A vertically mounted drainage pump

Abstract

The utility model provides a vertical hang drainage pump, sets up the water baffle of lower section of impeller in the water inlet pipe to the water baffle rotation direction inclination, and the water suction into the rear inclined plane of water baffle bottom can drive the water flow rotation to go up, and the water suction efficiency is better, and the irregular rotation movement track of inclined plane can better stir the water film, and let the water suction be more smooth, simultaneously, sets up the exhaust hole in the water inlet and outlet end cover side, when the cavity has air, can exhaust through the exhaust hole, effectively solves the air congestion phenomenon in the water inlet and outlet cavity, better guarantee drainage effect.

Description

Technical Field

[0001] This utility model relates to the field of drainage pump technology, and in particular to a vertically mounted drainage pump. Background Technology

[0002] Drain pumps are needed for draining water from window air conditioners, elevator air conditioners, and dehumidifiers. Conventional drain pumps have a straight impeller at the bottom, which results in relatively low suction efficiency. The straight impeller's ability to break the water film during rotation is also limited. Furthermore, because the internal cavity of a drain pump is sealed during pumping, air cannot be completely expelled when it is drawn in. This can lead to air trapping and cause drainage malfunctions. Therefore, further improvements to the drain pump's structure are necessary. Utility Model Content

[0003] In view of this, the present invention provides a vertically mounted drainage pump, which addresses the problems of the prior art by designing an inclined impeller stirring plate and an exhaust port to solve the existing technical problems.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A vertically mounted drainage pump, comprising:

[0006] The outer casing has a lower end closed and an upper end open to form a mounting cavity. The bottom plate at the lower end of the outer casing is provided with a rotor protrusion at its center. The rotor protrusion is provided with an upward-facing rotor cavity with an upper end closed and a lower end open. The lower end opening of the rotor cavity is fixedly and sealed to the outer edge of the rotor protrusion. A stator mounting cavity is formed between the outer side of the rotor cavity and the inner wall of the outer casing. An upper mounting boss is provided at the upper end closed of the rotor cavity.

[0007] A stator assembly is disposed within a stator mounting cavity, with the middle portion of the stator assembly sleeved on the outside of the rotor cavity;

[0008] The inlet and outlet end caps are sealed and fixedly installed on the lower side of the bottom plate of the outer casing after pressing down on the rotor sealing plate. The rotor sealing plate has a lower mounting boss that is embedded upward into the rotor protrusion at the center. An inlet and outlet cavity is formed between the inlet and outlet end caps and the rotor sealing plate. An inlet pipe is provided at the bottom of the inlet and outlet end caps and communicates with the inlet and outlet cavity. An outlet pipe is provided on the side of the inlet and outlet end caps and communicates with the inlet and outlet cavity.

[0009] The rotor assembly has an upper end of its shaft that is rotatably mounted in an upper mounting boss via an upper bearing. The lower end of the shaft extends through the center of the rotor sealing plate into the inlet / outlet water cavity and is rotatably mounted in a lower mounting boss via a lower bearing at the rotor sealing plate. The magnet of the rotor assembly is located between the upper and lower bearings and is sleeved on the shaft.

[0010] An impeller is fixedly installed on the outer side of the section of the rotating shaft located inside the water inlet and outlet chambers. The upper section of the impeller is provided with at least two push plates facing the water outlet pipe. The push plates are evenly distributed on the outer side of the upper section of the impeller. The lower section of the impeller extends into the water inlet pipe and is provided with at least two agitator plates on its side. The agitator plates are evenly distributed on the outer side of the lower section of the impeller. The at least two agitator plates are inclined from top to bottom in the direction of impeller rotation.

[0011] Furthermore, the inlet and outlet end caps are provided with vent holes that penetrate the wall of the inlet and outlet end caps.

[0012] Furthermore, a top cover is provided on the upper opening of the outer casing, and the top cover is sealed and fixed to the upper opening of the outer casing.

[0013] Furthermore, a sealing ring is provided between the outer ring of the rotor sealing plate and the inlet / outlet end cap.

[0014] Furthermore, a vertical hanging ring is fixedly provided on the side of the outer casing.

[0015] The beneficial effects of this utility model are as follows:

[0016] This invention features a water-stirring plate located inside the inlet pipe, which is tilted in the direction of impeller rotation. After water is drawn in from the bottom of the water-stirring plate, the inclined surface can drive the water flow to rotate upwards, resulting in better water absorption efficiency. Furthermore, the irregular rotational trajectory of the inclined surface can better break up the water film, making water absorption smoother. At the same time, vent holes are provided on the sides of the inlet and outlet end caps. When there is air in the cavity, it can be vented through the vent holes, effectively solving the problem of trapped air in the inlet and outlet cavities and ensuring better drainage performance. Attached Figure Description

[0017] Figure 1 This is a cross-sectional view of the vertically mounted drainage pump in this utility model along the vertical direction;

[0018] Figure 2 This is a schematic diagram showing the disassembled vertically mounted drainage pump in this utility model;

[0019] Figure 3 This is a schematic diagram of the impeller in this utility model;

[0020] Figure 4 This is a schematic diagram of the outer shell of this utility model.

[0021] The annotations in the attached figures are explained as follows:

[0022] 10. Outer shell, 11. Base plate, 111. Rotor protrusion, 20. Rotor cavity, 21. Upper mounting boss, 30. Stator mounting cavity, 40. Inlet and outlet end caps, 50. Inlet and outlet chambers, 51. Inlet pipe, 52. Outlet pipe, 53. Vent, 54. Rotor sealing plate, 60. Lower mounting boss, 61. Rotor assembly, 70. Shaft, 71. Upper bearing, 72. Lower bearing, 73. Magnet, 74. Impeller, 80. Push plate, 81. Stirring plate, 82. Top cover, 90. Sealing ring, 100. Vertical mounting ring, 110. Detailed Implementation

[0023] The embodiments of this disclosure will now be described in detail with reference to the accompanying drawings.

[0024] The following specific examples illustrate the implementation of this disclosure. Those skilled in the art can easily understand other advantages and effects of this disclosure from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this disclosure, and not all of them. This disclosure can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this disclosure. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0025] To ensure smoother water absorption and resolve the issue of trapped air in the water inlet and outlet chambers, the specific details of this utility model are as follows.

[0026] Combination Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the embodiment of this utility model is a vertically mounted drainage pump. Importantly, it includes a housing 10, with the lower end of the housing 10 closed and the upper end open to form an installation cavity. The bottom plate 11, which is closed at the lower end of the housing 10, has a rotor protrusion 111 at its center. A rotor cavity 20, with its upper end closed and its lower end open, is provided on the rotor protrusion 111. The lower end opening of the rotor cavity 20 is fixedly and sealed to the outer edge of the rotor protrusion 111. Generally, the rotor cavity 20 and the housing 10 are integrally formed. The manufacturing process of the entire housing 10, the bottom plate 11, and the integral rotor cavity 20 from the center of the bottom plate 11 is mature and easy to process.

[0027] A stator mounting cavity 30 is formed between the outer side of the rotor cavity 20 and the inner wall of the outer shell 10. An upper mounting boss 21 is provided at the closed upper end of the rotor cavity 20. Of course, the top of the rotor cavity 20 can also be used as the upper mounting boss 21 directly, without the need to set the upper mounting boss 21 separately, and the effect of the upper mounting boss 21 can be achieved.

[0028] The stator assembly 40 is disposed inside the stator mounting cavity 30, and the middle part of the stator assembly 40 is sleeved on the outside of the rotor cavity 20;

[0029] After the inlet and outlet end caps 50 press against the rotor sealing plate 60, they are sealed and fixedly installed on the lower side of the bottom plate 11 of the outer shell 10. The rotor sealing plate 60 has a lower mounting boss 61 that is embedded upward into the rotor extension 111 at its center. An inlet and outlet cavity 51 is formed between the inlet and outlet end caps 50 and the rotor sealing plate 60. An inlet pipe 52 is provided at the bottom of the inlet and outlet end caps 50 and communicates with the inlet and outlet cavity 51. An outlet pipe 53 is provided on the side of the inlet and outlet end caps 50 and communicates with the inlet and outlet cavity 51.

[0030] The upper end of the rotor assembly 70 shaft 71 is rotatably mounted in the upper mounting boss 21 via the upper bearing 72. The lower end of the shaft 71 passes through the center of the rotor sealing plate 60 and extends into the inlet / outlet water chamber 51. It is rotatably mounted in the lower mounting boss 61 via the lower bearing 73 at the rotor sealing plate 60. The magnet 74 of the rotor assembly 70 is located between the upper bearing 72 and the lower bearing 73 and is sleeved on the shaft 71.

[0031] This method of installing the stator and rotor can completely isolate the liquid from the charged stator components, effectively preventing liquid from entering the charged parts of the motor and causing damage or leakage.

[0032] The impeller 80 is fixedly installed on the outer side of the section of the rotating shaft 71 located inside the inlet / outlet water chamber 51. The impeller 80 is driven to rotate by a motor. The upper section of the impeller 80 is provided with at least two push plates 81 facing the outlet pipe 53. The push plates 81 are evenly distributed on the outer side of the upper section of the impeller 80. Under the high-speed rotation of the motor, the push plates 81 push the liquid or gas in the inlet / outlet water chamber 51 to be discharged from the outlet pipe 53, forming a negative pressure relative to the inlet pipe 52. This allows liquid to be drawn from the inlet pipe 52, achieving the effect of drainage. The lower section of the impeller 80 extends into the inlet pipe 52, and at least two agitator plates 82 are provided on its side. The agitator plates 82 are evenly distributed on the outer side of the lower section of the impeller 80, and the agitator plates 82 are inclined from top to bottom towards the rotation direction of the impeller 80.

[0033] The main feature of this invention is that the lower section of the agitator plate 82, which is located inside the water inlet pipe 52 of the impeller 80, is tilted in the direction of rotation of the impeller 80. After water is drawn in from the bottom of the agitator plate 82, the inclined surface can drive the water flow to rotate upward, resulting in better water absorption efficiency. Furthermore, the irregular rotational trajectory of the inclined surface can better break the water film, making water absorption smoother.

[0034] Furthermore, in some embodiments, such as Figure 2As shown, in order to solve the problem of trapped air in the inlet and outlet water chambers, the side of the inlet and outlet end cap 50 is provided with an exhaust hole 54 that penetrates the wall of the inlet and outlet end cap 50. When there is air in the chamber, it can be vented through the exhaust hole 54, which effectively solves the problem of trapped air in the inlet and outlet water chambers and better ensures the drainage effect.

[0035] Furthermore, in some embodiments, such as Figure 1 and Figure 2 As shown, in order to better protect the motor stator assembly and live parts, an upper cover 90 is provided on the upper opening of the housing 10. The upper cover 90 is sealed and fixed on the upper opening of the housing 10, which can effectively prevent liquids, dust, impurities and other substances from entering the stator mounting cavity 30, thus better protecting the motor stator assembly and live parts.

[0036] Furthermore, in some embodiments, such as Figure 1 and Figure 2 As shown, in order to improve the airtightness of the inlet and outlet water chamber 51, a sealing ring 100 is provided between the outer ring of the rotor sealing plate 60 and the inlet and outlet water end cover 50. The sealing ring 100 can effectively ensure the airtightness between the inlet and outlet water end cover 50, the rotor sealing plate 60 and the base plate 11, thereby ensuring the airtightness of the inlet and outlet water chamber 51.

[0037] Furthermore, in some embodiments, such as Figure 4 As shown, in order to facilitate the vertical installation of the drainage pump, a vertical mounting ring 110 is fixedly provided on the side of the housing 10. The vertical drainage pump in this application can be directly fixed and installed through the vertical mounting ring 110, which facilitates assembly and installation.

[0038] The above description is merely illustrative of the embodiments of this utility model and is not intended to limit the scope of this utility model. For those skilled in the art, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model without creative labor should be included within the protection scope of this utility model.

Claims

1. A vertically mounted drainage pump, characterized in that, It includes: The outer shell (10) has a lower end closed and an upper end open to form an installation cavity. The bottom plate (11) of the lower end of the outer shell (10) is provided with a rotor protrusion (111) at its center. The rotor protrusion (111) is provided with an upward-facing rotor cavity (20) with an upper end closed and a lower end open. The lower end opening of the rotor cavity (20) is fixedly and sealed to the outer edge of the rotor protrusion (111). The outer side of the rotor cavity (20) and the inner wall of the outer shell (10) form a stator installation cavity (30). The upper end of the rotor cavity (20) is provided with an upper mounting boss (21). A stator assembly (40) is disposed in a stator mounting cavity (30), and the middle part of the stator assembly (40) is sleeved on the outside of the rotor cavity (20); The inlet and outlet end caps (50) are sealed and fixedly installed on the lower side of the bottom plate (11) of the outer shell (10) after pressing the rotor sealing plate (60). The rotor sealing plate (60) has a lower mounting boss (61) that is embedded upward into the rotor extension (111) at its center. The inlet and outlet end caps (50) and the rotor sealing plate (60) form an inlet and outlet cavity (51). The bottom of the inlet and outlet end caps (50) is provided with an inlet pipe (52) that communicates with the inlet and outlet cavity (51). The side of the inlet and outlet end caps (50) is provided with an outlet pipe (53) that communicates with the inlet and outlet cavity (51). The rotor assembly (70) has its upper shaft (71) rotatably mounted in the upper mounting boss (21) via an upper bearing (72), and its lower shaft (71) extends through the center of the rotor sealing plate (60) into the inlet / outlet water chamber (51) and is rotatably mounted in the lower mounting boss (61) via a lower bearing (73) at the rotor sealing plate (60). The magnet (74) of the rotor assembly (70) is located between the upper bearing (72) and the lower bearing (73) and is sleeved on the rotor shaft (71). An impeller (80) is fixedly installed on the outer side of the section of the rotating shaft (71) located inside the water inlet / outlet chamber (51). The upper section of the impeller (80) is provided with at least two push plates (81) facing the water outlet pipe (53). The push plates (81) are evenly distributed on the outer side of the upper section of the impeller (80). The lower section of the impeller (80) extends into the water inlet pipe (52) and at least two agitator plates (82) are provided on its side. The agitator plates (82) are evenly distributed on the outer side of the lower section of the impeller (80). The at least two agitator plates (82) are inclined from top to bottom towards the rotation direction of the impeller (80).

2. The vertically mounted drainage pump according to claim 1, characterized in that: The inlet / outlet end cap (50) is provided with an exhaust hole (54) that penetrates the wall of the inlet / outlet end cap (50) on its side.

3. The vertically mounted drainage pump according to claim 1, characterized in that: The upper opening of the outer shell (10) is provided with a top cover (90), which is sealed and fixed to the upper opening of the outer shell (10).

4. The vertically mounted drainage pump according to claim 1, characterized in that: A sealing ring (100) is provided between the outer ring of the rotor sealing plate (60) and the inlet / outlet end cap (50).

5. The vertically mounted drainage pump according to claim 1, characterized in that: A vertical hanging ring (110) is fixedly provided on the side of the outer shell (10).

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