting columns that are rotationally symmetrical along the axis of the through hole. A connecting shaft fixed to the cutting blade passes through the through hole.

2. The base of a submersible sewage pump according to claim 1, characterized in that: The upper cutter disc has at least two upper hollows that are symmetrically rotated along the axis of the through hole. The upper hollows are triangular in shape and all three sides of the upper hollows are curved. The lower cutter disc has at least two lower hollows that are rotatably supported along the axis of the through hole. The lower hollows are fan-shaped.

3. The base of a submersible sewage pump according to claim 2, characterized in that: The lower cutter head is provided with a mounting hole opposite to the through hole, and the diameter of the mounting hole is larger than the diameter of the through hole.

4. The base of a submersible sewage pump according to claim 3, characterized in that: The outer diameters of the upper and lower cutter discs are the same, the number of lower cutouts is the same as the number of connecting columns, and the connecting columns are located between the two lower cutouts.

5. The base of a submersible sewage pump according to claim 4, characterized in that: The opening of the through hole is provided with a stepped surface, and the edge of the upper cutter head is limited by the stepped surface.

6. The base of a submersible sewage pump according to claim 5, characterized in that: The outer edge of the upper cutter head is provided with at least three fixing parts, the stepped surface is provided with an embedding groove for the fixing parts to be embedded, the fixing part is provided with a fixing hole one, and the bottom of the embedding groove is provided with a fixing hole two opposite to the fixing hole one.

Images