Submersible sewage pump shell and submersible sewage pump

Abstract

The utility model relates to the technical field of submersible sewage pumps, and provides a submersible sewage pump shell and a submersible sewage pump, the submersible sewage pump shell comprises a motor shield shell, an impeller shell and a base which are sequentially arranged from top to bottom, a liquid inlet is formed in the side wall face of the base, and one side of the impeller shell is communicated with a pumping pipe; the isolation shell wraps the motor shield shell, and a heat dissipation cavity is formed between the isolation shell and the motor shield shell; a communicating hole is formed in the side, close to the pumping pipe, of the impeller shell and communicates with the heat dissipation cavity, a flow guide hole is formed in the outer side wall of the top of the heat dissipation cavity, and a flow guide channel in the direction from the communicating hole to the flow guide hole is formed in the heat dissipation cavity. And the heat conducting sheet is arranged in the motor shield shell and is in contact with the side wall surface of the driving motor. According to the submersible sewage pump shell, the heat dissipation effect on the motor can be enhanced, and the service life of equipment is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of submersible sewage pumps, in particular to a submersible sewage pump casing and a submersible sewage pump. Background Art

[0002] A submersible sewage pump is a product that combines a pump and a motor and can be submerged in liquid to perform pumping operations. It can effectively transport domestic sewage, wastewater, etc. and has a wide range of applications.

[0003] In the prior art, most submersible sewage pumps are usually equipped with cutting and filtering equipment to reduce the operating load of the pump body by reducing the amount of large particles of impurities sucked into the pump body, thereby achieving the purpose of extending the service life of the equipment.

[0004] However, current submersible sewage pump structures still have certain operational drawbacks. For example, in a submersible sewage pump with patent number CN220522809U, a heat-conducting plate is provided inside the housing, and a heat sink is provided outside the housing to dissipate heat from the drive motor and extend the motor's service life. However, since this only cuts and filters impurities in the pumped sewage, and the surface of the heat sink primarily contacts untreated sewage, sticky impurities in the sewage easily adhere to the heat sink, affecting the heat dissipation effect. This results in poor heat dissipation from the motor provided by the conventional pump housing. Therefore, a submersible sewage pump housing is urgently needed to address this issue. Utility Model Content

[0005] The purpose of the utility model is to provide a submersible sewage pump housing and a submersible sewage pump, so as to solve the problems existing in the above-mentioned prior art, thereby enhancing the heat dissipation effect of the motor and extending the service life of the equipment.

[0006] To achieve the above-mentioned purpose, the present invention provides the following solutions: The housing of the submersible sewage pump of the present invention comprises:

[0007] The motor shield shell, the impeller shell and the base are arranged in sequence from top to bottom, wherein the side wall of the base is provided with a liquid inlet, and one side of the impeller shell is connected to a pumping pipe;

[0008] An isolation shell is covered on the outside of the motor shield shell, and a heat dissipation cavity is formed between the isolation shell and the motor shield shell;

[0009] A connecting hole is provided on a side of the impeller housing close to the pumping pipe, the connecting hole is connected to the heat dissipation cavity, a guide hole is provided on the top outer wall of the heat dissipation cavity, and a guide channel is formed in the heat dissipation cavity along the connecting hole to the guide hole;

[0010] The heat conducting sheet is arranged in the motor shield shell and contacts the side wall surface of the driving motor.

[0011] Preferably, the diameter of the communicating hole is smaller than the inner diameter of the pumping pipe.

[0012] Preferably, a guide plate is fixedly connected to the bottom end of the communicating hole, the guide plate is integrally formed with the impeller housing, and the bottom end thereof is inclined toward the impeller and extends into the pumping pipe.

[0013] Preferably, the heat conducting plate is fixed to the inner wall surface of the motor shield shell, and the heat conducting plate is arranged between the connecting hole and the guide hole in the horizontal direction.

[0014] Preferably, a plurality of the guide holes are provided along the circumference of the isolation shell.

[0015] Preferably, it also includes:

[0016] The filter screen is fixed between the impeller housing and the base and is used to block impurities.

[0017] Preferably, the filter holes of the filter screen are smaller than the aperture of the communicating holes.

[0018] A submersible sewage pump comprising the submersible sewage pump housing described in any one of the above

[0019] The utility model discloses the following technical effects:

[0020] The utility model provides an isolation shell outside the motor shield shell, and by covering the motor shield shell with the isolation shell, and fixing the isolation shell to the impeller shell and the motor shield shell, a heat dissipation cavity is formed between the isolation shell and the motor shield shell. Moreover, the heat dissipation cavity is connected to the outside only through the connecting hole provided on the impeller shell and the guide hole provided on the top side wall. When the impeller rotates to perform a pumping operation, a conveying operation force can be formed along the impeller shell to the pumping pipe. Combined with the connecting effect of the connecting hole, a guide force is formed in the heat dissipation cavity along the direction from the connecting hole to the guide hole. Through the contact between the heat conducting plate and the drive motor, flowing water heat exchange is realized in the isolation shell, which effectively improves the heat dissipation effect of the drive motor. Compared with traditional technologies, it can avoid the situation where the heat dissipation effect is affected by impurities attached to the outer wall of the isolation shell, thereby extending the service life of the drive motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 This is a structural sectional view of the submersible sewage pump housing in the utility model;

[0023] Figure 2 This is a diagram showing the positional relationship between the communication hole and the impeller housing in the present utility model;

[0024] Among them, 1. Motor shield shell; 2. Impeller shell; 3. Base; 4. Pumping pipe; 5. Isolation shell; 6. Heat conduction plate; 7. Diversion hole; 8. Connecting hole; 9. Guide plate; 10. Drive motor; 11. Impeller; 12. Filter. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0027] Reference Figure 1-Figure 2 The utility model provides a submersible sewage pump housing, comprising:

[0028] The motor shield shell 1 , the impeller shell 2 and the base 3 are arranged in sequence from top to bottom, wherein a liquid inlet is opened on the side wall of the base 3 , and a pumping pipe 4 is connected to one side of the impeller shell 2 .

[0029] The isolation shell 5 is covered on the outside of the motor protection shell 1 , and a heat dissipation cavity is formed between the isolation shell 5 and the motor protection shell 1 .

[0030] Among them, a connecting hole 8 is opened on the side of the impeller housing 2 close to the pumping pipe 4, and the connecting hole 8 is connected to the heat dissipation cavity. A guide hole 7 is opened on the outer wall of the top of the heat dissipation cavity, and a guide channel is formed in the heat dissipation cavity along the connecting hole 8 to the guide hole 7.

[0031] The heat conducting sheet 6 is disposed in the motor shield shell 1 and contacts the side wall surface of the driving motor 10 .

[0032] The utility model provides an isolation shell 5 outside the motor shield shell 1, and forms a heat dissipation cavity between the isolation shell 5 and the motor shield shell 1 by covering the motor shield shell 1 with the isolation shell 5 and fixing the isolation shell 5 to the impeller shell 2 and the motor shield shell 1.

[0033] Moreover, the heat dissipation cavity is connected to the outside only through the connecting hole 8 opened on the impeller housing 2 and the guide hole 7 opened on the top side wall. When the impeller 11 rotates to perform pumping operations, a conveying operation force can be formed along the impeller housing 2 to the pumping pipe 4. Combined with the connecting function of the connecting hole 8, a guide force is formed in the heat dissipation cavity along the connecting hole 8 to the guide hole 7.

[0034] Through the contact between the heat conducting plate 6 and the drive motor 10, flowing water heat exchange is achieved in the isolation shell 5, which effectively improves the heat dissipation effect of the drive motor 10. Compared with traditional technologies, it can avoid the situation where impurities attached to the outer wall of the isolation shell 5 affect the heat dissipation effect, thereby extending the service life of the drive motor 10.

[0035] Furthermore, the diameter of the communication hole 8 is smaller than the inner diameter of the pumping pipe 4. This ensures that the pumping operation is carried out effectively. During the pumping process, a small amount of water is passed into the isolation shell 5 through the communication hole 8. Since the submersible sewage pump is submerged underwater, the isolation shell 5 can be filled with water. After the small amount of water enters the isolation shell 5, a hydraulic propulsion effect is generated, and heat exchange is achieved with the flowing water in the heat dissipation cavity during the continuous pumping operation of the impeller 11.

[0036] Furthermore, a guide plate 9 is fixedly connected to the bottom end of the communication hole 8 . The guide plate 9 is integrally formed with the impeller housing 2 , and the bottom end of the guide plate 9 is inclined toward the impeller 11 and extends into the pumping pipe 4 .

[0037] Reference Figure 1-Figure 2 The bottom end of the guide plate 9 extends into the pumping pipe 4 and is inclined toward the impeller 11. During the pumping process, water can flow into the communicating hole 8 through the guide plate 9 when passing through the pumping pipe 4.

[0038] Furthermore, the heat conducting sheet 6 is fixed to the inner wall surface of the motor shield shell 1 , and the heat conducting sheet 6 is arranged between the communicating hole 8 and the guide hole 7 along the horizontal direction.

[0039] Furthermore, a plurality of guide holes 7 are provided along the circumference of the isolation shell 5 .

[0040] In the present technical solution, there is only one connecting hole 8, and several guide holes 7 are rotatably provided along the outer peripheral side of the isolation shell 5. When the submersible sewage pump is submerged underwater, water can simultaneously pass through several guide holes 7 into the heat dissipation cavity, and the guide holes 7 are opened at the top of the isolation shell 5 to ensure that the heat dissipation cavity can be filled with water.

[0041] Furthermore, it also includes:

[0042] The filter screen 12 is fixed between the impeller housing 2 and the base 3 to block impurities.

[0043] Furthermore, the pores of the filter screen 12 are smaller than the aperture of the communicating hole 8. Impurities are blocked by the filter screen 12, and the pores of the filter screen 12 are smaller than the aperture of the communicating hole 8, ensuring that impurities in the sewage will not block the communicating hole 8 during the pumping process.

[0044] A submersible sewage pump comprises any one of the above submersible sewage pump casings.

[0045] In this technical solution, a crushing component may be provided in the base 3, which is preferably but not limited to a crushing component in a submersible sewage pump of patent number CN220522809U, which drives the output shaft of the motor 10 through the filter 12, and then extends into the base 3 and is fixedly connected with a number of crushing knives and scrapers, thereby crushing the sewage sucked by the pump, and slidingly contacting the filter 12 through the scraper, thereby cleaning the surface of the filter 12. No further description will be made for the prior art.

[0046] The working principle of the utility model submersible sewage pump housing and submersible sewage pump:

[0047] The submersible sewage pump is placed in the sewage, and the sewage is passed into the heat dissipation cavity through a number of diversion holes 7. The drive motor 10 is started to drive the impeller 11 to rotate, and the impeller 11 forms a conveying force from the liquid inlet to the pumping pipe 4 to transport the sewage. During the process, the sewage enters the base 3 and is cut by the crushing assembly. After being filtered by the filter 12, it is passed into the impeller housing 2. When the sewage flows through the pumping pipe 4, it enters the heat dissipation cavity through the connecting hole 8 through the diversion effect of the guide plate 9, and the water pressure is provided by the rotation of the impeller 11, which squeezes the water in the heat dissipation cavity along the diversion hole 7. The cooling water flows in the heat dissipation cavity and passes over the outer wall of the motor shield shell 1, forcing the heat to be dissipated. In addition, the heat of the drive motor 10 absorbed by the heat conductive plate 6 is efficiently discharged, thereby achieving the cooling of the drive motor 10.

[0048] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

[0049] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements to the technical solutions of the present invention made by ordinary technicians in this field should fall within the scope of protection determined by the claims of the present invention.

Claims

1. A submersible sewage pump housing, characterized in that: include: A motor shield shell (1), an impeller shell (2) and a base (3) are sequentially arranged from top to bottom, wherein a liquid inlet is provided on a side wall of the base (3), and a pumping pipe (4) is connected to one side of the impeller shell (2); An isolation shell (5) is wrapped around the motor shield shell (1), and a heat dissipation cavity is formed between the isolation shell (5) and the motor shield shell (1); A connecting hole (8) is provided on a side of the impeller housing (2) close to the pumping pipe (4), the connecting hole (8) is connected to the heat dissipation cavity, a guide hole (7) is provided on the top outer wall of the heat dissipation cavity, and a guide channel is formed in the heat dissipation cavity in a direction from the connecting hole (8) to the guide hole (7); The heat conducting sheet (6) is arranged in the motor shield shell (1), and the inner end thereof contacts the side wall surface of the driving motor (10).

2. The submersible sewage pump housing according to claim 1, characterized in that: The diameter of the communicating hole (8) is smaller than the inner diameter of the pumping pipe (4).

3. The submersible sewage pump housing according to claim 1, characterized in that: A guide plate (9) is fixedly connected to the bottom end of the communication hole (8); the guide plate (9) is integrally formed with the impeller housing (2), and the bottom end thereof is inclined toward the impeller (11) and extends into the pumping pipe (4).

4. The submersible sewage pump housing according to claim 1, characterized in that: The heat conducting plate (6) is fixed to the inner wall surface of the motor shield shell (1), and the heat conducting plate (6) is arranged between the connecting hole (8) and the guide hole (7) in the horizontal direction.

5. The submersible sewage pump housing according to claim 1, characterized in that: A plurality of the guide holes (7) are provided along the circumference of the isolation shell (5).

6. The submersible sewage pump housing according to claim 1, characterized in that: Also includes: A filter screen (12) is fixed between the impeller housing (2) and the base (3) and is used to block impurities.

7. The submersible sewage pump housing according to claim 6, characterized in that: The filter holes of the filter screen (12) are smaller than the aperture of the communicating hole (8).

8. A submersible sewage pump, characterized in that: The invention comprises a submersible sewage pump casing according to any one of claims 1 to 7.

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