CN212361559U - One-way breather valve of lubricating oil tank - Google Patents

Abstract

The utility model discloses a one-way breather valve of lubricating-oil tank, including the valve main part, the spheroid case with be used for blockking lubricating oil and filtering impurity's fender oil filtering mechanism, the center of valve main part link up and is equipped with the perforating hole, the one end of perforating hole is the air vent, the middle section is the case hole of walking, the other end is equipped with ventilative gland, the case hole of walking is located to the spheroid case, be connected with of air vent and case hole of walking and supply the sealed step face of spheroid case laminating, the valve main part is used for being connected with the lubricating-oil tank in the one end of air vent, it locates the other end of valve main part to keep off. The one-way breather valve for the lubricating oil tank can prevent external impurities and a large amount of oxygen from entering the lubricating oil tank, prolong the service life of equipment, improve the safety of the equipment and reduce the maintenance cost of the equipment.

Description

One-way breather valve of lubricating oil tank

Technical Field

The utility model relates to a rigidity valve element technical field with direction especially relates to a one-way breather valve of lubricating-oil tank.

Background

At present, lubricating-oil tanks such as common reducing gear boxes or bearing boxes on the market are often provided with simple ventilating breather valves, the ventilating mode of the breather valve is bidirectional, and no filtering device is arranged, the internal and external air of the lubricating-oil tank is exchanged at any time along with the internal temperature and disturbance of the tank, so that impurities such as dust, moisture and the like in the external environment enter the lubricating-oil tank at any time along with the air, and a large amount of lubricating oil is directly sprayed out from the breathing holes along with the air when the air is not exhausted smoothly.

Also having had filter equipment such as sponge, wool felt or air filter on the market partially large-scale reducing gear box breather valve to add, nevertheless still can't avoid the inside gas of lubricating-oil tank and the frequent exchange of outside air, partial dust adsorbs in filter equipment, if the untimely clearance or renew cartridge cause the breather valve to block up easily, ventilative not smooth lubricating-oil tank is super-warm, and lubricated effect is not good. In addition, although the breather valve filters large external particle impurities to a certain extent, part of particles (PM2.5), moisture and oxygen cannot be filtered or isolated. Air particles such as external dust, moisture and oxygen enter the lubricating oil tank, so that the problems of lubricating oil pollution, emulsification, oxidation and the like are easily caused, deteriorated or polluted lubricating oil cannot reach the lubricating requirements of parts such as bearings, gears, bearing bushes and the like and is damaged due to untimely oil filtration or oil replacement, huge economic loss is caused, and the safe operation of equipment is influenced.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome prior art not enough, provide one kind and can avoid external impurity and a large amount of oxygen to get into lubricating-oil tank, improve equipment life and security and reduce the one-way breather valve of lubricating-oil tank of equipment maintenance cost.

In order to solve the technical problem, the utility model discloses a following technical scheme:

the utility model provides a lubricating-oil tank one-way breather valve, includes valve main part, spheroid case and is used for blockking lubricating oil and the oily filtering mechanism that keeps off of filtering impurity, the center of valve main part link up and is equipped with the perforating hole, the one end of perforating hole is that air vent, middle section are equipped with ventilative gland for case hole, the other end, the case hole of walking is located to the spheroid case, be connected with of air vent and case hole of walking and supply the sealed step face of spheroid case laminating, the valve main part is used for being connected with the lubricating-oil tank in the one end of air vent, keep off oily filtering mechanism and locate the other end of valve main part.

As a further improvement of the above technical solution:

keep off oily filtering mechanism and include the shell and cross the filter body, cross the filter body and locate the port department of perforating hole and be located the shell, the shell is fixed in the valve main part and is compressed tightly on the filter body, be equipped with the breather on the shell.

The filtering body is a metal filter screen formed by overlapping a plurality of layers of steel wire mesh plates.

The sealing step surface is a curved surface with the same radius as the sphere valve core.

The outlet of the breathing hole is obliquely arranged towards the valve main body.

And a sealing ring is arranged between the filter body and the valve main body.

The shell is fixed on the valve main body in a threaded connection mode.

The gas permeable gland comprises a central body, an outer ring body and a middle gas permeable body, wherein the central body is arranged in the center of the outer ring body, the middle gas permeable body is fixed between the central body and the outer ring body, the outer ring body is in threaded connection with the valve main body, and a screwing part is arranged on the central body.

The middle air-permeable body is formed by folding a steel sheet, and an air-permeable gap is formed in the middle air-permeable body.

The diameter of the ball valve core is less than or equal to half of the valve core through hole and more than or equal to 0.8 time of the vent hole.

Compared with the prior art, the utility model has the advantages of:

the utility model discloses a one-way breather valve of lubricating-oil tank, including the valve main part, spheroid case and the oily filtering mechanism that keeps off that is used for blockking lubricating oil and filtration impurity, the center of valve main part link up and is equipped with the perforating hole, the one end of perforating hole is the air vent, the middle section is the case hole of walking, the other end is equipped with ventilative gland, the case is located to the spheroid case and walks downtheholely, be connected with between air vent and the case hole of walking and supply the sealed step face of spheroid case laminating, the valve main part is used for being connected with the lubricating-oil tank in the one end of air vent, keep off oily filtering. Because keep off oily filtering mechanism's existence, thereby can avoid lubricating-oil tank and the external world to carry out frequent gas exchange and bring impurity (particulate matter), moisture and a large amount of oxygen into, furthest prevents that the lubricating oil from polluting or rotten to ensure the lubricated effect of equipment. The ball valve core is attached and sealed with the sealing step surface under the action of gravity, so that the breather valve has a one-way conduction effect, impurities and a large amount of oxygen are prevented from being brought in by back suction of a large amount of outside air, the service life and the safety of equipment are greatly prolonged, and the equipment maintenance cost of frequently filtering or changing oil is greatly reduced.

Drawings

Fig. 1 is a schematic structural diagram of the one-way breather valve of the lubricating oil tank of the present invention.

Fig. 2 is a sectional view taken along line a-a of fig. 1.

Fig. 3 is a top view of the ventilation gland of the one-way breather valve of the lubricating oil tank of the present invention.

The reference numerals in the figures denote:

1. a valve body; 2. a spherical valve core; 3. an oil-blocking filtering mechanism; 31. a housing; 311. a breathing hole; 32. a filter body; 4. a through hole; 41. a vent hole; 42. a valve core through hole; 43. sealing the step surface; 44. an oil return angle guide surface; 5. a gas-permeable gland; 51. a central body; 511. a screwing part; 52. an outer ring body; 53. the middle part is permeable to gas; 531. a ventilation gap; 6. and (4) a sealing ring.

Detailed Description

The invention will be described in further detail with reference to the drawings and specific examples.

Fig. 1 to fig. 3 show the utility model discloses an embodiment of one-way breather valve of lubricating-oil tank, this one-way breather valve of lubricating-oil tank includes valve main part 1, spheroid case 2 and the fender oil filtering mechanism 3 that is used for blockking lubricating oil and filtration impurity, the center of valve main part 1 link up and is equipped with perforating hole 4, the one end of perforating hole 4 is air vent 41, the middle section is case through hole 42, the other end is equipped with ventilative gland 5, spheroid case 2 is located in case through hole 42, air vent 41 and case through hole 42 are connected with and supply the sealed step face 43 of spheroid case 2 laminating, valve main part 1 is used for being connected with the lubricating-oil tank in the one end of air vent 41, it locates the other end of valve main part 1 to keep off oil filtering mechanism 3.

When the valve is used, one end of the valve main body 1 at the vent hole 41 is connected with a lubricating oil tank (the vent hole 41 of the valve main body 1 is arranged vertically downwards), the valve main body 1 and the lubricating oil tank can be in threaded connection or can be externally connected, when heat is generated in the lubricating oil tank in the operation process of equipment, the internal air is heated or disturbed, the air pressure in the lubricating oil tank is gradually increased until the spherical valve core 2 is jacked up through the vent hole 41, so that the spherical valve core 2 is separated from the sealing step surface 43, then, hot air in the lubricating oil tank is discharged to the outside through the valve core through hole 42, the air-permeable gland 5 and the oil blocking filter mechanism 3 in sequence, and the process can release positive pressure in the lubricating oil tank and take away part of heat; after the exhaust is finished, the ball valve core 2 falls onto the sealing step surface 43 under the action of gravity and is attached and sealed with the sealing step surface 43, so that a large amount of external air is prevented from being sucked backwards to bring impurities and a large amount of oxygen. The lubricating oil brought out when the air in the lubricating oil tank is discharged is blocked by the oil blocking filter mechanism 3, is condensed below the oil blocking filter mechanism 3 and then flows back into the valve core passing hole 42, and when the valve core passing hole 42 is jacked up again to release pressure, the lubricating oil in the valve core passing hole 42 flows back into the lubricating oil tank through the vent hole 41. Because keep off the existence of oil filtering mechanism 3, thereby can avoid lubricating-oil tank and the external world to carry out frequent gas exchange and bring impurity (particulate matter), moisture and a large amount of oxygen into, furthest prevents that the lubricating oil from polluting or rotten to ensure the lubricated effect of equipment. The ball valve core 2 is attached and sealed with the sealing step surface 43 under the action of gravity, so that the breather valve has a one-way conduction effect, impurities and a large amount of oxygen brought by back suction of a large amount of outside air are prevented, the service life and safety of equipment are greatly prolonged, and the equipment maintenance cost of frequently filtering or replacing oil is greatly reduced.

In this embodiment, as shown in fig. 3, the oil-blocking filter mechanism 3 includes a housing 31 and a filter 32, the filter 32 is disposed at the end of the through hole 4 and is located in the housing 31, the housing 31 is fixed on the valve main body 1 and is pressed against the filter 32, and the housing 31 is provided with a breathing hole 311. Specifically, the bottom of the housing 31 has an opening, and the opening end of the housing 31 is fixed on the valve body 1 in a threaded connection manner, so that the oil-blocking filter mechanism 3 and the air-permeable gland 5 can be conveniently disassembled and assembled. The periphery of shell 31 is six structures, and has evenly arranged respiratory hole 311 on six. The housing 31 is preferably made of stainless steel, copper or galvanized material.

In this embodiment, the filtering body 32 is a metal filtering net formed by overlapping multiple layers of steel wire mesh plates. The mesh number and the layer number of the steel wire mesh plates can be selected according to the density of suspended particles in a field working environment, and the twenty-layer steel wire mesh plates are conventionally selected and superposed to serve as metal filter screens.

In this embodiment, the seal stepped surface 43 is a curved surface having the same radius as the spherical valve element 2. When the ball valve element 2 is bonded to the seal step surface 43, a mechanical seal is formed, and the sealing performance is better as the difference between the internal pressures increases. The self-sealing mode is adopted to block external impurities, moisture, a large amount of oxygen and the like so as to prevent oil pollution or deterioration.

In this embodiment, the outlet of the breathing hole 311 is inclined toward the valve body 1, so as to prevent the external impurities and water from naturally entering the breathing valve to block the breathing valve or enter the breathing valve. The specific angle of the downward inclination of the outlet of the breathing hole 311 is determined according to the practical processing convenience, and the theoretical inclination angle is not less than 30 degrees.

In this embodiment, a seal ring 6 is provided between the filter body 32 and the valve main body 1. The sealing ring 6 is an oil-resistant rubber ring, and the sealing ring 6 is a common standard component, so that the sealing property between the filter body 32 and the valve main body 1 can be improved, and the loss of lubricating oil outflow is avoided.

In this embodiment, the gas-permeable cover 5 includes a center body 51, an outer ring body 52 and an intermediate gas-permeable body 53, the center body 51 is disposed at the center of the outer ring body 52, the intermediate gas-permeable body 53 is fixed between the center body 51 and the outer ring body 52, the outer ring body 52 is screwed with the valve main body 1, and the center body 51 is provided with a screw portion 511. The threaded connection part of the valve main body 1 and the outer ring body 52 is a threaded hole, the diameter of the threaded hole is larger than that of the valve core penetrating hole 42, an oil return angle guiding surface 44 is connected between the threaded hole and the valve core penetrating hole 42, and the oil return angle guiding surface 44 can ensure that oil gas brought out during exhaust is condensed and then flows into an oil tank automatically. The intermediate gas-permeable body 53 is formed by folding a steel sheet, and a gas-permeable gap 531 is formed in the intermediate gas-permeable body 53. The ventilation gland 5 mainly meets the maximum ventilation capacity and can prevent the spherical valve core 2 from jumping out of the valve core through hole 42, and the ventilation gland 5 is simple in process. The screwing portion 511 of the central body 51 can be designed as a triangular groove matched with an inner triangular wrench, and the air-permeable gland 5 can be disassembled and assembled by using the inner triangular wrench.

In the present embodiment, the diameter of the ball valve element 2 is less than or equal to half of the valve element passage hole 42 and greater than or equal to 0.8 times of the vent hole 41.

High-pressure gas in the lubricating oil tank jacks up the ball valve core 2 through the vent hole 41, then sequentially passes through the valve core through hole 42, the breathable gland 5 and the filter body 32, and finally is discharged from the breathing hole 311 of the shell 31; because the lubricating oil in the lubricating oil tank is disturbed continuously in the running process of the equipment in the bearing and the reduction box body, or the volume of the gas in the lubricating oil tank is changed due to the temperature change when the equipment is started or stopped, the ball valve core 2 can release positive pressure along with the action of the internal pressure of the lubricating oil tank; oil gas in the lubricating oil tank is brought out along with gas and passes through the vent hole 41, and passes through the valve core through hole 42, the air-permeable gland 5 and the filter body 32, a large amount of lubricating oil particles are blocked by the spherical valve core 2 and directly flow back to the oil tank through the vent hole 41, a small amount of lubricating oil particles are blocked by the air-permeable gland 5 and flow back into the valve core through hole 42, a small amount of lubricating oil particles are blocked by the filter body 32 and flow back through the sealing ring 6 and are collected into the valve core through hole 42 by the oil return guide angle surface 44, and when the spherical valve core 2 is jacked up again by positive pressure in the lubricating oil tank, the. When the external air enters the breather valve through the breathing hole 311 of the shell 31, impurities in the air are blocked by the filter 32, and the external air is isolated when the internal pressure of the lubricating oil tank is reduced until the ball valve core 2 falls back to the sealing step surface 43 to form a mechanical seal. The bore diameter and thread form of the valve body 1 can be configured according to the lubricant tank port. In order to ensure the cleanliness of grease, the valve body 1 is suggested to be made of stainless steel or hot-dip galvanized material.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention. The technical solution of the present invention can be used by anyone skilled in the art to make many possible variations and modifications, or to modify equivalent embodiments, without departing from the scope of the technical solution of the present invention, using the technical content disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments by the technical entity of the present invention should fall within the protection scope of the technical solution of the present invention.

Claims (10)

1. A lubricating oil tank one-way breather valve which is characterized in that: including valve main part (1), spheroid case (2) and be used for blockking lubricating oil and filtering impurity's fender oil filtering mechanism (3), the center of valve main part (1) link up and is equipped with perforating hole (4), the one end of perforating hole (4) is air vent (41), middle section for case through hole (42), the other end is equipped with ventilative gland (5), spheroid case (2) are located in case through hole (42), air vent (41) and case through hole (42) are connected with and supply sealed step face (43) of spheroid case (2) laminating, valve main part (1) are used for being connected with the lubricating-oil tank in the one end of air vent (41), keep off oil filtering mechanism (3) and locate the other end of valve main part (1).

2. The one-way breather valve for a lubricating oil tank of claim 1, wherein: keep off oil filtering mechanism (3) and include shell (31) and filter body (32), the port department that through-hole (4) were located in shell (31) is located in filter body (32), shell (31) are fixed on valve main part (1) and are compressed tightly on filter body (32), be equipped with breathing hole (311) on shell (31).

3. The one-way breather valve for a lubricating oil tank of claim 2, wherein: the filtering body (32) is a metal filter screen formed by overlapping a plurality of layers of steel wire mesh plates.

4. The one-way breather valve for a lubricating oil tank of claim 2, wherein: the sealing step surface (43) is a curved surface with the same radius as the spherical valve core (2).

5. The one-way breather valve for a lubricating oil tank of claim 2, wherein: the outlet of the breathing hole (311) is obliquely arranged towards the valve main body (1).

6. The one-way breather valve for a lubricating oil tank of claim 2, wherein: and a sealing ring (6) is arranged between the filter body (32) and the valve main body (1).

7. The one-way breather valve for a lubricating oil tank of claim 2, wherein: the shell (31) is fixed on the valve main body (1) in a threaded connection mode.

8. The one-way breather valve for a lubricating oil tank of any of claims 1 to 7, wherein: the air-permeable gland (5) comprises a central body (51), an outer ring body (52) and a middle air-permeable body (53), wherein the central body (51) is arranged at the center of the outer ring body (52), the middle air-permeable body (53) is fixed between the central body (51) and the outer ring body (52), the outer ring body (52) is in threaded connection with the valve main body (1), and a screwing part (511) is arranged on the central body (51).

9. The one-way breather valve for a lubricating oil tank of claim 8, wherein: the middle air-permeable body (53) is formed by folding a steel sheet, and an air-permeable gap (531) is formed in the middle air-permeable body (53).

10. The one-way breather valve for a lubricating oil tank of any of claims 1 to 7, wherein: the diameter of the ball valve core (2) is less than or equal to half of the valve core through hole (42) and greater than or equal to 0.8 times of the vent hole (41).

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