Anti-erosion magnetic drive pump with efficient isolation performance

Abstract

The utility model discloses an anti-erosion magnetic drive pump with efficient isolation, which belongs to the technical field of magnetic drive pumps and comprises a pump body, an isolation sleeve and a stepped sealing ring. Flange plates are arranged at the two ends of the isolation sleeve, the isolation sleeve is connected with the pump body through the flange plates, the isolation sleeve comprises an inner sleeve and an outer sleeve, the inner sleeve is arranged in the outer sleeve and fixedly connected through bolts, the inner sleeve is made of corrosion-resistant materials, the outer sleeve is made of compression-resistant materials, an annular groove is formed in the inner wall of the inner sleeve, and an eddy current restraining piece is embedded in the groove. The stepped sealing ring is arranged at the connecting end of the isolation sleeve and the pump body and sequentially comprises a first-stage ring, a second-stage ring and a third-stage ring from inside to outside, and stepped fall is formed among the rings. According to the magnetic drive pump, pressure resistance and corrosion resistance are both considered, the service life is prolonged, energy loss is reduced, the comprehensive efficiency of the magnetic drive pump is improved, the inner sleeve or the outer sleeve in the isolation sleeve can be rapidly replaced, the maintenance time is shortened, the step sealing ring is adopted, the leakage risk is remarkably reduced, and the maintenance cost is low.

Description

TECHNICAL FIELD

[0001] The utility model relates to magnetic force pump technical field, concretely relates to a kind of magnetic force pumps with high-efficiency isolation property and erosion prevention. BACKGROUND

[0002] As a kind of leakage-free fluid conveying equipment, magnetic force pump is widely used in the field of corrosive medium conveying, such as chemical industry, pharmacy, electroplating, etc. Its core principle is to realize power transmission through the magnetic coupling of inner and outer magnetic rotors, and to completely isolate the medium from the driving end by using an isolation sleeve, thereby avoiding the risk of leakage of mechanical seal. However, most of the existing isolation sleeves are single-layer structures made of metal materials, which have a certain mechanical strength but have corrosion problems. The use of composite materials may also have insufficient compression resistance, and the sealing performance between the isolation sleeve and the pump body needs to be improved. SUMMARY

[0003] The utility model aims to provide a kind of magnetic force pumps with high-efficiency isolation property and erosion prevention to solve the above problems, ensure the structural strength and corrosion resistance of the isolation sleeve, and improve the sealing performance of the magnetic force pump.

[0004] Technical scheme: The utility model provides a kind of magnetic force pumps with high-efficiency isolation property and erosion prevention, comprising: a pump body, an isolation sleeve and a stepped sealing ring. The two ends of the isolation sleeve are flange plates, which are connected to the pump body through the flange plates. The isolation sleeve includes an inner sleeve and an outer sleeve. The inner sleeve is arranged in the outer sleeve and is fixedly connected by bolts. The inner sleeve is made of corrosion-resistant material, and the outer sleeve is made of compression-resistant material. An annular groove is formed in the inner wall of the inner sleeve, and a vortex suppression member is embedded in the groove. The stepped sealing ring is arranged at the connection end of the isolation sleeve and the pump body. From inside to outside, it is a first ring, a second ring and a third ring in sequence, and the rings form a stepped difference.

[0005] Further, the pump body is provided with a cold flow channel, and the pump body is provided with a flow port above.

[0006] Further, the pump body is provided with a cold flow channel, and the pump body is provided with a flow port above.

[0007] Further, the pump body is provided with a cold flow channel, and the pump body is provided with a flow port above.

[0008] Further, the pump body is provided with a cold flow channel, and the pump body is provided with a flow port above.

[0009] Further, the pump body is provided with a cold flow channel, and the pump body is provided with a flow port above. Further, the pump body is provided with a cold flow channel, and the pump body is provided with a flow port above.

[0010] Furthermore, in the aforementioned magnetic pump with high-efficiency isolation and corrosion resistance, the primary ring, secondary ring, and tertiary ring are respectively made of polytetrafluoroethylene-filled glass fiber, graphene-reinforced polyetheretherketone, and fluororubber.

[0011] Furthermore, in the aforementioned magnetic pump with high-efficiency isolation and corrosion resistance, the step height difference between the primary ring, secondary ring, and tertiary ring is 0.5-1.0 mm.

[0012] Furthermore, in the aforementioned magnetic pump with highly efficient isolation and corrosion resistance, the primary ring, secondary ring, and tertiary ring all contain nested redundant O-ring seals.

[0013] As can be seen from the above technical solution, this utility model has the following beneficial effects: The magnetic pump with high-efficiency isolation and corrosion resistance described in this utility model has a simple structure and is easy to use. It adopts a composite isolation sleeve, which takes into account both pressure resistance and corrosion resistance, thus improving service life. The inner sleeve is equipped with an eddy current suppression component, which reduces energy loss and improves the overall efficiency of the magnetic pump. Moreover, the composite isolation sleeve can be quickly replaced with the required inner or outer sleeve, reducing maintenance time. It adopts a stepped sealing ring and a three-level sealing redundancy design, which significantly reduces the risk of leakage. It has a wide applicable temperature range, long service life, and low maintenance cost. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a magnetic pump structure with high-efficiency isolation and corrosion resistance according to the present invention;

[0015] Figure 2 This is a schematic diagram of the cross-section of the isolation sleeve of this utility model;

[0016] Figure 3 This is a schematic diagram of the stepped sealing ring of this utility model.

[0017] In the diagram: Pump body 1, isolation sleeve 2, stepped sealing ring 3, flow port 11, inner sleeve 21, outer sleeve 22, eddy current suppressor 211, primary ring 31, secondary ring 32, tertiary ring 33, O-ring redundant seal 34. Detailed Implementation

[0018] Example 1

[0019] like Figures 1-3The magnetic pump shown includes a highly efficient, corrosion-resistant, and isolation-resistant design, comprising: a pump body 1, an isolation sleeve 2, and a stepped sealing ring 3. The isolation sleeve 2 has flanges at both ends, connecting to the pump body via the flanges. The isolation sleeve 2 includes an inner sleeve 21 and an outer sleeve 22. The inner sleeve 21 is disposed within the outer sleeve 22 and fixedly connected by bolts. The inner sleeve 21 is made of corrosion-resistant material, and the outer sleeve 22 is made of pressure-resistant material. An annular groove is formed on the inner wall of the inner sleeve 21, with a width of 1-3 mm and a depth of 0.5-2 mm. A vortex suppressor 211 is embedded within the groove. The stepped sealing ring 3 is located at the connection end between the isolation sleeve 2 and the pump body 1, consisting of a first-stage ring 31, a second-stage ring 32, and a third-stage ring 33, arranged sequentially from the inside out, forming a stepped drop between the rings. The isolation sleeve 2 adopts a composite structure, combining corrosion resistance and pressure resistance, significantly improving its service life. Furthermore, the inner sleeve 21 and outer sleeve 22 are easy to replace, reducing maintenance time and saving costs.

[0020] like Figure 1 The magnetic pump shown has a high-efficiency isolation and corrosion resistance. The pump body 1 is provided with a cold flow channel and a flow port 11 is provided on the top of the pump body 1.

[0021] In this embodiment, a ceramic coating is applied between the inner sleeve 21 and the outer sleeve 22. After curing, the coating forms a dense anti-corrosion barrier.

[0022] In this embodiment, the eddy current suppressor 211 is a non-conductive ceramic insert. This blocks the eddy current path and reduces energy consumption.

[0023] Example 2

[0024] Based on Example 1, in this example, as... Figure 3 The magnetic pump shown features highly efficient isolation and corrosion resistance. The step height difference between the primary ring 31, secondary ring 32, and tertiary ring 33 is 0.5-1.0 mm. The primary ring 31, secondary ring 32, and tertiary ring 33 are respectively made of polytetrafluoroethylene-filled glass fiber, graphene-reinforced polyetheretherketone, and fluororubber. This design decomposes the pressure gradient, reducing the risk of seal failure. The inner side uses a corrosion-resistant rigid material, while the outer side uses an elastic material, balancing sealing and deformation resistance.

[0025] In this embodiment, O-ring redundant sealing rings 34 are nested inside the primary ring 31, secondary ring 32, and tertiary ring 33. The width of any annular step is 10%-15% larger than the cross-sectional width of the O-ring redundant sealing ring 34. The O-ring redundant sealing ring is made of perfluoroether rubber with a compression rate of 15%-20%.

[0026] like Figure 2 The magnetic pump shown has a high-efficiency isolation and corrosion resistance. A gap of 0.1-0.3mm is reserved between the inner sleeve 21 and the outer sleeve 22 as thermal stress compensation, allowing high-temperature expansion and deformation and avoiding cracking.

[0027] It should be noted that the above description is merely a technical solution of the utility model and not a limitation. Although the present utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of the utility model without departing from the scope of the present utility model, and all such modifications and substitutions should be covered within the scope of the claims of the present utility model.

Claims

1. A magnetic pump with high-efficiency isolation and corrosion resistance, characterized in that: include: Pump body (1); The isolation sleeve (2) has flanges at both ends and is connected to the pump body through the flanges. The isolation sleeve (2) includes an inner sleeve (21) and an outer sleeve (22). The inner sleeve (21) is set inside the outer sleeve (22) and is fixedly connected by bolts. The inner sleeve (21) is made of corrosion-resistant material and the outer sleeve (22) is made of pressure-resistant material. An annular groove is opened on the inner wall of the inner sleeve (21), and a eddy current suppressor (211) is embedded in the groove. The stepped sealing ring (3) is set at the connection end between the isolation sleeve (2) and the pump body (1). From the inside to the outside, it consists of a first-level ring (31), a second-level ring (32), and a third-level ring (33), forming a stepped drop between the rings.

2. The magnetic pump with high-efficiency isolation and corrosion resistance according to claim 1, characterized in that: The pump body (1) is provided with a cold flow channel and a flow port (11) is provided above the pump body (1).

3. A magnetic pump with high-efficiency isolation and corrosion resistance according to claim 1, characterized in that: A gap of 0.1-0.3mm is reserved between the inner sleeve (21) and the outer sleeve (22) as thermal stress compensation to avoid cracking.

4. A magnetic pump with high-efficiency isolation and corrosion resistance according to claim 1, characterized in that: A ceramic coating is applied between the inner sleeve (21) and the outer sleeve (22).

5. A magnetic pump with high-efficiency isolation and corrosion resistance according to claim 1, characterized in that: The inner sleeve (21) has a groove width of 1-3mm and a depth of 0.5-2mm.

6. A magnetic pump with high-efficiency isolation and corrosion resistance according to claim 1, characterized in that: The eddy current suppressor (211) is a non-conductive ceramic insert.

7. A magnetic pump with high-efficiency isolation and corrosion resistance according to claim 1, characterized in that: The primary ring (31), secondary ring (32), and tertiary ring (33) are respectively made of polytetraethylene-filled glass fiber, graphene-reinforced polyetheretherketone, and fluororubber.

8. A magnetic pump with high-efficiency isolation and corrosion resistance according to claim 7, characterized in that: The step height difference between the first-level ring (31), the second-level ring (32), and the third-level ring (33) is 0.5-1.0 mm.

9. A magnetic pump with high-efficiency isolation and corrosion resistance according to claim 8, characterized in that: Each of the first-level ring (31), second-level ring (32), and third-level ring (33) contains a nested O-ring redundant sealing ring (34).

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