Novel magnetic fluid sealing water path cooling structure

Abstract

The utility model discloses a novel magnetofluid sealing water path cooling structure, which belongs to the technical field of magnetofluid sealing and comprises a main shaft, a shell is sleeved on the outer side of the main shaft, an oil seal seat is sleeved between the shell and the main shaft and positioned at one end of the shell, and a screw cap is sleeved between the shell and the main shaft and positioned at the other end of the shell. And a framework oil seal is sleeved between the oil seal seat and the main shaft. According to the utility model, cooling water is guided into the annular groove of the pole shoe II through the water nozzle at the lower part, and the cooling water enters the cavity in which the sleeve is positioned from the water through hole at the left side of the annular groove, so that the cooling water is utilized to cool the pole shoe I and the pole shoe II, and in addition, the cooling water flows out through the water nozzle at the upper part after overflowing the gap; and therefore, the magnetic fluid sealing core part can be effectively cooled under the condition of insufficient space, and the practicability is good.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic fluid sealing, and more specifically to a novel magnetic fluid sealing water channel cooling structure. Background Art

[0002] Magnetic fluid sealing technology is developed on the basis of magnetic fluid. When magnetic fluid is injected into the gap of magnetic field, it can fill the entire gap and form a "liquid O-ring". The function of magnetic fluid sealing device is to transfer rotational motion to the sealed container, which is often used for vacuum sealing. However, in the use of magnetic fluid sealing device, some cooling structure design is required. However, the space size provided for magnetic fluid sealing design is limited, and it is not easy to open cooling water channel on the shell. In this case, a novel structure is now adopted, that is, using pole shoes, designing water channels on the pole shoes to replace the water channels on the shell, so as to achieve the cooling of the two pole shoes of magnetic fluid, thereby realizing the cooling of magnetic fluid. For this reason, we propose a new magnetic fluid sealing water channel cooling structure. Utility Model Content

[0003] In view of the problems mentioned in the above background technology, the purpose of the utility model is to provide a new magnetic fluid sealed water circuit cooling structure.

[0004] In order to solve the above problems, the utility model adopts the following technical solutions: a novel magnetic fluid sealing water circuit cooling structure, comprising a main shaft, a shell is sleeved on the outer side of the main shaft, an oil seal seat is sleeved between the shell and the main shaft and at one end of the shell, a rotary cover is sleeved between the shell and the main shaft and at the other end of the shell, a skeleton oil seal is sleeved between the oil seal seat and the main shaft, two bearings are sleeved between the main shaft and the shell, an oil seal spacer is sleeved between the main shaft and the skeleton oil seal, and a There is a shaft clamp, a pole shoe 1 is sleeved between the main shaft and the shell, a pole shoe 2 is sleeved between the main shaft and the shell, a magnetic column is arranged between the pole shoe 1 and the spacer 2, sleeves are sleeved on the ends of the pole shoe 1 and the pole shoe 2, an annular groove is provided on the outer side of the pole shoe 2, a water hole is provided on the inner wall of the annular groove, a spacer 1 is arranged between one bearing and the pole shoe 1, and a spacer 2 is arranged between the other bearing and the pole shoe 2, water nozzles are fixedly installed on the top and the bottom of the shell, and the ends of the water nozzles are connected to the annular groove on the pole shoe 2.

[0005] As a preferred solution of the utility model, the outer sides of the pole shoe 1 and the pole shoe 2 are sleeved with O-rings 3, and the outer sides of the O-rings 3 are in contact with the inner side surface of the sleeve.

[0006] As a preferred solution of the utility model, the outer sides of the pole shoe 2, the oil seal seat and the pole shoe 1 are all sleeved with an O-ring 1, and the outer side surface of the O-ring 1 fits with the inner side surface of the shell.

[0007] As a preferred solution of the utility model, an O-ring 2 is sleeved on the outer side of the shell.

[0008] As a preferred solution of the utility model, a threaded connection hole is provided at one end of the main shaft, and a bayonet connection groove is provided on the outer side of the other end of the main shaft.

[0009] As a preferred solution of the utility model, six mounting holes are opened on the outer side of the shell, and two of the mounting holes are evenly arranged in a circle with the main axis as the axial direction.

[0010] The advantages of the utility model are as follows: in the utility model, cooling water is introduced into the annular groove of the pole shoe two through the water nozzle at the bottom, and the cooling water enters the cavity where the sleeve is located from the water hole on the left side of the annular groove, thereby realizing the use of cooling water to cool the pole shoe one and the pole shoe two; in addition, when the cooling water overflows the gap, it flows out through the water nozzle at the top, thereby realizing the effective cooling of the core part of the magnetic fluid seal when there is insufficient space, and the utility model has good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is an overall cross-sectional schematic diagram of the utility model;

[0012] Figure 2 It is a cross-sectional schematic diagram of the threaded connection hole of the utility model;

[0013] Figure 3 It is a cross-sectional schematic diagram of the bayonet connection groove of the utility model.

[0014] Explanation of the numbers in the figure: 1. Main shaft; 2. Oil seal seat; 3. Skeleton oil seal; 4. Oil seal spacer; 5. Shaft clamp; 6. Bearing; 7. Spacer one; 8. O-ring one; 9. Pole shoe one; 10. O-ring two; 11. O-ring three; 12. Magnetic column; 13. Casing; 14. Water nozzle; 15. Pole shoe two; 16. Spacer two; 17. Screw cover; 18. Shell; 19. Threaded connection hole; 20. Bayonet pin connection groove; 21. Mounting hole; 22. Annular groove; 23. Water hole. DETAILED DESCRIPTION

[0015] The following will clearly and completely describe the technical solutions in the embodiments of the utility model in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0017] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. Embodiment 1:

[0018] See also Figure 1-3 A novel magnetic fluid sealing water circuit cooling structure comprises a main shaft 1, a shell 18 is sleeved on the outer side of the main shaft 1, an oil seal seat 2 is sleeved between the shell 18 and the main shaft 1 and at one end of the shell 18, a rotary cover 17 is sleeved between the shell 18 and the main shaft 1 and at the other end of the shell 18, a skeleton oil seal 3 is sleeved between the oil seal seat 2 and the main shaft 1, two bearings 6 are sleeved between the main shaft 1 and the shell 18, an oil seal spacer 4 is sleeved between the main shaft 1 and the skeleton oil seal 3, a shaft clamp 5 is sleeved on the outer side of the main shaft 1 and at one end of one bearing 6, and a There is a pole shoe 19, a pole shoe 2 15 is sleeved between the main shaft 1 and the shell 18, a magnetic column 12 is arranged between the pole shoe 19 and the spacer 2 16, a sleeve 13 is sleeved on the ends of the pole shoe 19 and the pole shoe 2 15, an annular groove 22 is opened on the outer side of the pole shoe 2 15, and a water hole 23 is opened on the inner wall of the annular groove 22, a spacer 7 is arranged between a bearing 6 and the pole shoe 19, and a spacer 2 16 is arranged between the other bearing 6 and the pole shoe 2 15, and a water nozzle 14 is fixedly installed on the top and the bottom of the shell 18, and the ends of the water nozzle 14 are connected to the annular groove 22 on the pole shoe 2 15.

[0019] In this embodiment, the main shaft 1, pole shoe 1 9 and pole shoe 2 15 can be made of 2Cr13 material, the oil seal seat 2, oil seal gasket 4, gasket 1 7, sleeve 13, water nozzle 14, gasket 2 16, screw cover 17, and shell 18 can be made of 304 stainless steel, the shaft clamp 5 can be made of 65Mn material, and the magnetic column 12 can be made of N42H type magnet material.

[0020] For details, please refer to Figure 1 The outer sides of the pole shoe 1 9 and the pole shoe 2 15 are sleeved with an O-ring 3 11 , and the outer side of the O-ring 3 11 fits with the inner side surface of the sleeve 13 .

[0021] In this embodiment, the sealing between the pole shoe 1 9 and the pole shoe 2 15 and the sleeve 13 is ensured by the O-ring 3 11, and the O-ring 3 11 can be made of fluororubber.

[0022] For details, please refer to Figure 1 The outer sides of the pole shoe 15, the oil seal seat 2 and the pole shoe 9 are all sleeved with an O-ring 8, and the outer side surface of the O-ring 8 fits with the inner side surface of the housing 18.

[0023] In this embodiment, an O-ring 8 is used to ensure the sealing between the oil seal seat 2, the pole shoe 1 9, the pole shoe 2 15 and the housing 18 respectively. The O-ring 8 can be made of fluororubber.

[0024] For details, please refer to Figure 1 The outer side of the housing 18 is sleeved with an O-ring 10 .

[0025] In this embodiment, the O-ring 10 is used to increase the sealing and stability of the housing 18 during installation. The O-ring 10 can be made of fluororubber.

[0026] For details, please refer to Figure 2-3 A threaded connection hole 19 is provided at one end of the main shaft 1, and a bayonet connection groove 20 is provided on the outer side of the other end of the main shaft 1.

[0027] In this embodiment, the two ends of the main shaft 1 are connected respectively through the threaded connection hole 19 and the bayonet connection groove 20.

[0028] For details, please refer to Figure 1 Six mounting holes 21 are formed on the outer side of the housing 18 , and two mounting holes 21 are evenly arranged in a circle with the main shaft 1 as the axial direction.

[0029] In this embodiment, the housing 18 is fixedly installed by utilizing the installation holes 21 .

[0030] Working principle: When in use, two water nozzles 14 are arranged on the shell 18, and the cooling water is introduced into the annular groove 22 of the pole shoe 15 through the lower water nozzle 14, and then the cooling water enters the cavity where the sleeve 13 is located from the water hole 23 on the left side of the annular groove 22, so that the cooling water is used to cool the pole shoe 9, and finally when the cooling water overflows the gap, it flows out from the upper water nozzle 14, thereby reducing the temperature of the sealing part of the magnetic fluid seal, and the core part of the magnetic fluid seal can be effectively cooled when there is insufficient space.

[0031] The above is only a preferred specific implementation method of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed by the utility model according to the technical solution and improved ideas of the utility model, which should be included in the protection scope of the utility model.

Claims

1. A new type of magnetic fluid sealing water circuit cooling structure, characterized by: The invention comprises a main shaft (1), wherein the outer side of the main shaft (1) is sleeved with a housing (18), an oil seal seat (2) is sleeved between the housing (18) and the main shaft (1) and at one end of the housing (18), a screw cap (17) is sleeved between the housing (18) and the main shaft (1) and at the other end of the housing (18), a skeleton oil seal (3) is sleeved between the oil seal seat (2) and the main shaft (1), two bearings (6) are sleeved between the main shaft (1) and the housing (18), an oil seal spacer (4) is sleeved between the main shaft (1) and the skeleton oil seal (3), a shaft clamp (5) is sleeved on the outer side of the main shaft (1) and at one end of one of the bearings (6), a pole shoe (9) is sleeved between the main shaft (1) and the housing (18), and the A second pole shoe (15) is sleeved between the main shaft (1) and the housing (18), a magnetic column (12) is arranged between the first pole shoe (9) and the second spacer (16), sleeves (13) are sleeved on the ends of the first pole shoe (9) and the second pole shoe (15), an annular groove (22) is provided on the outer side of the second pole shoe (15), and a water hole (23) is provided on the inner wall of the annular groove (22), a spacer (7) is arranged between one of the bearings (6) and the first pole shoe (9), and a spacer (16) is arranged between the other bearing (6) and the second pole shoe (15), and water nozzles (14) are fixedly installed on the top and bottom of the housing (18), and the ends of the water nozzles (14) are connected to the annular groove (22) on the second pole shoe (15).

2. According to claim 1, a novel magnetic fluid sealing water circuit cooling structure is characterized in that: The outer sides of the pole shoe one (9) and the pole shoe two (15) are sleeved with an O-ring three (11), and the outer side of the O-ring three (11) fits with the inner side surface of the sleeve (13).

3. According to claim 1, a novel magnetic fluid sealing water circuit cooling structure is characterized in that: The outer sides of the pole shoe 2 (15), the oil seal seat (2) and the pole shoe 1 (9) are all sleeved with an O-ring 1 (8), and the outer side surface of the O-ring 1 (8) fits the inner side surface of the housing (18).

4. According to claim 1, a novel magnetic fluid sealing water circuit cooling structure is characterized in that: The outer side of the housing (18) is sleeved with an O-ring 2 (10).

5. According to claim 1, a novel magnetic fluid sealed water circuit cooling structure is characterized in that: A threaded connection hole (19) is provided at one end of the main shaft (1), and a bayonet connection groove (20) is provided on the outer side of the other end of the main shaft (1).

6. The novel magnetic fluid sealed water circuit cooling structure according to claim 1 is characterized in that: Six mounting holes (21) are formed on the outer side of the housing (18), and two of the mounting holes (21) are evenly arranged in a circle with the main shaft (1) as the axial direction.

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