CN220622247U - Pump with drainage and blowdown functions - Google Patents

Abstract

The utility model provides a pump with drainage and pollution discharge functions, which is mainly characterized in that a stator is arranged in a main shell, and the main shell is covered by a baffle plate at the lower part to cover the stator; a rotor; an impeller; and a lower housing. 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 and a partition plate which are separated by a preset distance to form a gap; the top round 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 to the side surface through the plurality of pollution discharge blades to enter the gap; the plurality of drainage vanes are positioned below the partition but not within the gap.

Description

Pump with drainage and blowdown functions

Technical Field

The utility model relates to the technical field of water pumps, in particular to a pump with drainage and pollution discharge functions.

Background

Currently known water pumps, such as chinese patent CN100491739C, disclose a pump and a method for manufacturing the same, wherein a closed impeller is disposed under an inner rotor, the closed impeller is in a form of a top plate and a bottom plate with blades disposed therebetween, and the inner rotor is disposed in a chamber, the chamber is spatially communicated with a water discharge chamber where the closed impeller is disposed, so that when the inner rotor drives the closed impeller to rotate, some water is forced to flow between the inner rotor and a chamber wall thereof, and thus a water wetting effect is provided to the inner rotor.

However, in the above solution, the space between the inner rotor and the inner wall of the chamber must be as small as possible, so as to facilitate the magnetic force of the stator, thereby improving the driving efficiency. However, when the driven water has foreign matters and flows above the closed impeller, the water is not driven by the closed impeller, so that the foreign matters may flow between the inner rotor and the inner wall of the chamber and may be blocked between the inner rotor and the inner wall of the chamber, which may cause unsmooth operation of the inner rotor and, more serious, may cause the problem that the inner rotor is scratched or blocked and cannot operate.

Therefore, how to prevent the foreign matters in the water from entering between the inner rotor and the inner wall of the chamber is a urgent problem to be solved.

Disclosure of Invention

The utility model mainly aims to provide a pump with drainage and pollution discharge functions, which is provided with a pollution discharge blade above an impeller, and can drive water above the impeller to the side surface so as to discharge foreign matters or dirt in the water above the impeller.

It is still another object of the present utility model to provide a pump with drainage and sewage discharge functions, which can prevent foreign matters or dirt from entering between the rotor and the groove wall of the vessel along with water.

In order to achieve the above object, the present utility model provides a pump with drainage and pollution discharge functions, comprising: a main housing; a stator arranged in the main shell; the baffle plate covers the bottom of the main shell and is provided with a cylindrical containing groove with a downward opening and a ring eave positioned around the opening of the containing groove, the baffle plate and the main shell cover the stator together, and the stator surrounds the containing groove; the rotor is rotatably arranged in the main shell and positioned in the accommodating groove and surrounded by the stator; the impeller is arranged on the rotor and below the rotor, the impeller is provided with a top circular plate and a plurality of blades arranged at the bottom of the top circular plate, and when the impeller rotates, water is centrifugally pushed out to the side face through the blades; the lower shell is arranged on the main shell and positioned below the partition board, a water draining cavity is formed between the lower shell and the partition board, so that the impeller is positioned in the water draining cavity, the lower shell is provided with a water sucking port facing downwards, and a water draining port is positioned on one side of the lower shell; wherein: the impeller is provided with a hollow main shaft, the hollow main shaft is provided with at least one side hole which transversely penetrates through the hollow main shaft, the bottom end of the hollow main shaft is spatially communicated with the water discharge 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 caliber of the accommodating groove, and a part of the top circular plate is positioned below the annular eave, and a gap is formed between the top circular plate and the annular eave at a preset distance; the top round 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 to the side surface through the plurality of pollution discharge blades; the plurality of drainage blades are positioned below the accommodating groove but not positioned in the gap.

According to the utility model, the sewage discharging blades are arranged above the impeller, so that water above the impeller can be driven to the side face, and foreign matters or dirt in the water above the impeller can be discharged, and further the foreign matters or dirt can be prevented from entering between the rotor and the groove wall of the containing groove along with the water.

Drawings

FIG. 1 is a perspective view of a preferred embodiment of the present utility model;

FIG. 2 is an exploded view of a preferred embodiment of the present utility model;

FIG. 3 is an exploded view of a preferred embodiment of the present utility model from another perspective;

FIG. 4 is a top view of a preferred embodiment of the present utility model;

FIG. 5 is a cross-sectional view taken along line 5-5 of FIG. 4;

FIG. 6 is a perspective view of a portion of the components of a preferred embodiment of the present utility model showing the rotor and impeller;

wherein, the reference numerals:

10 pump with drainage and pollution discharge functions

11 main housing

13 stator

15 separator plate

151 containing groove

152 groove wall

153 ring eave

21 rotor

31 impeller wheel

32 top round plate

321 upper surface

322 dirt discharging blade

34 blade

36 bottom ring plate

38 hollow spindle

381 side hole

41 lower shell

42 drainage cavity

44 water sucking mouth

46 drain outlet

S, clearance.

Detailed Description

For the purpose of illustrating the technical features of the present utility model in detail, the following preferred embodiments are exemplified in conjunction with the accompanying drawings in which:

as shown in fig. 1 to 6, a pump 10 with drainage and pollution discharge functions according to a preferred embodiment of the present utility model 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:

the stator 13 is provided in the main housing 11.

The partition 15 is covered on the bottom of the main housing 11, and has a cylindrical container 151 with a downward opening, the inner wall of the container 151 is defined as a groove wall 152, and an annular flange 153 around the opening of the container 151, the partition 15 and the main housing 11 cover the stator 13 together, and the stator 13 encloses the container 151.

The rotor 21 is rotatably disposed in the main housing 11 and is located in the accommodating groove 151 to be surrounded by the stator 13.

The impeller 31 is disposed below the rotor 21 and disposed on the rotor 21, the impeller 31 has a top circular plate 32, and a plurality of blades 34 disposed on the bottom of the top circular plate 32, and the impeller 31 centrifugally pushes water out to the side through the plurality of blades 34 when rotating. In this embodiment, the impeller 31 further has a bottom ring plate 36 disposed at the bottoms of the plurality of blades 34, and the top ring plate 32, the plurality of blades 34 and the bottom ring plate 36 are combined to form a closed impeller.

The lower casing 41 is disposed below the partition 15 and is disposed on the main casing 11, a drainage cavity 42 is formed between the lower casing 41 and the partition 15, so that the impeller 31 is disposed in the drainage cavity 42, the lower casing 41 has a water suction port 44 facing downward, and a water discharge port 46 is disposed on one side of the lower casing 41.

The utility model is characterized in that:

the impeller 31 has a hollow main shaft 38, the hollow main shaft 38 has two lateral holes 381 extending transversely therethrough, and the bottom end of the hollow main shaft 38 is spatially connected to the drainage chamber 42, the two lateral holes 381 being higher than the top circular plate 32. In the present embodiment, the hollow main shaft 38 of the impeller 31 and a part of the structure of the rotor 31 are integrally formed as an example, but the hollow main shaft 38 may be actually connected to the rotor 31 by a conventionally known method, and is not limited to being integrally formed.

The diameter of the top circular plate 32 of the impeller 31 is larger than the caliber of the accommodating groove 151, and a part of the top circular plate 32 is positioned below the ring edge 153, and a gap S is formed between the top circular plate 32 and the ring edge 153 by a predetermined distance.

The top circular plate 32 of the impeller 31 has an upper surface 321, and the upper surface 321 is provided with a plurality of drain blades 322, and the water is centrifugally pushed out sideways by the plurality of drain blades 322 when the impeller 31 rotates. In practice, the plurality of drainage blades 322 radially extend outwards from the hollow main shaft 38 for a predetermined length, and the ends of the plurality of drainage blades 322 are spaced apart from the gap S for a predetermined distance, and the ends of the plurality of drainage blades 322 are not located under the groove wall 152 of the accommodating groove 151, so that enough space is left for water to pass smoothly.

The plurality of drain blades 322 are positioned below the receiving groove 151 but not within the gap S.

In the present embodiment, the height of each of the drainage blades 322 is not higher than the height of the gap S, i.e., the top edge of each of the drainage blades 322 is not higher than the annular rim 153. The advantage of this design is that the water that each of the drainage blades 322 stirs is not too thick and can smoothly enter the gap S, so that the foreign matter located above the impeller 31 can smoothly push into the gap S along with the water flow, and then flow out through the drain outlet 46 along with the main water flow that the plurality of blades 34 push. However, if the height of each of the drainage blades 322 is higher than the height of the gap S, the water flow driven by the drainage blades may have a larger lift, which may easily cause turbulence and noise problems before entering the gap S. Accordingly, the height of each of the drainage blades 322 is determined according to specific requirements.

In addition, in the present embodiment, the accommodating groove 151 has a groove wall 152, and a connection portion between the ring edge 153 and the groove wall 152 is rounded. This configuration helps to allow water driven by the plurality of drainage blades 322 to smoothly enter the gap S without a disturbance of the water flow.

The structure of the present embodiment is described above, and the operation condition of the present embodiment is described next.

As shown in fig. 5, in operation, water enters the drainage chamber 42 through the water suction port 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 to move to the outside and drain to the outside through the water drain port 46. Meanwhile, the water above the impeller 31 is driven by the plurality of dirt discharging blades 322 to be pushed to the gap S, and the water below the hollow main shaft 38 enters the hollow main shaft 38 and flows out from the two side holes 381 to the above of the impeller 31.

Since the plurality of drainage blades 322 are not located in the gap S and are located below the receiving groove 151, water flows from the ends of the plurality of drainage blades 322 to the gap S and then enters the gap S when being pushed by the plurality of drainage blades 322. Further, since the weight of the foreign matter or the hard object is heavy with respect to the water, the foreign matter in the water above the impeller 31 falls on the upper surface 321 of the top circular plate 32 of the impeller 31, and is pushed sideways to the gap S through the plurality of drain blades 322 to be discharged outwards with the water from the drain outlet 46.

As described above, by providing the plurality of drain blades 322 above the impeller 31, the water above the impeller 31 can be driven sideways, and foreign substances or dirt in the water above the impeller 31 can be discharged.

In addition, after effectively discharging the foreign matters above the impeller 31, the foreign matters or dirt can be further prevented from moving between the rotor 21 and the groove wall 152 of the accommodating groove 151, so that the problem of possible damage to the rotor 21 in the prior art is solved.

The foregoing is illustrative of the present utility model and is not to be construed as limiting the scope of the utility model, which is defined by the appended claims and their equivalents.

Claims (7)

1. A pump with drainage and blowdown functions, comprising:

a main housing;

a stator arranged in the main housing;

the baffle plate covers the bottom of the main shell and is provided with a cylindrical containing groove with a downward opening and a ring eave positioned around the opening of the containing groove, the baffle plate and the main shell cover the stator together, and the stator encloses the containing groove;

the rotor is rotatably arranged in the main shell, is positioned in the accommodating groove and is surrounded by the stator;

the impeller is arranged on the rotor and is positioned below the rotor, the impeller is provided with a top circular plate and a plurality of blades arranged at the bottom of the top circular plate, and when the impeller rotates, water is centrifugally pushed out to the side face through the blades; and

the lower shell is arranged below the partition plate, a water draining cavity is formed between the lower shell and the partition plate, so that the impeller is positioned in the water draining cavity, the lower shell is provided with a water sucking port facing downwards, and a water draining port is positioned on one side of the lower shell;

the method is characterized in that:

the impeller is provided with a hollow main shaft, the hollow main shaft is provided with at least one side hole which transversely penetrates through the hollow main shaft, the bottom end of the hollow main shaft is spatially communicated with the drainage cavity, and the at least one side hole is higher than the top round plate;

the diameter of the top circular plate of the impeller is larger than the caliber of the accommodating groove, and a part of the top circular plate is positioned below the annular eave, and a gap is formed by the top circular plate and the annular eave at a preset distance;

the top round plate of the impeller is provided with an upper surface, the upper surface is provided with a plurality of pollution discharge blades, and water is centrifugally pushed out to the side surface through the plurality of pollution discharge blades when the impeller rotates;

the plurality of drainage blades are positioned below the accommodating groove but not in the gap.

2. The pump with drainage and blowdown function according to claim 1, wherein: wherein: the height of each sewage disposal blade is not higher than the height of the gap.

3. The pump with drainage and blowdown function according to claim 1, wherein: wherein: the accommodating groove is provided with a groove wall, and the joint of the annular eave and the groove wall is a rounding angle.

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

5. The pump with drainage and blowdown function according to claim 4, wherein: wherein: the ends of the plurality of drainage blades are spaced a predetermined distance from the gap.

6. The pump with drainage and blowdown function according to claim 4, wherein: wherein: the tail ends of the plurality of sewage disposal blades are not positioned below the groove wall of the containing groove.

7. The pump with drainage and blowdown function according to claim 1, wherein: wherein: the impeller is provided with a bottom ring plate arranged at the bottoms of the blades, and the top circular plate, the blades and the bottom ring plate are combined to form a closed impeller.