Leakage-free magnetic drive pump double-sealing mechanism

Abstract

The utility model provides a leakage-free magnetic drive pump double-sealing mechanism, which relates to the technical field of magnetic drive pumps, and comprises a pump body, a first inner sealing element and a first outer sealing element, an inner cavity is arranged in the pump body, a rotating shaft is arranged in the center of the inner cavity, and the rear end of the rotating shaft is arranged at the front end of a motor; a liquid inlet is formed in the left side of the inner cavity, a left flange is arranged at the left end of the liquid inlet, a first inner sealing piece is installed at the left end of the left flange, a first outer sealing piece is installed outside the first inner sealing piece, a liquid outlet is formed in the upper side of the pump body, and an upper flange is arranged at the upper end of the liquid outlet. A second inner sealing piece is installed at the upper end of the upper flange, and a second outer sealing piece is installed outside the second inner sealing piece. The inlet and the outlet of the leakage-free magnetic drive pump are both of a double-sealing structure, medium conveying is stable and tight, leakage is avoided, and the leakage-free magnetic drive pump is convenient to assemble or disassemble, safer, more flexible and more practical.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic pumps, in particular to a double sealing mechanism of a leakage-free magnetic pump. Background Art

[0002] Leakage-free magnetic drive pumps refer to both shielded and magnetic drive pumps, commonly known as sealless pumps. They utilize modern magnetic mechanics principles, using permanent magnets to achieve contactless torque transmission. They employ an external hybrid axial return structure. When the motor drives the outer rotor assembly, the magnetic field lines pass through the isolation sleeve, driving the inner rotor assembly and impeller to rotate synchronously. The medium is enclosed within the stationary isolation sleeve, achieving leak-free pumping.

[0003] In the specification of a magnetic pump sealing structure in the prior art (Announcement No. CN221610251U), it is mentioned that "a cylinder is fixedly connected to pipe one; it also includes ring one, ring two, a hollow ball, pipe two, a sealing ring and a sealing unit; ring one is fixedly connected to the inner side of pipe one; ring two is fixedly connected to the inner side of the cylinder, and ring two is in contact with ring one; a hollow ball is rotatably connected between ring one and ring two; pipe two is connected to the hollow ball; a sealing ring is provided between pipe one and the cylinder; a sealing unit is commonly connected between the cylinder and pipe two; the sealing unit is used to seal the gap between pipe two and the cylinder". However, the sealing structures in the prior art do not transport the medium smoothly, are not easy to assemble and disassemble flexibly, are inconvenient for later inspection, maintenance or replacement, and are not safe, convenient or practical. Utility Model Content

[0004] In order to overcome the defects of the existing technology, a leakage-free magnetic pump double sealing mechanism is now provided to solve the problems in the existing technology that the medium is not transported smoothly between the sealing structures, and it is not easy to assemble and disassemble flexibly, which makes it inconvenient to inspect, maintain or replace it later, and it is not safe, convenient or practical.

[0005] To achieve the above-mentioned purpose, a leakage-free magnetic pump double sealing mechanism is provided, comprising a pump body, a first inner seal and a first outer seal, an inner cavity being opened in the pump body, and a rotating shaft being arranged at the center of the inner cavity, and the rear end of the rotating shaft being mounted on the front end of the motor, a liquid inlet being arranged on the left side of the inner cavity, and a left flange being arranged at the left end of the liquid inlet, a first inner seal being mounted on the left end of the left flange, and a first outer seal being mounted outside the first inner seal, a liquid outlet being arranged on the upper side of the pump body, and an upper flange being arranged at the upper end of the liquid outlet, a second inner seal being mounted on the upper end of the upper flange, and a second outer seal being mounted outside the second inner seal.

[0006] Furthermore, an outer pressure plate is provided on the right side of the first outer seal, and a plurality of screw holes are provided at the edge of the outer pressure plate, and fastening bolts are installed in the screw holes, and the fastening bolts are a detachable structure.

[0007] Furthermore, an external opening is provided at the center of the external pressure plate, an external sealing sleeve is provided on the left side of the external pressure plate, and an external guide tube is provided on the left side of the external sealing sleeve, and the external guide tube, the external sealing sleeve and the external opening are connected to each other.

[0008] Furthermore, an inner pressure plate is provided on the left side of the first inner sealing member, and an inner opening is provided at the center of the inner pressure plate, and the inner opening is communicated with the outer opening.

[0009] Furthermore, an inner sealing sleeve is provided on the right side of the inner pressure plate, and an inner flow guide tube is provided on the right side of the inner sealing sleeve, and the inner sealing sleeve and the inner flow guide tube are extended into the liquid inlet.

[0010] Furthermore, the first outer seal and the first inner seal are connected separately, and the first outer seal and the second outer seal, the second inner seal and the first inner seal have the same structural arrangement, and the second outer seal and the second inner seal are connected separately.

[0011] The beneficial effects of the present invention are:

[0012] 1. The outer pressure plate on the first outer seal of the utility model can firmly compact the first inner seal to prevent it from loosening, and the medium is transported into the first inner seal through the outer guide tube, the outer sealing sleeve, and the outer opening, which makes the seal more reliable and convenient as an external sealing structure for safety protection.

[0013] 2. The inner pressure plate in the first inner seal of the utility model is used to tightly press the left flange, and the inner sealing sleeve and the inner guide tube extend into the liquid inlet, which makes the medium transportation more sealed, avoids leakage, and is convenient for safety protection as an internal sealing structure.

[0014] 3. In the present invention, the first outer seal and the first inner seal are assembled outside the left flange, which can serve as a double sealing structure for the liquid inlet. At the same time, the second inner seal and the second outer seal are assembled outside the upper flange, which can serve as a double sealing structure for the liquid outlet. The double sealing structure is easy to assemble or disassemble, and is safer, more reliable, convenient and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the first inner seal, the first outer seal, the second inner seal and the second outer seal being installed on the pump body according to an embodiment of the present utility model;

[0016] Figure 2 This is a schematic diagram of the first inner seal and the first outer seal assembled together according to an embodiment of the present utility model;

[0017] Figure 3 This is a schematic diagram of a first inner seal according to an embodiment of the present utility model;

[0018] Figure 4 This is a schematic diagram of the first outer sealing member of an embodiment of the present utility model.

[0019] In the figure: 1. Pump body; 10. Inner cavity; 11. Rotating shaft; 12. Motor; 13. Liquid inlet; 14. Left flange; 15. Liquid outlet; 16. Upper flange; 2. First inner seal; 20. Inner pressure plate; 21. Inner sealing sleeve; 22. Inner guide tube; 23. Inner opening; 3. First outer seal; 30. Outer pressure plate; 31. Outer sealing sleeve; 32. Outer guide tube; 33. Screw hole; 34. Outer opening; 35. Fastening bolt; 4. Second inner seal; 5. Second outer seal. DETAILED DESCRIPTION

[0020] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. The specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. Specific details such as specific system structures and technologies are proposed in order to more thoroughly understand the embodiments of the present invention. The described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. However, it should be clear to those skilled in the art that the present invention can also be implemented in other embodiments without these specific details. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present disclosure.

[0021] The specific implementation of the present utility model will be described in detail below with reference to the accompanying drawings.

[0022] Figure 1 This is a schematic diagram of the first inner seal, the first outer seal, the second inner seal and the second outer seal being installed on the pump body according to an embodiment of the utility model. Figure 2 This is a schematic diagram of the first inner seal and the first outer seal assembled together according to an embodiment of the present invention. Figure 3 Schematic diagram of the first inner seal of the embodiment of the present utility model and Figure 4 This is a schematic diagram of the first outer sealing member of an embodiment of the present utility model.

[0023] Reference Figures 1 to 4As shown, the utility model provides a leakage-free magnetic pump double sealing mechanism, including a pump body 1, a first inner seal 2 and a first outer seal 3. An inner cavity 10 is opened in the pump body 1, and a rotating shaft 11 is arranged in the center of the inner cavity 10, and the rear end of the rotating shaft 11 is installed at the front end of the motor 12. A liquid inlet 13 is provided on the left side of the inner cavity 10, and a left flange 14 is provided at the left end of the liquid inlet 13. The first inner seal 2 is installed at the left end of the left flange 14, and the first outer seal 3 is installed outside the first inner seal 2. A liquid outlet 15 is provided on the upper side of the pump body 1, and an upper flange 16 is provided at the upper end of the liquid outlet 15. A second inner seal 4 is installed at the upper end of the upper flange 16, and a second outer seal 5 is installed outside the second inner seal 4.

[0024] In this embodiment, an outer pressure plate 30 is provided on the right side of the first outer seal 3, and multiple groups of screw holes 33 are provided at the edge of the outer pressure plate 30, and fastening bolts 35 are installed in the screw holes 33, and the fastening bolts 35 are a detachable structure; an outer opening 34 is provided at the center of the outer pressure plate 30, and an outer sealing sleeve 31 is provided on the left side of the outer pressure plate 30, and an outer guide tube 32 is provided on the left side of the outer sealing sleeve 31, and the outer guide tube 32, the outer sealing sleeve 31 and the outer opening 34 are connected.

[0025] As a preferred embodiment, the outer pressure plate 30 on the first outer seal 3 of the utility model can firmly compact the first inner seal 2 so that it cannot loosen, and the medium is transported into the first inner seal 2 through the outer guide tube 32, the outer sealing sleeve 31, and the outer port 34, which is more reliable and convenient as an external sealing structure for safety protection.

[0026] In this embodiment, an inner pressure plate 20 is provided on the left side of the first inner seal 2, and an inner opening 23 is provided in the center of the inner pressure plate 20, and the inner opening 23 is connected to the outer opening 34; an inner sealing sleeve 21 is provided on the right side of the inner pressure plate 20, and an inner guide tube 22 is provided on the right side of the inner sealing sleeve 21, and the inner sealing sleeve 21 and the inner guide tube 22 are extended into the liquid inlet 13.

[0027] As a preferred embodiment, the inner pressure plate 20 in the first inner seal 2 of the utility model tightly presses the left flange 14, and the inner sealing sleeve 21 and the inner guide tube 22 extend into the liquid inlet 13, which makes the medium transportation more sealed, avoids leakage, and is convenient for safety protection as an internal sealing structure.

[0028] In this embodiment, the first outer seal 3 and the first inner seal 2 are split and connected, and the first outer seal 3 and the second outer seal 5, the second inner seal 4 and the first inner seal 2 have the same structural arrangement, and the second outer seal 5 and the second inner seal 4 are split and connected.

[0029] As a preferred embodiment, in the present invention, the first outer seal 3 and the first inner seal 2 are assembled outside the left flange 14, which can serve as a double sealing structure for the liquid inlet 13. At the same time, the second inner seal 4 and the second outer seal 5 are assembled outside the upper flange 16, which can serve as a double sealing structure for the liquid outlet 15. The double sealing structure is easy to assemble or disassemble, and is safer, more reliable, convenient and practical.

[0030] The utility model can effectively solve the problems in the prior art that the medium is not transported smoothly between the sealing structures, and it is not easy to assemble and disassemble flexibly, which makes it inconvenient to overhaul, maintain or replace later, and it is not safe, convenient or practical. The utility model adopts a double sealing structure for the inlet and outlet of the leakage-free magnetic pump, which not only transports the medium stably and tightly to avoid leakage, but also facilitates assembly or disassembly, and is safer, flexible and practical.

[0031] The above embodiments are used to illustrate the present invention rather than to limit the present invention. Any modifications and changes made to the present invention within the spirit of the present invention and the scope of the claims for protection shall be included in the scope of protection of the present invention.

Claims

1. A double sealing mechanism for a leak-free magnetic pump, characterized by: The invention comprises a pump body (1), a first inner seal (2) and a first outer seal (3), wherein an inner cavity (10) is provided in the pump body (1), a rotating shaft (11) is provided in the center of the inner cavity (10), and the rear end of the rotating shaft (11) is mounted on the front end of the motor (12), a liquid inlet (13) is provided on the left side of the inner cavity (10), and a left flange (14) is provided on the left end of the liquid inlet (13), the first inner seal (2) is mounted on the left end of the left flange (14), and the first outer seal (3) is mounted outside the first inner seal (2), a liquid outlet (15) is provided on the upper side of the pump body (1), and an upper flange (16) is provided on the upper end of the liquid outlet (15), a second inner seal (4) is mounted on the upper end of the upper flange (16), and a second outer seal (5) is mounted outside the second inner seal (4).

2. A double sealing mechanism for a leak-free magnetic pump according to claim 1, characterized in that: An outer pressure plate (30) is provided on the right side of the first outer sealing member (3), and a plurality of groups of screw holes (33) are provided at the edge of the outer pressure plate (30), and fastening bolts (35) are installed in the screw holes (33), and the fastening bolts (35) are of a detachable structure.

3. A double sealing mechanism for a leak-free magnetic pump according to claim 2, characterized in that: An external opening (34) is provided at the center of the external pressure plate (30), an external sealing sleeve (31) is provided on the left side of the external pressure plate (30), and an external guide tube (32) is provided on the left side of the external sealing sleeve (31), and the external guide tube (32), the external sealing sleeve (31) and the external opening (34) are connected.

4. The double sealing mechanism of a leak-free magnetic pump according to claim 1, characterized in that: An inner pressure plate (20) is provided on the left side of the first inner sealing member (2), an inner opening (23) is provided at the center of the inner pressure plate (20), and the inner opening (23) is communicated with the outer opening (34).

5. A double sealing mechanism for a leak-free magnetic pump according to claim 4, characterized in that: An inner sealing sleeve (21) is provided on the right side of the inner pressure plate (20), and an inner guide tube (22) is provided on the right side of the inner sealing sleeve (21), and the inner sealing sleeve (21) and the inner guide tube (22) extend into the liquid inlet (13).

6. The double sealing mechanism of a leak-free magnetic pump according to claim 1, characterized in that: The first outer seal (3) and the first inner seal (2) are connected in a split manner, and the first outer seal (3) and the second outer seal (5), and the second inner seal (4) and the first inner seal (2) have the same structural arrangement, and the second outer seal (5) and the second inner seal (4) are connected in a split manner.

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