Permanent magnet submersible pump and driving mechanism thereof

Abstract

The driving mechanism of the permanent magnet submersible pump comprises a shell, a motor, a driving plate, a heat dissipation assembly and an elastic abutting piece, the motor, the driving plate, the heat dissipation assembly and the elastic abutting piece are installed in the shell, the driving plate is electrically connected with the motor, and the heat dissipation assembly abuts against the inner wall face of the shell. The driving plate is tightly attached to and fixed on the heat dissipation assembly; the elastic abutting piece is located on the side, back on to the heat dissipation assembly, of the driving plate, and the two opposite ends of the elastic abutting piece are bent, extend and are connected to the two opposite sides of the heat dissipation assembly respectively, so that the elastic abutting piece can deform to abut against the inner wall face of the shell. The drive board is fixed in the shell through the elastic abutting piece and the heat dissipation assembly, the structure is simple, assembling is convenient and fast, and the waterproof performance is good.

Description

TECHNICAL FIELD

[0001] The utility model relates to drive pump technical field especially relates to a permanent magnet submersible pump and drive mechanism thereof. BACKGROUND

[0002] The drive mechanism of some submersible pumps includes a cylinder body, a driving member and a motor installed in the cylinder body. In order to avoid the decline of waterproof performance caused by punching the cylinder body for installation, some existing improvements are to fix the driving member in the cylinder body through a tension assembly. The tension assembly includes two tension members connected at opposite ends of the driving member, and the two tension members are connected through screw rod cooperation. However, this kind of part cooperation is more, and it is not conducive to adjust the tension assembly due to the limited space inside the cylinder body. SUMMARY

[0003] The utility model provides a kind of improved drive mechanism of permanent magnet submersible pump and permanent magnet submersible pump with the drive mechanism.

[0004] The utility model provides a kind of drive mechanism of permanent magnet submersible pump, including shell, the motor being installed in the shell, drive board, heat dissipation component and elastic abutting member, the drive board is electrically connected with the motor, the heat dissipation component is abutted with the inner wall surface of the shell, the drive board is fixed on the heat dissipation component tightly;

[0005] The elastic abutting member is located at the side of the drive board away from the heat dissipation component, and the opposite ends of the elastic abutting member are respectively bent and extended and connected to the opposite sides of the heat dissipation component, so that the elastic abutting member can be deformed and abutted on the inner wall surface of the shell.

[0006] In an embodiment, the elastic abutting member includes a strip-shaped abutting portion for abutting the inner wall surface of the shell, and two connecting portions extending outward from the opposite ends of the abutting portion. The two connecting portions are respectively arc-shaped and connected to the opposite sides of the heat dissipation component.

[0007] In an embodiment, in a natural state, the abutting portion is parallel to the central axis of the shell, or inclined relative to the central axis of the shell.

[0008] In an embodiment, the abutting portion extends along the length direction of the heat dissipation component, and the two connecting portions are respectively connected to the opposite sides of the heat dissipation component in the length direction.

[0009] In an embodiment, the abutting portion extends along the width direction of the heat dissipation component, and the two connecting portions are respectively connected to the opposite sides of the heat dissipation component in the width direction.

[0010] In an embodiment, the opposite ends of the elastic abutting member are fixed to the heat dissipation assembly by at least one of welding, buckling and screwing.

[0011] In an embodiment, the heat dissipation assembly comprises a heat dissipation base.

[0012] The surface of the heat dissipation base facing away from the driving plate is adapted to the inner wall of the shell; and / or, the heat dissipation base is internally provided with a plurality of heat dissipation holes penetrating through opposite ends of the heat dissipation base.

[0013] In an embodiment, the shell comprises a first cavity and a second cavity arranged along the length direction of the shell; the driving plate, the heat dissipation assembly and the elastic abutting member are arranged in the first cavity, and the motor is arranged in the second cavity; the second cavity is provided with a motor bearing seat for the motor.

[0014] In an embodiment, the shell is a straight cylindrical shell.

[0015] The utility model further provides a permanent magnet submersible pump which comprises the driving mechanism of any one of the above.

[0016] The utility model has the advantages that the driving plate is fixed in the shell by the elastic abutting member and the heat dissipation assembly, the structure is simple, the assembly is convenient, and the waterproof performance is good. BRIEF DESCRIPTION OF DRAWINGS

[0017] The utility model will be further described in connection with the drawings and embodiments, and the drawings show:

[0018] Figure 1 is a structural schematic view of the driving mechanism of the permanent magnet submersible pump of an embodiment of the utility model;

[0019] Figure 2 is Figure 1 a structural schematic view of an embodiment of the elastic abutting member;

[0020] Figure 3 is Figure 1 a structural schematic view of another embodiment of the elastic abutting member. DETAILED DESCRIPTION

[0021] In order to have a clearer understanding of the technical features, objects and effects of the utility model, the specific implementation mode of the utility model will be described in detail with reference to the drawings.

[0022] As Figure 1 shown, the driving mechanism of the permanent magnet submersible pump of some embodiments of the utility model comprises a shell 10, a motor (not shown) arranged in the shell 10, a driving plate 20, a heat dissipation assembly 30 and an elastic abutting member 40.

[0023] The driving board 20 is electrically connected with the motor to control the start and stop of the motor and the mode. The heat dissipation assembly 30 abuts against the inner wall surface of the shell 10. The driving board 20 is tightly fixed on the heat dissipation assembly 30 so that the heat generated by the driving board 20 can be timely conducted to the heat dissipation assembly 30 to realize heat dissipation. The elastic abutting part 40 is used to elastically abut against the inner wall surface of the shell 10 to position the driving board 20 in the shell 10 in cooperation with the heat dissipation assembly 30.

[0024] Specifically, the shell 10 includes a first cavity 110 and a second cavity 120 arranged along the length direction of the shell. The driving board 20, the heat dissipation assembly 30 and the elastic abutting part 40 are arranged in the first cavity 110, and the motor is installed in the second cavity 120. In order to facilitate the installation of the motor, the second cavity 120 is provided with a motor bearing seat 50. The motor bearing seat 50 is preferably located in one end of the second cavity 120 close to the first cavity 110, and the connecting line of the motor can pass through the center through hole of the motor bearing seat 50 to connect the driving board 20.

[0025] Further, the shell 10 can be formed by connecting a first shell and a second shell. The first cavity 110 is formed in the first shell, and the second cavity 120 is formed in the second shell.

[0026] In an embodiment, the shell 10 is a straight cylinder shell, which can further be a circular straight cylinder or a polygonal straight cylinder.

[0027] The shell 10 can also be filled with insulating oil, which can prevent the generation of electric arc, improve the heat dissipation effect, and reduce the thermal expansion and contraction effect that may be generated.

[0028] The heat dissipation assembly 30 has opposite mounting surface and bearing surface. In the first cavity 110 of the shell 10, the mounting surface of the heat dissipation assembly 30 abuts against the inner wall surface of the shell to be positioned in the shell 10. The mounting surface of the heat dissipation assembly 30 is preferably matched with the inner wall surface of the shell 10 to increase the mounting surface of the heat dissipation assembly 30, which can be more stably matched in the shell 10, and the heat transferred from the driving board 20 to the heat dissipation assembly 30 can also be transferred to the shell 10 and then to the external environment.

[0029] In combination Figures 1 to 3 The heat dissipation assembly 30 further includes a heat dissipation base 31. The heat dissipation base 31 has two opposite surfaces to form the mounting surface and the bearing surface of the heat dissipation assembly 30. The mounting surface of the heat dissipation base 31 abuts against the inner wall surface of the shell 10, and the bearing surface is used to bear and tightly abut against the driving board 20.

[0030] The mounting surface of the heat dissipation base 31 is matched with the inner wall surface of the shell 10. For example, when the shell 10 is a cylinder, the mounting surface of the heat dissipation base 31 is arranged as an arc surface corresponding to the inner wall surface of the shell 10, so that the arc-shaped mounting surface can be matched with the inner wall surface of the shell 10.

[0031] The bearing surface of the heat sink base 31 is provided corresponding to the drive plate 20, and can be flat so that the entire drive plate 20 can be attached to the bearing surface. The drive plate 20 can be further fixed to the heat sink base 31 by welding, snap-fitting, or fasteners such as screws.

[0032] In one embodiment, the heat dissipation base 31 may also have a plurality of channels 310 inside, the channels 310 passing through opposite ends of the heat dissipation base 31. The arrangement of the channels 310 increases the heat dissipation area of ​​the heat dissipation base 31, and also allows air circulation, thereby improving heat dissipation efficiency.

[0033] The heat dissipation base 31 can be, but is not limited to, an aluminum base, or it can be made of other materials with good heat dissipation properties.

[0034] The elastic clamping member 40 is located on the side of the drive plate 20 facing away from the heat dissipation assembly 30. The opposite ends of the elastic clamping member 40 are bent and extended and connected to the opposite sides of the heat dissipation assembly 30, allowing the elastic clamping member 40 to deform and abut against the inner wall surface of the housing 10. The mounting surfaces of the elastic clamping member 40 and the heat dissipation assembly 30 are located on opposite sides of the drive plate 20 and are respectively used to abut against the inner wall surface of the housing 10. Thus, the clamping force from both sides can fix the drive plate 20 and the heat dissipation assembly 30 in a predetermined position within the housing 10, replacing the installation method of drilling holes and using fasteners, ensuring the integrity of the housing 10 and improving waterproof performance.

[0035] The elastic abutment 40 is positioned on the drive plate 20 side and connects with the heat dissipation assembly 30, giving the elastic abutment 40 a certain height on that side of the drive plate 20. The elastic abutment 40 changes its height through deformation. In its natural state, the height of the module formed by the heat dissipation assembly 30, the drive plate 20, and the elastic abutment 40 is greater than the inner diameter (or width) of the housing 10. When an external force is applied to reduce the height of the elastic abutment 40, the height of the module formed by the heat dissipation assembly 30, the drive plate 20, and the elastic abutment 40 becomes less than the inner diameter (or width) of the housing 10, allowing the module to enter and exit the housing 10. Inside the housing 10, the elastic abutment 40 returns to its natural state under the action of elastic restoring force, increasing the height of the module formed by the heat dissipation assembly 30, the drive plate 20, and the elastic abutment 40 until it abuts against the inner wall of the housing 10.

[0036] See Figures 1 to 3 The elastic clamping member 40 includes a strip-shaped abutment portion 41 and two connecting portions 42 extending outward from opposite ends of the abutment portion 41. The abutment portion 41 is used to abut against the inner wall surface of the housing 10, and the two connecting portions 42 are respectively connected to opposite sides of the heat dissipation assembly 30 (specifically, the heat dissipation base 31).

[0037] The two connecting portions 42 are arc-shaped, so that the connecting portions 42 and the abutting portion 41 are smoothly connected, and the elastic abutting member 40 will not be broken due to the included angle when it is deformed under force, and it is also helpful for the elastic abutting member 40 to recover after deformation. The arc-shaped connecting portions 42 make the elastic abutting member 40 C-shaped.

[0038] When an external force is applied to the abutting portion 41, the arc-shaped connecting portions 42 can be further bent, that is, the arc radius is smaller, or the two connecting portions 42 can be swung to the side where one of the connecting portions 42 is located, so that the height of the elastic abutting member 40 on the driving plate 20 is reduced, which is beneficial for the elastic abutting member 40 to be installed into the shell 10.

[0039] In the shell 10, the length direction of the heat dissipation base 31 of the heat dissipation assembly 30 is parallel to the length direction (central axis) of the shell 10. In an embodiment, as shown in Figure 2 the length direction of the elastic abutting member 40 is parallel to the length direction of the heat dissipation base 31, that is, the abutting portion 41 extends along the length direction of the heat dissipation base 31 and is above the bearing surface of the heat dissipation base 31 and also spaced from the driving plate 20, and the two connecting portions 42 are connected to the opposite sides of the heat dissipation base 31 in the length direction.

[0040] In another embodiment, the length direction of the elastic abutting member 40 is parallel to the width direction of the heat dissipation base 31, that is, the abutting portion 41 extends along the width direction of the heat dissipation base 31, and the two connecting portions 42 are connected to the opposite sides of the heat dissipation base 31 in the width direction.

[0041] The free end of the connecting portion 42 away from the abutting portion 41 can be fixed to the heat dissipation base 31 by at least one of welding, buckling and screwing.

[0042] The elastic abutting member 40 is preferably an integral structure, which can be made of aluminum sheet or steel sheet.

[0043] Further, in the elastic abutting member 40, the two connecting portions 42 can be symmetrically connected to the opposite ends of the abutting portion 41, or can be asymmetrically connected to the opposite ends of the abutting portion 41.

[0044] In an embodiment, as shown in Figure 2 the two connecting portions 42 have the same length. On the bearing surface of the heat dissipation base 31, the two connecting portions 42 have the same vertical height, so that in the natural state, the abutting portion 41 is parallel to the bearing surface of the heat dissipation base 31 and also parallel to the central axis of the shell 10. In this way, inside the shell 10, the abutting portion 41 has the same abutting force with the inner wall surface of the shell 10 at all positions in the length direction.

[0045] In another embodiment, as shown in Figure 3As shown, the two connecting portions 42 are of different lengths. On the bearing surface of the heat dissipation base 31, the two connecting portions 42 are of different vertical heights, so that the elastic abutting member 40 is inclined relative to the bearing surface of the heat dissipation base 31 and the central axis of the shell 10 in the natural state. The distance between the abutting portion 41 and the bearing surface of the heat dissipation base 31 gradually increases from the connecting portion 42 with the smaller vertical height to the connecting portion 42 with the larger vertical height. In this way, the abutting force of the abutting portion 41 on the inner wall surface of the shell 10 gradually increases from the position with the smaller distance to the position with the larger distance.

[0046] When the module formed by the heat dissipation assembly 30, the driving plate 20 and the elastic abutting member 40 is assembled into the shell 10, the end with the smaller vertical height of the connecting portion 42 is directed towards the inside of the shell 10 and pushed into the shell 10. With the pushing of the abutting portion 41, the abutting force of the elastic abutting member 40 on the inner wall surface of the shell 10 gradually increases, improving the positioning stability of the module in the shell 10.

[0047] The elastic abutting member 40 is preferably of an integral structure and can be made of a metal such as an aluminum sheet or a steel sheet.

[0048] The utility model discloses a permanent magnet submersible pump, including the driving mechanism of above.

[0049] The permanent magnet submersible pump is further a driving integrated permanent magnet submersible pump.

[0050] The above is only the embodiment of the utility model, and does not limit the patent range of the utility model, and the equivalent structure or equivalent flow conversion of the contents of the utility model specification and drawings, or direct or indirect application in other related technical fields, are all included in the patent protection range of the utility model.

Claims

1. A driving mechanism of a permanent magnet submersible pump, characterized by, The drive mechanism comprises a shell, a motor installed in the shell, a drive plate, a heat dissipation assembly and an elastic abutting member, the drive plate is electrically connected with the motor, the heat dissipation assembly abuts against the inner wall surface of the shell, and the drive plate is fixedly attached to the heat dissipation assembly; The elastic abutting member is located on the side of the drive plate away from the heat dissipation assembly, and opposite ends of the elastic abutting member are respectively bent and extended and connected to opposite sides of the heat dissipation assembly, so that the elastic abutting member can be deformed to abut against the inner wall surface of the shell.

2. The drive mechanism of a permanent-magnet canned motor pump according to claim 1, characterized in that, The elastic abutting member comprises a strip-shaped abutting portion for abutting against the inner wall surface of the shell, and two connecting portions outwardly extended from opposite ends of the abutting portion; the two connecting portions are respectively arc-shaped and connected to opposite sides of the heat dissipation assembly.

3. The drive mechanism of a permanent-magnet canned motor pump according to claim 2, characterized in that, In a natural state, the abutting portion is parallel to the central axis of the shell or is inclined relative to the central axis of the shell.

4. The drive mechanism of a permanent magnet canned motor submersible pump as claimed in claim 2 wherein, The abutting portion extends along the length direction of the heat dissipation assembly, and the two connecting portions are respectively connected to opposite sides of the heat dissipation assembly in the length direction.

5. The drive mechanism of a permanent magnet canned motor submersible pump as claimed in claim 2 wherein, The abutting portion extends along the width direction of the heat dissipation assembly, and the two connecting portions are respectively connected to opposite sides of the heat dissipation assembly in the width direction.

6. The drive mechanism of a permanent magnet canned motor submersible pump as claimed in claim 1 wherein, The opposite ends of the elastic abutting member are fixed to the heat dissipation assembly by at least one of welding, buckling and screwing.

7. The drive mechanism of a permanent magnet canned motor submersible pump as claimed in claim 1 wherein, The heat dissipation assembly comprises a heat dissipation base; A surface of the heat dissipation base away from the drive plate is adaptively arranged with the inner wall surface of the shell; and / or the heat dissipation base is internally provided with a plurality of heat dissipation holes penetrating through opposite ends of the heat dissipation base.

8. A drive mechanism for a permanent magnet submersible pump according to any one of claims 1-7, characterized in that, The shell comprises a first cavity and a second cavity arranged along the length direction of the shell; the drive plate, the heat dissipation assembly and the elastic abutting member are arranged in the first cavity, and the motor is installed in the second cavity; the second cavity is provided with a motor bearing seat for installing the motor.

9. The drive mechanism of a permanent-magnet canned motor pump according to claim 7, characterized in that, The shell is a straight cylindrical shell.

10. A permanent magnet submersible pump characterized by, The drive mechanism comprises the drive mechanism according to any one of claims 1-9. The drive mechanism comprises the drive mechanism according to any one of claims 1-9.

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