Impeller structure capable of reducing backflow

Abstract

The utility model relates to the technical field of water pump impellers, in particular to an impeller structure capable of reducing backflow, which enhances the performance of a water pump and improves the conversion efficiency. Comprising a volute and an anti-backflow assembly, an impeller is arranged on the lower portion of the volute, and the anti-backflow assembly is installed on the impeller.

Description

Technical Field

[0001] The utility model relates to the technical field of water pump impellers, in particular to an impeller structure that can reduce backflow. Background Technique

[0002] A water pump is a machine that transports liquids or increases the pressure of liquids. It transmits the mechanical energy of the prime mover or other external energy to the liquid, increasing the energy of the liquid. It is mainly used to transport liquids including water, oil, acid-base solutions, emulsions, suspension emulsions, and liquid metals. For example, the water pump proposed in the prior art publication number CN2327812Y includes a pump body, a pump cover, an impeller, a shaft, a mechanical shaft seal, a shaft sleeve, inlet and outlet ports. The axes of the outlet and inlet ports on the water pump are on the same horizontal plane and are perpendicular to each other.

[0003] The key role of the water pump impeller is to convert mechanical energy into the kinetic energy of the liquid. As the core component of the water pump, it generates centrifugal force through rotational motion, sucking the liquid from the central inlet of the impeller and pushing it towards the edge of the impeller. When the liquid flows, a small part of the liquid will flow back to the water pump inlet along the gap between the upper cover of the impeller and the volute, affecting the performance of the water pump and thus the conversion efficiency. Content of the Utility Model

[0004] To solve the above technical problems, the utility model provides an impeller structure that can reduce backflow, enhancing the performance of the water pump and improving the conversion efficiency.

[0005] An impeller structure that can reduce backflow of the utility model includes a volute and an anti-backflow component. The lower part of the volute is provided with an impeller, and the anti-backflow component is installed on the impeller. When in use, when the rotor drives the impeller to rotate at a high speed, the liquid that wants to flow back will be thrown back into the volute by the anti-backflow component of the impeller under the action of centrifugal force, greatly enhancing the performance of the water pump and improving the conversion efficiency.

[0006] Preferably, the anti-backflow component includes an upper impeller cover, a lower impeller cover, and a connecting shaft. The upper impeller cover and the lower impeller cover are respectively located at the upper and lower ends of the impeller, and the connecting shaft is fixedly installed in the middle of the bottom end of the impeller. The impeller is connected to the output end of the rotor through the connecting shaft, and the rotor drives the impeller to rotate at a high speed through the connecting shaft. The liquid that wants to flow back will be thrown back into the volute by the upper impeller cover again under the action of centrifugal force.

[0007] Preferably, blades identical to the impeller are provided at the position where there is a gap between the upper part of the upper impeller cover and the volute. The liquid that wants to flow back will be thrown back into the volute by the blades above the upper impeller cover again under the action of centrifugal force, greatly enhancing the performance of the water pump.

[0008] Preferably, the blade thickness of the upper part of the impeller cover is the same as that of the impeller blades, and the length is about one-third of the length of the impeller blades; the structure is simple, convenient for injection molding and easy to weld, without increasing any additional cost.

[0009] Compared with the prior art, the beneficial effects of the present utility model are as follows: when in use, when the rotor drives the impeller to rotate at a high speed, the liquid that wants to flow back will be thrown back into the volute by the anti-backflow component of the impeller under the action of centrifugal force, greatly enhancing the performance of the water pump and improving the conversion efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is a schematic structural view of the present utility model;

[0011] Figure 2 is a front view structural schematic of the present utility model;

[0012] Figure 3 is a bottom view three-dimensional structural schematic of the present utility model;

[0013] Figure 4 is a front view sectional structural schematic of the present utility model;

[0014] Figure 5 is a structural schematic of the impeller of the present utility model;

[0015] Reference numerals in the drawings: 1, volute; 2, impeller cover; 3, impeller bottom cover; 4, connecting shaft. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. The present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present utility model more thorough and comprehensive.

[0017] As Figures 1 to 5 shown, an impeller is provided at the lower part of the volute 1. The impeller cover 2 and the impeller bottom cover 3 are respectively located at the upper and lower ends of the impeller. The connecting shaft 4 is fixedly installed in the middle of the bottom end of the impeller. At the position where there is a gap between the upper part of the impeller cover 2 and the volute 1, there are blades the same as those of the impeller. The blade thickness of the upper part of the impeller cover 2 is the same as that of the impeller blades, and the length is about one-third of the length of the impeller blades;

[0018] The impeller is connected to the output end of the rotor through the connecting shaft 4. The rotor drives the impeller to rotate at a high speed through the connecting shaft 4. The liquid that wants to flow back will be thrown back into the volute by the blades above the impeller cover 2 again under the action of centrifugal force, greatly enhancing the performance of the water pump. The structure is simple, convenient for injection molding and easy to weld, without increasing any additional cost.

[0019] As Figures 1 to 5 shown, a kind of impeller structure capable of reducing backflow of the present utility model, when working, the impeller is connected to the output end of the rotor through the connecting shaft 4, and the rotor drives the impeller to rotate at high speed through the connecting shaft 4. The liquid wanting to flow back will be thrown back into the volute again by the blades above the upper cover 2 of the impeller under the action of centrifugal force, enhancing the performance of the water pump.

[0020] The above are only the preferred embodiments of the present utility model. It should be pointed out that for those of ordinary skill in the art of this technology, without departing from the technical principle of the present utility model, several improvements and modifications can still be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. An impeller structure capable of reducing backflow, characterized in that, It includes a volute (1) and a backflow prevention component. An impeller is arranged at the lower part of the volute (1), and the backflow prevention component is installed on the impeller.

2. The impeller structure capable of reducing backflow according to claim 1, characterized in that, The backflow prevention component includes an impeller upper cover (2), an impeller lower cover (3) and a connecting shaft (4). The impeller upper cover (2) and the impeller lower cover (3) are respectively located at the upper and lower ends of the impeller, and the connecting shaft (4) is fixedly installed in the middle of the bottom end of the impeller.

3. The impeller structure capable of reducing backflow according to claim 2, characterized in that, Blades identical to the impeller are arranged at the position where there is a gap between the upper part of the impeller upper cover (2) and the volute (1).

4. The impeller structure capable of reducing backflow according to claim 3, wherein, The thickness of the blades on the upper part of the impeller upper cover (2) is the same as that of the impeller blades, and the length is about one-third of the length of the impeller blades.

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