Self-suction structure and water pump

Abstract

The application relates to a self-suction structure and a water pump, and relates to the technical field of water pumps, which comprises a guide vane and a flow guide, the flow guide is provided with a containing cavity, the guide vane is fixedly installed in the containing cavity, the flow guide is further provided with a separation cavity, the flow guide is further provided with a communication hole, the communication hole is used for connecting the containing cavity and the separation cavity, the containing cavity is located in front of the separation cavity, and an impeller is arranged in the containing cavity and located in front of the guide vane. The application has the advantages of good gas-liquid separation effect and good self-suction effect.

Description

Technical Field

[0001] This application relates to the technical field of water pumps, and in particular to a self-priming structure and a water pump. Background Technology

[0002] Most household self-priming booster pumps on the market have simple gas-liquid separation chamber structures, or even no gas-liquid separation structure at all. Most structures rely on the characteristics of the gas-liquid mixture for self-separation. However, when the impeller rotates at high speed, the water flow speed is also fast. The gas-liquid mixture is not fully separated in the gas-liquid separation chamber and re-enters the impeller through the return hole for the next cycle, resulting in poor gas-liquid separation effect and further affecting the pump's self-priming performance. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, one of the objectives of this application is to provide a self-priming structure and water pump, which has the advantages of good gas-liquid separation effect and good self-priming effect.

[0004] This application discloses a self-priming structure, including a guide vane and a flow guide. The flow guide has a receiving cavity, and the guide vane is fixedly installed in the receiving cavity. The flow guide also has a separation cavity and a connecting hole for connecting the receiving cavity and the separation cavity. The receiving cavity is located in front of the separation cavity, and the impeller is disposed in the receiving cavity and located in front of the guide vane.

[0005] By adopting the above technical solution, during use, the impeller transports the water-air mixture to the guide vane. When the mixture enters the separation chamber through the guide vane and the connecting hole, the mixture can achieve a good separation effect in the separation chamber, thereby making the gas-liquid separation effect better and the pump's self-priming effect better during use.

[0006] In a preferred embodiment, the present application may be further configured such that: the guide vane includes a blade and a guide wheel, the guide wheel and the blade are fixedly connected and form a rotating cavity for accommodating the impeller, and the guide wheel is provided with a flow channel that passes through the guide wheel.

[0007] By adopting the above technical solution, the presence of the rotating cavity makes it easier for the mixed liquid to enter the connecting hole from the flow channel and then enter the separation chamber from the connecting hole.

[0008] In a preferred embodiment, this application may be further configured such that: a guide tongue is fixedly connected to the side of the blade away from the impeller; there are multiple guide tongues evenly distributed around the circumference; at least one flow channel is provided between adjacent guide tongues; and the guide tongues are arc-shaped.

[0009] By adopting the above technical solution, the presence of the guide tongue can guide the mixed liquid passing through the flow channel.

[0010] In a preferred embodiment, this application can be further configured such that: a guide block is provided within the flow channel, the guide block includes a guide surface, and the guide surface is arc-shaped.

[0011] By adopting the above technical solution, the arc-shaped guide surface can guide the mixed liquid passing through the flow channel, thereby reducing the energy loss of the mixed liquid.

[0012] In a preferred embodiment, this application may be further configured such that: the flow guide block is also provided with a vertical surface, the vertical surface is perpendicular to the page plate, and the vertical surface and the flow guide surface are connected to each other.

[0013] By adopting the above technical solution, the presence of the vertical surface can further guide the flow of the mixture.

[0014] In a preferred embodiment, this application can be further configured such that: the guide block is further provided with a second guide surface, the second guide surface is arc-shaped, and the height of the second guide surface near the impeller is greater than the height of the end away from the impeller.

[0015] By adopting the above technical solution, the presence of the second guide surface can further enhance the guiding effect on the mixture during use.

[0016] In a preferred embodiment, the present application may be further configured such that the flow guide is also provided with an exhaust port, and the exhaust port is connected to the separation chamber.

[0017] By adopting the above technical solution, the presence of the vent hole allows the gas to be discharged from the vent hole after the mixture is separated in the separation chamber.

[0018] In a preferred embodiment, the present application may be further configured such that the exhaust port includes an upper exhaust port and a lower exhaust port, wherein the area of ​​the upper exhaust port is larger than the area of ​​the lower exhaust port.

[0019] By adopting the above technical solution, the area of ​​the upper vent is larger than that of the lower vent during use, making it easier for gas to be discharged from the upper vent and resulting in a better gas discharge effect.

[0020] In a preferred embodiment, this application may be further configured such that a separation plate is also provided within the separation cavity.

[0021] By adopting the above technical solution, the mixed liquid in the separation chamber comes into contact with the separation plate during the movement, thereby improving the separation effect.

[0022] This application discloses a water pump, including any of the above-mentioned self-priming structures. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this application.

[0024] Figure 2 This is a cross-sectional structural diagram of this application.

[0025] Figure 3 This is a schematic diagram of the guide vane structure of this application.

[0026] Figure 4 This is a schematic diagram of the back structure of the guide vane in this application.

[0027] Figure 5 This is a front view structural diagram of the guide vane of this application.

[0028] Figure 6 This is a schematic diagram of the flow guide structure of this application.

[0029] Figure 7 This is a schematic diagram of the back structure of the flow guide in this application.

[0030] Figure 8 This is a cross-sectional structural diagram of the guide vane and guide tube of this application.

[0031] Reference numerals: 1. Impeller; 2. Guide vane; 21. Receiving cavity; 22. Separation cavity; 23. Connecting hole; 24. Positioning groove; 25. Baffle plate; 26. Tightening rib; 27. Exhaust hole; 271. Upper air hole; 272. Lower air hole; 28. Separation plate; 3. Guide vane; 31. Blade; 32. Guide wheel; 321. Positioning column; 33. Through flow channel; 34. Guide tongue; 35. Rotating cavity; 4. Guide block; 41. Guide surface one; 42. Guide surface two; 43. Vertical plane. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1 - Appendix Figure 8 This application will be described in further detail.

[0033] This application discloses a self-priming structure, including a guide vane 3 and a flow guide 2. The flow guide 2 has a partition 25 that divides it into a receiving cavity 21 for accommodating the guide vane 3 and a separation cavity 22 for gas-liquid separation. The partition 25 has a connecting hole 23 for connecting the receiving cavity 21 and the separation cavity 22. The receiving cavity 21 is located in front of the separation cavity 22. The receiving cavity 21 has a positioning groove 24 and a fastening rib 26. The guide vane 3 has a positioning post 321 that matches the positioning groove 24. The guide vane 3 is located within the receiving cavity 21, and its outer edge abuts against the fastening rib 26 to form a tight fit, thereby achieving a fixed installation within the receiving cavity 21.

[0034] The guide vane 3 includes a blade 31 and a guide wheel 32. The guide wheel 32 and the blade 31 are fixedly connected and form a rotating cavity 35 for accommodating the impeller 1. The guide wheel 32 is provided with a flow channel 33, which passes through the guide wheel 32. A portion of the impeller 1 is located within the accommodating cavity 21. The impeller 1 is located in front of the blade 31. A guide tongue 34 is also fixedly provided on the side of the blade 31 away from the impeller 1. There are multiple guide tongues 34, which are evenly distributed circumferentially. A flow channel 33 is provided between adjacent guide tongues 34. The guide tongue 34 is arc-shaped and its side near the partition 25 is in contact with the partition 25.

[0035] A guide block 4 is also provided within the flow channel 33. The guide block 4 corresponds to and is connected to the guide tongue 34. The guide block 4 includes a first guide surface 41 and a second guide surface 42, which are located on both sides of the flow channel 33. Both the first guide surface 41 and the second guide surface 42 are arc-shaped. The first guide surface 41 bends from the end near the impeller 1 to the end away from the impeller 1. The end of the first guide surface 41 away from the impeller 1 is connected to one side wall of the guide tongue 34. The height of the second guide surface 42 near the impeller 1 is greater than the height of the end away from the impeller 1. The inclined surface of the flow channel 33 relative to the first guide surface 41 is connected to the second guide surface 42 and to one side of the guide tongue 34. The guide block 4 is also provided with a vertical surface 43, which is perpendicular to the blade 31 and connected to the first guide surface 41.

[0036] The flow guide 2 is also provided with an exhaust port 27, which is connected to the separation chamber 22. The exhaust port 27 includes an upper air port 271 and a lower air port 272, with the area of ​​the upper air port 271 being larger than that of the lower air port 272. The separation chamber 22 is also provided with separation plates 28, which can be three in total. Two are horizontally and symmetrically arranged, and the other is vertically arranged at the bottom of the separation chamber 22. The included angle between adjacent separation plates 28 is 90 degrees. In another embodiment, two separation plates 28 are horizontally and symmetrically arranged. The side of the separation plate 28 closest to the partition plate 25 is connected to the partition plate 25. The upper air port 271 is located above the horizontally arranged separation plate 28, and the lower air port 272 is located below the horizontally arranged separation plate 28.

[0037] It is worth noting that, Figure 5 The straight arrow in the middle is used to indicate the direction of movement of the water-air mixture.

[0038] This application also discloses a water pump, including the above-mentioned self-priming structure, wherein the flow guide 2 is fixedly installed in the pump body of the water pump.

[0039] The implementation principle of this embodiment is as follows: During use, the rotating impeller 1 discharges a mixture of water and air from the outlet of the impeller 1. Under the guidance of the first guide surface 41, the second guide surface 42, and the vertical surface 43, the gas-liquid mixture flows through the flow channel 33 and is guided by the guide tongue 34 to the connecting hole 23, and then enters the separation chamber 22 from the connecting hole 23, where it comes into contact with the separation plate 28. During this process, the mixture undergoes sufficient gas-liquid separation. A large amount of gas is discharged from the upper air hole 271, while the mixture mixed with a small amount of gas flows downwards. When it passes through the small-area lower air hole 272, further gas-liquid separation occurs, and then it is discharged from the liquid lower air hole 272, finally flowing back to the impeller 1 for the next cycle. During the pump self-priming stage, after the gas-liquid mixture is fully separated by the guide vane 3 and the guide 2, the exhaust time can be effectively shortened, and the pump's self-priming performance can be improved.

[0040] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A self-priming structure, characterized in that: The device includes a guide vane (3) and a flow guide (2). The flow guide (2) has a receiving cavity (21), and the guide vane (3) is fixedly installed in the receiving cavity (21). The flow guide (2) also has a separation cavity (22) and a connecting hole (23) for connecting the receiving cavity (21) and the separation cavity (22). The receiving cavity (21) is located in front of the separation cavity (22), and the impeller (1) is disposed in the receiving cavity (21) and located in front of the guide vane (3). The guide vane (3) includes a blade (31) and a guide wheel. (32) The guide wheel (32) and the blade plate (31) are fixedly connected and form a rotating cavity (35) for accommodating the impeller (1). The guide wheel (32) is provided with a flow channel (33) that passes through the guide wheel (32). The flow guide (2) is also provided with an exhaust hole (27) that is connected to the separation cavity (22). The exhaust hole (27) includes an upper air hole (271) and a lower air hole (272). The area of ​​the upper air hole (271) is larger than the area of ​​the lower air hole (272).

2. The self-priming structure according to claim 1, characterized in that: The side of the blade (31) away from the impeller (1) is also fixedly connected with a guide tongue (34). There are multiple guide tongues (34) and they are evenly distributed around the circumference. At least one flow channel (33) is provided between adjacent guide tongues (34). The guide tongues (34) are arc-shaped.

3. The self-priming structure according to claim 2, characterized in that: The flow channel (33) is further provided with a flow guide block (4), which includes a flow guide surface (41) and the flow guide surface (41) is arc-shaped.

4. The self-priming structure according to claim 3, characterized in that: The guide block (4) is also provided with a vertical surface (43), which is perpendicular to the page plate (31) and is connected to the guide surface (41).

5. A self-priming structure according to claim 3, characterized in that: The guide block (4) is also provided with a second guide surface (42), which is arc-shaped, and the height of the second guide surface (42) near the impeller (1) is greater than the height of the end away from the impeller (1).

6. The self-priming structure according to claim 1, characterized in that: The separation chamber (22) is also provided with a separation plate (28).

7. A water pump, characterized in that, Includes the self-priming structure according to any one of claims 1-6.

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