Coaxial device for inner and outer magnetic rotors of magnetic drive pump

Abstract

The utility model provides a coaxial device for inner and outer magnetic rotors of a magnetic drive pump, which relates to the field of magnetic drive pumps and comprises a magnetic drive pump body, a pump inner magnetic rotor and a pump outer magnetic rotor, the pump inner magnetic rotor is mounted on the inner side of the magnetic drive pump body, the pump outer magnetic rotor is arranged at the right side end of the pump inner magnetic rotor, and an isolation sleeve is fixed at the outer side end of the pump inner magnetic rotor. A heat conduction ring sleeve is welded to the right side end of the isolation sleeve, a heat conduction ceramic ring is embedded and fixed to the ring face of the inner side of the heat conduction ring sleeve, a liquid storage chamber and branch liquid storage cavities are formed in the heat conduction ring sleeve, the liquid storage chamber communicates with a cooling liquid inlet pipe through an input cavity, and the liquid storage chamber communicates with a cooling liquid outlet pipe through an output cavity; the outer surface of the heat conduction ring sleeve is sleeved with an outer magnetic cylinder. According to the utility model, the problem of demagnetization of the magnetic rotor caused by temperature rise in the magnetic drive pump due to poor thermal conductivity of the rubber pipe film structure in the isolation sleeve in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic pumps, in particular to a coaxial device for inner and outer magnetic rotors of a magnetic pump. Background Art

[0002] The operating principle of a magnetic drive pump primarily relies on the transfer of magnetic force between the inner and outer magnetic rotors. When the motor is started, the inner magnetic rotor begins to rotate. Due to the magnetic field between the inner and outer rotors, the rotation of the inner rotor generates a rotating magnetic field that acts on the outer rotor. This rotating magnetic field also causes the outer rotor to rotate, which in turn drives the impeller inside the pump body, achieving liquid transport. A search revealed prior art (Announcement No.: CN202311844171.8) for a wear-resistant magnetic drive pump. The document states that "the combination of a rubber tube membrane and a buffer air cavity can buffer the impacting liquid output from the first check valve, ensuring a smooth and continuous flow of liquid from the outlet. This ensures a stable increase in positive pressure between the isolation sleeve and the inner rotor sleeve, avoiding interruptions and improving particle intrusion prevention." However, the rubber tube membrane structure within the isolation sleeve in this prior art exhibits poor thermal conductivity, which can cause the magnetic rotor to demagnetize due to rising temperatures within the magnetic pump. Utility Model Content

[0003] In order to overcome the defects of the existing technology, a coaxial device for the inner and outer magnetic rotors of a magnetic pump is provided to solve the problem that the rubber tube membrane structure in the isolation sleeve in the existing technology has poor thermal conductivity, causing the temperature in the magnetic pump to rise and leading to demagnetization of the magnetic rotor.

[0004] In order to achieve the above object, a coaxial device of inner and outer magnetic rotors of a magnetic pump is provided, comprising: a magnetic pump body, an inner magnetic rotor of the pump and an outer magnetic rotor of the pump, wherein the inner magnetic rotor of the pump is installed inside the magnetic pump body, and the outer magnetic rotor of the pump is provided at the right end of the inner magnetic rotor of the pump.

[0005] An isolation sleeve is fixed to the outer end of the magnetic rotor in the pump, a heat-conducting ring sleeve is welded to the right end of the isolation sleeve, a heat-conducting ceramic ring is inlaid and fixed to the inner ring surface of the heat-conducting ring sleeve, a liquid storage chamber and a branch liquid storage chamber are provided inside the heat-conducting ring sleeve, the liquid storage chamber is connected to the coolant inlet pipe through the input cavity, and the liquid storage chamber is connected to the coolant outlet pipe through the output cavity, and the outer surface of the heat-conducting ring sleeve is sleeved with an external magnetic cylinder.

[0006] Furthermore, an external magnetic cylinder is installed inside the magnetic pump body, the right end of the magnetic pump body is connected to the pump external magnetic rotor through a bearing, and the left end surface of the pump internal magnetic rotor is equipped with an impeller.

[0007] Furthermore, the right end of the inner magnetic rotor of the pump is connected to the inner magnetic cylinder, the outer cover of the thermally conductive ceramic ring is connected to the thermally conductive ring sleeve; and the outer surface of the inner magnetic cylinder is in contact with the thermally conductive ceramic ring of the thermally conductive ring sleeve.

[0008] Furthermore, the right end of the outer magnetic rotor of the pump is connected to the motor through a coupling; and the right end of the outer magnetic rotor of the pump passes through the interior of the magnetic pump body.

[0009] Furthermore, the coolant inlet pipe and the coolant outlet pipe are both screwed with sealing covers at one end of the pipe opening; and the sealing covers are distributed on the outer surface of the magnetic pump body.

[0010] Furthermore, the right end of the liquid storage chamber is connected to a branch liquid storage cavity; and the branch liquid storage cavity is distributed in a circular ring shape inside the right side of the heat conductive ring sleeve.

[0011] Furthermore, the input cavity and the output cavity are symmetrically distributed at the upper and lower ends of the liquid storage chamber, and the liquid storage chamber is distributed around the outer side surface of the heat-conducting ceramic ring.

[0012] The beneficial effect of the utility model is that the inner and outer magnetic rotor coaxial device of the magnetic pump of the utility model is connected to the inner magnetic rotor of the magnetic pump by utilizing a cooling structure cover composed of an isolation sleeve and a heat-conducting ring sleeve, and the heat of the inner magnetic cylinder is conducted outwardly through the heat-conducting ceramic ring on the inner ring surface of the heat-conducting ring sleeve, so that the heat conducted outwardly is taken away and absorbed by the coolant in the liquid storage chamber, thereby realizing the inner and outer magnetic rotor coaxial device of the magnetic pump with high heat dissipation function, facilitating the prevention of demagnetization of the magnetic rotor caused by excessive internal temperature of the magnetic pump, facilitating more stable operation of the inner and outer magnetic rotors of the magnetic pump, and improving the service life of the inner and outer magnetic rotor coaxial device of the magnetic pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic front cross-sectional structural diagram of the coaxial device of the inner and outer magnetic rotors of a magnetic pump according to an embodiment of the present utility model.

[0014] Figure 2 This is a schematic front cross-sectional structure diagram of the isolation sleeve and the heat-conducting ring sleeve according to an embodiment of the present utility model.

[0015] Figure 3 This is a schematic diagram of the left side cross-sectional structure of the isolation sleeve and the heat-conducting ring sleeve according to an embodiment of the present utility model.

[0016] Figure 4 This is a schematic diagram of the right side cross-sectional structure of the isolation sleeve and the heat-conducting ring sleeve according to an embodiment of the present utility model.

[0017] In the figure: 1. Magnetic pump body; 11. External magnetic cylinder; 2. Inner magnetic rotor of the pump; 21. Impeller; 22. Inner magnetic cylinder; 3. Coolant inlet pipe; 31. Coolant outlet pipe; 32. Sealing cover; 4. Isolation sleeve; 5. Thermal conductive ring sleeve; 51. Input cavity; 52. Liquid storage chamber; 53. Branch liquid storage chamber; 54. Thermal conductive ceramic ring; 55. Output cavity; 6. External magnetic rotor of the pump; 61. Coupling; 62. Motor. DETAILED DESCRIPTION

[0018] Reference Figures 1 to 4 As shown, the utility model provides a coaxial device of inner and outer magnetic rotors of a magnetic pump, comprising: a magnetic pump body 1, an inner magnetic rotor 2 of the pump and an outer magnetic rotor 6 of the pump. The inner magnetic rotor 2 of the pump is installed on the inner side of the magnetic pump body 1, and the outer magnetic rotor 6 of the pump is provided on the right side of the inner magnetic rotor 2 of the pump.

[0019] An isolation sleeve 4 is fixed to the outer end of the magnetic rotor 2 in the pump, a heat-conducting ring sleeve 5 is welded to the right end of the isolation sleeve 4, a heat-conducting ceramic ring 54 is inlaid and fixed on the inner ring surface of the heat-conducting ring sleeve 5, a liquid storage chamber 52 and a branch liquid storage chamber 53 are provided inside the heat-conducting ring sleeve 5, the liquid storage chamber 52 is connected to the coolant inlet pipe 3 through the input chamber 51, and the liquid storage chamber 52 is connected to the coolant outlet pipe 31 through the output chamber 55, and the outer surface of the heat-conducting ring sleeve 5 is sleeved with an outer magnetic cylinder 11.

[0020] When the inner magnetic rotor 2 and the outer magnetic rotor 6 of the magnetic pump run for a long time, the temperature inside the pump body rises, and the heat-conducting ceramic ring 54 conducts the heat generated by the inner magnetic rotor 2 to the liquid storage chamber 52 and the branch liquid storage chamber 53, so that the heat is absorbed by the coolant in the liquid storage chamber 52 and the branch liquid storage chamber 53, thereby reducing the temperature of the inner and outer magnetic rotors of the magnetic pump when they are coaxially driven.

[0021] In this embodiment, an external magnetic cylinder 11 is mounted within the magnetic pump body 1. The right end of the magnetic pump body 1 is connected to the pump's external magnetic rotor 6 via a bearing. The left end of the pump's internal magnetic rotor 2 is fitted with an impeller 21. The right end of the pump's external magnetic rotor 6 is connected to the motor 62 via a coupling 61. The right end of the pump's external magnetic rotor 6 extends through the interior of the magnetic pump body 1.

[0022] As a preferred embodiment, the external magnetic cylinder 11, the internal magnetic rotor 2 of the pump, the internal magnetic cylinder 22 and the external magnetic rotor 6 of the pump constitute a coaxial transmission mechanism of the internal and external magnetic rotors of the magnetic pump. The external magnetic rotor 6 of the pump is driven to rotate by the motor 62, so that the magnetic force drives the internal magnetic rotor 2 of the pump to rotate, thereby causing the impeller 21 to drive the liquid in the pump to flow.

[0023] In this embodiment, the right end of the inner magnetic rotor 2 of the pump is connected to the inner magnetic cylinder 22 , and the outer cover of the thermal conductive ceramic ring 54 is connected to the thermal conductive ring sleeve 5 ; and the outer surface of the inner magnetic cylinder 22 is in contact with the thermal conductive ceramic ring 54 of the thermal conductive ring sleeve 5 .

[0024] As a preferred embodiment, the heat-conducting ceramic ring 54 conducts the heat generated by the inner magnetic cylinder 22 in contact therewith outward, so that the coolant in the outer inner magnetic cylinder 22 absorbs the heat, thereby preventing the magnetic rotor 2 in the pump from overheating and demagnetizing.

[0025] In this embodiment, a blocking cap 32 is screwed onto one end of each of the coolant inlet pipe 3 and the coolant outlet pipe 31 ; and the blocking cap 32 is located on the outer surface of the magnetic pump body 1 .

[0026] As a preferred embodiment, the coolant inlet pipe 3 and the coolant outlet pipe 31 block the coolant in the liquid storage chamber 52 and the branch liquid storage chamber 53 through the sealing cover 32. The coolant in the liquid storage chamber 52 and the branch liquid storage chamber 53 can be replaced by opening the sealing cover 32.

[0027] In this embodiment, the right side of the liquid storage chamber 52 is connected to a branch liquid storage chamber 53, which is annularly located inside the right side of the heat-conducting ring 5. The liquid storage chamber 52 has an input chamber 51 and an output chamber 55 symmetrically located at its upper and lower ends. The liquid storage chamber 52 is arranged around the outer side of the heat-conducting ceramic ring 54.

[0028] As a preferred embodiment, the input cavity 51 and the output cavity 55 facilitate the introduction and discharge of the coolant into the liquid storage chamber 52 and the branch liquid storage chamber 53. The coolant in the liquid storage chamber 52 and the branch liquid storage chamber 53 absorbs the heat conducted by the heat-conducting ceramic ring 54, thereby achieving a cooling effect, which is convenient for preventing the internal temperature of the magnetic pump from being too high, causing the magnetic rotor to demagnetize.

[0029] The inner and outer magnetic rotor coaxial device of the magnetic pump of the utility model can effectively solve the problem in the prior art that the rubber tube membrane structure in the isolation sleeve has poor thermal conductivity, which causes the temperature in the magnetic pump to rise and lead to the demagnetization of the magnetic rotor. The inner and outer magnetic rotor coaxial device of the magnetic pump with high heat dissipation function is realized, which is convenient for preventing the demagnetization of the magnetic rotor caused by excessively high internal temperature of the magnetic pump, facilitates more stable operation of the inner and outer magnetic rotors of the magnetic pump, and improves the service life of the inner and outer magnetic rotor coaxial device of the magnetic pump. The utility model is suitable for the inner and outer magnetic rotor coaxial device of the magnetic pump.

Claims

1. A coaxial device for inner and outer magnetic rotors of a magnetic pump, comprising: A magnetic pump body (1), a pump inner magnetic rotor (2) and a pump outer magnetic rotor (6), wherein the pump inner magnetic rotor (2) is installed inside the magnetic pump body (1), and the pump outer magnetic rotor (6) is provided at the right end of the pump inner magnetic rotor (2), characterized in that: An isolation sleeve (4) is fixed to the outer end of the magnetic rotor (2) in the pump, a heat-conducting ring sleeve (5) is welded to the right end of the isolation sleeve (4), a heat-conducting ceramic ring (54) is inlaid and fixed on the inner ring surface of the heat-conducting ring sleeve (5), a liquid storage chamber (52) and a branch liquid storage chamber (53) are provided inside the heat-conducting ring sleeve (5), the liquid storage chamber (52) is connected to the coolant inlet pipe (3) through the input chamber (51), and the liquid storage chamber (52) is connected to the coolant outlet pipe (31) through the output chamber (55), and the outer surface of the heat-conducting ring sleeve (5) is sleeved with an outer magnetic cylinder (11).

2. A coaxial device for inner and outer magnetic rotors of a magnetic pump according to claim 1, characterized in that: An external magnetic cylinder (11) is installed inside the magnetic pump body (1), the right end of the magnetic pump body (1) is connected to the pump external magnetic rotor (6) through a bearing, and the left end surface of the pump internal magnetic rotor (2) is equipped with an impeller (21).

3. A coaxial device for inner and outer magnetic rotors of a magnetic pump according to claim 1, characterized in that: The right end of the inner magnetic rotor (2) of the pump is connected to the inner magnetic cylinder (22), and the outer cover of the heat-conducting ceramic ring (54) is connected to the heat-conducting ring sleeve (5); and the outer surface of the inner magnetic cylinder (22) is in contact with the heat-conducting ceramic ring (54) of the heat-conducting ring sleeve (5).

4. The coaxial device of inner and outer magnetic rotors of a magnetic pump according to claim 1, characterized in that: The right end of the pump outer magnetic rotor (6) is connected to the motor (62) via a coupling (61); and the right end of the pump outer magnetic rotor (6) passes through the interior of the magnetic pump body (1).

5. The coaxial device of inner and outer magnetic rotors of a magnetic pump according to claim 1, characterized in that: A blocking cover (32) is screwed onto one end of each of the coolant inlet pipe (3) and the coolant outlet pipe (31); and the blocking cover (32) is located on the outer surface of the magnetic pump body (1).

6. The coaxial device of inner and outer magnetic rotors of a magnetic pump according to claim 1, characterized in that: The right end of the liquid storage chamber (52) is connected to a branch liquid storage chamber (53); and the branch liquid storage chamber (53) is distributed in a circular ring shape inside the right side of the heat-conducting ring sleeve (5).

7. The coaxial device of inner and outer magnetic rotors of a magnetic pump according to claim 1, characterized in that: An input cavity (51) and an output cavity (55) are symmetrically distributed at the upper and lower ends of the liquid storage chamber (52), and the liquid storage chamber (52) is distributed around the outer side surface of the heat-conducting ceramic ring (54).

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