Impeller assembly and composite axial flow pump

Abstract

The utility model relates to fluid machinery technical field especially a kind of impeller assembly and composite material axial flow pump.The impeller assembly includes blade and hub, blade is fixed on the outer wall of hub;Connecting cylinder is used to be connected with power shaft, and the outer wall of connecting cylinder is fixed with fin, and connecting cylinder is fixed in hub, and fin is embedded in hub and blade.Through the above structure, the blade strength of the impeller assembly is higher, more difficult to break during use, and connecting cylinder and fin can be more stably connected in hub and blade.The above-mentioned composite material axial flow pump uses the above-mentioned impeller assembly, therefore, the service life of the composite material axial flow pump is longer, and impeller assembly is more convenient to disassemble from pump body.

Description

Technical Field

[0001] This utility model relates to the field of fluid machinery technology, and in particular to an impeller assembly and a composite material axial flow pump. Background Technology

[0002] Carbon fiber composite axial flow pumps are widely used in the chemical industry due to the high temperature resistance and high strength of the material, which enables them to operate stably under high temperature and high pressure conditions. In addition, carbon fiber has excellent corrosion resistance and can resist the erosion of corrosive media such as strong acids, strong alkalis and strong oxidants, ensuring long-term stable operation of the pump. It can also ensure that no metal ions come into direct contact with the medium. Due to these characteristics, carbon fiber composite pumps are widely used in the chemical industry, such as lithium iron phosphate raw materials for new energy batteries, titanium dioxide, phosphate chemicals and many other industries.

[0003] The impeller assembly, as the core component of the pump, includes a hub 100 with blades 200 on its outer wall and a connecting cylinder 300 embedded within the hub 100. The connecting cylinder 300 is used to connect to the power shaft to transmit power from the power source to the impeller. Figure 1 and Figure 2 As shown, in the prior art, the outer wall of the connecting cylinder 300 is uniformly provided with a plurality of protrusions 500, and the protrusions 500 are embedded in the hub 100 of the impeller assembly.

[0004] Ideally, with the help of pre-embedded technology and the aforementioned protrusion 500, the connecting cylinder 300 and the hub 100 are completely fixed. However, in actual use, because the contact area between the protrusion 500 and the hub 100 is relatively small, the connection strength between the connecting cylinder 300 and the hub 100 needs to be further enhanced. In addition, the blades 200 of the impeller assembly are made of carbon fiber composite material, and the structural strength of the blades 200 needs to be further improved. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides an impeller assembly and a composite material axial flow pump, comprising: Blades and a hub, wherein the blades are fixed to the outer wall of the hub; A connecting cylinder is used to connect to a drive shaft. Fins are fixed on the outer wall of the connecting cylinder, and the connecting cylinder is fixed inside the hub. The fins are embedded in the hub and the blades.

[0006] Furthermore, in order to better realize this utility model, both the fins and the connecting cylinder are structural components made of hard metal, and the connecting cylinder and the blades are cast onto the outside of the connecting cylinder and the fins.

[0007] Furthermore, in order to better realize this utility model, both the fins and the connecting cylinder are structural components made of stainless steel or duplex steel.

[0008] Furthermore, in order to better realize this utility model, a through hole is provided on the fin.

[0009] Furthermore, in order to better realize this utility model, the number of through holes is multiple, and the multiple through holes are evenly distributed on the fin.

[0010] Furthermore, in order to better realize this utility model, the shape of the fin is adapted to the blade, and the thickness of the fin gradually decreases from the root to the edge, wherein the root is the part where the fin connects with the connecting cylinder.

[0011] Furthermore, in order to better realize this utility model, the number of blades is multiple, and the multiple blades are evenly distributed around the hub. The number of fins is also multiple, and the multiple fins correspond one-to-one with the multiple blades.

[0012] Furthermore, in order to better realize this utility model, the end face of the connecting cylinder is provided with a connecting hole for connecting and installing the fixture.

[0013] Furthermore, in order to better realize this utility model, the connecting hole is a threaded hole, the mounting fixture is a handle including a stud, and the threaded hole is used to screw the stud.

[0014] The composite material axial flow pump provided by this utility model adopts the above-mentioned impeller assembly.

[0015] The beneficial effects of this utility model are reflected in: (1) The impeller assembly provided by this utility model includes a hub, blades, a connecting cylinder and fins. The blades and fins are respectively fixed on the outer walls of the hub and the connecting cylinder. The connecting cylinder is fixedly connected to the hub, and the fins are embedded in the hub and the blades. Through the above structure, the fins are not only embedded in the hub, but also embedded in the blades. With the connection between the connecting cylinder and the hub, the contact and connection area between the embedded part composed of the connecting cylinder and the fins and the overall structure composed of the hub and the blades is larger, so the connection is more stable. This further avoids the relative rotation of the connecting cylinder relative to the hub. Moreover, because the blades are embedded with fins, the overall strength of the blades is higher, thereby reducing the probability of the blades breaking during use. (2) The composite material axial flow pump provided by this utility model includes the above-mentioned impeller assembly, therefore, the service life of the composite material axial flow pump is longer. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the existing impeller assembly mentioned in the background section; Figure 2This is a schematic diagram of a wheel hub with raised strips on its outer wall, as mentioned in the background section. Figure 3 This is a schematic diagram of the impeller assembly provided in an embodiment of the present utility model; Figure 4 for Figure 3 A cross-sectional view of the structure shown; Figure 5 This is a schematic diagram of the embedded part consisting of a connecting cylinder and fins in an embodiment of this utility model; Figure 6 for Figure 5 The sectional view of the embedded part shown.

[0017] Figure label: 100-Hub, 200-Blade, 300-Connecting cylinder, 310-Connecting hole, 400-Fin, 410-Through hole; 500-Raised strip. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Example 1: Reference Figures 3-6 As shown, the impeller assembly provided in this embodiment includes a hub 100, blades 200, a connecting cylinder 300, and fins 400, wherein: The aforementioned hub 100 can be a cylindrical structure. The blades 200 are integrally formed on the outer wall of the hub 100, and the fins 400 are fixed to the outer wall of the connecting cylinder 300 by welding or integral forming. The connecting cylinder 300 is fixedly connected inside the hub 100, and the fins 400 are embedded within the hub 100 and the blades 200. It is worth noting that a keyway is provided on the inner wall of the connecting cylinder 300, which is used for keying with the power shaft, so that the entire impeller assembly is connected to the power shaft.

[0020] An embedded component consisting of a connecting cylinder 300 and fins 400 is defined, and an integral structure consisting of a hub 100 and blades 200 is defined. Through the above structure, the fins 400 are not only embedded in the hub 100, but also embedded in the blades 200. With the connection between the connecting cylinder 300 and the hub 100, the contact and connection area between the embedded component and the integral structure is larger, resulting in a more stable connection. This further prevents the connecting cylinder 300 from rotating relative to the hub 100. Moreover, because the blades 200 have fins 400 embedded in them, the overall strength of the blades 200 is higher, thereby reducing the probability of the blades 200 breaking during use. Therefore, the impeller assembly has higher structural strength and a longer service life.

[0021] Optionally, the fins 400 and connecting cylinder 300 are both structural components made of hard metal, while the connecting cylinder 300 and blades 200 are made of carbon fiber composite material. The hub 100 and blades 200 are cast onto the outside of the connecting cylinder 300 and the fins 400, thereby fixing the blades 200 to the hub 100, fixing the connecting cylinder 300 to the hub 100, and fixing the fins 400 to the hub 100 and the blades 200.

[0022] Optionally, the fins 400 and connecting cylinders 300 are structural components made of stainless steel or duplex steel. That is, the fins 400 and connecting cylinders 300 are made of stainless steel or duplex steel, which has high strength. When the fins 400 of this material are embedded in the hub 100 and the blades 200, the structural strength of the blades 200 can be greatly enhanced.

[0023] More preferably, through holes 410 are provided on the aforementioned fin 400. Since the blade 200 is cast outside the fin 400, during the casting of the blade 200 and hub 100, some of the cast material will flow into the through holes 410. After the cast material cools, connecting pillars will form in the through holes 410, connecting the blade 200 sections on both sides of the fin 400. This further increases the contact and connection area between the fin 400 and the blade 200, making the connection between the fin 400 and the blade 200 more secure. It is worth noting that the fin 400 is inside the blade 200, thus dividing the blade 200 into two sections from the inside, with the fin 400 located between these two sections. Furthermore, multiple through holes 410 are provided on the fin 400, and these through holes 410 are evenly distributed on the fin 400, further ensuring a more secure connection between the fin 400 and the blade 200.

[0024] Optionally, the shape of the fin 400 in this embodiment is adapted to the blade 200, but the outline size of the fin 400 is slightly smaller than that of the blade 200, and the thickness of the fin 400 gradually decreases from the root to the edge. The root refers to the part where the fin 400 is connected to the connecting cylinder 300. This allows the fin 400 to be more firmly connected to the outer wall of the connecting cylinder 300.

[0025] Optionally, a connecting hole 310 is provided on the end face of the connecting cylinder 300. This connecting hole 310 is used to connect an installation fixture. The connecting hole 310 can be understood as a fixture hole. When the impeller assembly is running normally, the connecting hole 310 is not connected to the installation fixture. When it is necessary to disassemble or assemble the impeller assembly within the pump body, the installation fixture is connected to the connecting hole 310, thereby using the installation fixture to disassemble or assemble the impeller assembly. This makes it easier to disassemble or assemble the impeller assembly within the pump body. Specifically, the connecting hole 310 is a threaded hole, and the installation fixture is a handle including a stud. The threaded hole is used to screw the stud. When it is necessary to disassemble or assemble the impeller assembly within the pump body, the stud is screwed into the threaded hole, and then the handle is used to more easily push the impeller assembly into or pull it out of the pump body.

[0026] Example 2: The composite material axial flow pump provided in this embodiment includes the impeller assembly provided in Embodiment 1. Thus, the service life of the composite material axial flow pump is longer, and the impeller assembly is easier to disassemble from the pump body.

[0027] In the description of the embodiments of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "center," "top," "bottom," "top," "bottom," "inner," "outer," "inner side," and "outer side," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. "Inner side" refers to the interior or enclosed area or space. "Outer perimeter" refers to the area surrounding a specific component or specific area.

[0028] In the description of embodiments of this utility model, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first," "second," "third," or "fourth" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0029] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "assembly" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] In the description of the embodiments of this utility model, specific features, structures, materials or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0031] In the description of the embodiments of this utility model, it should be understood that "-" and "~" represent a range of two values, and this range includes the endpoints. For example, "AB" represents a range greater than or equal to A and less than or equal to B. "A~B" represents a range greater than or equal to A and less than or equal to B.

[0032] In the description of the embodiments of this utility model, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An impeller assembly, characterized in that, include: Blades and a hub, wherein the blades are fixed to the outer wall of the hub; A connecting cylinder is used to connect to a drive shaft. Fins are fixed on the outer wall of the connecting cylinder, and the connecting cylinder is fixed inside the hub. The fins are embedded in the hub and the blades.

2. The impeller assembly according to claim 1, characterized in that: Both the fins and the connecting cylinder are structural components made of hard metal, and the connecting cylinder and the blades are cast onto the outside of the connecting cylinder and the fins.

3. The impeller assembly according to claim 2, characterized in that: Both the fins and the connecting cylinder are structural components made of stainless steel or duplex steel.

4. The impeller assembly according to claim 2, characterized in that: The fins have through holes.

5. The impeller assembly according to claim 4, characterized in that: The number of through holes is multiple, and the multiple through holes are evenly distributed on the fin.

6. The impeller assembly according to claim 2, characterized in that: The shape of the fin is adapted to the blade, and the thickness of the fin gradually decreases from the root to the edge, wherein the root is the part where the fin connects with the connecting cylinder.

7. The impeller assembly according to claim 2, characterized in that: The number of blades is multiple, and the multiple blades are evenly distributed around the hub. The number of fins is also multiple, and the multiple fins correspond one-to-one with the multiple blades.

8. The impeller assembly according to any one of claims 2-7, characterized in that: The end face of the connecting cylinder is provided with a connecting hole for connecting and installing fixtures.

9. The impeller assembly according to claim 8, characterized in that: The connecting hole is a threaded hole, and the mounting fixture is a handle including a stud, the threaded hole being used to screw the stud.

10. A composite material axial flow pump, characterized in that: Includes the impeller assembly as described in any one of claims 1-9.

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