Submersible sewage pump with novel cutting module

Abstract

The utility model discloses a submersible sewage pump with a novel cutting module, which relates to the technical field of sewage pumps and comprises a base, a pump body is fixedly connected to the upper end of the base, an impeller is arranged in the pump body, a cutting knife is arranged below the impeller and fixedly connected with the pump body, a mounting cavity is formed in the middle of the impeller, and a cutting module is arranged in the mounting cavity. A driving shaft is fixedly connected to the interior of the installation cavity, the impeller is provided with an inclined inlet edge, and the inclination angle is larger than 45 degrees. Through the arrangement of the impeller, the inclined inlet edge is adopted, the inclination angle is larger than 45 degrees, the length of the inlet edge is increased, large objects can be cut, through the arrangement of the cutting knife, the inlet flow is increased, and the cutting efficiency is improved. And through cooperative arrangement of the impeller and the cutting knife, the cutting area is increased, and the cutting capacity is improved, so that the scene for treating various impurity media is widened, the pollution discharge efficiency is improved, and the effects of energy conservation and emission reduction are achieved.

Description

Technical Field

[0001] This utility model relates to the field of sewage pump technology, and in particular to a new type of submersible sewage pump with a cutting module. Background Technology

[0002] A sewage pump is a type of pump that integrates the pump and motor, both of which are submerged in liquid. Compared to general horizontal or vertical sewage pumps, sewage pumps have a compact structure and occupy less space.

[0003] In the existing technology, the cutting method of submersible sewage pumps is horizontal cutting, with the impeller and cutting disc cutting horizontally, or the cutting blade and cutting disc cutting horizontally. This results in a small cutting area, low flow rate, and low efficiency. The inlet flow velocity of the cutting disc is low, the sucked-in cutting object is small, and the impeller medium enters the pump vertically, resulting in a small cutting area and low efficiency. Utility Model Content

[0004] The purpose of this utility model is to solve the problems of existing submersible sewage pumps that use horizontal cutting methods, where the impeller and cutting disc cut horizontally, or the cutting blade and cutting disc cut horizontally, resulting in small cutting area, low flow rate, low efficiency, low inlet velocity of the cutting disc, small suction cutting object, and vertical entry of impeller medium into the pump, leading to small cutting area and low efficiency. Therefore, a new type of submersible sewage pump with a cutting module is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a new type of submersible sewage pump with a cutting module, comprising a base, a pump body fixedly connected to the upper end of the base, an impeller disposed inside the pump body, a cutting blade disposed below the impeller, the cutting blade being fixedly connected to the pump body, an installation cavity being opened in the middle of the impeller, a drive shaft being fixedly connected inside the installation cavity, the impeller adopting an inclined inlet edge with an inclination angle greater than 45°, and the cutting blade adopting a single-blade cutting blade.

[0006] Preferably, a pump cover is fixedly connected to the upper end of the pump body, and a connecting seat is fixedly connected to the upper end of the pump cover.

[0007] Preferably, a housing is fixedly connected to the upper end of the connecting seat, a wire-wound stator core is provided inside the housing, and a rotor mechanism is provided inside the wire-wound stator core.

[0008] Preferably, an upper end cover is fixedly connected to the upper end of the housing, and an upper bearing is fixedly connected to the lower end of the upper end cover.

[0009] Preferably, one end of the drive shaft passes through the rotor mechanism and is fixedly connected to the upper bearing.

[0010] Preferably, a handle is fixedly connected to the upper end of the upper cover, and a lower bearing is provided inside the connecting seat, which is fixedly connected to the drive shaft.

[0011] Preferably, an upper mechanical seal is provided below the lower bearing, and the upper mechanical seal is sleeved with the drive shaft; a lower mechanical seal is provided between the pump cover and the impeller, and the lower mechanical seal is sleeved with the drive shaft.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0013] In this invention, the impeller is designed with an inclined inlet side at an angle greater than 45°, which increases the length of the inlet side and allows for the cutting of larger objects. The cutting blade increases the inlet flow rate, thereby improving the pump efficiency. The combination of the impeller and the cutting blade increases the cutting area and enhances the cutting capacity, thus broadening the application scenarios for handling various impurity media, improving sewage discharge efficiency, and achieving energy conservation and emission reduction. Attached Figure Description

[0014] Figure 1 This utility model presents a schematic diagram of the internal structure of a submersible sewage pump with a novel cutting module.

[0015] Figure 2 A side cross-sectional view of the impeller in a submersible sewage pump with a novel cutting module is provided for this utility model.

[0016] Figure 3 A front view of a submersible sewage pump impeller with a novel cutting module is provided for this utility model;

[0017] Figure 4 A front view of the cutting blade in a submersible sewage pump with a novel cutting module is provided for this utility model.

[0018] Figure 5 This utility model presents a side cross-sectional view of the cutting blade in a submersible sewage pump with a novel cutting module.

[0019] Legend: 1. Base; 2. Cutting blade; 3. Pump body; 4. Impeller; 5. Connecting seat; 6. Wire-wound stator core; 7. Rotor mechanism; 8. Upper end cover; 9. Handle; 10. Upper bearing; 11. Lower bearing; 12. Upper mechanical seal; 13. Lower mechanical seal; 14. Pump cover; 15. Housing; 16. Drive shaft; 17. Mounting cavity. Detailed Implementation

[0020] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0021] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0022] Example: Figure 1 - Figure 5 As shown, this utility model provides a novel submersible sewage pump with a cutting module, including a base 1, a pump body 3 fixedly connected to the upper end of the base 1, an impeller 4 disposed inside the pump body 3, a cutting blade 2 disposed below the impeller 4, the cutting blade 2 being fixedly connected to the pump body 3, an installation cavity 17 formed in the middle of the impeller 4, a drive shaft 16 fixedly connected inside the installation cavity 17, the impeller 4 adopts an inclined inlet edge with an inclination angle greater than 45°, the cutting blade 2 is a single-blade cutting blade, a pump cover 14 fixedly connected to the upper end of the pump body 3, a connecting seat 5 fixedly connected to the upper end of the pump cover 14, and a casing 15 fixedly connected to the upper end of the connecting seat 5. The internal structure is equipped with a wire-wound stator core 6, and a rotor mechanism 7 is provided inside the wire-wound stator core 6. An upper end cover 8 is fixedly connected to the upper end of the housing 15, and an upper bearing 10 is fixedly connected to the lower end of the upper end cover 8. One end of the drive shaft 16 passes through the rotor mechanism 7 and is fixedly connected to the upper bearing 10. A handle 9 is fixedly connected to the upper end of the upper end cover 8. A lower bearing 11 is provided inside the connecting seat 5 and is fixedly connected to the drive shaft 16. An upper mechanical seal 12 is provided below the lower bearing 11 and is sleeved with the drive shaft 16. A lower mechanical seal 13 is provided between the pump cover 14 and the impeller 4 and is sleeved with the drive shaft 16.

[0023] The overall effect of this embodiment is that by setting the impeller 4 with an inclined inlet side and an inclination angle greater than 45°, the length of the inlet side is increased, which can cut larger objects. By setting the cutting blade 2, the inlet flow rate is increased, thereby improving the efficiency of the water pump. By cooperating with the impeller 4 and the cutting blade 2, the cutting area is increased, the cutting capacity is improved, thereby broadening the scenarios for handling various impurity media, improving sewage discharge efficiency, and achieving the effect of energy saving and emission reduction.

[0024] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the technical solution of this utility model shall still fall within the protection scope of this utility model.

Claims

1. A novel submersible sewage pump with a cutting module, comprising a base (1), characterized in that: The upper end of the base (1) is fixedly connected to a pump body (3). An impeller (4) is provided inside the pump body (3). A cutting blade (2) is provided below the impeller (4). The cutting blade (2) is fixedly connected to the pump body (3). An installation cavity (17) is opened in the middle of the impeller (4). A drive shaft (16) is fixedly connected inside the installation cavity (17). The impeller (4) adopts an inclined inlet edge with an inclination angle greater than 45°. The cutting blade (2) is a single-blade cutting blade. The upper end of the pump body (3) is fixedly connected to a pump cover (14). The upper end of the pump cover (14) is fixedly connected to a connecting seat (5). The upper end of the connecting seat (5) is fixedly connected to a casing (15). A wire-wound stator core (6) is provided inside the casing (15). A rotor mechanism (7) is provided inside the stator core (6) of the wire winding. An upper end cover (8) is fixedly connected to the upper end of the housing (15). An upper bearing (10) is fixedly connected to the lower end of the upper end cover (8). One end of the drive shaft (16) passes through the rotor mechanism (7) and is fixedly connected to the upper bearing (10). A handle (9) is fixedly connected to the upper end of the upper end cover (8). A lower bearing (11) is provided inside the connecting seat (5). The lower bearing (11) is fixedly connected to the drive shaft (16). An upper mechanical seal (12) is provided below the lower bearing (11). The upper mechanical seal (12) is sleeved with the drive shaft (16). A lower mechanical seal (13) is provided between the pump cover (14) and the impeller (4). The lower mechanical seal (13) is sleeved with the drive shaft (16).

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