Water-cooling bearing seat of multi-stage centrifugal fan

Abstract

The utility model provides a multistage centrifugal fan's water cooling temperature reduction bearing seat, the water cooling temperature reduction bearing seat comprises a seat body, a seat cover, a cooling coil pipe group and an end cover, the seat body is provided with a lubricating oil cavity, the seat cover is arranged on the seat body, and the seat cover and the seat body form a bearing cavity; the bearing cavity is positioned above the lubricating oil cavity and is communicated with the lubricating oil cavity; the cooling coil group is arranged in the lubricating oil cavity and is communicated with the outside of the seat body; the end cover is connected with the seat body and the seat cover; the cooling coil pipe group is additionally arranged in the seat body of the bearing seat, and cooling water circulates in the cooling coil pipe group and is used for carrying out heat exchange on lubricating oil in the lubricating oil cavity so as to reduce the temperature of the lubricating oil, so that friction and abrasion in a bearing are reduced, the service life of the bearing is prolonged, friction heat is discharged, and the temperature rise of the bearing is prevented from being too high.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing seats, in particular to a water-cooling bearing seat for a multi-stage centrifugal fan. Background Art

[0002] The bearing seat is a component used to support the bearing. It is usually used to fix the position of the bearing and transfer the load of the bearing to the main structure of the machine, such as the main shaft. The bearing seat can be integral or split. The split bearing seat is widely used in the fan industry because it is easy to install and maintain and can choose different load capacities and size specifications as needed.

[0003] The bearing seat body is usually provided with a lubricating oil cavity, in which lubricating oil is stored. The role of lubricating oil in the bearing seat is very important. It can not only reduce the internal friction and wear of the bearing and extend the life of the bearing, but also prevent metal corrosion, seal, and discharge friction heat to prevent the bearing temperature from rising too high. When the lubricating oil temperature is too high, it will reduce the viscosity of the lubricating oil, affect its lubricating performance, lead to increased friction and wear of the bearing, and even possible bearing burns or locking. Therefore, it is very necessary to cool the lubricating oil. Utility Model Content

[0004] In view of the above shortcomings of the prior art, the utility model provides a water-cooled bearing seat for a multi-stage centrifugal fan to water-cool the lubricating oil in the lubricating oil chamber of the bearing seat to prevent the lubricating oil temperature from being too high, which may lead to increased bearing friction and aggravated wear.

[0005] In order to achieve the above-mentioned object and other related objects, the utility model provides a water-cooling bearing seat for a multi-stage centrifugal fan.

[0006] The utility model provides a water-cooled cooling bearing seat of a multi-stage centrifugal fan, the water-cooled cooling bearing seat comprising a seat body, a seat cover, a cooling coil group and an end cover, the seat body is provided with a lubricating oil cavity, the seat cover is arranged on the seat body, and forms a bearing cavity with the seat body; the bearing cavity is located above the lubricating oil cavity and is connected with the lubricating oil cavity; the cooling coil group is arranged in the lubricating oil cavity and is connected to the outside of the seat body; the end cover connects the seat body and the seat cover.

[0007] In an example of a water-cooled bearing seat of the utility model, the cooling coil group includes a water inlet end, a cooling coil and a water outlet end, the water inlet end and the water outlet end are respectively arranged on the side of the seat body and connected to the lubricating oil chamber; the cooling coil is arranged in the lubricating oil chamber, and the two ends of the cooling coil are respectively connected to the water inlet end and the water outlet end.

[0008] In an example of the water-cooled bearing seat of the present invention, the water inlet end is located below the water outlet end.

[0009] In an example of the water-cooled bearing seat of the present invention, the cooling coil is made of stainless steel.

[0010] In an example of the water-cooled bearing seat of the utility model, an oil drain terminal is also provided on the seat body, and the oil drain terminal is connected to the lubricating oil chamber and is located at the lowest point of the lubricating oil chamber.

[0011] In an example of the water-cooled bearing seat of the utility model, an oil inlet terminal is also provided on the seat cover, and the oil inlet terminal is located at the top of the seat cover and is connected to the bearing cavity.

[0012] In an example of the water-cooled bearing seat of the utility model, an oil window mirror is also arranged on the seat body, and the oil window mirror is connected to the lubricating oil cavity.

[0013] The utility model proposes a water-cooled temperature reduction bearing seat of a multi-stage centrifugal fan. A cooling coil group is added to the seat body of the bearing seat. Cooling water circulates in the cooling coil group to perform heat exchange on the lubricating oil in the lubricating oil chamber to reduce the temperature of the lubricating oil, thereby reducing friction and wear inside the bearing, extending the service life of the bearing, discharging friction heat, and preventing the bearing from over-temperature rise. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other embodiments can be obtained based on these drawings without paying creative work.

[0015] Figure 1 This is a structural cross-sectional view of an embodiment of a water-cooled bearing seat of the utility model;

[0016] Figure 2 This is a schematic diagram of a cooling coil group in an embodiment of a water-cooled bearing seat of the utility model;

[0017] Figure 3 This is a side view of the seat structure in one embodiment of the water-cooled bearing seat of the utility model;

[0018] Figure 4 It is a top view of the seat cover structure in one embodiment of the water-cooled bearing seat of the utility model.

[0019] Component number description

[0020] 100, seat body; 110, lubricating oil chamber; 120, oil drain terminal; 200, seat cover; 210, oil inlet terminal; 220, temperature measuring hole; 230, pressure measuring hole; 300, cooling coil group; 310, water inlet terminal; 320, cooling coil; 330, water outlet terminal; 400, bearing chamber; 500, end cover; 600, oil window sight glass. DETAILED DESCRIPTION

[0021] The following describes the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and the features in the embodiments can be combined with each other without conflict. It should also be understood that the terms used in the embodiments of the present invention are intended to describe specific implementation schemes, rather than to limit the scope of protection of the present invention. The test methods for which specific conditions are not specified in the following examples are usually carried out under conventional conditions or under the conditions recommended by the manufacturers.

[0022] When numerical ranges are given in the embodiments, it should be understood that unless otherwise specified in the present invention, both endpoints of each numerical range and any value between the two endpoints can be selected. Unless otherwise defined, all technical and scientific terms used in the present invention are in accordance with the prior art mastery of those skilled in the art and the description of the present invention, and any prior art methods, equipment and materials similar or equivalent to the methods, equipment and materials in the embodiments of the present invention can also be used to implement the present invention.

[0023] It should be noted that the terms such as "upper", "lower", "left", "right", "middle" and "one" cited in this specification are only for the convenience of description and are not used to limit the scope of implementation of the present utility model. Changes or adjustments to their relative relationships should be regarded as the scope of implementation of the present utility model without substantially changing the technical content.

[0024] To solve the technical problem of cooling the lubricating oil in the lubricating oil chamber, please refer to Figures 1 to 4 The utility model provides a water-cooled bearing seat for a multi-stage centrifugal fan. A cooling coil group is arranged in the lubricating oil cavity to exchange heat with the lubricating oil in the lubricating oil cavity, thereby reducing the temperature of the lubricating oil in the lubricating oil cavity and extending the service life of the bearing.

[0025] See also Figure 1The utility model provides a water-cooled cooling bearing seat of a multi-stage centrifugal fan, the water-cooled cooling bearing seat comprises a seat body 100, a seat cover 200, a cooling coil group 300 and an end cover 500, wherein the seat body 100 and the seat cover 200 adopt a split structure design, the seat body 100 and the seat cover 200 are locked and connected by bolts, the seat body 100 and the seat cover 200 are castings, in this embodiment, the casting material of the seat body 100 and the seat cover 200 is cast iron, it should be noted that, in other embodiments, the casting material may also be aluminum alloy or steel; A lubricating oil chamber 110 is opened in the seat body 100, and lubricating oil is stored in the lubricating oil chamber 110. The lubricating oil is used to lubricate the bearing installed in the bearing seat to reduce the internal friction and wear of the bearing. The structure of the lubricating oil chamber 110 is not limited, and its structural design is well known in the industry. The seat cover 200 is arranged on the seat body 100 and forms a bearing chamber 400 with the seat body 100. The bearing chamber 400 is used to install the bearing and the main shaft installed on the bearing; the bearing chamber 400 is located above the lubricating oil chamber 110 and is connected to the lubricating oil chamber 110.

[0026] The cooling coil group 300 is arranged in the lubricating oil chamber 110 and is connected to the outside of the seat body 100; cooling water is injected into the water inlet end of the cooling coil group 300 by an external cooling water pump, and the cooling coil group 300 exchanges heat with the lubricating oil in the lubricating oil chamber 110, and then flows out from the water outlet end, thereby reducing the temperature of the lubricating oil. The end cover 500 is located on the outside of one end of the bearing chamber 400 and connects the seat body 100 and the seat cover 200. The end cover 500 provides axial positioning for the outer ring of the bearing to ensure the correct axial position of the bearing.

[0027] See also Figure 2In an example of a water-cooled bearing seat of the present invention, the cooling coil group 300 includes a water inlet end 310, a cooling coil 320 and a water outlet end 330. The water inlet end 310 is installed on the side of the seat body 100. One end of the water inlet end 310 is connected to the outside of the seat body 100. The water inlet end 310 serves as a water inlet, and the water inlet pipeline of the external cooling water pump is connected to the end located on the inner side of the seat body 100. The cooling coil 320 is installed in the lubricating oil chamber 110 in the seat body 100. The structure and installation position of the cooling coil 320 are not limited. It can be arranged around the bearing or located on one side of the lubricating oil chamber 110 to meet the requirements of the cooling coil 320. On the premise of ensuring sufficient heat exchange of the lubricating oil in the lubricating oil chamber 110 and avoiding affecting the operation of other components in the bearing seat, in the present embodiment, the cooling coil 320 adopts a coiled structure and is located on one side of the lubricating oil chamber 110, which can not only ensure the heat exchange of the lubricating oil between the cooling coil 320 and the lubricating oil in the lubricating oil chamber 110, but also reduce the space occupancy and avoid the installation and layout of the cooling coil 320 affecting the normal operation of the bearing or the main shaft, the water outlet end of the cooling coil 320; connected to the water outlet end 330, the water outlet end 330 is installed on the side of the seat body 100 and connected to the outside of the seat body 100, and the other end of the water outlet end 330 is connected to the water outlet pipe to discharge the cooling water.

[0028] See also Figure 3 In an example of a water-cooled bearing seat of the present invention, the water inlet end 310 is located below the water outlet end 330, which can effectively control the flow direction of the cooling water, improve the cooling efficiency, reduce the energy required for pumping the cooling water, and make the cooling water have sufficient contact with the pipe wall in the cooling coil 320. At the same time, it prevents the cooling water from flowing back after heat exchange, ensuring the cooling effect, thereby performing effective heat exchange.

[0029] In an example of a water-cooled bearing seat of the utility model, the cooling coil 320 is made of stainless steel material, such as a stainless steel tube. The stainless steel tube not only has good thermal conductivity, but also has high hardness. The stainless steel tube is installed in the lubricating oil chamber 110. When the lubricating oil flows in the lubricating oil chamber 110, it has good impact resistance, thereby preventing the connection between the cooling coil 320 and the water inlet end 310 or the water outlet end 330 from being deformed or broken, causing cooling water to enter the lubricating oil chamber 110. However, in other embodiments, the cooling coil 320 can also be made of materials with good thermal conductivity such as copper tubes.

[0030] See also Figure 1 In an example of a water-cooled bearing seat of the present invention, an oil drain terminal 120 is also provided on the seat body 100. The oil drain terminal 120 is connected to the lubricating oil chamber 110 and is used to release the lubricating oil in the lubricating oil chamber 110. The oil drain terminal 120 is preferably installed at the lowest point of the lubricating oil chamber 110 to ensure that the lubricating oil can be completely released.

[0031] See also Figure 1 and Figure 4 In an example of a water-cooled bearing seat of the utility model, an oil inlet terminal 210 is also provided on the seat cover 200. The oil inlet terminal 210 is located at the top of the seat cover 200 and is connected to the bearing cavity 400. The lubricating oil is replenished into the lubricating oil cavity 110 from the bearing cavity 400. In this embodiment, a temperature measuring hole 220 and a pressure measuring hole 230 are also opened on the seat cover 200. The temperature measuring hole 220 and the pressure measuring hole 230 are used to install a temperature sensor and a pressure sensor for detecting temperature and pressure changes in the bearing seat.

[0032] See also Figure 3 In an example of a water-cooled bearing seat of the present invention, an oil window mirror 600 is also provided on the seat body 100. The oil window mirror 600 is connected to the lubricating oil chamber 110. The oil window mirror 600 displays the liquid level of the lubricating oil in the lubricating oil chamber 110. When the liquid level is lower than a predetermined liquid level height, it is used as a reminder to add lubricating oil to the lubricating oil chamber 110.

[0033] The water-cooled cooling bearing seat of the multi-stage centrifugal fan of the utility model is provided with a cooling coil group in the seat body of the bearing seat, and cooling water circulates in the cooling coil group, which is used to heat exchange the lubricating oil in the lubricating oil chamber to reduce the temperature of the lubricating oil, thereby reducing the friction and wear inside the bearing, extending the service life of the bearing, discharging friction heat, and preventing the bearing from overheating. Therefore, the utility model effectively overcomes some practical problems in the prior art and has a high utilization value and use significance. The above embodiments are only illustrative of the principles and effects of the utility model, and are not used to limit the utility model. Anyone familiar with this technology can modify or change the above embodiments without violating the spirit and scope of the utility model. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the relevant technical field without departing from the spirit and technical ideas disclosed by the utility model should still be covered by the claims of the utility model.

Claims

1. A water-cooled bearing seat for a multi-stage centrifugal fan, characterized in that: include: The seat body (100) is provided with a lubricating oil chamber (110). A seat cover (200) is disposed on the seat body (100) and forms a bearing cavity (400) with the seat body (100); The bearing cavity (400) is located above the lubricating oil cavity (110) and is in communication with the lubricating oil cavity (110); A cooling coil group (300) is arranged in the lubricating oil chamber (110) and is connected to the outside of the seat body (100); An end cover (500) connects the seat body (100) and the seat cover (200).

2. The water-cooled bearing seat according to claim 1, characterized in that: The cooling coil group (300) comprises a water inlet end (310), a cooling coil (320) and a water outlet end (330); the water inlet end (310) and the water outlet end (330) are respectively arranged on the side of the seat body (100) and are connected to the lubricating oil chamber (110); the cooling coil (320) is arranged in the lubricating oil chamber (110), and two ends of the cooling coil (320) are respectively connected to the water inlet end (310) and the water outlet end (330).

3. The water-cooled bearing seat according to claim 2, characterized in that: The water inlet end (310) is located below the water outlet end (330).

4. The water-cooled bearing seat according to claim 3, characterized in that: The cooling coil (320) is made of stainless steel.

5. The water-cooled bearing seat according to claim 2, characterized in that: An oil drain terminal (120) is also provided on the seat body (100); the oil drain terminal (120) is connected to the lubricating oil chamber (110) and is located at the lowest point of the lubricating oil chamber (110).

6. The water-cooled bearing seat according to claim 5, characterized in that: An oil inlet end (210) is also provided on the seat cover (200); the oil inlet end (210) is located at the top of the seat cover (200) and is connected to the bearing cavity (400).

7. The water-cooled bearing seat according to claim 2, characterized in that: An oil window mirror (600) is also provided on the seat body (100), and the oil window mirror (600) is connected to the lubricating oil chamber (110).

Images