CN210686918U

CN210686918U - Breather plug for speed reducer

Info

Publication number: CN210686918U
Application number: CN201921418234.2U
Authority: CN
Inventors: 毕玉海; 叶泳宏
Original assignee: Sichuan Bonny Heavy Machinery Co ltd
Current assignee: Sichuan Bonny Heavy Machinery Co ltd
Priority date: 2019-08-28
Filing date: 2019-08-28
Publication date: 2020-06-05
Anticipated expiration: 2029-08-28

Abstract

The utility model discloses a speed reducer is with ventilating stopper, including ventilating stopper body, protection casing: the breather plug body consists of a breather pipe and a breather chamber with a closed top surface, which are sequentially connected from bottom to top, and the bottom of the breather pipe is detachably connected with a speed reducer; the protective cover is detachably covered outside the ventilation chamber, a ventilation gap is formed between the inner side wall of the protective cover and the outer wall of the ventilation chamber, and a plurality of ventilation holes are formed in the upper surface of the ventilation chamber; a filter assembly is fixed inside the ventilation chamber; the bottom in the breather pipe is provided with a plurality of inverted V-shaped oil baffle plates I and II, the two ends of the oil baffle plates I and II are fixed on the inner wall of the breather pipe, and the oil baffle plates are positioned right above a gap between the two oil baffle plates I at the lower layer; the top is equipped with along a plurality of oil return plates of axial direction range in the breather pipe, oil return plate bottom surface is provided with a plurality of refluences awl. The utility model provides a speed reducer is with plug that ventilates, recoverable lubricating oil, it is unobstructed to exhaust.

Description

Breather plug for speed reducer

Technical Field

The utility model relates to a speed reducer technical field especially relates to a breather plug for speed reducer.

Background

The speed reducer plays a role in matching rotating speed and transmitting torque between a prime motor and a working machine or an actuating mechanism, and is widely applied to modern machinery. When the speed reducer works, the temperature inside the speed reducer rises to expand air, a ventilation device is needed to balance the atmospheric pressure inside and outside the speed reducer, and in order to ensure that the air expanded by heating inside the box can be freely discharged to ensure the balance of the internal and external pressure inside and outside the box, a ventilation plug is usually arranged at the top of the box.

Lubricating oil can spatter and cause the influence effect of ventilating in the breather hole when using in the breather plug of current speed reducer, and along with the rising of temperature, can form a large amount of lubricating oil steam in the speed reducer and ooze easily through the breather plug, cause the consumption of lubricating oil extravagant for thereby the inside life-span of speed reducer is shortened because of lacking lubricating oil, and when the speed reducer was out of work in addition, inside dust, steam etc. got into the speed reducer through the breather plug, pollutes lubricating oil, corrosion speed reducer internals.

SUMMERY OF THE UTILITY MODEL

An object of the present invention is to solve at least the above problems and/or disadvantages and to provide at least the advantages which will be described later.

In order to solve the defects of the prior art, the utility model provides a ventilation plug for speed reducer, including ventilation plug body, protection casing:

the breather plug body consists of a breather pipe and a breather chamber with a closed top surface, which are sequentially connected from bottom to top, and the bottom of the breather pipe is detachably connected with the speed reducer box body; the protective cover is detachably covered outside the ventilation chamber, a ventilation gap is formed between the inner side wall of the protective cover and the outer wall of the ventilation chamber, and a plurality of ventilation holes are formed in the upper surface of the ventilation chamber; a filter assembly is fixed inside the ventilation chamber;

the bottom in the breather pipe is provided with a plurality of inverted V-shaped oil baffle plates I and II, two ends of the oil baffle plates I and II are fixed on the inner wall of the breather pipe, and the oil baffle plates are positioned right above a gap between the two oil baffle plates I at the lower layer;

the upper part in the breather pipe is provided with a plurality of oil return plates which are arranged along the axial direction, the oil return plates are staggered to form a bow-shaped flow area, and the surface of the bottom of each oil return plate is provided with a plurality of backflow cones.

Preferably, the protection cover is detachable in a manner that: the ventilation chamber is characterized in that an installation boss protrudes upwards from the top surface of the ventilation chamber, an external thread is arranged on the outer wall of the installation boss, an installation groove matched with the installation boss is formed in the corresponding position of the top of the protection cover, and an internal thread matched with the external thread is arranged on the groove wall of the installation groove.

Preferably, the filtering component comprises a hollow filtering net box and a sponge, and the sponge is filled in the filtering net box; the inner walls of two sides of the ventilation chamber are provided with supporting shoulders, the bottom of the filter screen box is placed on the supporting shoulders, rubber protrusions are further arranged on the inner walls of two sides of the ventilation chamber, and the bottoms of the rubber protrusions are abutted to the top of the filter screen box.

Preferably, the top of the filter screen box is provided with a handle.

Preferably, the oil return plate is placed in a movable groove of a mounting shoulder on the inner side wall of the vent pipe, and a plurality of buffer springs are arranged between the top surface of the oil return plate and the upper groove wall of the movable groove.

Preferably, the vent pipe is sleeved with a sound-absorbing plate, and the sound-absorbing plate is filled with glass fiber cotton.

The utility model discloses at least, include following beneficial effect:

1. the first oil baffle plate and the second oil baffle plate of the utility model are matched together to block the lubricating oil splashed out of the speed reducer, so that the lubricating oil is prevented from entering the vent pipe to influence the smooth effect of ventilation, and the lubricating oil in the speed reducer is prevented from being lost;

2. the oil return plate far away from the high-temperature speed reducer can cool lubricating oil steam in gas, so that the lubricating oil steam is liquefied and condensed at the bottom of the oil return plate after being cooled, the arrangement of a return cone at the bottom of the oil return plate is beneficial to smooth falling of the lubricating oil formed by liquefaction, and a bow-shaped flow area formed by combining a plurality of oil return plates prolongs the flow path of the lubricating oil steam, so that the contact time of the steam and the oil return plate is prolonged, the liquefaction and condensation of the lubricating oil steam are effectively promoted, the overflow of the lubricating oil steam is reduced, the oil consumption loss is reduced, and the serious abrasion caused by lack of the lubricating oil; the inverted V-shaped oil baffle I and the inverted V-shaped oil baffle II are beneficial to enabling lubricating oil dropping from a backflow cone at the bottom of the oil return plate to smoothly fall along the inclined wall, and the oil baffle I and the oil baffle II are prevented from blocking backflow of the lubricating oil;

3. the protection casing prevents that a large amount of dust in the outside air from getting into ventilate indoorly, and the filter assembly in the room of ventilating can further filter the remaining lubricating oil steam in the interception gas, avoids lubricating oil steam directly to cause air pollution with gaseous emission in external atmospheric environment, and when the speed reducer did not work, filter assembly filters and absorbs dust impurity and steam that the external world was brought into in the air, avoids impurity, steam to get into inside the speed reducer.

Drawings

Fig. 1 is a schematic structural view of a breather plug for a speed reducer according to the present invention.

Fig. 2 is an enlarged schematic structural diagram of a in fig. 1 according to the present invention.

Fig. 3 is an enlarged schematic structural diagram of B in the drawing of the present invention.

Fig. 4 is a schematic view of the installation structure of the oil return plate and the vent pipe of the present invention.

Reference numerals: the air vent plug comprises a vent plug body, a protective cover, 21-an installation groove, 3-a vent pipe, 31-an oil baffle plate I, 32-an oil baffle plate II, 4-a vent chamber, 41-a vent hole, 42-an installation boss, 43-a supporting shoulder, 44-a rubber bulge, 5-a circulation gap, 6-a filter assembly, 61-a filter screen box, 62-a sponge, 63-a handle, 7-an oil return plate, 71-a return cone, 8-an installation shoulder, 81-a movable groove, 9-a buffer spring and 10-an acoustic board.

Detailed Description

The present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention with reference to the description.

It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.

Fig. 1-4 show the utility model discloses a breather plug for speed reducer, including breather plug body 1, protection casing 2:

the vent plug body 1 consists of a vent pipe 3 and a vent chamber 4 with a closed top surface which are sequentially connected from bottom to top, and the bottom of the vent pipe 3 is detachably connected with a speed reducer box body; the protective cover 2 is detachably covered outside the ventilation chamber 4, a circulation gap 5 is formed between the inner side wall of the protective cover 2 and the outer wall of the ventilation chamber 4, and a plurality of ventilation holes 41 are formed in the upper surface of the ventilation chamber 4; a filter assembly 6 is fixed inside the breather chamber 4;

the bottom in the breather pipe 3 is provided with a plurality of inverted V-shaped oil baffle plates I31 and II 32, two ends of the oil baffle plates I31 and II 32 are fixed on the inner wall of the breather pipe 3, and the oil baffle plates II 32 are positioned right above a gap between the two oil baffle plates I31 at the lower layer;

a plurality of oil return plates 7 arranged along the axial direction are arranged at the inner upper part of the breather pipe 3, the oil return plates 7 are staggered to form a bow-shaped flow area, and a plurality of backflow cones 71 are arranged on the bottom surface of the oil return plates 7.

In the technical scheme, the breather pipe 3 is communicated with the interior of the speed reducer box body, when the speed reducer works, lubricating oil splashed from the speed reducer is blocked by the cooperation of the oil baffle plate I31 and the oil baffle plate II 32 at the bottom in the breather pipe 3, the lubricating oil is prevented from entering the breather pipe 3 to influence the smooth ventilating effect, the lubricating oil in the speed reducer is prevented from being lost, gas in the speed reducer flows upwards to the position of the oil return plate 7 through the gap between the oil baffle plate I31, the oil baffle plate II 32 and the inner wall of the breather pipe 3, lubricating oil steam in cooling gas of the oil return plate 7 far away from the high-temperature speed reducer is liquefied and condensed at the bottom of the oil return plate 7 after the temperature of the lubricating oil steam is reduced, the arrangement of the return cone 71 is favorable for the lubricating oil formed by liquefaction to smoothly drop, and the bow-shaped flow area formed by combining the plurality of oil return plates 7 prolongs the flow, the lubricating oil vapor is effectively promoted to be liquefied and condensed, the overflow of the lubricating oil vapor is reduced, the oil consumption loss is reduced, and the serious abrasion caused by the lack of the lubricating oil in parts in the speed reducer is avoided; in the backflow process of the lubricating oil formed by liquefaction, the inverted V-shaped oil baffle plate I31 and the inverted V-shaped oil baffle plate II 32 are beneficial to the lubricating oil to smoothly fall along the inclined wall of the lubricating oil, the situation that the oil baffle plate I31 and the oil baffle plate II 32 block the backflow of the lubricating oil is avoided, and the lubricating oil finally flows back to the speed reduction box body; the gas enters the breather chamber 4 after passing through the oil return plate 7, is further filtered and intercepted by the filter assembly 5 again, so that the phenomenon that the lubricating oil vapor is directly discharged with the gas to cause air pollution in the external atmospheric environment is avoided, and finally the gas is discharged into the circulation gap 5 through the vent hole 41 and then is discharged into the external atmospheric environment.

When the speed reducer stops working, the air vent 41 of the ventilation chamber 4 is covered by the protective cover 2, so that a large amount of dust in the outside air can be prevented from entering the ventilation chamber, when the outside air enters the ventilation chamber 4, the filtering component 6 filters and absorbs dust impurities and water vapor in the outside air, and the impurities and the water vapor are prevented from entering the speed reducer.

In another example, the protection cover 2 can be detached in the following manner: an installation boss 42 protrudes upwards from the top surface of the ventilation chamber 4, an external thread is arranged on the outer wall of the installation boss 42, an installation groove 21 matched with the installation boss 42 is formed in the corresponding position of the top of the protection cover 2, and an internal thread matched with the external thread is arranged on the groove wall of the installation groove 21. With this solution, the protection shield 2 is connected to the ventilation chamber 4 reliably and easily. In addition, the protection cover 2 and the ventilation chamber 4 can be detachably connected by bolts.

In another example, the filtering component 6 comprises a hollow filter screen box 61 and a sponge 62, wherein the sponge 62 is filled in the filter screen box 61; the inner walls of two sides of the ventilation chamber 4 are provided with supporting shoulders 43, the bottom of the filter screen box 61 is placed on the supporting shoulders 43, rubber bulges 44 are further arranged on the inner walls of two sides of the ventilation chamber 4, and the bottoms of the rubber bulges 44 are abutted against the top of the filter screen box 61. By adopting the scheme, the supporting shoulder 43 supports and fixes the filtering component 6, the filtering component 6 is pressed and lifted by using external force, the rubber bulge 44 is compressed and deformed, so that the filtering net box 61 can be fixed and detached after passing over the rubber bulge 44, the bottom of the rubber bulge 44 is pressed against and installed in place on the filtering net box 61, the filtering net box 61 is favorably fixed, and the filtering effect of the filtering component 6 is prevented from being influenced by jacking the filtering component 6 by high-pressure gas exhausted from the interior of the speed reducer; in addition, the filter assembly 6 is convenient to disassemble, workers can clean and replace the filter assembly, and the filter effect is guaranteed.

In another example, the filter net cage 61 is provided with a handle 63 at the top. By adopting the scheme, a worker can conveniently hook the handle 63 by using a tool to pull out the filter net box 61.

In another example, the oil return plate 7 is placed in a movable groove 81 of a mounting shoulder 8 on the inner side wall of the vent pipe 4, and a plurality of buffer springs 9 are arranged between the top surface of the oil return plate 7 and the upper groove wall of the movable groove 81. By adopting the scheme, when the high-pressure gas collides the oil return plate 7 upwards from the bottom, the buffer spring 9 reduces the impact force, so that the noise is reduced, and the oil return plate 7 shakes under the action of the buffer spring 9, so that the lubricating oil is rapidly fallen back.

In another example, the sound-absorbing plate 10 is sleeved outside the vent pipe 3, and the sound-absorbing plate 10 is filled with glass fiber cotton. By adopting the scheme, the glass fiber cotton has the advantages of large porosity, large sound absorption rate, good obdurability, corrosion resistance and the like, when noise invades the glass fiber cotton, the energy of the noise is greatly absorbed due to the friction between the noise and fibers and air pockets with different sizes, so that the noise generated by the air in the vent plug is prevented from being spread outwards, and the effects of noise reduction and noise reduction are achieved.

While the embodiments of the invention have been described above, it is not limited to the applications listed in the description and the embodiments, which are fully applicable in all kinds of fields of application of the invention, and further modifications can be easily made by those skilled in the art without departing from the general concept defined by the claims and their equivalents, and it is therefore not limited to the specific details and illustrations shown and described herein, and it is obvious that various changes and modifications can be made by those skilled in the art without departing from the spirit and scope of the invention.

Claims

1. The ventilation plug for the speed reducer is characterized by comprising a ventilation plug body (1) and a protective cover (2):

the vent plug body (1) consists of a vent pipe (3) and a vent chamber (4) with a closed top surface, which are sequentially connected from bottom to top, and the bottom of the vent pipe (3) is detachably connected with a speed reducer box body; the protective cover (2) is detachably covered outside the ventilation chamber (4), a circulation gap (5) is formed between the inner side wall of the protective cover (2) and the outer wall of the ventilation chamber (4), and a plurality of vent holes (41) are formed in the upper surface of the ventilation chamber (4); a filtering component (6) is fixed inside the breather chamber (4);

the bottom in the breather pipe (3) is provided with a plurality of inverted V-shaped oil baffle plates I (31) and II (32), two ends of each of the oil baffle plates I (31) and II (32) are fixed on the inner wall of the breather pipe (3), and the oil baffle plates II (32) are positioned right above a gap between the two oil baffle plates I (31) at the lower layer;

the upper portion is equipped with along a plurality of oil return plates (7) of axial direction range in breather pipe (3), oil return plate (7) staggered arrangement becomes the bow font flow area, oil return plate (7) bottom surface is provided with a plurality of refluences awl (71).

2. The breather plug for a speed reducer according to claim 1, wherein the protection cover (2) is removable in a manner that: the top surface of the ventilation chamber (4) is provided with an installation boss (42) in an upward protruding mode, the outer wall of the installation boss (42) is provided with external threads, an installation groove (21) matched with the installation boss (42) is formed in the corresponding position of the top of the protection cover (2), and the groove wall of the installation groove (21) is provided with internal threads matched with the external threads.

3. The breather plug for a speed reducer according to claim 1, wherein the filter assembly (6) comprises a hollow filter screen box (61) and a sponge (62), the sponge (62) being filled in the filter screen box (61); the inner walls of two sides of the ventilation chamber (4) are provided with supporting shoulders (43), the bottom of the filter screen box (61) is placed on the supporting shoulders (43), rubber bulges (44) are further arranged on the inner walls of two sides of the ventilation chamber (4), and the bottom of each rubber bulge (44) is abutted against the top of the filter screen box (61).

4. The breather plug for a speed reducer according to claim 3, wherein a handle (63) is provided on a top of the filter cage (61).

5. The breather plug for a speed reducer according to claim 1, wherein the oil return plate (7) is placed in a movable groove (81) of a mounting shoulder (8) on the inner side wall of the breather pipe (3), and a plurality of buffer springs (9) are arranged between the top surface of the oil return plate (7) and the upper groove wall of the movable groove (81).

6. The breather plug for a speed reducer according to claim 1, wherein the breather pipe (3) is externally sleeved with a sound-absorbing plate (10), and the sound-absorbing plate (10) is filled with glass fiber cotton.