Flexible impeller

Abstract

The invention relates to a flexible impeller, and relates to the technical field of impellers, the flexible impeller comprises a first cover plate, a second cover plate and blades, the blades are located between the first cover plate and the second cover plate, the blades are deformable and are connected with the first cover plate and the second cover plate, and adjusting devices are arranged on the blades. The adjusting device is used for adjusting the distance between the first cover plate and the second cover plate. The pump has the advantage that the efficiency of the pump can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of impellers, in particular to a flexible impeller. BACKGROUND

[0002] As the core equipment in the field of fluid transportation, centrifugal pumps are widely used in industrial cooling, agricultural irrigation, municipal water supply, chemical processes, energy systems and other fields. Its performance mainly depends on the hydraulic design of the impeller, and the specific speed (Specific Speed, ns) is a key parameter to measure the geometric characteristics and operating characteristics of the impeller, which directly affects the efficiency, head and flow characteristics of the pump. The traditional centrifugal pump impeller is made of rigid metal or composite material, and its geometric shape (such as blade angle, outlet width, wheel diameter ratio, etc.) is fixed at the time of manufacturing, which determines the specific speed of the impeller at the design stage. Therefore, when the pump deviates from the design operating point, the efficiency of the pump will decrease.

[0003] Patent No. ZL202110553368.0 proposes a flexible guide vane structure for a mixed-flow pump with adjustable flow area, a mixed-flow pump and an adjusting method, which improves the performance efficiency of the mixed-flow pump by adjusting the flow area of the guide vane in the operation process of the mixed-flow pump, and realizes the operation of the mixed-flow pump in the wide and efficient area. However, this technology is aimed at the guide vane structure in the static state, and is suitable for mixed-flow water pumps, which is not suitable for centrifugal pumps. SUMMARY

[0004] In view of the deficiencies of the prior art, one of the purposes of the present application is to provide a flexible impeller which has the advantage of improving the efficiency of the pump.

[0005] The above purpose of the present application is achieved by the following technical solution:

[0006] A flexible impeller, comprising a cover plate one, a cover plate two and a blade, the blade is located between the cover plate one and the cover plate two, the blade is deformable and connected with the cover plate one and the cover plate two, and the blade is provided with an adjusting device, the adjusting device is used to adjust the distance between the cover plate one and the cover plate two.

[0007] By adopting the above technical solution, in use, by adjusting the distance between the cover plate one and the cover plate two, since the blade is deformable and connected with the cover plate one and the cover plate two, the inlet and outlet widths of the blade are adjusted to realize the function of dynamic adjustment of the specific speed, thereby improving the efficiency of the pump.

[0008] In a preferred example, the present application can be further configured as: the adjusting device comprises a moving block and a driving assembly for driving the moving block to move, the moving block is connected with the cover plate one, and the driving assembly is used to adjust the moving block to approach or move away from the cover plate two.

[0009] By adopting the technical scheme, when adjustment is needed, the moving block is driven to approach the cover plate II by the driving assembly, so that the distance between the cover plate I and the cover plate II can be adjusted.

[0010] In a preferred example, the driving assembly comprises an adjusting rod and a driving piece, the driving piece is used to drive the adjusting rod to rotate, the adjusting rod is threadedly connected with the moving block, and the cover plate I is additionally provided with an adjusting hole for the adjusting rod to extend out.

[0011] By adopting the technical scheme, the adjusting rod is driven to rotate by the driving piece, and the moving block moves when the adjusting rod rotates because the moving block is threadedly connected with the adjusting rod.

[0012] In a preferred example, the application further comprises a stabilizing mechanism, one end of the stabilizing mechanism is in contact with the cover plate I, the other end is in contact with the cover plate II, and the stabilizing mechanism is used to make the cover plate I and the cover plate II exist a force away from each other.

[0013] By adopting the technical scheme, the stabilizing mechanism makes the cover plate I and the cover plate II exist a force away from each other, so that the cover plate I and the cover plate II are more stable when being adjusted in cooperation with the adjusting device.

[0014] In a preferred example, the stabilizing mechanism comprises an elastic assembly and a stabilizing piece, the stabilizing piece has two groups, one group is in abutment with the cover plate I, the other group is in abutment with the cover plate II, the two groups of stabilizing pieces are connected with the elastic assembly, and the elastic assembly makes the two groups of stabilizing pieces exist a trend of moving away from each other.

[0015] By adopting the technical scheme, the existence of the elastic assembly makes the two groups of stabilizing pieces always keep in contact with the corresponding cover plate.

[0016] In a preferred example, the elastic assembly comprises a stabilizing seat, the stabilizing seat is provided with a stabilizing cavity, the two groups of stabilizing pieces are extended into the stabilizing cavity, the stabilizing cavity is provided with an elastic piece, one end of the elastic piece is connected with one group of stabilizing pieces, the other end of the elastic piece is connected with the other group of stabilizing pieces, and the elastic piece is in a compressed state.

[0017] By adopting the technical scheme, the existence of the stabilizing cavity and the elastic piece makes the stabilizing pieces more convenient to move.

[0018] The adjusting device further comprises a hinged rod and a fixed plate, the fixed plate and the driving member are fixedly connected, the moving plate is hinged with the hinged rod on both sides of the fixed plate, the other end of the hinged rod on the right side of the adjusting rod is hinged with the elastic assembly on the right side of the adjusting rod, the other end of the hinged rod on the left side of the adjusting rod is hinged with the elastic assembly on the left side of the adjusting rod, and the hinged rod on the left side of the adjusting rod and the hinged rod on the right side of the adjusting rod or the extension thereof form a parallelogram.

[0019] By adopting the technical scheme, in use, when the moving plate moves, the hinged rod hinged on the moving plate and the fixed plate moves under force, so that the stabilizing mechanism moves, and the adjustment is more stable.

[0020] The blade further comprises a guide section, and the guide section is provided with a support member.

[0021] By adopting the technical scheme, the support member is provided, so that the guide section has better use effect. BRIEF DESCRIPTION OF DRAWINGS

[0022] Fig. 1 is a schematic view of a blade structure of the application.

[0023] Fig. 2 is a schematic view of an adjusting device structure of the application.

[0024] Fig. 3 is a schematic view of a stabilizing mechanism structure of the application.

[0025] Fig. 1 is a schematic view of a blade structure of the application. Fig. 2 is a schematic view of an adjusting device structure of the application. Fig. 3 is a schematic view of a stabilizing mechanism structure of the application. Fig. 4 is a schematic view of a blade structure of the application. Fig. 5 is a schematic view of an adjusting device structure of the application. Fig. 6 is a schematic view of a stabilizing mechanism structure of the application. DETAILED DESCRIPTION

[0026] The application will be further described in detail below with reference to the drawings.

[0027] REFERENCE Figs. 1-3The flexible impeller disclosed in the application comprises cover plate one 31, cover plate two 32 and blades 1, the blades 1 are located between the cover plate one 31 and the cover plate two 32, the blades 1 are deformable and connected with the cover plate one 31 and the cover plate two 32, the blades 1 are provided with adjusting devices 2, the adjusting devices 2 are used for adjusting the distance between the cover plate one 31 and the cover plate two 32. The blades 1 can be made of flexible materials, such as rubber. The blades 1 comprise flow guide sections 11, the flow guide sections 11 are provided with support members 111. The support members 111 can be made of metal or plastic materials.

[0028] The adjusting devices 2 comprise moving blocks 212 and driving assemblies 21 for driving the moving blocks 212 to move, the driving assemblies 21 comprise adjusting rods 211 and driving members 214, in the embodiment, the driving members 214 can be motors, the driving members 214 are used for driving the adjusting rods 211 to rotate, the adjusting rods 211 are threadedly connected with the moving blocks 212, the cover plate one 31 is further provided with adjusting holes 216 for the adjusting rods 211 to extend out. The moving blocks 212 are connected with the cover plate one 31, the driving assemblies 21 are used for adjusting the moving blocks 212 to move close to or away from the cover plate two 32. The cover plate two 32 is provided with accommodating cavities 321, the accommodating cavities 321 are provided with power supplies and control boards, the power supplies are used for supplying power to the driving members 214, the control boards are used for controlling the driving members 214 to work.

[0029] Both sides of the adjusting devices 2 are provided with stabilizing mechanisms 22, the adjusting devices 2 comprise hinge rods 215 and fixed plates 213, the fixed plates 213 are fixedly connected with the driving members 214, the fixed plates 213 are provided with holes for the adjusting rods 211 to extend out, the moving plates and the fixed plates 213 are both hingedly connected with the hinge rods 215, the hinge rods 215 are used for being hingedly connected with the stabilizing mechanisms 22.

[0030] The stabilizing mechanisms 22 comprise elastic assemblies and stabilizing members 221, the stabilizing members 221 are divided into two groups, one group abuts against the cover plate one 31, the other group abuts against the cover plate two 32, the two groups of stabilizing members 221 are connected with the elastic assemblies, the elastic assemblies make the two groups of stabilizing members 221 have a tendency to move away from each other.

[0031] The elastic assemblies comprise stabilizing seats 222, the stabilizing seats 222 are provided with stabilizing cavities 2221, the two groups of stabilizing members 221 extend into the stabilizing cavities 2221, the stabilizing cavities 2221 are provided with elastic members 223, one end of the elastic members 223 is connected with one group of stabilizing members 221, the other end of the elastic members 223 is connected with the other group of stabilizing members 221, the elastic members 223 are in a compressed state. In the embodiment, the elastic members 223 can be springs. The stabilizing members 221 and the cover plate one 31 or the cover plate two 32 are in point contact or line contact.

[0032] The other end of the articulated rod 215 on the right side of the adjusting rod 211 is hinged to the elastic assembly on the right side of the adjusting rod 211, the other end of the articulated rod 215 on the left side of the adjusting rod 211 is hinged to the elastic assembly on the left side of the adjusting rod 211, and the articulated rod 215 on the left side of the adjusting rod 211 and the articulated rod 215 on the right side of the adjusting rod 211 or the extension thereof form a parallelogram.

[0033] The implementation principle of the embodiment is that: in use, the spacing between the cover plate one 31 and the cover plate two 32 is adjusted according to actual needs, so that the dynamic adjustable function of the specific speed is realized, and the efficiency of the pump is improved.

[0034] The embodiments of the specific embodiment are the preferred embodiments of the application, but do not limit the protection scope of the application, so: any equivalent changes made according to the structure, shape, principle of the application should be covered within the protection scope of the application.

Claims

1. A flexible impeller, characterized in that: It includes a cover plate one (31), a cover plate two (32) and a blade (1). The blade (1) is located between the cover plate one (31) and the cover plate two (32). The blade (1) is deformable and connected to the cover plate one (31) and the cover plate two (32). The blade (1) is provided with an adjustment device (2) for adjusting the distance between the cover plate one (31) and the cover plate two (32).

2. The flexible impeller according to claim 1, characterized in that: The adjustment device (2) includes a moving block (212) and a drive assembly (21) for moving the moving block (212). The moving block (212) is connected to the cover plate one (31). The drive assembly (21) is used to adjust the moving block (212) to move closer to or further away from the cover plate two (32).

3. A flexible impeller according to claim 2, characterized in that: The drive assembly (21) includes an adjusting rod (211) and a drive member (214). The drive member (214) is used to drive the adjusting rod (211) to rotate. The adjusting rod (211) and the moving block (212) are threadedly connected. The cover plate (31) is also provided with an adjusting hole (216) for the adjusting rod (211) to extend.

4. A flexible impeller according to claim 3, characterized in that: It also includes a stabilizing mechanism (22), one end of which is in contact with cover plate one (31) and the other end is in contact with cover plate two (32), for creating a force that keeps cover plate one (31) and cover plate two (32) away from each other.

5. A flexible impeller according to claim 4, characterized in that: The stabilizing mechanism (22) includes an elastic component and a stabilizing element (221). There are two sets of stabilizing elements (221), one set abuts against the first cover plate (31) and the other set abuts against the second cover plate (32). Both sets of stabilizing elements (221) are connected to the elastic component. The elastic component causes the two sets of stabilizing elements (221) to tend to move away from each other.

6. A flexible impeller according to claim 5, characterized in that: The elastic component includes a stabilizing base (222), which has a stabilizing cavity (2221). Both sets of stabilizing members (221) extend into the stabilizing cavity (2221). An elastic member (223) is provided in the stabilizing cavity (2221). One end of the elastic member (223) is connected to one set of stabilizing members (221), and the other end is connected to another set of stabilizing members (221). The elastic member (223) is in a compressed state.

7. A flexible impeller according to claim 5, characterized in that: The adjusting device (2) is provided with the stabilizing mechanism (22) on both sides. The adjusting device (2) includes a hinge rod (215) and a fixed plate (213). The fixed plate (213) and the driving member (214) are fixedly connected. The hinge rod (215) is hinged on both sides of the moving plate and the fixed plate (213). The other end of the hinge rod (215) located on the right side of the adjusting rod (211) is hinged to the elastic component located on the right side of the adjusting rod (211). The other end of the hinge rod (215) located on the left side of the adjusting rod (211) is hinged to the elastic component located on the left side of the adjusting rod (211). The hinge rod (215) located on the left side of the adjusting rod (211) and the hinge rod (215) located on the right side of the adjusting rod (211) or their extensions form a parallelogram.

8. A flexible impeller according to claim 1, characterized in that: The blade (1) includes a guide section (11), and a support member (111) is provided inside the guide section (11).

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