Impeller connecting structure for magnetic drive pump

Abstract

The utility model discloses a kind of impeller connecting structure for magnetic pump, including impeller, installation plate is provided on its lower surface, the installation plate is extended downwards along the lower surface of the impeller;The shaft body is provided below the impeller, for carrying the impeller connected;Connection shaft is provided on the shaft body, the connection shaft is protruded upwards, and the installation plate of the impeller is matched with it.The utility model provides a kind of impeller connecting structure for magnetic pump, buckle on installation plate is matched with the taper surface in mounting hole, forms stable connecting structure, relative to traditional friction connection, it improves the connecting strength, simultaneously due to taper hole processing of mounting hole, the processing of connection shaft is reduced, and then the influence of the strength of connection shaft by additional installation space is reduced, only need to distribute one to two installation plate on impeller and connection shaft to realize installation, it is easy and fast to operate, high in strength, suitable for the use of high-power electromagnetic pump.

Description

Technical Field

[0001] This utility model relates to an impeller connection structure for a magnetic pump. Background Technology

[0002] Currently, magnetic pumps are widely used in the chemical industry due to their advantages such as high temperature and corrosion resistance, strong power system leading to high speed and power. Also, because they are often used in special liquids, the structural requirements of magnetic pumps are becoming more and more stringent, and the speed requirements are becoming more and more demanding.

[0003] Because magnetic pumps are driven by electromagnetic force, the frictional force when the impeller rotates is very small. For ease of assembly, traditional impellers use a straight-body assembly method, such as... Figure 1 and 2 As shown, the connection relies on the friction between the impeller's connecting shaft and the shaft hole. This makes it impossible to guarantee that the impeller assembly connection can remain stable under high torque. Although this installation method is quick and convenient, it affects the power of the magnetic pump. Since the impeller assembly's own connection structure has limited space, a new structure is needed that can be installed quickly, while also enhancing installation strength and maintaining stability during high-speed rotation.

[0004] Traditional installation connections include using connectors or snap-fit ​​methods. However, the connection space between the impeller and the shaft is small. Using connectors would increase the manufacturing process and affect the structural strength of the shaft itself. While snap-fit ​​methods are convenient to install, the small space in the shaft requires space for snap-fit, which also affects the structural strength. Utility Model Content

[0005] This utility model aims to provide an impeller connection structure for a magnetic pump. The impeller assembly is connected by a snap-fit ​​and mounting hole. The snap-fit ​​structure is easy to install and has strong stability. The mounting hole is only machined at the connection point of the shaft, which reduces the machining of all parts of the shaft and reduces the impact of installation space on the strength of the shaft.

[0006] To solve the above problems, the impeller connection structure for a magnetic pump provided by this utility model adopts the following technical solution:

[0007] A magnetic pump impeller connection structure includes an impeller with a mounting plate on its lower surface, the mounting plate extending downward along the lower surface of the impeller; a shaft is provided below the impeller for supporting and connecting the impeller; a connecting shaft is provided on the shaft, the connecting shaft protruding upward and cooperating with the mounting plate of the impeller.

[0008] The mounting plate extends downward and is inserted into the connecting shaft. The bottom of the mounting plate is provided with a buckle that cooperates with the connecting shaft.

[0009] Furthermore, the connecting shaft is provided with mounting holes and assembly holes; the mounting holes are distributed axially, located inside the wall of the connecting shaft, and distributed vertically to provide depth space for the mounting plate; the assembly holes are located at the bottom of the connecting shaft and distributed radially along the connecting shaft to provide assembly space for the mounting plate.

[0010] Furthermore, the assembly hole penetrates the connecting shaft and connects to the mounting hole, with one side of the inner wall being tapered, cooperating with the snap fastener of the mounting plate.

[0011] Furthermore, the buckle extends outward along the side of the mounting plate, with an upper inclined conical surface that mates with the connecting shaft, and a lower inclined surface perpendicular to the upper part, which reduces the space required for installation while enhancing the structural strength of the buckle.

[0012] Furthermore, the width of the mounting plate is less than its thickness.

[0013] Furthermore, multiple mounting plates are provided, arranged in a ring on the impeller.

[0014] Furthermore, the outward extension length of the buckle is not less than half the thickness of the mounting plate.

[0015] Furthermore, the inner diameter of the assembly hole is circular and inclined towards the axial conical surface of the connecting shaft, with the inner diameter becoming smaller and smaller.

[0016] Furthermore, the inner diameter of the assembly hole is non-circular, with one side inclined towards the axial conical surface of the connecting shaft, and the inner diameter becomes smaller and smaller; after machining the conical hole, a round inner hole is machined at the bottom of the conical hole to expand the internal space of the assembly hole.

[0017] Furthermore, the inner diameter of the mounting hole is not less than the thickness of the mounting plate and not greater than 1.5 times the thickness of the mounting plate.

[0018] The beneficial effects of this utility model are as follows: The impeller connection structure for a magnetic pump provided by this utility model forms a stable connection structure by the cooperation of the buckle on the mounting plate and the conical surface in the mounting hole. Compared with the traditional friction connection, the connection strength is improved. At the same time, since the mounting hole is machined with a conical hole, the machining of the connecting shaft is reduced, thereby reducing the impact of the extra installation space on the strength of the connecting shaft. Only one or two mounting plates need to be distributed on the impeller and the connecting shaft to achieve installation. The operation is convenient and quick, and the strength is high, making it suitable for use in high-power electromagnetic pumps. Attached Figure Description

[0019] Appendix Figure 1 This is a schematic diagram of the traditional structure of this utility model.

[0020] Appendix Figure 2 This is an enlarged view of section B in the conventional schematic diagram of this utility model.

[0021] Appendix Figure 3 This is the main sectional view of the present invention.

[0022] Appendix Figure 4 This is an enlarged view of point D in this utility model.

[0023] The components are: 1. impeller, 2. mounting plate, 3. shaft, 4. connecting shaft, 5. snap fastener, 6. mounting hole, and 7. assembly hole. Detailed Implementation

[0024] To better understand the technical solution provided by this utility model, the present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0025] As shown in the attached figure, the present invention provides an impeller connection structure for a magnetic pump, including an impeller 1, a mounting plate 2 provided on its lower surface, the mounting plate 2 extending downward along the lower surface of the impeller 1; a shaft 3 provided below the impeller 1 for supporting and connecting the impeller 1; a connecting shaft 4 provided on the shaft 3, the connecting shaft 4 protruding upward and cooperating with the mounting plate 2 of the impeller 1;

[0026] The mounting plate 2 extends downward and is inserted into the connecting shaft 4. The bottom of the mounting plate 2 is provided with a buckle 5, which cooperates with the connecting shaft 4.

[0027] Furthermore, the connecting shaft 4 is provided with mounting holes 6 and assembly holes 7; the mounting holes 6 are distributed axially and are located inside the wall of the connecting shaft 4, and are distributed vertically to provide depth space for the mounting plate 2; the assembly holes 7 are located at the bottom of the connecting shaft 4 and are distributed radially along the connecting shaft 4 to provide assembly space for the mounting plate 2.

[0028] Furthermore, the assembly hole 7 penetrates the connecting shaft 4 and connects to the mounting hole 6. One side of the inner wall is tapered and cooperates with the buckle 5 of the mounting plate 2.

[0029] Furthermore, the buckle 5 extends outward along the side of the mounting plate 2, with an upper inclined conical surface that cooperates with the connecting shaft 4, and a lower inclined surface perpendicular to the upper part, which reduces the space required for installation and enhances the structural strength of the buckle 5.

[0030] Furthermore, the width of the mounting plate 2 is smaller than its thickness.

[0031] Furthermore, multiple mounting plates 2 are provided and arranged in a ring on the impeller 1.

[0032] Furthermore, the outward extension length of the buckle 5 is not less than half the thickness of the mounting plate 2.

[0033] Furthermore, the inner diameter of the assembly hole 7 is circular and inclined towards the axial conical surface of the connecting shaft 4, with the inner diameter becoming smaller and smaller.

[0034] Furthermore, the inner diameter of the assembly hole 7 is non-circular, with one side inclined towards the axial conical surface of the connecting shaft 4, and the inner diameter becomes smaller and smaller; after the conical hole is processed, a round inner hole is processed at the bottom of the conical hole to expand the internal space of the assembly hole 7.

[0035] Furthermore, the inner diameter of the mounting hole 7 is not less than the thickness of the mounting plate 2, and not greater than 1.5 times the thickness of the mounting plate 2.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and not to limit the technical solutions. Those skilled in the art should understand that any modifications or equivalent substitutions to the technical solutions of this utility model that do not depart from the spirit and scope of this technical solution should be covered within the scope of the claims of this utility model.

Claims

1. An impeller connection structure for a magnetic pump, characterized in that, The device includes an impeller with a mounting plate on its lower surface extending downward along the lower surface of the impeller; a shaft is provided below the impeller for supporting and connecting the impeller; a connecting shaft is provided on the shaft, the connecting shaft protruding upward and cooperating with the mounting plate of the impeller. The mounting plate extends downward and is inserted into the connecting shaft. The bottom of the mounting plate is provided with a buckle that cooperates with the connecting shaft.

2. The impeller connection structure for a magnetic pump according to claim 1, characterized in that, The connecting shaft is provided with mounting holes and assembly holes; the mounting holes are distributed axially and located inside the wall of the connecting shaft, and are distributed vertically to provide depth space for the mounting plate; the assembly holes are located at the bottom of the connecting shaft and are distributed radially along the connecting shaft to provide assembly space for the mounting plate.

3. The impeller connection structure for a magnetic pump according to claim 2, characterized in that, The assembly hole passes through the connecting shaft and connects to the mounting hole. One side of the inner wall is tapered and cooperates with the snap fastener of the mounting plate.

4. The impeller connection structure for a magnetic pump according to claim 1, characterized in that, The buckle extends outward along the side of the mounting plate, with an upper inclined conical surface that mates with the connecting shaft, and a lower inclined surface perpendicular to the upper part. This design reduces the space required for installation while enhancing the structural strength of the buckle.

5. The impeller connection structure for a magnetic pump according to claim 4, characterized in that, The width of the mounting plate is less than its thickness.

6. The impeller connection structure for a magnetic pump according to claim 5, characterized in that, Multiple mounting plates are provided and arranged in a ring on the impeller.

7. The impeller connection structure for a magnetic pump according to claim 4, characterized in that, The outward extension length of the buckle is not less than half the thickness of the mounting plate.

8. The impeller connection structure for a magnetic pump according to claim 2, characterized in that, The inner diameter of the assembly hole is circular and tilts towards the axial conical surface of the connecting shaft, with the inner diameter becoming smaller and smaller.

9. The impeller connection structure for a magnetic pump according to claim 2, characterized in that, The inner diameter of the assembly hole is non-circular, with one side inclined towards the axial conical surface of the connecting shaft, and the inner diameter becomes smaller and smaller; after machining the conical hole, a round inner hole is machined at the bottom of the conical hole to expand the internal space of the assembly hole.

10. The impeller connection structure for a magnetic pump according to claim 2, characterized in that, The inner diameter of the mounting hole is not less than the thickness of the mounting plate and not more than 1.5 times the thickness of the mounting plate.

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