Wear-resistant impeller and water pump thereof

Abstract

The utility model relates to the technical field of water pumps, in particular to a wear-resistant impeller and a water pump thereof, the wear-resistant impeller comprises an impeller body, a wear-resistant bushing and a positioning pin, the wear-resistant bushing is located on one side, close to a motor output shaft, of the impeller body, and the wear-resistant bushing is embedded in the impeller body and is in interference fit with the impeller body; the wear-resistant bushing is of a hollow structure, and the positioning pin is installed between the impeller body and the wear-resistant bushing. By means of the design mode that the abrasion-resistant bush is embedded in the impeller body, the motor output shaft is directly inserted into the abrasion-resistant bush and makes contact with the abrasion-resistant bush, abrasion consumption of the inner wall of the impeller body can be reduced through the abrasion-resistant bush, relative movement between the impeller body and the motor output shaft is avoided, and the service life of the impeller body is prolonged. Therefore, normal movement of the impeller body is not affected, normal conveying of fluid is not affected, and in addition, the service life of the impeller body can be prolonged.

Description

Technical Field

[0001] This utility model relates to the field of water pump technology, and in particular to a wear-resistant impeller and the water pump thereof. Background Technology

[0002] The impeller is a core rotating component in fluid machinery (e.g., pumps, fans, compressors). Its function is to transfer the mechanical energy of the prime mover (e.g., electric motor, steam turbine) to the working medium (e.g., liquid or gas), enabling the medium to acquire pressure and kinetic energy. As a core component of fluid machinery, the performance of the impeller directly affects the operating efficiency and reliability of the entire equipment. Therefore, various factors must be fully considered during the design, selection, use, and maintenance of the impeller to ensure its normal and efficient operation.

[0003] During operation, impellers are installed inside fluid machinery such as water pumps and connected to external drive components (e.g., motors). These drive components rotate the impeller to transport fluid. Currently, the impeller is directly mounted on the motor's output shaft. However, during high-speed rotation, the impeller's inner wall is prone to wear and tear, causing relative movement between the impeller and the motor's output shaft. This affects the impeller's rotation, consequently impacting fluid transport and reducing its lifespan. Utility Model Content

[0004] In response to the shortcomings of the existing production technology, the applicant provides a wear-resistant impeller and its pump. By improving the impeller structure, the wear and tear on the inner wall of the impeller body can be reduced, ensuring the normal rotation of the impeller, thereby not affecting the normal transport of fluid and improving the service life of the impeller.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A wear-resistant impeller includes: an impeller body, a wear-resistant bushing, and a locating pin. The wear-resistant bushing is located on the side of the impeller body near the motor output shaft and is embedded in the impeller body with an interference fit. The wear-resistant bushing has a hollow structure, and the locating pin is installed between the impeller body and the wear-resistant bushing.

[0007] Therefore, by embedding a wear-resistant bushing inside the impeller body, the motor output shaft is directly inserted into and in contact with the wear-resistant bushing. Compared to the existing installation method where the motor output shaft is directly inserted into and in contact with the impeller body, this method is simpler in structure and easier to operate. The wear-resistant bushing reduces wear on the inner wall of the impeller body, preventing relative movement between the impeller body and the motor output shaft, thus not affecting the normal movement of the impeller body and the normal transport of fluid. In addition, it can also improve the service life of the impeller body. At the same time, the locating pin provides clamping force to the motor output shaft, making the installation between the motor output shaft and the impeller body more tight, thereby further preventing relative movement between the impeller body and the motor output shaft.

[0008] As a further improvement to the above technical solution: two positioning pins are provided, which are arranged opposite to each other; the cross-sectional shape of the positioning pins is circular. Therefore, the two oppositely arranged positioning pins can provide clamping force to the motor output shaft from two directions, so that the motor output shaft and the impeller body are installed more tightly.

[0009] As a further improvement to the above technical solution: the impeller body and the wear-resistant bushing are both provided with semi-circular grooves at positions relative to the locating pin, and the locating pin is inserted into the receiving space formed by the two semi-circular grooves.

[0010] As a further improvement to the above technical solution: a mounting portion is provided on the side of the impeller body away from the wear-resistant bushing, and a gap exists between the mounting portion and the end cover. Therefore, the gap between the mounting portion and the end cover facilitates the installation and removal of the entire wear-resistant impeller relative to the housing.

[0011] As a further improvement to the above technical solution: the impeller body includes: a first cover plate, a second cover plate and a plurality of blades, the two ends of the blades being connected to the first cover plate and the second cover plate respectively, and a flow channel being formed between the first cover plate, the second cover plate and the blades.

[0012] As a further improvement to the above technical solution: the mounting part is installed on the side of the second cover plate away from the blade.

[0013] As a further improvement to the above technical solution: the wear-resistant bushing and the positioning pin are both installed on the side of the first cover plate away from the blade.

[0014] As a further improvement to the above technical solution: a keyway is provided on the inner side of the wear-resistant bushing, and the axis of the keyway is perpendicular to the line connecting the two locating pins. Therefore, during installation, the motor output shaft is inserted into the wear-resistant bushing, and the spline of the motor output shaft is inserted into the keyway. Through the cooperation of the spline and the keyway, it can be ensured that when the motor output shaft rotates, it can drive the wear-resistant bushing and the impeller body to rotate, without causing relative rotation between the motor output shaft and the wear-resistant bushing and impeller body.

[0015] A water pump includes: a wear-resistant impeller, a motor, an end cover, and a housing. The end cover is located on the side of the housing away from the wear-resistant bushing and is connected to the housing. The wear-resistant impeller is installed inside the housing. The motor is located on the side of the housing close to the wear-resistant bushing and is connected to the housing. The output shaft of the motor is inserted into the wear-resistant bushing and is connected to the wear-resistant bushing.

[0016] As a further improvement to the above technical solution: the end cap is provided with a liquid inlet, and the housing is provided with a liquid outlet.

[0017] The beneficial effects of this utility model are as follows:

[0018] By embedding a wear-resistant bushing within the impeller body, the motor output shaft is directly inserted into and contacts the bushing. Compared to existing installation methods where the motor output shaft is directly inserted into and contacts the impeller body, this method is simpler in structure and easier to operate. The wear-resistant bushing reduces wear on the inner wall of the impeller body, preventing relative movement between the impeller body and the motor output shaft, thus ensuring normal impeller movement and fluid transport. Furthermore, it extends the service life of the impeller body. Simultaneously, the locating pin provides clamping force to the motor output shaft, ensuring a tighter fit between the motor output shaft and the impeller body, further preventing relative movement between them.

[0019] This utility model also has the following advantages:

[0020] 1. The two opposing positioning pins of this utility model can provide clamping force to the motor output shaft from two directions, so that the motor output shaft and the impeller body are installed more tightly.

[0021] 2. The gap between the mounting part and the end cover facilitates the installation and disassembly of the entire wear-resistant impeller relative to the housing.

[0022] 3. During installation, the output shaft of the motor is inserted into the wear-resistant bushing, and the spline of the motor output shaft is inserted into the keyway. Through the cooperation between the spline and the keyway, it can be ensured that when the motor output shaft rotates, it can drive the wear-resistant bushing and the impeller body to rotate, without causing relative rotation between the motor output shaft and the wear-resistant bushing and the impeller body. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the wear-resistant impeller of this utility model;

[0024] Figure 2 This is a front view of the wear-resistant impeller of this utility model;

[0025] Figure 3 This is an exploded view of the wear-resistant impeller of this utility model;

[0026] Figure 4 For the present utility model Figure 3 Enlarged schematic diagram of a local structure at point A;

[0027] Figure 5 This is a cross-sectional view of the wear-resistant impeller of this utility model;

[0028] Figure 6 This is a cross-sectional view of the water pump of this utility model.

[0029] Among them: 1. Impeller body;

[0030] 101. Mounting section; 102. First cover plate; 103. Second cover plate; 104. Blade;

[0031] 2. Wear-resistant bushing;

[0032] 201. Keyway;

[0033] 3. Positioning pin;

[0034] 4. Semi-circular groove;

[0035] 5. End caps;

[0036] 501. Liquid inlet;

[0037] 6. Shell;

[0038] 601. Liquid outlet. Detailed Implementation

[0039] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0040] like Figures 1 to 5As shown, a wear-resistant impeller and its water pump include: an impeller body 1, a wear-resistant bushing 2, and a positioning pin 3. The wear-resistant bushing 2 is located on the side of the impeller body 1 near the motor output shaft, and the wear-resistant bushing 2 is embedded in the impeller body 1 and has an interference fit with the impeller body 1. The wear-resistant bushing 2 has a hollow structure, and the positioning pin 3 is installed between the impeller body 1 and the wear-resistant bushing 2. Therefore, by embedding a wear-resistant bushing 2 inside the impeller body 1, the motor output shaft is directly inserted into and in contact with the wear-resistant bushing 2. Compared with the existing installation method where the motor output shaft is directly inserted into and in contact with the impeller body 1, this method is simpler in structure and easier to operate. The wear-resistant bushing 2 can reduce the wear and tear on the inner wall of the impeller body 1, thereby preventing relative movement between the impeller body 1 and the motor output shaft, thus not affecting the normal movement of the impeller body 1 and the normal transport of fluid. In addition, it can also improve the service life of the impeller body 1. At the same time, the positioning pin 3 can provide a clamping force to the motor output shaft, so that the motor output shaft and the impeller body 1 are installed more tightly, thus further preventing relative movement between the impeller body 1 and the motor output shaft.

[0041] In other words, by using the wear-resistant bushing 2, only the wear-resistant bushing 2 will wear down during the operation of the entire wear-resistant impeller, without causing wear down the impeller body 1. This can improve the service life of the impeller body 1. When the wear reaches a certain level, only the wear-resistant bushing 2 needs to be replaced to prevent relative movement between the impeller body 1 and the motor output shaft. In addition, replacing the wear-resistant bushing 2 is more convenient and cost-effective than replacing the impeller body 1. At the same time, because the wear-resistant bushing 2 has longer wear resistance, it has a longer service life and a lower replacement frequency than the impeller body 1. Thus, it has less impact on the overall fluid transport operation of the water pump.

[0042] In this embodiment, two positioning pins 3 are provided, which are arranged opposite to each other; the cross-sectional shape of the positioning pins 3 is circular. Thus, the two oppositely arranged positioning pins 3 can provide clamping force to the motor output shaft from two directions, so that the motor output shaft and the impeller body 1 are installed more tightly.

[0043] In this embodiment, semi-circular grooves 4 are provided at the positions of the impeller body 1 and the wear-resistant bushing 2 relative to the positioning pin 3, and the positioning pin 3 is inserted into the receiving space formed by the two semi-circular grooves 4.

[0044] In this embodiment, a mounting portion 101 is provided on the side of the impeller body 1 away from the wear-resistant bushing 2, and there is a gap between the mounting portion 101 and the end cover 5. Thus, the gap between the mounting portion 101 and the end cover 5 facilitates the installation and removal of the entire wear-resistant impeller relative to the housing 6.

[0045] For example, the gap between the mounting part 101 and the end cover 5 is 0.5mm.

[0046] In this embodiment, the impeller body 1 includes: a first cover plate 102, a second cover plate 103, and a plurality of blades 104. The two ends of the blades 104 are respectively connected to the first cover plate 102 and the second cover plate 103, and a flow channel is formed between the first cover plate 102, the second cover plate 103, and the blades 104. The mounting part 101 is installed on the side of the second cover plate 103 away from the blades 104. The wear-resistant bushing 2 and the positioning pin 3 are both installed on the side of the first cover plate 102 away from the blades 104.

[0047] In this embodiment, a keyway 201 is provided on the inner side of the wear-resistant bushing 2, and the axis of the keyway 201 is perpendicular to the line connecting the two locating pins 3. Thus, during installation, the motor output shaft is inserted into the wear-resistant bushing 2, and the spline of the motor output shaft is inserted into the keyway 201. Through the mutual cooperation between the spline and the keyway 201, it can be ensured that when the motor output shaft rotates, it can drive the wear-resistant bushing 2 and the impeller body 1 to rotate, without causing relative rotation between the motor output shaft and the wear-resistant bushing 2 and the impeller body 1.

[0048] The installation process of the wear-resistant impeller of this utility model is as follows: First, insert the positioning pin 3 into the semi-circular groove 4 of the impeller body 1; then, align the semi-circular groove 4 of the wear-resistant bushing 2 with the positioning pin 3, and insert the wear-resistant bushing 2 into the impeller body 1; finally, align the spline of the motor output shaft with the keyway 201, so as to insert the motor output shaft into the wear-resistant bushing 2, thereby completing the installation between the wear-resistant impeller and the motor output shaft.

[0049] like Figure 6 As shown, a water pump includes: a wear-resistant impeller, a motor (not shown), an end cover 5, and a housing 6. The end cover 5 is located on the side of the housing 6 away from the wear-resistant bushing 2 and is connected to the housing 6. The wear-resistant impeller is installed inside the housing 6. The motor is located on the side of the housing 6 close to the wear-resistant bushing 2 and is connected to the housing 6. The output shaft of the motor is inserted into the wear-resistant bushing 2 and is connected to the wear-resistant bushing 2.

[0050] In this embodiment, the end cap 5 has a liquid inlet 501 and the housing 6 has a liquid outlet 601.

[0051] The working process of this utility model water pump is as follows: First, connect the inlet 501 to the inlet pipe of the fluid and connect the outlet 601 to the outlet of the fluid; finally, start the motor, and drive the impeller body 1 to rotate so that the fluid passes through the inlet 501 and the flow channel in sequence, and is finally discharged through the outlet 601.

[0052] In summary, this utility model, through the design of embedding a wear-resistant bushing 2 inside the impeller body 1, allows the motor output shaft to be directly inserted into and in contact with the wear-resistant bushing 2. Compared to the existing installation method where the motor output shaft is directly inserted into and in contact with the impeller body 1, this method is simpler in structure and easier to operate. The wear-resistant bushing 2 reduces wear on the inner wall of the impeller body 1, thus preventing relative movement between the impeller body 1 and the motor output shaft, thereby not affecting the normal movement of the impeller body 1 and the normal transport of fluid. In addition, it can also improve the service life of the impeller body 1. At the same time, the positioning pin 3 can provide clamping force to the motor output shaft, making the installation between the motor output shaft and the impeller body 1 more tight, thus further preventing relative movement between the impeller body 1 and the motor output shaft.

[0053] The above description is an explanation of the present utility model and not a limitation thereof. The scope of the present utility model is defined by the claims. Within the protection scope of the present utility model, any form of modification may be made.

Claims

1. A wear resistant impeller, characterized by, include: Impeller body (1), and Wear-resistant bushing (2), the wear-resistant bushing (2) is located on the side of the impeller body (1) near the motor output shaft, and the wear-resistant bushing (2) is embedded in the impeller body (1) and is interference-fitted with the impeller body (1). The wear-resistant bushing (2) is a hollow structure. A positioning pin (3) is installed between the impeller body (1) and the wear-resistant bushing (2).

2. The wear resistant impeller of claim 1, wherein: There are two positioning pins (3), and the two positioning pins (3) are arranged opposite to each other; The locating pin (3) has a circular cross-sectional shape.

3. The wear resistant impeller of claim 1, wherein: The impeller body (1) and the wear-resistant bushing (2) are each provided with a semi-circular groove (4) at the position relative to the positioning pin (3), and the positioning pin (3) is inserted into the receiving space formed by the two semi-circular grooves (4).

4. The wear resistant impeller of claim 1, wherein: The impeller body (1) has a mounting part (101) on the side away from the wear-resistant bushing (2), and there is a gap between the mounting part (101) and the end cover (5).

5. The wear resistant impeller of claim 4, wherein: The impeller body (1) includes: A first cover plate (102), a second cover plate (103), and a plurality of blades (104) are provided. The two ends of the blades (104) are connected to the first cover plate (102) and the second cover plate (103) respectively. A flow channel is formed between the first cover plate (102), the second cover plate (103), and the blades (104).

6. The wear resistant impeller of claim 5, wherein: The mounting part (101) is installed on the side of the second cover plate (103) away from the blade (104).

7. The wear resistant impeller of claim 5, wherein: The wear-resistant bushing (2) and the positioning pin (3) are both installed on the side of the first cover plate (102) away from the blade (104).

8. The wear resistant impeller of claim 1, wherein: The wear-resistant bushing (2) has a keyway (201) on its inner side, and the axis of the keyway (201) is perpendicular to the line connecting the two positioning pins (3).

9. A water pump characterized by: include: The wear-resistant impeller, motor, end cap (5), and housing (6) as described in any one of claims 1-8, wherein the end cap (5) is located on the side of the housing (6) away from the wear-resistant bushing (2) and is connected to the housing (6), the wear-resistant impeller is installed inside the housing (6), the motor is located on the side of the housing (6) close to the wear-resistant bushing (2) and is connected to the housing (6), and the output shaft of the motor is inserted into the wear-resistant bushing (2) and connected to the wear-resistant bushing (2).

10. The water pump of claim 9, wherein: The end cap (5) has a liquid inlet (501), and the housing (6) has a liquid outlet (601).

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