Magnetic drive pump with spacer sleeve
By introducing insulating steam through a gap between the inner and outer isolation sleeves of the magnetic pump, the problem of low heat transfer efficiency of the magnetic pump when conveying easily crystallizing media is solved, achieving effective insulation of the media and preventing crystallization.
Patent Information
- Application Number
- CN202423258691.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2034-12-30
AI Technical Summary
Existing magnetic pumps have low heat transfer efficiency when conveying easily crystallizing media, leading to the problem of media crystallization.
A gap is set between the inner and outer isolation sleeves of the magnetic pump to allow the introduction of heat-insulating steam, forming a steam communication pipeline. The inner and outer isolation sleeves, made of corrosion-resistant alloy material, are used for insulation to prevent the medium from crystallizing.
The medium does not crystallize, thus preventing crystallization and increasing the internal temperature of the thermal isolation sleeve, thereby preventing the medium from crystallizing.
Smart Images
Figure CN223648058U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of magnetic pump technology, and in particular to a magnetic pump with an isolation sleeve. Background Technology
[0002] A magnetic drive pump is a centrifugal pump where an electric motor drives an external magnetic coupler via a coupling. The external magnetic coupler magnetically drives an internal magnetic coupler and the pump shaft to rotate, which in turn drives the impeller at the pump shaft end. The contactless torque transmission between the internal and external magnetic couplers achieves a static seal instead of a dynamic seal, thus achieving leak-free pumping technology. Currently, in the petroleum and chemical industries, most leak-free pumps are canned motor pumps or magnetic drive pumps. When magnetic drive pumps transport easily crystallizing media, an insulation jacket is usually designed on the bearing housing. However, the presence of the external magnetic coupler between the bearing housing and the insulation jacket results in low heat transfer efficiency and inadequate insulation of the media inside the insulation jacket, leading to easy crystallization of the transported media. Utility Model Content
[0003] This invention mainly addresses the technical problems of existing technologies, such as the inability to effectively maintain the temperature of easily crystallizing media during transportation, leading to media crystallization. It proposes a magnetic pump with an isolation sleeve, through which insulating steam can be passed between the inner and outer isolation sleeves to keep the medium inside the isolation sleeve warm and prevent crystallization.
[0004] This utility model provides a magnetic pump with an isolation sleeve, comprising: a motor, a magnetic cylinder, and a pump body; the pump body and the motor are respectively disposed at both ends of the magnetic cylinder; a pump cover is disposed on the pump body near the end of the magnetic cylinder; the magnetic cylinder comprises: an inner magnetic coupler and an outer magnetic coupler;
[0005] An inner isolation sleeve is fitted over the outer side of the inner magnetic coupler; one end of the inner isolation sleeve is welded to the pump cover; an outer isolation sleeve is provided on the side of the pump cover away from the pump body; the outer isolation sleeve is fitted over the inner isolation sleeve.
[0006] The upper part of the pump cover is provided with an insulated steam inlet; the lower end of the pump cover is provided with an insulated steam outlet; the pump cover, the inner isolation sleeve and the outer isolation sleeve form a steam communication pipeline.
[0007] Furthermore, an inner isolation sleeve end cap is provided at the end of the inner isolation sleeve facing away from the pump cover.
[0008] Furthermore, an outer isolation sleeve end cap is provided at the end of the outer isolation sleeve away from the pump cover.
[0009] Furthermore, a gap is provided between the inner and outer isolation sleeves to accommodate heat-insulating steam.
[0010] Furthermore, the diameter of the gap is 2mm-5mm.
[0011] Furthermore, both the inner and outer isolation sleeves are made of corrosion-resistant alloy material.
[0012] Furthermore, the thickness range of the inner and outer isolation sleeves is 0.6mm-1.2mm.
[0013] Furthermore, the inner isolation sleeve does not contact the inner magnetic coupler.
[0014] Furthermore, the outer isolation sleeve is located inside the outer magnetic coupler and does not contact the outer magnetic coupler.
[0015] Compared with the prior art, the magnetic pump with isolation sleeve provided by this utility model allows for the passage of insulating steam between the inner and outer isolation sleeves to keep the medium inside the inner and outer isolation sleeves warm, preventing crystallization. It has a compact structure and solves the problem that the medium inside the isolation sleeve cannot be directly kept warm and is prone to crystallization. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the magnetic pump structure of this utility model;
[0017] Reference numerals: 1. Pump body; 2. Impeller; 3. Insulated steam inlet; 4. Pump cover; 5. External magnetic coupler; 6. Inner isolation sleeve; 7. Outer isolation sleeve; 8. Inner magnetic coupler; 10. Pump shaft; 11. Insulated steam outlet; 12. Inner isolation sleeve end cap; 13. Outer isolation sleeve end cap Detailed Implementation
[0018] To make the technical problems solved by this utility model, the technical solutions adopted, and the technical effects achieved clearer, this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining this utility model and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to this utility model are shown in the accompanying drawings, not all of them.
[0019] like Figure 1 As shown in the figure, the present invention provides a magnetic pump with an isolation sleeve, comprising: a motor, a magnetic cylinder, and a pump body 1; the pump body 1 and the motor are respectively disposed at both ends of the magnetic cylinder; a pump shaft 10 is disposed in the middle of the pump body; an impeller 2 is disposed at the end of the pump shaft near the pump body 1; a pump cover 4 is disposed at the end of the pump body 1 near the magnetic cylinder; the magnetic cylinder comprises: an inner magnetic coupler 8 and an outer magnetic coupler 5;
[0020] An inner isolation sleeve 6 is fitted around the outer side of the inner magnetic coupler 8; one end of the inner isolation sleeve 6 extends through the pump cover 4 and is welded to the side of the pump cover 4 near the pump body 1; an outer isolation sleeve 7 is provided on the side of the pump cover 4 away from the pump body 1; the outer isolation sleeve 7 is fitted over the inner isolation sleeve 6; an inner isolation sleeve end cap 12 is provided at the end of the inner isolation sleeve 6 away from the pump cover 4; the inner isolation sleeve 6 and the inner isolation sleeve end cap 12 are combined to form a barrel shape, and the open end of the inner isolation sleeve 6 is welded to the pump cover 4. An outer isolation sleeve end cap 13 is provided at the end of the outer isolation sleeve 7 away from the pump cover 4. A gap capable of accommodating heat-insulating steam is provided between the inner isolation sleeve 6 and the outer isolation sleeve 7.
[0021] The upper part of the pump cover 4 is provided with a heat-insulating steam inlet 3; the outlet of the heat-insulating steam inlet 3 is located on the pump cover 4, between the inner isolation sleeve 6 and the outer isolation sleeve 7; the lower end of the pump cover 4 is provided with a heat-insulating steam outlet 11; the inlet end of the heat-insulating steam outlet 11 is located on the pump cover 4, between the inner isolation sleeve 6 and the outer isolation sleeve 7; the gap between the heat-insulating steam inlet 3, the heat-insulating steam outlet 11, the inner isolation sleeve 6 and the outer isolation sleeve 7 of the pump cover 4 forms a steam communication pipeline.
[0022] The diameter of the gap is 2mm-5mm, preferably 3mm. Both the inner isolation sleeve 6 and the outer isolation sleeve 7 are made of corrosion-resistant alloy material, preferably Hastelloy C. The thickness of the inner isolation sleeve 6 and the outer isolation sleeve 7 ranges from 0.6mm to 1.2mm.
[0023] The inner isolation sleeve 6 is not in contact with the inner magnetic coupler 8. The outer isolation sleeve 7 is located inside the outer magnetic coupler 5 and is not in contact with the outer magnetic coupler 5.
[0024] 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 it; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications to the technical solutions described in the foregoing embodiments, or equivalent substitutions for some or all of the technical features, do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. A magnetic pump with an isolation sleeve, comprising: The system comprises a motor, a magnetic cylinder, and a pump body (1); the pump body (1) and the motor are respectively provided at both ends of the magnetic cylinder; characterized in that a pump cover (4) is provided near the end of the magnetic cylinder of the pump body (1); the magnetic cylinder includes: an inner magnetic coupler (8) and an outer magnetic coupler (5); An inner isolation sleeve (6) is fitted on the outside of the inner magnetic coupler (8); one end of the inner isolation sleeve (6) is welded to the pump cover (4); an outer isolation sleeve (7) is provided on the side of the pump cover (4) away from the pump body (1); the outer isolation sleeve (7) is fitted on the outside of the inner isolation sleeve (6); The pump cover (4) is provided with a heat-insulating steam inlet (3) at the upper part; the pump cover (4) is provided with a heat-insulating steam outlet (11) at the lower end; the pump cover (4), the inner isolation sleeve (6) and the outer isolation sleeve (7) form a steam communication pipeline.
2. The magnetic pump with an isolation sleeve according to claim 1, characterized in that, The inner isolation sleeve (6) is provided with an inner isolation sleeve end cap (12) at the end opposite to the pump cover (4).
3. The magnetic pump with an isolation sleeve according to claim 1, characterized in that, The outer isolation sleeve (7) is provided with an outer isolation sleeve end cap (13) at one end away from the pump cover (4).
4. The magnetic pump with an isolation sleeve according to claim 1, characterized in that, A gap capable of accommodating heat-insulating steam is provided between the inner isolation sleeve (6) and the outer isolation sleeve (7).
5. The magnetic pump with an isolation sleeve according to claim 4, characterized in that, The diameter of the gap is 2mm-5mm.
6. The magnetic pump with an isolation sleeve according to claim 1, characterized in that, Both the inner isolation sleeve (6) and the outer isolation sleeve (7) are made of corrosion-resistant alloy material.
7. The magnetic pump with an isolation sleeve according to claim 1, characterized in that, The thickness range of the inner isolation sleeve (6) and the outer isolation sleeve (7) is 0.6mm-1.2mm.
8. The magnetic pump with an isolation sleeve according to claim 1, characterized in that, The inner isolation sleeve (6) does not contact the inner magnetic coupler (8).
9. The magnetic pump with an isolation sleeve according to claim 1, characterized in that, The outer isolation sleeve (7) is located inside the outer magnetic coupler (5) and does not contact the outer magnetic coupler (5).