Pump with drainage and pollution discharge functions

Abstract

The invention provides a pump with drainage and pollution discharge functions, which is mainly characterized in that a stator is arranged in a main shell, and a partition plate covers the main shell at the lower part so as to cover the stator; a rotor; an impeller; and a lower housing. Wherein the impeller is provided with a hollow main shaft, and the hollow main shaft is provided with at least one side hole; the impeller is provided with a top circular plate which is separated from the partition plate by a preset distance to form a gap; the top circular plate of the impeller is provided with an upper surface, the upper surface is provided with a plurality of pollution discharge blades, and when the impeller rotates, water is centrifugally pushed out towards the side face through the pollution discharge blades to enter the gap; and the plurality of pollution discharge blades are positioned below the partition plate but are not positioned in the gap.

Description

Technical Field

[0001] The present invention relates to the technical field of water pumps, and in particular to a pump with drainage and sewage discharge functions. Background Art

[0002] Currently known water pumps, such as Chinese patent CN100491739C, disclose a pump and a manufacturing method thereof, wherein a closed impeller is arranged below an inner rotor, and the closed impeller is in the form of blades arranged between a top plate and a bottom plate, and the inner rotor is located in a chamber, and the chamber is spatially connected to a drainage chamber where the closed impeller is located. Therefore, when the inner rotor drives the closed impeller to rotate, the driven water will not only be pushed to the outside, but some water will also flow between the inner rotor and the chamber wall, thereby providing a moisturizing effect to the inner rotor.

[0003] However, in the above scheme, the space between the inner rotor and the inner wall of the chamber must be as small as possible to facilitate the magnetic force of the stator, thereby improving the driving efficiency. However, when there is a foreign object in the driven water and it flows to the top of the closed impeller, since the water flow here will not be driven by the closed impeller, the foreign object may flow between the inner rotor and the inner wall of the chamber, and then may get stuck between the inner rotor and the inner wall of the chamber, which may cause the inner rotor to run unsmoothly, and in more serious cases, it may cause the inner rotor to be scratched or stuck and unable to run.

[0004] Therefore, how to prevent foreign matter in the water from entering between the inner rotor and the inner wall of the chamber is a problem that needs to be solved urgently. Summary of the invention

[0005] The main purpose of the present invention is to provide a pump with drainage and sewage discharge functions, which has sewage discharge blades above the impeller, which can drive the water above the impeller to the side, thereby discharging foreign matter or dirt in the water above the impeller.

[0006] Another object of the present invention is to provide a pump with drainage and sewage discharge functions, which can prevent foreign matter or dirt from entering between the rotor and the groove wall of the groove along with the water.

[0007] In order to achieve the above-mentioned object, the present invention provides a pump with drainage and sewage discharge functions, comprising: a main housing; a stator disposed in the main housing; a partition plate, which is covered at the bottom of the main housing and has a cylindrical container with an opening facing downward, and a ring rim located around the opening of the container, the partition plate and the main housing together cover the stator, and the stator encloses the container; a rotor, which is rotatably disposed in the main housing and is located in the container and is enclosed by the stator; an impeller, which is disposed on the rotor and is located below the rotor, the impeller has a top circular plate and a plurality of blades disposed at the bottom of the top circular plate, and when the impeller rotates, water is centrifugally pushed out to the side by the plurality of blades; and a lower housing, which is disposed on the main housing and is located below the partition plate, and the lower housing is connected to the main housing. A drainage cavity is formed between the partitions so that the impeller is located in the drainage cavity, the lower shell has a water suction port facing downward, and a drainage port is located on one side of the lower shell; wherein: the impeller has a hollow main shaft, the hollow main shaft has at least one side hole that passes through horizontally, and the bottom end of the hollow main shaft is spatially connected with the drainage cavity, and the at least one side hole is higher than the top circular plate; the diameter of the top circular plate of the impeller is larger than the diameter of the container groove, and a part of it is located below the annular eaves, and a gap is formed between the top circular plate and the annular eaves at a predetermined distance; the top circular plate of the impeller has an upper surface, and a plurality of sewage discharge blades are provided on the upper surface, and when the impeller rotates, water is centrifugally pushed to the side by the plurality of sewage discharge blades; the plurality of sewage discharge blades are located below the container groove but not in the gap.

[0008] The present invention arranges a sewage discharge blade above the impeller, which can drive the water above the impeller to the side, thereby discharging foreign matter or dirt in the water above the impeller, thereby preventing foreign matter or dirt from entering between the rotor and the groove wall of the groove along with the water. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 A three-dimensional diagram of a preferred embodiment of the present invention;

[0010] Figure 2 An exploded view of a preferred embodiment of the present invention;

[0011] Figure 3 An exploded view of another preferred embodiment of the present invention;

[0012] Figure 4 A top view of a preferred embodiment of the present invention;

[0013] Figure 5 For along Figure 4 Sectional view along section line 5-5;

[0014] Figure 6 A partial perspective view of a preferred embodiment of the present invention, showing a rotor and an impeller;

[0015] Wherein, the reference numerals are:

[0016] 10: Pump with drainage and sewage discharge function

[0017] 11:Main shell

[0018] 13: Stator

[0019] 15: Partition

[0020] 151: Container

[0021] 152: Groove wall

[0022] 153: Ring eaves

[0023] 21: Rotor

[0024] 31: Impeller

[0025] 32: Top round plate

[0026] 321: Upper surface

[0027] 322: sewage blade

[0028] 34:Leaf

[0029] 36: Bottom ring plate

[0030] 38:Hollow spindle

[0031] 381: Side hole

[0032] 41: Lower shell

[0033] 42: Drainage cavity

[0034] 44: Water inlet

[0035] 46: Drainage outlet

[0036] S: Gap. DETAILED DESCRIPTION

[0037] In order to explain the technical features of the present invention in detail, the following preferred embodiments are listed and illustrated with the accompanying drawings, wherein:

[0038] like Figures 1 to 6 As shown, a preferred embodiment of the present invention provides a pump 10 with drainage and sewage discharge functions, which is mainly composed of a main housing 11, a stator 13, a partition 15, a rotor 21, an impeller 31 and a lower housing 41, wherein:

[0039] The stator 13 is disposed in the main housing 11 .

[0040] The partition 15 is covered on the bottom of the main shell 11 and has a cylindrical groove 151 with an opening facing downward. The inner wall of the groove 151 is defined as a groove wall 152, and has a ring rim 153 located around the opening of the groove 151. The partition 15 and the main shell 11 together cover the stator 13, and the stator 13 encloses the groove 151.

[0041] The rotor 21 is rotatably disposed in the main housing 11 and is located in the receiving groove 151 and is surrounded by the stator 13 .

[0042] The impeller 31 is disposed on the rotor 21 and is located below the rotor 21. The impeller 31 has a top circular plate 32 and a plurality of blades 34 disposed at the bottom of the top circular plate 32. When the impeller 31 rotates, the plurality of blades 34 push water out to the side by centrifugal force. In this embodiment, the impeller 31 further has a bottom ring plate 36 disposed at the bottom of the plurality of blades 34. The top circular plate 32, the plurality of blades 34 and the bottom ring plate 36 are combined to form a closed impeller.

[0043] The lower shell 41 is disposed on the main shell 11 and is located below the partition 15. A drainage chamber 42 is formed between the lower shell 41 and the partition 15 so that the impeller 31 is located in the drainage chamber 42. The lower shell 41 has a water suction port 44 facing downward and a drainage port 46 located on one side of the lower shell 41.

[0044] The present invention is characterized in that:

[0045] The impeller 31 has a hollow main shaft 38, and the hollow main shaft 38 has two side holes 381 that penetrate transversely, and the bottom end of the hollow main shaft 38 is spatially connected to the drainage cavity 42, and the two side holes 381 are higher than the top circular plate 32. In this embodiment, the hollow main shaft 38 of the impeller 31 and part of the structure of the rotor 31 are integrally formed as an example for explanation, but in fact, the hollow main shaft 38 can also be connected to the rotor 31 in an existing known manner, and is not limited to integral formation.

[0046] The diameter of the top circular plate 32 of the impeller 31 is larger than the diameter of the receiving groove 151 , and a portion of the top circular plate 32 is located below the annular flange 153 . A predetermined distance is provided between the top circular plate 32 and the annular flange 153 to form a gap S.

[0047] The top circular plate 32 of the impeller 31 has an upper surface 321, and a plurality of drainage blades 322 are provided on the upper surface 321. When the impeller 31 rotates, the water is centrifugally pushed out to the side by the plurality of drainage blades 322. In actual implementation, the plurality of drainage blades 322 extend radially outward from the hollow main shaft 38 to a predetermined length, and the ends of the plurality of drainage blades 322 are separated from the gap S by a predetermined distance, and the ends of the plurality of drainage blades 322 are not located below the groove wall 152 of the containing groove 151. Such a structure can leave enough space for water to pass smoothly.

[0048] The plurality of sewage discharge blades 322 are located below the receiving groove 151 but not in the gap S.

[0049] In this embodiment, the height of each of the sewage discharge blades 322 is not higher than the height of the gap S, that is, the top edge of each of the sewage discharge blades 322 is not higher than the ring rim 153. The advantage of such a design is that the water moved by each of the sewage discharge blades 322 will not be too thick, and can smoothly enter the gap S, so that the foreign matter located above the impeller 31 can be smoothly pushed into the gap S with the water flow, and then flow out through the drain port 46 with the main water flow driven by the plurality of blades 34. However, if the height of each of the sewage discharge blades 322 is higher than the height of the gap S, it is also possible, but in this case, the water flow driven by it will have a larger head, and it is easy to cause turbulence and noise problems before entering the gap S. Therefore, the height of each of the sewage discharge blades 322 is determined according to specific needs.

[0050] In addition, in this embodiment, the groove 151 has a groove wall 152, and the connection between the ring edge 153 and the groove wall 152 is rounded. This structure helps the water driven by the plurality of sewage discharge blades 322 to smoothly enter the gap S without causing water flow disturbance.

[0051] The structure of this embodiment has been described above, and the operation of this embodiment will be described next.

[0052] like Figure 5 As shown, during operation, water enters the drainage chamber 42 from the water inlet 44, and when the impeller 31 is driven to rotate, the plurality of blades 34 drive the water in the drainage chamber 42 to rotate outward and be discharged outward through the drainage port 46. At the same time, the water above the impeller 31 is driven by the plurality of sewage discharge blades 322 to be pushed toward the gap S, and the water below the hollow main shaft 38 enters the hollow main shaft 38 and then flows out from the two side holes 381 to the top of the impeller 31.

[0053] Since the plurality of sewage discharge blades 322 are not located in the gap S but are located below the receiving groove 151, when the water is pushed by the plurality of sewage discharge blades 322, it will flow from the ends of the plurality of sewage discharge blades 322 to the gap S and then enter the gap S. Since the weight of harder objects in foreign matter or dirt is heavier than that of water, the foreign matter in the water above the impeller 31 will fall on the upper surface 321 of the top circular plate 32 of the impeller 31, and then be pushed sideways to the gap S by the plurality of sewage discharge blades 322 and discharged outward from the drain port 46 along with the water.

[0054] As can be seen from the above, by providing the plurality of sewage discharge blades 322 above the impeller 31 , the water above the impeller 31 can be driven sideways, thereby discharging foreign matter or dirt in the water above the impeller 31 .

[0055] In addition, after the foreign matter above the impeller 31 is effectively discharged to the outside, it is possible to further prevent the foreign matter or dirt from moving between the rotor 21 and the groove wall 152 of the groove 151, thereby solving the problem of possible damage to the rotor 21 in the prior art.

[0056] The above is merely the content of the present invention described through the embodiments, and it cannot be used to limit the scope of the patent application of the present invention. Any simple changes or equivalent transformations made according to the scope of the patent application of the present invention and the contents of the patent specification should be covered by the scope of the patent application of the present invention.

Claims

1. A pump with drainage and sewage discharge functions, comprising: a main housing; a stator, disposed in the main housing; a partition plate, which is covered on the bottom of the main housing and has a cylindrical groove with an opening facing downward, and a ring rim located around the opening of the groove, wherein the partition plate and the main housing together cover the stator, and the stator encloses the groove; A rotor rotatably disposed on the main housing and located in the receiving slot and surrounded by the stator; an impeller, disposed on the rotor and located below the rotor, the impeller having a top circular plate and a plurality of blades disposed at the bottom of the top circular plate, and the impeller centrifugally pushes water to the side through the plurality of blades when the impeller rotates; as well as A lower shell is disposed on the main shell and is located below the partition, a drainage cavity is formed between the lower shell and the partition so that the impeller is located in the drainage cavity, the lower shell has a water suction port facing downward, and a drainage port is located on one side of the lower shell; Features: The impeller has a hollow main shaft, the hollow main shaft has at least one side hole extending transversely therethrough, and the bottom end of the hollow main shaft is spatially connected to the drainage cavity, and the at least one side hole is higher than the top circular plate; The diameter of the top circular plate of the impeller is larger than the diameter of the containing groove, and a portion of the top circular plate is located below the annular eaves, and a gap is formed between the top circular plate and the annular eaves at a predetermined distance; The top circular plate of the impeller has an upper surface, and a plurality of drainage blades are provided on the upper surface, and when the impeller rotates, the plurality of drainage blades are used to centrifugally push water to the side; The plurality of blowdown blades are located below the receiving groove but not within the gap.

2. The pump with drainage and sewage discharge function according to claim 1, characterized in that: in: The height of each of the sewage discharge blades is not higher than the height of the gap.

3. The pump with drainage and sewage discharge function according to claim 1, characterized in that: in: The containing groove has a groove wall, and the connection between the ring edge and the groove wall is a chamfered corner.

4. The pump with drainage and sewage discharge function according to claim 3, characterized in that: in: The plurality of sewage discharge blades extend radially outwardly from the hollow main shaft by a predetermined length.

5. The pump with drainage and sewage discharge function according to claim 4, characterized in that: in: Tips of the plurality of sewage discharge blades are spaced apart from the gap by a predetermined distance.

6. The pump with drainage and sewage discharge function according to claim 4, characterized in that: in: Tip ends of the plurality of sewage discharge blades are not located below the groove wall of the containing groove.

7. The pump with drainage and sewage discharge function according to claim 1, characterized in that: in: The impeller has a bottom ring plate arranged at the bottom of the plurality of blades, and the top circular plate, the plurality of blades and the bottom ring plate are combined to form a closed impeller.

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