Miniature sewage pump

Abstract

The micro sewage pump comprises a pump body, a front cover, a stator, a rotor, a sewage cover, an impeller, a water blade cover and a water outlet hole, and is characterized in that a gap of 0.2-0.3 mm is reserved between the side edge of the sewage cover and the inner face of a water cavity of the pump body, a gap of 0.2-0.3 mm is reserved between an inner hole of the sewage cover and a rotor shaft, and a deep groove of 0.2-0.3 mm is formed in the rear end face of the sewage cover. The design allows water to flow through the gap to cool the rotor, prevents impurities from entering the rotor cavity, prevents the stator from being blocked and burnt out, and ensures that the water pump stably runs in sewage for a long time and the flow and the water pressure are not influenced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of aquarium water circulation system and small filter system, in particular to a micro sewage water pump. BACKGROUND

[0002] The prior art water pump runs in sewage, and water pressure exists in the water cavity. When water flows into the rotor cavity, impurities are easy to enter the rotor cavity, causing the rotor to be blocked, the water pump to stop running and lose function. As a result, the rotor is blocked for a long time, the temperature rises, the rotor cavity deforms, and the stator is burned out.

[0003] In view of the problems in the related art, no effective solution has been proposed so far. SUMMARY

[0004] In view of the problems in the related art, the present application proposes a micro sewage water pump to overcome the above technical problems existing in the prior art.

[0005] To this end, the specific technical solutions adopted by the present application are as follows:

[0006] A micro sewage water pump, comprising a pump body, a front cover is fitted and installed at the front end of the pump body, a stator is fixedly installed at the inner side of the rear end of the pump body, a rotor is installed at the inner side of the pump body, a sewage cover is installed at the rear end of the rotor, an impeller is fixedly installed at the outer side of the rotating shaft of the rotor, a water blade cover is installed at the front end of the impeller, and a water outlet hole is provided at the rear end of the pump body.

[0007] As a further solution of the present application, a gap of 0.2-0.3mm is reserved between the side edge of the sewage cover and the inner surface of the water cavity of the pump body.

[0008] As a further solution of the present application, a gap of 0.2-0.3mm is reserved between the inner hole of the sewage cover and the rotating shaft of the rotor.

[0009] As a further solution of the present application, a groove of 0.2-0.3mm deep is provided at the rear end surface of the sewage cover.

[0010] As a further solution of the present application, the gap between the rotor and the rotor cavity of the pump body is 0.5-0.6mm.

[0011] As a further solution of the present application, the water outlet hole communicates the rotor cavity with the external water body.

[0012] As a further solution of the present application, the front cover and the water blade cover cooperate to seal the front end of the impeller.

[0013] The present application has the following advantages:

[0014] The present application sets the pump body, front cover, stator, rotor, sewage cover, impeller, water blade cover and water outlet hole, the sewage cover gap (0.2-0.3mm) blocks the large debris into the rotor cavity, and the small debris is discharged from the water outlet hole through the rotor cavity gap (0.5-0.6mm), which completely avoids the rotor from being stuck; the water cavity pressure drives the water flow through the gap to cool the rotor, the water outlet hole forms a convection heat dissipation, and prevents the temperature from rising to cause the cavity deformation or the stator burnout; the gap design has no significant influence on the water pump flow and water pressure, and ensures long-term and efficient operation in the sewage environment. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor based on these drawings.

[0016] Figure 1 It is a whole structure schematic diagram of a micro sewage pump according to an embodiment of the present application;

[0017] Figure 2 It is a whole explosion diagram of a micro sewage pump according to an embodiment of the present application;

[0018] Figure 3 It is a whole rear side schematic diagram of a micro sewage pump according to an embodiment of the present application;

[0019] Figure 4 It is an installation structure schematic diagram of a water blade cover of a micro sewage pump according to an embodiment of the present application;

[0020] Figure 5 It is an installation structure schematic diagram of an impeller of a micro sewage pump according to an embodiment of the present application;

[0021] Figure 6 It is a whole structure schematic diagram of a sewage cover of a micro sewage pump according to an embodiment of the present application;

[0022] Figure 7 It is a whole internal structure schematic diagram of a micro sewage pump according to an embodiment of the present application.

[0023] In the drawings:

[0024] 1, pump body; 2, front cover; 3, stator; 4, sewage cover; 5, rotor; 6, impeller; 7, water blade cover;

[0025] 8, water outlet hole. DETAILED DESCRIPTION

[0026] For further illustrating the embodiments, the present application provides the accompanying drawings which form a part of the present application disclosure, and which are used for explaining the embodiments and the operating principles of the embodiments, and which can be used in combination with the related descriptions in the specification to enable those skilled in the art to understand other possible implementations and the advantages of the present application. The components in the drawings are not drawn in scale, and similar component symbols are usually used to represent similar components.

[0027] According to the embodiments of the present application, a micro sewage pump is provided.

[0028] Please refer to the accompanying drawings in the description Figures 1-7 According to the embodiments of the present application, a micro sewage pump is provided.

[0029] The gap between the side edge of the sewage cover 4 and the inner surface of the water cavity of the pump body 1 is 0.2-0.3 mm, the gap between the inner hole of the sewage cover and the rotor shaft is 0.2-0.3 mm, and the rear end surface of the sewage cover is provided with a 0.2-0.3 mm deep groove. During the operation of the water pump, due to the water pressure in the water cavity, water enters the rotor cavity through these small holes to cool the rotor 5. Due to the gap of 0.2-0.3 mm, large impurities cannot flow into the rotor cavity and are discharged from the water outlet hole 8 with the water flow; the gap between the rotor 5 and the rotor cavity is 0.5-0.6 mm, so that small impurities will not be stuck in the rotor cavity and will be discharged from the rear end of the pump body; at the same time, the water outlet hole 8 at the rear end of the pump body makes the rotor cavity contact with the water body in the cylinder to form a convection cooling, and since the water body in the cylinder has no water pressure, impurities will not enter the rotor cavity in the opposite direction.

[0030] The front cover 2 is installed by clamping, which is convenient for disassembly and cleaning; the water blade cover 7 and the front end of the impeller 6 form a sealed cavity to optimize the water pressure distribution.

[0031] In an embodiment, please refer to the accompanying drawings in the description Figures 1-7 As a further scheme of the present application, the gap between the side edge of the sewage cover 4 and the inner surface of the water cavity of the pump body 1 is 0.2-0.3 mm.

[0032] For allowing water flow to enter the rotor cavity to cool the rotor 5 and blocking large-sized impurities.

[0033] In an embodiment, please refer to the accompanying drawings in the description Figures 1-7 As a further scheme of the present application, the gap between the inner hole of the sewage cover 4 and the rotor shaft of the rotor 5 is 0.2-0.3 mm.

[0034] Prevent impurities from being stuck in the rotor shaft.

[0035] In an embodiment, please refer to the attached drawings Figures 1-7 As a further aspect of the application, the rear end surface of the sewage cover 4 is provided with a 0.2-0.3mm deep groove.

[0036] Auxiliary water flow guide and pressure balance.

[0037] In an embodiment, please refer to the attached drawings Figures 1-7 As a further aspect of the application, the rotor 5 and the rotor cavity gap of the pump body 1 is 0.5-0.6mm.

[0038] Allowing small size debris to be discharged with water flow from the water outlet hole 8.

[0039] In an embodiment, please refer to the attached drawings Figures 1-7 As a further aspect of the application, the water outlet hole 8 communicates the rotor cavity with the external water body.

[0040] Forming a convection cooling system, and because the external water body has no pressure difference, debris cannot enter the rotor cavity in reverse.

[0041] In an embodiment, please refer to the attached drawings Figures 1-7 As a further aspect of the application, the front cover 2 and the water leaf cover 7 cooperate to seal the front end of the impeller 6.

[0042] Ensuring that water pressure is concentrated on the water outlet hole 8.

[0043] The sewage cover side and the inner surface of the water cavity leave a 0.2-0.3mm gap, the sewage cover inner hole and the rotor shaft leave a 0.2-0.3mm gap, and the rear end surface of the sewage cover is provided with a 0.2-0.3mm deep groove. During the operation of the water pump, due to the water pressure in the water cavity, water enters the rotor cavity to cool the rotor through these small holes. Due to the 0.2-0.3mm gap, large debris cannot flow into the rotor cavity and is discharged with the water flow from the water outlet hole. The rotor and the rotor cavity gap is 0.5-0.6mm, and small debris will not be stuck in the rotor cavity and will be discharged from the rear end of the pump body. At the same time, the water outlet hole at the rear end of the pump body makes the rotor cavity contact with the water body in the cylinder to form convection and cool the rotor. Because the water body in the cylinder has no water pressure, the water body will not flow into the rotor cavity, so the debris in the cylinder will not enter the rotor cavity from the rear end of the pump body.

[0044] Because the sewage cover and the pump body, rotor have only a 0.2-0.3mm water flow gap, it has little effect on the working performance of the water pump. Therefore, the flow and water pressure of the water pump will not be reduced due to the existence of the sewage cover.

[0045] In use, the water pump is placed in the filter system of the aquarium fish tank, and the sewage is sucked in through the front cover 2, and is discharged from the water outlet hole 8 after being pressurized by the impeller 6. The gap design ensures long-term operation without maintenance requirements, and is especially suitable for small filtration scenarios.

[0046] The above merely provides the preferred embodiment of the present application, and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall fall into the protection scope of the present application.

Claims

1. A micro sewage pump, comprising a pump body (1), characterized in that: The front end of the pump body (1) is snap-fitted with a front cover (2), the inner side of the rear end of the pump body (1) is fixedly mounted with a stator (3), the inner side of the pump body (1) is mounted with a rotor (5), the rear end of the rotor (5) is mounted with a sewage cover (4), the outer side of the rotating shaft of the rotor (5) is fixedly mounted with an impeller (6), the front end of the impeller (6) is mounted with a water blade cover (7), and the rear end of the pump body (1) is provided with a water outlet hole (8).

2. A micro sewage pump according to claim 1, characterized in that: A gap of 0.2-0.3 mm is reserved between the side of the sewage cover (4) and the inner surface of the water cavity inside the pump body (1).

3. A micro sewage pump according to claim 1, characterized in that: A gap of 0.2-0.3 mm is reserved between the inner hole of the sewage cover (4) and the rotating shaft of the rotor (5).

4. A micro sewage pump according to claim 1, characterized in that: The rear end surface of the sewage cover (4) is provided with a groove with a depth of 0.2-0.3 mm.

5. The micro sewage pump according to claim 1, characterized in that: The rotor cavity gap between the rotor (5) and the pump body (1) is 0.5-0.6 mm.

6. The micro sewage pump according to claim 1, characterized in that: The water outlet hole (8) communicates with the rotor cavity and the external water body.

7. The micro sewage pump according to claim 1, characterized in that: The front cover (2) cooperates with the water blade cover (7) to seal the front end of the impeller (6).

Images