CN210152958U - Novel fan bearing box - Google Patents

Abstract

The utility model relates to a novel fan bearing box, which comprises a bearing box body and a side cover; the bearing box body is provided with an oil pool cavity and a bearing cavity; the two bearing cavities are arranged on two sides of the oil pool cavity; the bearing cavity is provided with a first annular protrusion, and the annular protrusion is made of an oil absorption material; a closed cooling water cavity is arranged in the side cover, and is provided with a plurality of baffles with through holes to divide the cooling water cavity into a plurality of areas which are only communicated through the through holes; the side cover is further provided with a second annular protrusion, and the second annular protrusion can extend into the bearing cavity and abut against the first annular protrusion. The arrangement of the through hole baffle in the cooling water cavity of the side cover of the device accelerates the cooling efficiency and is beneficial to more sufficient heat exchange. And the setting is simple, and the working time and the working cost are saved. Meanwhile, the second annular protrusion, the first annular protrusion abutted against the second annular protrusion and the oil return groove in the side cover are arranged, so that the leakage of lubricating oil is reduced.

Description

Novel fan bearing box

Technical Field

The utility model relates to a fan bearing box field especially relates to a novel fan bearing box that can effectively reduce the temperature and reduce the lubricating oil seepage.

Background

The centrifugal ventilator is an industrial device for conveying gas media, and can be divided into a common blower and a high-temperature blower according to different temperatures of gas conveyed by the centrifugal ventilator. The fan bearing box is a key part in the centrifugal ventilator, and a main shaft bearing can generate a large amount of heat in the working process of the fan. Particularly, the high-temperature fan has high temperature during working, is easy to generate adverse effects on equipment, particularly a bearing, and reduces the service life of the high-temperature fan. Meanwhile, when the equipment runs, lubricating oil can leak outwards from a gap between the side cover and the box body or along the main shaft of the fan, and the leakage of the lubricating oil is aggravated due to high temperature. It is therefore an effective temperature reduction and fan bearing housing that reduces the lubricant leakage that provides a problem to be solved by the utility model.

Disclosure of Invention

The utility model overcomes prior art's is not enough, provides a fan bearing box that can effectively reduce the temperature and reduce the lubricating oil seepage.

In order to achieve the above purpose, the utility model adopts the technical scheme that: the utility model provides a novel fan bearing box, its characterized in that: comprises a bearing box body and a side cover; the bearing box body is provided with an oil pool cavity and a bearing cavity; the two bearing cavities are arranged on two sides of the oil pool cavity; the bearing cavity is provided with a first annular protrusion, and the annular protrusion is made of an oil absorption material; a closed cooling water cavity is arranged in the side cover, and is provided with a plurality of baffles with through holes to divide the cooling water cavity into a plurality of areas which are only communicated through the through holes; the side cover is further provided with a second annular protrusion, and the second annular protrusion can extend into the bearing cavity and abut against the first annular protrusion.

As a preferred scheme, the wall of the fan bearing box for preventing oil leakage of the side cover is provided with an annular oil return groove; the oil return groove is communicated with one end of the oil return hole; the other end of the oil return hole is communicated with the outside.

Preferably, the oil-absorbing material is oil-absorbing swelling rubber.

As a preferred scheme, the cooling water cavity is provided with a water inlet and a water outlet; the water inlet is positioned at the upper part of the cooling water cavity, and the water outlet is positioned at the lower part of the cooling water cavity.

As a preferred scheme, the bearing box body is of an integrated structure integrating the upper part and the lower part.

More preferably, the upper half part of the interior of the bearing housing body is in a semi-cylindrical shape, and the lower half part is in a rectangular parallelepiped shape.

As a preferred scheme, a base is arranged at the bottom of the bearing box body.

As a preferred scheme, the top of the bearing box body is provided with an oil filling port, and the side surface of the lower part of the bearing box body is provided with an oil draining port and an oil level observation window.

Preferably, the side cover is further provided with an annular sealing strip.

The beneficial technical effects of the utility model mainly lie in: the fan bearing box can effectively reduce the temperature and reduce the leakage of lubricating oil.

(1) The arrangement of the through hole baffle in the cooling water cavity of the side cover of the device ensures that the cooling water passing through the through hole has the attraction effect on the peripheral cooling water, increases the convection and mixing in the cooling water, and increases the collision and contact among cooling water molecules, thereby accelerating the efficiency of transferring heat from a local area with high temperature to other parts of the cooling water and accelerating the cooling efficiency; meanwhile, the movement direction and the track of molecules of the cooling water passing through the through holes are changed, the occurrence probability of turbulence and rotational flow is increased, and the positive influence is exerted on promoting the mixing of the inside of the cooling water and further accelerating the heat transfer. In addition, the arrangement also increases the retention time of the cooling water in the cooling water cavity, and is beneficial to more sufficient heat exchange. Meanwhile, the baffle with the through hole is simple in arrangement, and working time and working cost are saved.

(2) The second annular protrusion and the first annular protrusion are abutted to the second annular protrusion, so that the path of leakage of lubricating oil from the gap between the side cover and the bearing box body is increased, the difficulty of leakage of the lubricating oil from the gap between the side cover and the bearing box body is increased, and the possibility of leakage is reduced; meanwhile, the first annular protrusion is made of oil absorption expansion rubber, so that lubricating oil close to a gap between the side cover and the bearing box body can be absorbed, and the oil absorption expansion rubber expands after absorbing oil, so that the sealing performance between the second annular protrusion and the first annular protrusion is improved.

(3) The oil return groove arranged in the side cover of the device can block and collect lubricating oil which leaks outwards along the main shaft of the fan, and the lubricating oil returns to the bearing cavity from the oil return hole, so that the leakage of the lubricating oil is reduced.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic structural diagram of a preferred embodiment of the present invention.

Figure 2 is a schematic side view (partially cut away) of the bearing housing body of the preferred embodiment of the invention.

Fig. 3 is a schematic inner side view of a side cover according to a preferred embodiment of the present invention.

Fig. 4 is a schematic outer side view of a side cover according to a preferred embodiment of the present invention.

Detailed Description

The invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic drawings and illustrate, by way of illustration only, the basic structure of the invention, and which therefore show only the constituents relevant to the invention. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

As shown in fig. 1-4, a novel fan bearing box comprises a bearing box body 1 and two side covers 2, wherein the end surface of the bearing box body 1 and the side covers 2 are both provided with central through holes for a main shaft of a fan to pass through; when assembled, the side cover 2 and the bearing housing body 1 are fastened by bolts or other conventional means.

An oil pool cavity 11 and a bearing cavity 12 are arranged in the bearing box body 1; two bearing cavities 12 are arranged and respectively arranged at two sides of the oil pool cavity 11, and the oil pool cavity 11 is communicated with the bearing cavities 12; the inner peripheral surface of the bearing cavity 12 is provided with a first annular protrusion 13, and the annular protrusion 13 is made of oil-absorbing expansion rubber (or oil-absorbing materials such as activated carbon, hydrophobic silica gel, polylactic acid and the like can also be adopted). Bearing box body 1 is upper and lower integrative monolithic structure, compares in current fan bearing box and adopts the structure of upper and lower lid, has reduced the quality problem that produces and the oil leak phenomenon of upper and lower lid seam face department because fixing bolt vibrations are not hard up in the use. The upper half part of the interior of the oil pool cavity 11 is in a semi-cylindrical shape, and the lower half part is in a cuboid shape, so that the storage capacity of lubricating oil in the box body can be increased, and the stability is also improved. The bottom of the bearing box body 1 is provided with a base 14. The top of the bearing box body 1 is provided with a lubricating oil filling port 15, and the lower side surface is provided with a lubricating oil drain port 16 and an oil level observation window 17.

In the side cover 2, a closed cooling water cavity 21 is arranged at a position close to the bearing box body 1 during assembly, and the cooling water cavity 21 is close to the bearing cavity 12; the cooling water cavity 21 is provided with a water inlet 211 and a water outlet 212; the water inlet 211 is positioned at the upper part of the cooling water cavity 21, and the water outlet 212 is positioned at the lower part of the cooling water cavity 21; meanwhile, the cooling water chamber 21 is provided with 4 baffles 213 having a plurality of through holes 213a, so as to divide the cooling water chamber 21 into 4 regions communicating only through the through holes 213 a. In operation, when the machine is running and the temperature rises, the cooling water enters the cooling water cavity 21 through the water inlet 211 and moves from top to bottom; the baffle 213 and the through hole 213a are arranged such that the cooling water can move only from one area to another area through the through hole 213 a; the cooling water is pressed by the through-hole 213a while passing through the through-hole, and the flow speed thereof is increased after flowing out of the through-hole 213 a. According to Bernoulli's principle, the pressure of the cooling water is smaller when the flow rate of the cooling water is larger; a local pressure imbalance in which the pressure of the cooling water passing through the through hole 213a is low and the pressure of the cooling water around the cooling water is high is caused; the part of cooling water passing through the through hole 213a has a suction effect on the surrounding cooling water, so that the convection and mixing inside the cooling water are increased, and the collision and contact among cooling water molecules are increased, thereby accelerating the efficiency of transferring heat from a high-temperature local area to other parts of the cooling water and accelerating the cooling efficiency; meanwhile, the movement direction and the track of the molecules of the cooling water passing through the through hole 213a are changed, so that the occurrence probability of turbulence and rotational flow is increased, and the positive influence is exerted on promoting the mixing of the inside of the cooling water and further accelerating the heat transfer. In addition, the arrangement also increases the retention time of the cooling water in the cooling water cavity 21, which is beneficial to more sufficient heat exchange; the cooling water after heat exchange is discharged from the water outlet 212.

Meanwhile, the inner side surface (the side close to the bearing housing body 1 when assembled) of the side cover 2 is provided with a second annular protrusion 22; the arrangement that the second annular protrusion 22 extends into the bearing cavity 12 to abut against the first annular protrusion 13 during assembly can increase the path for the leakage of the lubricating oil from the gap between the side cover 2 and the bearing box body 1, thereby increasing the difficulty of the leakage of the lubricating oil from the gap between the side cover 2 and the bearing box body 1 and reducing the possibility of leakage; meanwhile, the first annular projection 13 is made of oil-absorbing expanded rubber, which not only absorbs the lubricating oil near the gap between the side cover 2 and the bearing housing body 1, but also expands after absorbing the oil, thereby increasing the sealing property between the second annular projection 22 and the first annular projection 13.

An annular oil return groove 23 is formed in the wall of a central through hole of the side cover 2; the oil return groove 23 is communicated with one end of an oil return hole 24; the other end of the oil return hole 24 penetrates through the cold water cavity 21 and is communicated with the outside (is communicated with the bearing cavity 12 during assembly); the oil return grooves 23 can block and collect the lubricating oil leaking outwards along the main shaft of the fan and return the lubricating oil from the oil return holes 24 to the bearing cavity 12, thereby reducing the leakage of the lubricating oil. In addition, the side cover 2 is also provided with an annular sealing strip 25, so that the sealing performance of the side cover 2 and the bearing box body 1 is improved.

In light of the foregoing, it is to be understood that various changes and modifications may be made by those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims (9)

1. The utility model provides a novel fan bearing box which characterized in that: comprises a bearing box body and a side cover; the bearing box body is provided with an oil pool cavity and a bearing cavity; the two bearing cavities are arranged on two sides of the oil pool cavity; the bearing cavity is provided with a first annular protrusion, and the annular protrusion is made of an oil absorption material; a closed cooling water cavity is arranged in the side cover, and is provided with a plurality of baffles with through holes to divide the cooling water cavity into a plurality of areas which are only communicated through the through holes; the side cover is further provided with a second annular protrusion, and the second annular protrusion can extend into the bearing cavity and abut against the first annular protrusion.

2. A novel fan bearing housing as claimed in claim 1, wherein: an annular oil return groove is formed in the wall of the oil leakage preventing fan bearing box of the side cover; the oil return groove is communicated with one end of the oil return hole; the other end of the oil return hole is communicated with the outside.

3. A novel fan bearing housing as claimed in claim 1, wherein: the oil absorption material is oil absorption expansion rubber.

4. A novel fan bearing housing as claimed in claim 1, wherein: the cooling water cavity is provided with a water inlet and a water outlet; the water inlet is positioned at the upper part of the cooling water cavity, and the water outlet is positioned at the lower part of the cooling water cavity.

5. A novel fan bearing housing as claimed in claim 1, wherein: the bearing box body is of an integrated structure integrating the upper part and the lower part.

6. A novel fan bearing housing as claimed in claim 5, wherein: the upper half part of the interior of the bearing box body is in a semi-cylindrical shape, and the lower half part of the interior of the bearing box body is in a cuboid shape.

7. A novel fan bearing housing as claimed in claim 1, wherein: the bottom of the bearing box body is provided with a base.

8. A novel fan bearing housing as claimed in claim 1, wherein: the bearing box body is provided with an oil filling port at the top and an oil discharge port and an oil level observation window at the side surface of the lower part.

9. A novel fan bearing housing as claimed in claim 1, wherein: the side cover is also provided with an annular sealing strip.

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