CN217440354U - High-efficient immersible pump impeller - Google Patents

Abstract

The utility model discloses a high-efficient submersible pump impeller, become the biggest to the preceding fillet and the back fillet at the impeller blade back from importing to the export gradually, can reduce the diffusion angle of impeller import to the impeller export, diffusion loss has been reduced, simultaneously owing to adopt big fillet, wet week has also reduced, fluid loss in the impeller has been reduced, work efficiency is improved, draw out new short blade in the middle of the blade export simultaneously, realize subtracting heavy and weaken the export backward flow, and further back shroud or the backward flow of front shroud are retrieved to the import of little blade to back shroud or front shroud are opened, pump efficiency has also been improved like this.

Description

High-efficient immersible pump impeller

Technical Field

The utility model relates to a immersible pump field especially relates to a high-efficient immersible pump impeller of improvement to traditional no jam impeller innovation.

Background

The submersible pump is an important device for pumping water from a deep well, when in use, the whole unit is submerged into water to work, and the underground water is pumped to the ground surface, so that the submersible pump is used for domestic water, mine emergency rescue, industrial cooling, farmland irrigation, seawater lifting and ship load regulation, and can also be used for fountain landscape.

When the submersible pump works, the impeller rotates at a high speed, liquid in the impeller rotates along with the blades, the liquid flies away from the impeller and is ejected outwards under the action of centrifugal force, the speed of the ejected liquid in the diffusion chamber of the pump shell is gradually reduced, the pressure of the ejected liquid is gradually increased, and then the ejected liquid flows out from the outlet of the pump and the discharge pipe. At this time, a vacuum low-pressure area without air and liquid is formed at the center of the blade because the liquid is thrown to the periphery, the liquid in the liquid pool flows into the pump through the suction pipe under the action of the atmospheric pressure of the pool surface, and the liquid is continuously sucked from the liquid pool and continuously flows out from the discharge pipe.

At present, submersible pumps in the market are particularly suitable for application of sewage media, most impellers with fewer blades are adopted for dealing with the sewage media, but the fewer the blades of the impellers are, the stronger the non-blocking performance is, but the lower the efficiency of the pump is.

SUMMERY OF THE UTILITY MODEL

The utility model provides a high-efficient submersible pump impeller aims at improving the work efficiency of submersible pump, solves the technical problem who exists among the prior art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a high-efficient immersible pump impeller, impeller blade, front shroud and back shroud, evenly set up impeller blade between front shroud and the back shroud, the impeller blade back with the front shroud junction is equipped with preceding fillet, the blade back with the back shroud junction is equipped with the back fillet, preceding fillet and back fillet are along impeller import to impeller external diameter grow gradually.

As a further aspect of the present invention: the maximum value of the front fillet and the rear fillet is the height of the blade.

As a further aspect of the present invention: the front fillet and the rear fillet take the value of 1/2 blade heights.

As a further aspect of the present invention: the impeller blade outlet is provided with a small blade cavity, the front cover plate is provided with a front cover plate inlet, the rear cover plate is provided with a rear cover plate inlet, and the front cover plate inlet and the rear cover plate inlet are communicated with the small blade cavity.

Compared with the prior art, the beneficial effects of the utility model are that:

1. preceding fillet and back fillet are along the impeller import to the impeller external diameter grow gradually, can show and reduce the interior fluid overflow area of impeller to reduce the diffusion angle of the interior fluid overflow area of impeller from the impeller import to the impeller export, reduced the diffusion loss, simultaneously owing to adopt big fillet, the wet week has also reduced, has reduced the loss of fluid in the impeller, thereby has improved the work efficiency of immersible pump.

2. Impeller blade is equipped with little blade chamber in impeller external diameter department, the front shroud is equipped with the front shroud import, the back shroud is equipped with the back shroud import, front shroud import and back shroud import communicate with each other with little blade chamber, the weight of blade can be reduced in the setting in little blade chamber, the front shroud import communicates with each other with little blade chamber simultaneously with the back shroud import, the front shroud import can introduce little blade chamber with the back shroud import with the backward shroud return fluid of front shroud and back shroud department from the front shroud import and back shroud import, because the blade effect in little blade chamber, can pump partial return fluid, thereby reduce the backward flow at the blade back, the work efficiency of submersible pump has been improved.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

Fig. 1 is a schematic view of a conventional submersible pump impeller.

Fig. 2 is a schematic diagram of an improved submersible pump impeller.

Fig. 3 is a schematic diagram of water in the improved submersible pump impeller.

Fig. 4 is a schematic diagram of the re-optimization of the improved submersible pump impeller.

Fig. 5 is a cross-sectional view of a re-optimized outlet center for an improved submersible pump impeller.

Notations for reference numerals: C. rotating the axis; A. a front cover plate; B. a rear cover plate; w, a blade working surface; 1V, conventional impeller blades; 1E, traditional rear round corners; 1D, traditional front round corners; 2V, impeller blades; 2E, a rear round corner; 2D, front round corners; 3E, rounding the rear corners of the impeller water body; 3D, rounding the front of the impeller water body; 3L, leading lines of front fillets of the impeller water body; 3M, a guide line for the rear fillet of the impeller water body; 2S, small blade cavities; 2J, a front cover plate inlet; 2K, a rear cover plate inlet; H. the blade height.

Detailed Description

The present invention will be described in detail with reference to the following embodiments, wherein like or similar elements are designated by the same reference numerals, and wherein the shape, thickness or height of the various elements may be expanded or reduced in practice. The embodiments of the present invention are provided only for illustration, and not for limiting the scope of the present invention. Any obvious and obvious modifications or alterations to the present invention can be made without departing from the spirit and scope of the present invention.

Referring to fig. 1, the conventional back fillet 1E and the conventional front fillet 1D are both small, which makes the areas between the conventional impeller blades 1V and at the outer diameters of the front cover plate a and the back cover plate B large.

Referring to fig. 2, the back fillets 2E and the front fillets 2D are gradually enlarged from the blade inlet to the outer diameter of the impeller, so that the areas between the impeller blades 2V and the areas of the front cover plate a and the back cover plate B at the outer diameter of the impeller can be remarkably reduced.

Further referring to fig. 3, fillet 3E behind the impeller water is 2E, fillet 3D before the impeller water is 2D, and the water external feature is the internal feature in the impeller in improving the impeller promptly. The change of the rear fillet 2E and the front fillet 2D is known by the change of the rear fillet 3E of the impeller water body and the change of the front fillet 3D of the impeller water body. The guide line 3L of the front fillet of the impeller water body and the guide line 3M of the rear fillet of the impeller water body are guide curves (from the impeller inlet to the outer diameter direction of the impeller) with guide radiuses gradually increased from small to large, so that the area of the impeller inlet between 2V impeller blades and between the front cover plate A and the rear cover plate B is changed from the area of the inner diameter of the impeller inlet to the area of the outer diameter of the impeller is reduced and increased, the diffusion angle of the overflowing area between the blades from the inlet to the outlet of the impeller is reduced, the diffusion loss is reduced, meanwhile, due to the adoption of the large fillet, the wet circumference is also reduced, the friction contact area between fluid and the impeller is reduced, the friction loss is reduced, and the efficiency is improved.

Referring to fig. 4 and 5, the small vane cavity 2S is dug at the outer diameter of the impeller vane 2V, which not only reduces the weight of the vane, but also reduces the backflow of the back of the vane by pumping part of the liquid back due to the vane action of the small vane cavity 2S. The backflow from the front cover plate A and the backflow from the rear cover plate B are introduced into the small blade cavity 2S from the front cover plate inlet 2J and the rear cover plate inlet 2K and pumped out of the impeller by opening the front cover plate inlet 2J on the improved impeller front cover plate A and opening the rear cover plate inlet 2K on the improved impeller rear cover plate B, so that the purpose of improving efficiency is achieved by recycling part of backflow.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (6)

1. The utility model provides a high-efficient immersible pump impeller, includes front shroud (A), back shroud (B), and evenly set up in impeller blade (2V) between front shroud (A) and back shroud (B), its characterized in that: the impeller blade (2V) back with front shroud (A) junction is equipped with preceding fillet (2D), impeller blade (2V) back with back shroud (B) junction is equipped with back fillet (2E).

2. An efficient submersible pump impeller as recited in claim 1, wherein: and the front fillet (2D) and the rear fillet (2E) are gradually enlarged from the impeller inlet to the outer diameter of the impeller.

3. An efficient submersible pump impeller as recited in claim 2, wherein: the maximum values of the front fillet (2D) and the rear fillet (2E) are the blade height (H).

4. An efficient submersible pump impeller as recited in claim 2, wherein: the value of the front fillet (2D) and the rear fillet (2E) is 1/2 blade height (H).

5. An efficient submersible pump impeller as recited in claim 2, wherein: and a small blade cavity (2S) is arranged at the middle outlet of the impeller blade (2V).

6. An efficient submersible pump impeller as recited in claim 5, wherein: the front cover plate (A) is provided with a front cover plate inlet (2J), the rear cover plate (B) is provided with a rear cover plate inlet (2K), and the front cover plate inlet (2J) and the rear cover plate inlet (2K) are communicated with the small blade cavity (2S).

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