Impeller structure capable of reducing fluid flow resistance

Abstract

The utility model relates to the technical field of impellers, in particular to an impeller structure capable of reducing flow resistance of fluid, which reduces the flow resistance of the fluid. Comprising an impeller mechanism; and the flow guide ribs are installed on the impeller mechanism, and fluid is cut through the flow guide ribs.

Description

Technical Field

[0001] The utility model relates to the technical field of impellers, in particular to an impeller structure for reducing fluid flow resistance. Background Art

[0002] With the increasingly high requirements for energy conservation and environmental protection, pumps as key power sources must also meet the standards of high efficiency and low energy consumption. Water pumps are machines that transport liquids or pressurize liquids. They transfer the mechanical energy of the prime mover or other external energy to the liquid to increase the liquid energy. They are mainly used to transport liquids including water, oil, acid and alkali liquids, emulsions, suspensions and liquid metals.

[0003] Existing impellers, such as the prior art with application number CN201410261736.4, include a lower cover plate, blades, an impeller cover, an air inlet, a curved surface, a connecting section, an extension section and an axis. An impeller cover is provided above the blades, and the blades and the impeller cover are clearance-fitted. The impeller cover also serves as an upper cover plate in the structure, and forms a closed impeller structure with the lower cover plate and the blades, which reduces the size of the motor while ensuring the working efficiency of the impeller.

[0004] When an infinite number of blades is assumed, the spacing between them is extremely small. The liquid is strictly constrained by the blades, leaving no room for free movement and can only flow out of the rotating impeller along the gaps between the blades. The relative motion streamlines of the liquid completely align with the blade shape. In an impeller with a finite number of blades, wide flow channels are formed between adjacent blades. The liquid cannot flow completely along the direction of the blades, so it will collide with the fluid in the channel, generating vortices and increasing flow resistance. However, increasing the number of blades increases channel blockage, which can easily lead to adverse conditions such as cavitation. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides an impeller structure for reducing the flow resistance of the fluid.

[0006] The utility model provides an impeller structure for reducing fluid flow resistance, comprising an impeller mechanism; and also comprising guide ribs, which are mounted on the impeller mechanism and cut the fluid through the guide ribs; by cutting the fluid through the guide ribs, the flow resistance of the fluid is reduced, and adverse conditions such as blockage of the flow channel and generation of cavitation are prevented.

[0007] Preferably, the impeller mechanism includes an impeller seat, seven blades and an impeller cover, the seven blades are mounted on the impeller seat, and the impeller cover is mounted on the impeller seat; when the water pump is started, the motor drives the impeller seat and the blades to start rotating, and due to the rotation of the impeller seat and the blades, centrifugal force is generated inside the pump body, so that the pressure inside the pump body is lower than the pressure of the liquid. This pressure difference causes the liquid to be sucked into the interior of the pump body, especially into the central area of ​​the impeller seat and blades. As the impeller seat and blades continue to rotate, the liquid is thrown to the edge of the impeller seat and blades. When the liquid is compressed to a certain pressure, it will be discharged from the pump body, and the impeller seat and blades will be protected by the impeller cover.

[0008] Preferably, three guide ribs are provided between every two blades; the guide ribs are used to divide the fluid and reduce the flow resistance of the fluid.

[0009] Preferably, the streamlines on both sides of each guide rib are uniform and the blades are parallel; the above arrangement ensures that after the fluid is divided, it flows out of the impeller seat and the blades in the same direction.

[0010] Preferably, the height of the guide rib is 0.5-2mm, the length of the guide rib is 1 / 3 of the entire impeller flow channel, and gradually decreases from the blade inlet to the outlet; the above setting ensures that when the outlet speed is high, the outlet will not be blocked, thereby improving practicality.

[0011] Compared with the prior art, the beneficial effects of the present invention are: cutting the fluid through the guide ribs, reducing the flow resistance of the fluid, and preventing blockage of the flow channel and generation of cavitation and other adverse conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a first axonometric structural diagram of the present invention;

[0013] Figure 2 This is a second axonometric structural diagram of the present invention;

[0014] Figure 3 This is an axonometric structural diagram of the utility model without the impeller cover;

[0015] Figure 4 This utility model Figure 3 A second axonometric structural diagram;

[0016] Figure 5 This utility model Figure 3 A schematic diagram of the cross-section axonometric structure;

[0017] Markings in the accompanying drawings: 01, impeller mechanism; 11, impeller seat; 12, blades; 13, impeller cover; 21, guide ribs. DETAILED DESCRIPTION

[0018] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be provided below with reference to the accompanying drawings. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present invention. Example

[0019] like Figures 1 to 5 As shown, an impeller structure for reducing fluid flow resistance includes an impeller mechanism 01 and a guide rib 21. The guide rib 21 is installed on the impeller mechanism 01 and cuts the fluid through the guide rib 21.

[0020] The impeller mechanism 01 includes an impeller seat 11, seven blades 12 and an impeller cover 13. The seven blades 12 are mounted on the impeller seat 11, and the impeller cover 13 is mounted on the impeller seat 11.

[0021] Three guide ribs 21 are provided between every two blades 12;

[0022] The streamlines on both sides of each guide rib 21 are uniform and parallel to the blades 12;

[0023] The height of the guide rib 21 is 0.5-2 mm, and the length of the guide rib 21 is 1 / 3 of the entire impeller flow channel, gradually decreasing from the inlet to the outlet of the blade 12;

[0024] When the water pump starts, the motor drives the impeller seat 11 and the blades 12 to start rotating. Due to the rotation of the impeller seat 11 and the blades 12, centrifugal force is generated inside the pump body, making the pressure inside the pump body lower than the pressure of the liquid. This pressure difference causes the liquid to be sucked into the interior of the pump body, especially into the center area of ​​the impeller seat 11 and the blades 12. As the impeller seat 11 and the blades 12 continue to rotate, the liquid is thrown to the edge of the impeller seat 11 and the blades 12. When the liquid is compressed to a certain pressure, it will be discharged from the pump body. The impeller seat 11 and the blades 12 are protected by the impeller cover 13, and the fluid is divided by the guide ribs 21 to reduce the flow resistance of the fluid. The streamlines on both sides of each guide rib 21 are uniform and parallel to the blades 12, ensuring that after the fluid is divided, it flows out of the impeller seat 11 and the blades 12 in the same direction. The height of the guide rib 21 is 0.5-2mm, and the length of the guide rib 21 is 1 / 3 of the entire impeller flow channel. It gradually decreases from the inlet to the outlet of the blade 12 to ensure that the outlet will not be blocked when the outlet speed is high, thereby improving practicality.

[0025] like Figures 1 to 5As shown, the utility model is an impeller structure for reducing fluid flow resistance. When the water pump is working, when the water pump is started, the motor drives the impeller seat 11 and the blades 12 to start rotating. Due to the rotation of the impeller seat 11 and the blades 12, centrifugal force is generated inside the pump body, so that the pressure inside the pump body is lower than the pressure of the liquid. This pressure difference causes the liquid to be sucked into the interior of the pump body, especially into the center area of ​​the impeller seat 11 and the blades 12. As the impeller seat 11 and the blades 12 continue to rotate, the liquid is thrown to the edge of the impeller seat 11 and the blades 12. When the liquid is compressed After reaching a certain pressure, it will be discharged from the pump body, and the impeller seat 11 and blades 12 will be protected by the impeller cover 13. The fluid will be divided by the guide ribs 21 to reduce the flow resistance of the fluid. The streamlines on both sides of each guide rib 21 are uniform and parallel to the blades 12, ensuring that after the fluid is divided, it flows out of the impeller seat 11 and the blades 12 in the same direction. The height of the guide rib 21 is 0.5-2mm, and the length of the guide rib 21 is 1 / 3 of the entire impeller flow channel. It gradually decreases from the inlet to the outlet of the blade 12 to ensure that when the outlet speed is high, the outlet will not be blocked, thereby improving practicality.

[0026] The main function achieved by the utility model is to reduce the flow resistance of the fluid during the operation of the impeller.

[0027] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An impeller structure for reducing fluid flow resistance, comprising an impeller mechanism (01); characterized in that: It also includes a guide rib (21), which is installed on the impeller mechanism (01); The guide ribs (21) cut the fluid.

2. The impeller structure for reducing fluid flow resistance according to claim 1, characterized in that: The impeller mechanism (01) comprises an impeller seat (11), seven blades (12) and an impeller cover (13), wherein the seven blades (12) are mounted on the impeller seat (11), and the impeller cover (13) is mounted on the impeller seat (11).

3. The impeller structure for reducing fluid flow resistance according to claim 2, characterized in that: Three guide ribs (21) are provided between every two blades (12).

4. The impeller structure for reducing fluid flow resistance according to claim 2, wherein: The streamlines on both sides of each guide rib (21) are uniform and parallel to the blades (12).

5. The impeller structure for reducing fluid flow resistance according to claim 2, characterized in that: The height of the guide rib (21) is 0.5-2 mm, and the length of the guide rib (21) is 1 / 3 of the entire impeller flow channel, and gradually decreases and transitions from the inlet to the outlet of the blade (12).

Images