Novel detachable water-cooling bearing box

Abstract

The utility model discloses a novel detachable water-cooled bearing box, which belongs to the technical field of bearing boxes, aims to solve the problem that the bearing box and bearings are heated unevenly, and comprises a bearing box, a shaft shoulder is arranged in the bearing box, bearings are arranged at the upper end and the lower end of the shaft shoulder in the bearing box, and the bearings are arranged in the bearing box. A bearing gland is arranged on one side of the bearing, the bearing and the bearing gland are axially positioned through a shaft shoulder, the bearing is radially positioned through a bearing box, a bearing box water-cooled jacket is welded to the lower portion of the bearing box, a bearing box baffle is connected to one side of the bearing box water-cooled jacket, and a coil pipe is welded to the bearing box water-cooled jacket. The coil pipe can be arranged in the bearing box according to the length; the bearing box baffle is connected with one end of the movable joint through threads, and the other end of the movable joint is welded to an external water pipe.

Description

Technical Field

[0001] This utility model relates to a bearing housing, specifically a novel detachable water-cooled bearing housing. Background Technology

[0002] Traditional single-stage horizontal centrifugal pumps are widely used in oil refineries and have a fairly reliable operating track record. However, due to the excessively high temperature of the pumped medium, typically reaching 200℃, this can affect the pump body and bearing housing under normal operating conditions, significantly reducing bearing life and consequently, pump life. Therefore, cooling of the pump, bearing housing, and base is necessary. Traditional bearing housing cooling methods typically involve direct water cooling of the bearing housing itself, allowing cooling water to directly contact the bearing housing, aiming to indirectly cool the bearing by lowering the bearing housing temperature. However, this direct cooling method has a drawback: it can lead to uneven heating between the bearing housing and the bearing.

[0003] Specifically, due to the differences in materials, structure, and thermal conductivity between the bearing housing and the bearing, directly water-cooling the bearing housing may cause the bearing housing temperature to drop rapidly, while the temperature inside the bearing drops relatively slowly, thus creating a temperature gradient. This temperature gradient not only leads to uneven heating inside and outside the bearing but may also induce thermal stress inside the bearing, accelerating wear and aging, thereby shortening the bearing's service life.

[0004] To address the aforementioned issues, Chinese Patent CN116025641A discloses a water-cooled oil-lubricated rolling bearing device for a high-thrust vertical motor. This device includes a bearing housing, a thrust bearing housing, and a guide bearing housing. The bearing housing contains a cooling water chamber and a lubricating oil chamber, with the cooling water chamber located outside the lubricating oil chamber. The thrust bearing housing and guide bearing housing are both located inside the lubricating oil chamber, with the guide bearing housing positioned above the thrust bearing housing. The thrust bearing housing, guide bearing housing, and bearing housing are all integral structures. A spherical roller thrust bearing is installed on the inner side of the thrust bearing housing, and a deep groove ball bearing is installed on the inner side of the guide bearing housing. The spherical roller thrust bearing and the deep groove ball bearing are arranged vertically. This arrangement ensures the stability of the entire bearing device, prevents water inlet and outlet pipes from penetrating the oil tank wall for water supply, thus preventing leakage and improving the heat dissipation effect of the water-cooled oil-lubricated rolling bearing device for a high-thrust vertical motor, while also maintaining good sealing performance. However, if the device is changed to a horizontal design, the flow pattern of the cooling water will affect the efficiency of heat dissipation. If a bottom-in, top-out design is adopted, heat will be difficult to dissipate quickly. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model proposes a novel detachable water-cooled bearing housing, comprising a bearing housing with a shoulder inside. Bearings are mounted at both the upper and lower ends of the shoulder inside the bearing housing. A bearing cap is mounted on one side of each bearing. The bearings are axially positioned by the shoulder and the bearing cap, and radially positioned by the bearing housing. A bearing housing water-cooling jacket is welded to the bottom of the bearing housing. A bearing housing baffle is connected to one side of the water-cooling jacket. A coil is welded to the water-cooling jacket, and the length of the coil is sufficient to fit inside the bearing housing. The bearing housing baffle is threaded to one end of a union connector, and the other end is welded to an external water pipe.

[0006] As a further improvement of this utility model, the bearing housing baffle and the bearing housing water cooling jacket are connected by screws.

[0007] As a further improvement of this utility model, a plug is provided at the middle position of the bearing housing baffle.

[0008] As a further improvement of this utility model, the bearing housing baffle and the bearing housing water cooling jacket are sealed by an O-ring.

[0009] As a further improvement of this utility model, an oil cup is provided below the shoulder.

[0010] The beneficial effects of this utility model are:

[0011] Suitable for both vertical and horizontal equipment, it has the following characteristics:

[0012] Instead of the traditional water-cooling method for bearing housings, a water-cooling jacket is added to the outside of the bearing housing to achieve effective cooling.

[0013] Suitable for detachable structures. When the equipment temperature is high and water cooling of the bearing housing is required, a water cooling jacket can be easily installed for cooling; when the temperature is not high, no installation is required, making it more convenient to use.

[0014] Cooling the coils with cooling water reduces the temperature of the lubricating oil in the bearing housing, thus indirectly cooling the bearing and significantly extending its service life.

[0015] Compared to directly water cooling the bearing housing, this water cooling method can more effectively reduce uneven heating between the bearing housing and the bearing, further extending the service life of the bearing. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of an embodiment of the present utility model.

[0017] Attached reference numerals: 1. Bearing housing, 2. Bearing, 3. Bearing cap, 4. Screw, 5. Bearing housing water jacket, 6. Plug, 7. Union, 8. Bearing housing baffle, 9. O-ring, 10. Shoulder, 11. Oil cup, 12. Coil. Detailed Implementation

[0018] To facilitate understanding of this application, a more comprehensive description will be provided below with reference to the accompanying drawings. The drawings illustrate the described embodiments. Rather, these embodiments are provided to enable a more thorough and complete understanding of the disclosure of this application.

[0019] like Figure 1 As shown, a novel detachable water-cooled bearing housing includes a bearing housing 1. A shoulder 10 is provided inside the bearing housing 1. Bearings 2 are mounted at both the upper and lower ends of the shoulder 10 inside the bearing housing 1. A bearing cap 3 is provided on one side of each bearing 2. The bearing 2 is axially positioned by the shoulder 10 and the bearing cap 3, and radially positioned by the bearing housing 1. A bearing housing water-cooling jacket 5 is welded to the bottom of the bearing housing 1. A bearing housing baffle 8 is connected to one side of the bearing housing water-cooling jacket 5. A coil 12 is welded to the bearing housing water-cooling jacket 5, and the length of the coil 12 is sufficient to fit inside the bearing housing 1. The bearing housing baffle 8 is threaded to one end of a union 7, and the other end is welded to an external water pipe. The bearing housing baffle 8 and the bearing housing water-cooling jacket 5 are connected by screws 4. A plug 6 is provided in the middle of the bearing housing baffle 8. The bearing housing baffle 8 and the bearing housing water-cooling jacket 5 are sealed by an O-ring 9. An oil cup 11 is provided on one side of each bearing 2. The above connection method is simple and facilitates disassembly and maintenance.

[0020] During the transport of high-temperature media, bearing 2 experiences excessive heat, necessitating cooling measures. Therefore, external cooling water is introduced. The cooling water first flows through the union joint 7, then through the bearing housing baffle 8, and finally enters the coil 12. The coil 12 circulates inside the bearing housing 1, utilizing the circulation of cooling water to cool the lubricating oil within the bearing housing 1, thereby achieving effective cooling of bearing 2.

[0021] In addition, to ensure the system's sealing, an O-ring 9 is installed between the bearing housing baffle 8 and the bearing housing water jacket 5 to provide a seal. If the coil 12 experiences a leak or other malfunction requiring maintenance, the lubricating oil in the bearing housing can be released through the plug 6, and then the screws 4 can be removed to easily remove the bearing housing baffle 8, allowing for necessary maintenance of the coil 12 or other related components.

[0022] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A novel detachable water-cooled bearing housing, characterized in that, The bearing housing includes a bearing housing (1), which has a shoulder (10) inside. Bearings (2) are provided at both the upper and lower ends of the shoulder (10) inside the bearing housing (1). A bearing cover (3) is provided on one side of the bearing (2). The bearing (2) is axially positioned by the shoulder (10) and the bearing cover (3). The bearing (2) is radially positioned by the bearing housing (1). A bearing housing water cooling jacket (5) is welded to the bottom of the bearing housing (1). A bearing housing baffle (8) is connected to one side of the bearing housing water cooling jacket (5). A coil (12) is welded on the bearing housing water cooling jacket (5). The length of the coil (12) can be placed inside the bearing housing (1). The bearing housing baffle (8) is connected to one end of a union (7) by a thread, and the other end is welded to an external water pipe.

2. The novel detachable water-cooled bearing housing according to claim 1, characterized in that, The bearing housing baffle (8) is connected to the bearing housing water cooling jacket (5) by screws (4).

3. The novel detachable water-cooled bearing housing according to claim 2, characterized in that, A plug (6) is provided in the middle position of the bearing housing baffle (8).

4. The novel detachable water-cooled bearing housing according to claim 3, characterized in that, The bearing housing baffle (8) and the bearing housing water cooling jacket (5) are sealed by an O-ring (9).

5. The novel detachable water-cooled bearing housing according to claim 4, characterized in that, An oil cup (11) is provided below the shoulder (10).

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