Integrated cooling type magnetic oil seal

Abstract

The utility model discloses an integrated cooling type magnetic oil seal, and relates to the technical field of rotary sealing, a shaft body is rotatably connected to a bearing box, and the shaft body is connected with a movable ring; the bearing box is connected with a static ring, and the integrated block is connected with the static ring and rotationally connected with the outer ring face of the movable ring. An annular water cooling cavity is formed in the static ring, and a first magnetic block is fixed to the side, facing the movable ring, of the static ring. The static ring is provided with at least three bolt holes in the horizontal direction. The side, close to the shaft, of the movable ring makes contact with the static ring, a gap is reserved between the movable ring and the side, opposite to the first magnetic block, of the movable ring, a plurality of bolt holes are formed in a fixing bolt in a penetrating and threaded connection mode, and the fixing bolt penetrates and is connected with the integrated block in a sliding mode. The movable ring and the static ring are tightly attached through attraction of the magnetic blocks, and shaking and collision are avoided; heat generated in the rotating process is reduced by arranging the water cooling cavity; the manifold block is arranged to wrap the joint of the movable ring and the static ring, so that pollution caused by external dust is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of rotational sealing, in particular to an integrated cooling type magnetic oil seal. Background Technique

[0002] The magnetic oil seal utilizes magnetic technology to achieve sealing through the combination of a static ring and a dynamic ring. The static ring is usually made of wear-resistant material, fixed in the cavity, and contains magnetic elements, while the dynamic ring can maintain close contact under the attraction of the static ring, thereby achieving effective sealing.

[0003] However, the existing magnetic oil seals still have the following disadvantages: 1. The static and dynamic rings will collide with each other during transportation, resulting in damage or deformation, leading to sealing failure; 2. Heat generated during rotation causes demagnetization of the magnetic blocks; 3. External dust will contaminate the unsealed rough joint of the static and dynamic rings of the oil seal, resulting in increased wear. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an integrated cooling type magnetic oil seal to solve the problems put forward in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] An integrated cooling type magnetic oil seal includes a bearing box and a shaft body. The shaft body is rotatably connected to the bearing box, and the shaft body is connected with a dynamic ring; the bearing box is connected with a static ring, the static ring is connected with an integrated block, and the integrated block masks the dynamic ring through a rib protruding towards the shaft body side. The side of the integrated block close to the shaft body is rotatably connected with the outer ring surface of the dynamic ring; a ring-shaped water cooling cavity is opened inside the static ring, and water cooling holes are respectively opened at the top and bottom of the ring surface of the static ring. The water cooling holes are communicated with the water cooling cavity; a first magnetic block is fixed on the side of the static ring facing the dynamic ring; at least three bolt holes are opened in the static ring along the horizontal direction; the near-shaft side of the dynamic ring contacts the static ring, and a gap is left on the side of the dynamic ring opposite to the first magnetic block; the bolt holes are threadedly connected with fixing bolts passing through the bolt holes. There are multiple fixing bolts, and the fixing bolts penetrate and are slidably connected with the integrated block. One end of the fixing bolt is a bolt connection end threadedly connected with the bearing box, and the other end is a bolt head abutting against the integrated block. As a further preference of the utility model, a transportation nut is threadedly connected to the bolt connection end, and the side of the transportation nut abuts against the static ring.

[0007] Thus, through the setting of the transportation nut, the dynamic ring, the static ring and the integrated block are stably connected, avoiding damage caused by mutual collision.

[0008] As a further preference of the present utility model, a reverse pushing spiral groove is provided on the near-axis side of the stationary ring, and its thread direction is opposite to the rotation direction of the shaft body, for guiding the oil fluid to flow back and avoiding oil fluid spillage.

[0009] As a further preference of the present utility model, a communication hole is provided at the bottom of the integrated block, and the communication hole is in communication with the gap between the moving ring and the stationary ring. A plurality of fan blades around the shaft body are fixed on the side of the moving ring facing the stationary ring, improving the heat dissipation effect.

[0010] As a further preference of the present utility model, a moving ring driving O-ring is abutted against the side of the moving ring close to the shaft body, for driving the moving ring to rotate by the shaft body.

[0011] As a further preference of the present utility model, a stationary ring sealing gasket is abutted against the side of the stationary ring close to the bearing housing, improving the sealing effect between the stationary ring and the bearing housing.

[0012] As a further preference of the present utility model, a second magnetic block is fixed on the outer side of the moving ring; a third magnetic block is fixed on the side of the edge of the integrated block facing the second magnetic block, and the second magnetic block and the third magnetic block repel each other. Through the arrangement of the second magnetic block and the third magnetic block, the moving ring is positioned in cooperation with the first magnetic block, avoiding its deviation.

[0013] As a further preference of the present utility model, a packing is provided at the sliding connection between the outer edge of the moving ring and the integrated block, and the packing is detachably connected to the integrated block, restricting the deviation and collision of the moving ring during transportation while reducing the friction between the moving ring and the integrated block.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows: 1. By providing fixing bolts and an integrated block, the moving ring and the stationary ring are combined, and the moving ring and the stationary ring are tightly attached by the attraction of magnetic blocks, avoiding their shaking and knocking;

[0015] 2. By providing a water-cooled cavity, the heat generated during rotation is reduced;

[0016] 3. By providing an integrated block to cover the joint of the moving and stationary rings, pollution caused by external dust is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art.

[0018] Figure 1 It is a structural schematic diagram of the integrated cooling type magnetic oil seal in this embodiment.

[0019] Figure 2 For Figure 1 The enlarged view of part A of.

[0020] Figure 3 This is a perspective view of the stationary ring in the integrated cooling type magnetic oil seal of this embodiment.

[0021] Figure 4 This is a perspective view of the rotating ring in the integrated cooling type magnetic oil seal of this embodiment.

[0022] Figure 5 This is a perspective view of the integrated block in the integrated cooling type magnetic oil seal of this embodiment.

[0023] Figure 6 This is a schematic diagram of the transportation of the integrated cooling type magnetic oil seal of this embodiment.

[0024] In the figure: 1, rotating ring; 2, stationary ring; 3, first magnetic block; 4, rotating ring drive O-ring; 5, stationary ring gasket; 6, water cooling cavity; 7, fan blade; 8, reverse push-away spiral groove; 9, integrated block; 10, bearing housing; 11, shaft body; 12, fixing bolt; 101, second magnetic block; 601, water cooling hole; 901, packing; 902, third magnetic block; 903, communication hole; 1201, bolt hole; 1202, transportation nut; 1203, bolt connection end. Detailed implementation manners

[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer, the present 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 only used to explain the present utility model and are not used to limit the present utility model.

[0026] Refer to Figures 1 - 5 As shown, an integrated cooling type magnetic oil seal includes a bearing housing 10 and a shaft body 11. The shaft body 11 is rotatably connected to the bearing housing 10, and the shaft body 11 is connected with a rotating ring 1. The bearing housing 10 is connected with a stationary ring 2. The integrated block 9 is connected with the stationary ring 2 and shields the rotating ring 1 through a rim protruding toward the shaft body 11 side. A second magnetic block 101 is fixed on the outer side of the rotating ring 1. A third magnetic block 902 is fixed on the rim of the integrated block 9 toward the second magnetic block 101 side. The second magnetic block 101 and the third magnetic block 902 repel each other. Through the arrangement of the second magnetic block 101 and the third magnetic block 902, together with the first magnetic block 3, the rotating ring 1 is positioned to prevent the rotating ring 1 from axially shifting. And a packing 901 is arranged at the sliding connection between the outer edge of the rotating ring 1 and the integrated block 9, so that the rotating ring 1 is rotatably connected with the integrated block 9. The packing 901 is detachably connected to the integrated block 9. The packing 901 adopts flexible graphite packing 901, which restricts the offset and collision of the rotating ring 1 during transportation and reduces the friction between the rotating ring 1 and the integrated block 9.

[0027] An annular water cooling cavity 6 is provided inside the stationary ring 2. Water cooling holes 601 are respectively provided at the top and bottom of the circumferential surface of the stationary ring 2. The water cooling liquid enters from the bottom and exits from the top. The water cooling holes 601 communicate with the water cooling cavity 6. A first magnetic block 3 is fixed on the side of the stationary ring 2 facing the moving ring 1. At least three bolt holes 1201 are provided in the stationary ring 2 in the horizontal direction. A reverse pushing spiral groove 8 is provided on the near-axis side of the stationary ring 2, and its thread direction is opposite to the rotation direction of the shaft body 11, which is used to guide the oil liquid to flow back and avoid oil spillage.

[0028] The near-axis side of the moving ring 1 contacts the stationary ring 2, and its contact surface uses a flexible lubricating pad such as a flexible graphite pad or a polytetrafluoroethylene sealing gasket, which can reduce friction and improve the sealing performance at the same time. A gap is left on the side of the moving ring 1 opposite to the first magnetic block 3, and this gap avoids demagnetization of the first magnetic block 3 caused by heat generated by friction. A moving ring driving O-ring 4 is abutted on the side of the moving ring 1 close to the shaft body 11, which is used to drive the moving ring 1 to rotate by the shaft body 11. A communication hole 903 is provided at the bottom of the integrated block 9, and the communication hole 903 communicates with the gap between the moving ring 1 and the stationary ring 2. A plurality of fan blades 7 around the shaft body 11 are fixed on the side of the moving ring 1 facing the stationary ring 2.

[0029] During the working process of the present utility model, when the shaft body 11 rotates, the fan blades 7 rotate accordingly, so that the hot air generated by friction flows, avoiding heat accumulation.

[0030] As Figure 6 shown, a plurality of fixing bolts 12 penetrate and are threadedly connected to the bolt holes 1201. The fixing bolts 12 penetrate and are slidably connected to the integrated block 9. One end of the fixing bolt 12 is a bolt connection end 1203, which is threadedly connected to the bearing box 10, and the other end is a bolt head that abuts against the integrated block 9.

[0031] During the transportation process of the present utility model, a transportation nut 1202 is threadedly connected to the bolt connection end 1203. The side surface of the transportation nut 1202 abuts against the stationary ring 2. Through the setting of the transportation nut 1202, the moving ring 1, the stationary ring 2 and the integrated block 9 are stably connected, avoiding damage caused by mutual collision.

[0032] As Figure 1 and Figure 6 shown, a stationary ring sealing pad 5 is abutted on the side of the stationary ring 2 close to the bearing box 10. The stationary ring sealing pad 5 uses a rubber sealing pad, and through cooperation with the fixing bolts 12 for extrusion, the sealing effect between the stationary ring 2 and the bearing box 10 is improved.

[0033] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An integrated cooling magnetic oil seal, comprising a bearing housing and a shaft body, the shaft body is rotatably connected to the bearing housing, and a dynamic ring is connected to the shaft body; a static ring is connected to the bearing housing, and it is characterized in that: The stationary ring is connected with an integrated block, and the integrated block shields the moving ring through an edge protruding towards the shaft body side. The integrated block is rotatably connected to the outer ring surface of the moving ring near the shaft body side; A ring-shaped water cooling cavity is formed inside the stationary ring. Water cooling holes are respectively formed at the top and bottom of the ring surface of the stationary ring, and the water cooling holes are communicated with the water cooling cavity; a first magnetic block is fixed on the side of the stationary ring facing the moving ring; at least three bolt holes are formed in the stationary ring in the horizontal direction; The near-axis side of the moving ring contacts the stationary ring, and a gap is left on the side of the moving ring opposite to the first magnetic block; The bolt holes are threadedly connected with fixing bolts penetrating through the bolt holes. There are multiple fixing bolts. The fixing bolts penetrate through and are slidably connected with the integrated block. One end of the fixing bolt is a bolt connection end threadedly connected with the bearing box, and the other end is a bolt head abuting against the integrated block.

2. The integrated cooling type magnetic oil seal according to claim 1, wherein: A transport nut is threadedly connected to the bolt connection end, and the side surface of the transport nut abuts against the stationary ring.

3. The integrated cooling magnetic oil seal according to claim 1, characterized in that: A reverse pushing spiral groove is formed on the near-axis side of the stationary ring, and its thread direction is opposite to the rotation direction of the shaft body, for guiding the oil liquid to flow back.

4. The integrated cooling type magnetic oil seal according to claim 1, wherein: A communication hole is formed at the bottom of the integrated block, and the communication hole is communicated with the gap between the moving ring and the stationary ring. A plurality of fan blades around the shaft body are fixed on the side of the moving ring facing the stationary ring.

5. The integrated cooling type magnetic oil seal according to claim 1, characterized in that: A moving ring driving O-ring abuts against the near-axis side of the moving ring.

6. The integrated cooling magnetic oil seal according to claim 1, characterized in that: A stationary ring gasket abuts against the side of the stationary ring near the bearing box.

7. The integrated cooling type magnetic oil seal according to claim 1, wherein: A second magnetic block is fixed on the outer side of the moving ring; a third magnetic block is fixed on the side of the edge of the integrated block facing the second magnetic block, and the second magnetic block and the third magnetic block repel each other.

8. The integrated cooling type magnetic oil seal according to claim 1, characterized in that: A packing is arranged at the sliding connection part between the outer edge of the moving ring and the integrated block, and the packing is detachably connected to the integrated block.

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