CN108547805B - Oil tank breather and oil tank - Google Patents
Oil tank breather and oil tank Download PDFInfo
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- CN108547805B CN108547805B CN201810659039.2A CN201810659039A CN108547805B CN 108547805 B CN108547805 B CN 108547805B CN 201810659039 A CN201810659039 A CN 201810659039A CN 108547805 B CN108547805 B CN 108547805B
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- Prior art keywords
- respirator
- unidirectional
- air
- oil
- funnel
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/26—Supply reservoir or sump assemblies
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/044—Removal or measurement of undissolved gas, e.g. de-aeration, venting or bleeding
Abstract
The application provides an oil tank breather and an oil tank, comprising: a respirator shell which is integrally cylindrical; the top end of the upper cover is provided with a respirator upper cover; a unidirectional oil collecting funnel with a conical surface part and a neck part; which is disposed within the respirator housing; wherein, the top end of the conical surface part is matched and installed with the upper cover of the respirator; a breather pipe with two ends communicated with each other, and vertically arranged in the breather shell in the middle; the top end of the oil collecting hopper is connected with a one-way oil collecting hopper; the bottom end of the air inlet pipe penetrates through the bottom of the respirator shell and extends out; the upper cover of the respirator is provided with an exhaust port; the bottom of the respirator shell is provided with an air inlet; the cone part of the unidirectional oil collecting funnel is provided with a plurality of through holes which are sequentially arranged along the circumferential direction of the cone part; the top end of the conical surface part is also provided with an air passage one-way valve for sealing the top opening of the one-way oil collecting funnel; an oil-gas coalescence piece is arranged between the gas path one-way valve and the funnel one-way diaphragm; an air filtering device is also arranged in the respirator shell; and the unidirectional structure is arranged between the air filtering device and the funnel.
Description
Technical Field
The application relates to the oil tank breather technology, in particular to an oil tank breather and an oil tank.
Background
The oil tank is generally provided with a breather for ensuring the communication between the inside and the outside of the oil tank so as to prevent the working from being influenced by larger positive pressure or negative pressure generated in the oil tank, and the breather is used for preventing the oil in the oil tank from being sprayed to the outside to pollute the environment and preventing impurities in the outside air and the like from entering the inside of the oil tank while ensuring the communication between the inside and the outside of the oil tank, wherein the oil tank can be any tank body containing the oil, such as a hydraulic oil tank or a gear box containing lubricating oil. However, since the channels of inhalation and exhalation of the respirator in the prior art are not well separated, the reversed oil gas can pollute the air filtering material to reduce the effect of the filtering material on air filtering, and the reversed oil gas can easily overflow to the external environment through the air inlet of the respirator to pollute the air. Thus, the prior art does not allow for a good filtration of both oil and air.
Therefore, there is a need for a respirator and a fuel tank that avoids the contamination of the air filtering material by the reverse flow of the fuel gas and the reverse flow of the fuel gas by separating the exhalation channel and the inhalation channel of the respirator, and also avoids the contamination of the air by the reverse flow of the fuel gas flowing out into the external environment. And simultaneously, the oil gas is effectively filtered, and the air is effectively filtered.
Disclosure of Invention
The application mainly aims to provide an oil tank respirator and an oil tank, which can prevent the reverse oil gas from polluting an air filtering material and prevent the reverse oil gas from overflowing into an external environment to pollute the air by separating an expiration channel and an inspiration channel of the respirator. And simultaneously, the oil gas is effectively filtered, and the air is effectively filtered.
The application provides an oil tank respirator, which comprises:
a respirator housing 190 having a cylindrical shape and an open top;
a one-way oil collecting hopper 110; disposed within the respirator housing 190; wherein the top edge of the one-way oil collecting funnel 110 is fitted to the upper end of the breather housing 190; a ventilation pipe 180 with two ends penetrating, which is vertically and centrally arranged in the respirator shell; the top end of the oil collecting hopper is connected with the one-way oil collecting hopper 110; the bottom end of which extends through the bottom of the respirator housing 190;
wherein, a respirator upper cover is also arranged at the top end of the respirator shell 190; an exhaust port is arranged on the upper cover of the respirator; the bottom of the respirator housing 190 is provided with an air inlet 191;
wherein, the unidirectional oil collecting hopper 110 is provided with a plurality of through holes 113 sequentially arranged along the circumferential direction thereof;
the top end of the unidirectional oil collecting funnel 110 is further provided with an air path unidirectional structure 120 for sealing the top opening of the unidirectional oil collecting funnel 110;
wherein, an oil-gas coalescing element 130 is further arranged between the air passage unidirectional structure 120 and the funnel unidirectional membrane 116;
wherein, still be provided with in the respirator housing 190: the air filtering device is arranged in a cavity which is defined by the outer wall surface of the vent pipe 180, the outer wall surface of the unidirectional oil collecting funnel 110 and the inner wall surface of the respirator shell 190; the connecting part between the cavity and the unidirectional oil collecting funnel is provided with a unidirectional structure for enabling gas in the cavity to enter the unidirectional oil collecting funnel in a unidirectional way.
By the above arrangement, the exhalation channel of the application is: the breather pipe 180, the one-way oil collecting funnel 110, the oil-gas coalescing element 130, the gas circuit one-way valve 120, and the exhaust port arranged on the upper cover of the respirator are discharged. The air suction channel is as follows: air inlet 191, a cavity surrounded by the outer wall surface of breather pipe 180, the outer wall surface of unidirectional oil collecting funnel 110 and the inner wall surface of breather shell 190, and an air filtering device, a unidirectional structure, through holes 113, unidirectional oil collecting funnel 110, breather pipe 180 and an oil tank arranged in the cavity. From above, when exhaling, the unidirectional structure is closed, thus has prevented the oil gas from entering the air filter unit in the air suction channel pollution; during inspiration, the one-way structure is opened, so that the filtered air enters the one-way oil collecting funnel 110 through the through hole 113 and then enters the oil tank through the breather pipe 180, and therefore, the expiration channel and the inspiration channel of the respirator are separated through the one-way structure, the pollution of the reflux oil gas to the air filtering material is avoided, and the pollution of the reflux oil gas to the air is avoided because the reflux oil gas overflows to the external environment. The device has realized can filter oil gas effectively, can filter the air effectively again.
Preferably, the unidirectional structure is any one of the following:
a funnel unidirectional diaphragm 116 disposed in the unidirectional oil collecting funnel 110 for opening or closing the through hole 113 under the action of air flow pressure; or alternatively
An air passage check valve for controlling the air flow to flow unidirectionally is arranged at the through hole 113 in the unidirectional oil collecting funnel 110; or alternatively
The unidirectional oil collecting funnel 110 is provided with a unidirectional air passage valve between the cavity and the through hole 113 for controlling unidirectional air flow.
From above, during expiration, the funnel unidirectional membrane 116 is tightly attached to the through hole 113 to close the through hole, so that the air filter device in the inspiration channel is prevented from being polluted by oil gas; during inspiration, the funnel one-way diaphragm 116 is pushed open under the action of airflow pressure, so that filtered air enters the one-way oil collecting funnel 110 through the through hole 113 and enters the oil tank through the breather pipe 180.
Similarly, the unidirectional structure 120 of the air path can also play a role in controlling unidirectional flow of air, separate the exhalation channel and the inhalation channel of the respirator, prevent the reverse flow oil gas from polluting the air filtering material, and promote the oil liquid after coalescence and collection to flow back to the oil tank when the inhaled air flows through the oil gas coalescence piece during inhalation. And the reverse flow oil gas is prevented from overflowing to the external environment to pollute the air.
Preferably, the air path unidirectional structure 120 has a valve body 121, a vent 122 communicating with the oil collecting funnel 110 is provided on the valve body 121, and a diaphragm 123 for opening or closing the vent 122 under the action of air flow pressure is provided on the top of the valve body 121 at a side opposite to the oil collecting funnel 110;
wherein, a space for ventilation during exhalation is provided between the air passage unidirectional structure 120 and the upper surface of the top end of the upper cover 192 of the respirator.
By providing the valve body 121 and the diaphragm 123, the valve body 121 is opened during exhalation, the diaphragm 123 is opened under the pressure of the airflow, and the valve body 121 is closed during inhalation, and the diaphragm is closely attached to the vent hole 122. Through the arrangement, unidirectional filtration oil collection of the oil collection funnel is realized.
Preferably, the air filtering device comprises:
a first bracket 151 disposed between the top of the breather pipe 180 in the breather housing 190 and the breather housing and below the one-way oil collection funnel 110;
wherein, the first bracket 151 is in a circular ring shape as a whole, the inner circumferential surface of the first bracket is tightly attached to the outer surface of the breather pipe 180, and the outer circumferential surface of the first bracket is tightly attached to the inner surface of the breather casing 190;
wherein, a first filter material for filtering out solid particles carried by the sucked air is mounted on the first bracket 151.
By the above, the solid particles in the air are filtered out conveniently through the arrangement.
Preferably, the air filtering device further comprises:
a second bracket 171 disposed above the bottom of the respirator housing 190;
wherein the second bracket 171 is integrally formed in a circular ring shape; the inner circumferential surface thereof is disposed in close contact with the outer surface of the breather pipe 180, and the outer circumferential surface thereof is disposed in close contact with the inner surface of the breather housing 190;
wherein, a second vent hole 172 is provided on the second bracket 171; a second filter material for filtering out moisture carried by the sucked air is provided in a space between the second bracket 171 and the bottom of the respirator housing 190.
Therefore, the water vapor carried in the air is filtered out conveniently through the arrangement.
Preferably, also disposed within the respirator housing 190 is: and a third filter medium for drying the sucked air, which is disposed in a cavity defined by the outer wall surface of the breather pipe 180, the inner wall surface of the breather housing 190, the first bracket 151, and the second bracket 171.
By the above, the air is further dried by the arrangement.
Preferably, the bottom of the coalescer 130 is provided with a tip 132 that tapers from top to bottom, from radially outward toward radially inward, and toward the middle.
By doing so, the collected oil droplets can flow down the tip portion 132 and flow back to the oil tank through the vent pipe 180, thereby realizing recovery of the oil droplets.
Preferably, the portion of the breather tube 180 extending from the bottom of the breather housing 190 is provided with a mounting interface 193 for mounting and securing the tank breather to a tank.
By providing the mounting interface 193, the tank breather can be conveniently mounted on the tank.
The application also provides an oil tank respirator, which comprises:
the lower end of the one-way oil collecting funnel is connected with the oil tank;
the top end of the unidirectional oil collecting funnel is provided with a funnel upper cover, the funnel upper cover is provided with an exhaust port, and an exhaust gas path one-way valve for controlling gas to flow outwards from the unidirectional oil collecting funnel is arranged at the exhaust port;
a cavity, the interior of which is provided with an air filtering material; one end of the cavity is provided with an air inlet, and the other end of the cavity is communicated with the unidirectional oil collecting funnel through a through hole arranged on the upper cover of the funnel; the communication part of the cavity and the funnel upper cover is provided with an air inlet air passage one-way valve for controlling air to flow unidirectionally from the cavity into the unidirectional oil collecting funnel;
wherein, the one-way oil collecting funnel is internally provided with an oil-gas coalescing element.
By the above arrangement, the exhalation channel of the application is: the neck part of the unidirectional oil collecting funnel, the conical surface part, the penetrating oil-gas coalescing element, the unidirectional valve of the exhaust gas path, the exhaust port and the exhaust port are discharged. The air suction channel is as follows: the air inlet, the cavity with air filtering material inside, the through hole on the funnel top cover, the one-way oil collecting funnel cone part, the outer cone of the oil-gas coalescing element, the one-way oil collecting funnel neck, and the oil tank. From above, when exhaling, under the pressure of the air current, the air exhaust gas passage check valve is opened, the air inlet gas passage check valve is closed, thus avoiding the oil gas from entering the air suction channel to pollute the air filtering filter material therein; when in inspiration, under the pressure of air flow, the check valve of the air inlet air channel is opened, the check valve of the air outlet air channel is closed, so that the filtered air enters the one-way oil collecting funnel through the through hole, then enters the oil tank through the neck of the one-way oil collecting funnel, and the coalesced oil drops of the oil-gas coalescent element can be brought back to the oil tank when the sucked air flows through the outer conical surface of the oil-gas coalescent element. The device has realized can filter oil gas effectively, can filter the air effectively again.
The application further provides an oil tank, and the oil tank is provided with an oil tank breather, and the oil tank breather adopts the oil tank breather.
In summary, the oil tank respirator of the application avoids the pollution of the reverse oil gas to the air filtering material and the pollution of the air caused by the reverse oil gas overflowing to the external environment, and the sucked gas can promote the oil liquid after coalescence collection to flow back to the oil tank when passing through the outer conical surface of the oil gas coalescence piece during the suction. The device has still realized simultaneously and has been realized can filtering oil gas effectively, can filter the air effectively again (including dry dewatering and filtration solid particulate matter).
Drawings
FIG. 1 is an oblique view of a tank respirator in an exploded condition;
FIG. 2 is a front view of the tank respirator in an exploded condition;
FIG. 3 is a cross-sectional view taken along the direction A-A in FIG. 2;
FIG. 4 is a front view of the upper cover of the tank respirator in a separated state from the respirator shell;
FIG. 5 is a cross-sectional view taken along the direction B-B in FIG. 4;
FIG. 6 is a front view of the tank respirator in an assembled state;
FIG. 7 is a cross-sectional view taken along the direction B-B in FIG. 6;
FIG. 8 is a simplified schematic illustration of the structure of the tank respirator and tank of the present application;
FIG. 9 is a simplified schematic illustration of an alternative to the structure of the tank respirator and tank of the present application;
FIG. 10 is a simplified schematic illustration of an alternative to the structure of the tank respirator and tank of the present application;
fig. 11 is a simplified schematic illustration of an alternative to the structure of the tank respirator and tank of the present application.
Detailed Description
Example 1
The tank respirator and the tank according to the present application will be described in detail with reference to fig. 1 to 7.
Referring to fig. 1 to 7, the tank respirator according to the present embodiment mainly includes a respirator housing 190 having a cylindrical shape and having an opening at the top end, and a respirator upper cover 192 is provided at the top end of the respirator housing 190 to be fitted thereon; the upper cover of the respirator is provided with an exhaust outlet 1921 and the bottom of the respirator is provided with an air inlet 191.
Within the breather housing 190 is disposed a one-way oil collection funnel 110, specifically, the one-way oil collection funnel 110 is preferably a short necked funnel having a tapered portion 111 and a neck portion 112; wherein the tapered portion 111 is disposed toward the respirator upper cover. As shown in fig. 3, a flange 114 provided along the circumferential direction is integrally formed on the top of the tapered surface portion 111, and an integrally annular mounting portion 115 is integrally formed on the flange 114, the mounting portion 115 having a substantially inverted L-shaped longitudinal section, a vertical face portion 115a of the inverted L-shape being provided perpendicularly to the top face edge portion of the flange 114, and a horizontal face portion 115b thereof extending radially outward and being provided parallel to the top face of the flange 114. The horizontal surface portion 115b of the mounting portion 115 is overlapped and fixed to the top end of the respirator housing 190.
As shown in fig. 3, 5 and 7, a ventilation pipe 180 with two ends penetrating is also arranged in the respirator shell 190, and is vertically and centrally arranged in the respirator shell; the top end of the neck 112 of the unidirectional oil collecting funnel 110 is sleeved in the neck 112; the bottom end of which extends through the bottom of the respirator housing 190; a mounting interface 193 is provided on the extension to enable mounting and securing between the respirator 100 and the tank.
A plurality of through holes 113 are formed in the conical surface portion 111 of the unidirectional oil collecting funnel 110, the through holes 113 being arranged in sequence along the circumferential direction, and the through holes 113 being elongated holes arranged along the direction of the generatrix of the conical surface portion 111. Thus, the inner space of the breather housing 190 is substantially partitioned into a passage a defined by the breather pipe 180 and communicating with the oil tank 200 via the one-way oil collecting funnel 110 and the breather pipe 180, an exhalation chamber b defined by the tapered portion 111 of the one-way oil collecting funnel 110 and communicating with the top end opening of the breather pipe 180, and an inhalation chamber c defined by the breather housing 190, the breather upper cover 192, the breather pipe 180, and the one-way oil collecting funnel 110 together, wherein the inhalation chamber c communicates with the exhalation chamber b via the through-hole 113. Thus, the inner space of the breather housing 190 is partitioned into a passage a defined by the breather pipe 180 and used to communicate with the oil tank 200 via the one-way oil collecting funnel 110 and the breather pipe 180, and an intake chamber c defined by the breather housing 190, the breather pipe 180, and the one-way oil collecting funnel 110 together, wherein the intake chamber c communicates with the passage a via the through-hole 113.
As shown in fig. 5 and 7, the top of the breather housing 190 is further provided with a one-way air passage structure 120 (also referred to as an air one-way valve) for sealing the top opening of the one-way oil collecting funnel 110, in this embodiment, as shown in fig. 1 to 3, the one-way air passage structure 120 has a valve body 121, a vent hole 122 communicating with the cavity of the valve body is provided at the top of the valve body 121, and a diaphragm 123 for closing the vent hole 122 is provided at the top of the valve body 121 at a side opposite to the one-way oil collecting funnel 110, and the diaphragm 123 achieves a one-way effect under the action of air pressure.
As shown in fig. 1 to 3, 5 and 7, a funnel one-way film 116 is provided in the tapered surface portion 111 of the one-way oil collecting funnel 110, and the funnel one-way film 116 has a first flange 117 integrally formed on the top portion thereof over the entire circumference, and the first flange 117 is overlapped with the flange 114 of the oil collecting funnel 110. In this embodiment, the funnel unidirectional membrane 116 is an end seal structure made of a rubber material with a smooth surface and having a funnel shape (specifically, a diameter-free funnel shape) as a whole. In the mounted state, the tapered surface portion of the funnel one-way diaphragm 116 is normally disposed in close contact with the inner wall surface of the tapered surface portion 111 of the one-way oil collecting funnel 110. As shown in fig. 1-3, 5 and 7, the air-fuel coalescing element 130 is disposed in the respirator housing 190 between the air-path unidirectional structure 120 and the funnel unidirectional membrane 116, and in this embodiment, the air-fuel coalescing element 130 is preferably made of a wire felt material, and the air-fuel coalescing element 130 may be a component made of a wire felt material and having a regular shape (e.g., matching the shape defined by the funnel unidirectional membrane 116), or may be directly formed by any wire felt material filled in the space defined by the air-path unidirectional structure 120 and the funnel unidirectional membrane 116 (i.e., the shape of the air-fuel coalescing element 130 is not specifically limited and is limited by the final overall shape of the filling material). In particular, as shown in fig. 2 to 3, 5 and 7, a second flange 131 is provided on the top of the oil and gas coalescing element 130 along the entire circumference thereof, and this second flange 131 overlaps the top of the first flange 117 of the aforementioned funnel unidirectional diaphragm 116. A tip 132 is formed at the bottom of the coalescer 130, gradually sloping from the radially outer side toward the radially inner side and converging toward the middle from top to bottom. This arrangement facilitates the dripping of the collected droplets along the tip portion 132 back to the tank.
A first bracket 151 installed at the top of the breather pipe 180 and located below the unidirectional oil collecting hopper 110 is provided in the breather housing 190, and the first bracket 151 is circular in its entirety and n-shaped in its longitudinal section. The inner circumferential surface of the first bracket 151 is disposed in close contact with the outer surface of the breather pipe 180, and the outer circumferential surface thereof is disposed in close contact with the inner surface of the breather housing 190. The first bracket 151 is provided with a first vent hole 152 at a portion constituting an n-shaped planar portion. The first filter medium for filtering out solid particles carried by the sucked air is mounted on the first bracket 151, and in this embodiment, the materials of the first filter medium include but are not limited to: plant fibers, activated carbon, fine denier polyphenylene sulfide fibers, nonwoven fabrics, and the like.
A second bracket 171 is provided in the breather housing 190, which is mounted on the bottom of the breather pipe 180, and is located above the bottom of the breather housing 190, and the second bracket 171 is circular in shape as a whole, and has a U-shaped longitudinal section. The second bracket 171 has an inner circumferential surface disposed in close contact with the outer surface of the breather pipe 180 and an outer circumferential surface disposed in close contact with the inner surface of the breather housing 190. A second vent hole 172 is formed in the second bracket 171 at a portion constituting a U-shaped planar portion. A second filter material is disposed in the respirator housing 190 in a space between the second bracket 171 and the bottom of the respirator housing 190 to filter out water vapor carried by the inhaled air, and the second filter material is composed of a water vapor coalescing filter material, which may be a polytetrafluoroethylene waterproof breathable film or other filter materials capable of filtering water vapor and being breathable. The filtered and coalesced water vapor is discharged through the air inlet under the action of gravity.
A third filter medium for drying intake air, which is formed of dry adsorption particles, is provided in the breather pipe housing 190 and is located in a cavity defined by the outer wall surface of the breather pipe 180, the inner wall surface of the breather pipe housing 190, the first bracket 151, and the second bracket 171. The dry adsorption particles can be silica gel particles or calcium chloride particles, or other dry adsorption particles with a drying function.
The application also provides an oil tank, and the oil tank is provided with the oil tank breather which adopts the oil tank breather.
In order to further and more clearly explain the technical scheme of the application, the working principle of the oil tank respirator of the application is described as follows:
when the oil tank respirator of the application exhales, oil gas is filtered and discharged through the exhaling channel: the breather pipe 180, the one-way oil collecting funnel 110, the oil gas coalescing element 130, the vent hole 122 on the valve body 121 of the gas path one-way valve 120, the exhaust port arranged on the upper cover of the respirator, and the exhaust. From above, the oil gas is filtered and accumulated by the oil gas coalescing element 130, and the filtered oil gas is discharged through the vent 122 of the gas path check valve (the diaphragm 123 is opened under the action of the gas flow pressure during expiration) and further through the exhaust port provided on the upper cover of the respirator. The bottom of the oil-gas coalescing element 130 is provided with a tip 132 which gradually slopes from the radial outside toward the radial inside from top to bottom and converges toward the middle. The above arrangement is advantageous in that the collected oil droplets flow down the tip portion 132 and flow back into the oil tank through the vent pipe 180, so as to recover the oil droplets.
When the oil tank respirator of the application inhales, oil gas is filtered and inhaled through the inhalation channel: the air suction channel is as follows: the air inlet 191, the second filtering material for filtering the water vapor carried by the sucked air, the cavity enclosed by the outer wall surface of the breather pipe 180, the inner wall surface of the breather housing 190, the first bracket 151 and the second bracket 171, and the third filtering material for drying the sucked air, the first filtering material for filtering the solid particles carried by the sucked air, the through hole 113 (the funnel unidirectional membrane 116 is opened under the action of the air flow pressure so that the through hole 113 is opened at the moment), the unidirectional oil collecting funnel 110, the breather pipe 180 and the oil tank. From above, the second filter medium, the third filter medium and the first filter medium are used for filtering air in sequence, and then the filtered air enters the unidirectional oil collecting funnel 110 through the through hole 113, and then the breather pipe 180 enters the oil tank.
As shown in fig. 5 and 7, the above-described exhalation path and inhalation path can also be simply represented as:
an exhalation passage: channel a-exhalation chamber b-exhaust port-exhaust;
an air suction channel: air inlet-air suction chamber c-through hole 113-air exhaling chamber b-channel a-oil tank
In summary, during exhalation, the funnel unidirectional membrane 116 is tightly attached to the through hole 113 to close the through hole, so that the air filtration device is prevented from being polluted by the oil gas entering the inhalation channel; during inspiration, the funnel unidirectional diaphragm 116 is pushed open under the action of airflow pressure, so that filtered air enters the unidirectional oil collecting funnel 110 through the through hole 113 and then enters the oil tank through the breather pipe 180, and the expiration channel and the inspiration channel are separated, so that the pollution of the reflux oil gas to the air filtering material is avoided, and the pollution of the reflux oil gas to the air is avoided because the reflux oil gas overflows to the external environment. The device has realized can filter oil gas effectively, can filter the air effectively again.
Fig. 8 is a simplified schematic diagram of the structure of the aforementioned tank respirator and tank of the present application.
Wherein 1 represents a one-way oil collecting funnel; 2 represents a unidirectional structure; 2.1 represents a one-way structure (e.g., a one-way valve or the funnel one-way diaphragm 116 described previously); 3 represents an oil-gas coalescing filter; 4.1 represents an exhaust port; 5 represents a micron filter material (for filtering out solid particles carried by the sucked air); 6 represents dry adsorbent particles (for drying the intake air); 7 represents a vapor coalescing filter (a filter capable of filtering vapor and permeable, the filtered and coalesced vapor being discharged through the air inlet by gravity); 8 denotes a vent pipe; 9.1 denotes an air inlet. The working principle is as described above.
As shown in fig. 10, an alternative to the tank respirator and tank construction of the present application is shown. This differs from fig. 8 in that the unidirectional structure denoted by 2.1 is arranged at a position between the unidirectional oil collection funnel 1 and the micro filter 5. The rest of the structure is the same as that of fig. 8, and will not be described again here.
As shown in fig. 11, another alternative to the structure of the tank respirator and tank of the present application is shown. Which differs from fig. 10 in that the unidirectional structure denoted 2.1 is arranged at the air inlet. The one-way valve arranged at the air inlet can also play a role in: during expiration, the air flow is prevented from flowing out after continuously passing through 5, 6 and 7, and the effect of preventing the oil gas from polluting the external environment is prevented.
Example two
As shown in fig. 9, another alternative to the tank breather and tank construction of the present application is shown. Comprising the following steps:
a one-way oil collecting funnel 91 having a conical surface portion 91.1 and a neck portion 91.2; the lower end of the neck is connected with an oil tank;
the top end of the conical surface part is provided with a funnel upper cover, the funnel upper cover is provided with an exhaust port 94, and an exhaust gas passage one-way valve 92 for controlling gas to flow outwards from the one-way oil collecting funnel is arranged at the exhaust port 94;
a cavity with air filtering material inside, one end of the cavity is provided with an air inlet 99, and the other end is communicated with the unidirectional oil collecting funnel through a through hole arranged on the upper cover of the funnel; wherein, the communication part of the cavity and the funnel upper cover is provided with an air inlet air passage one-way valve 92.1 for controlling the one-way flow of air from the cavity into the one-way oil collecting funnel;
wherein, the conical surface part of the unidirectional oil collecting funnel is internally provided with an oil-gas coalescing element 93.
To more clearly illustrate this alternative, the tank respirator principle of operation of this alternative will now be described as follows: the exhaling channel of the oil tank respirator is as follows: the neck part of the unidirectional oil collecting funnel, the conical surface part, the oil-gas coalescing element, the air exhaust path unidirectional valve, the air exhaust port and the exhaust. The air suction channel is as follows: the air inlet, the cavity with air filtering material inside, the through hole on the funnel upper cover, the one-way oil collecting funnel cone part, the oil-gas coalescence part, the one-way oil collecting funnel neck part and the oil tank. From above, when exhaling, under the pressure of the air current, the air exhaust gas passage check valve is opened, the air inlet gas passage check valve is closed, thus avoiding the oil gas from entering the air suction channel to pollute the air filtering filter material therein; when in inspiration, under the pressure of air flow, the check valve of the air inlet air channel is opened, the check valve of the air outlet air channel is closed, so that the filtered air enters the one-way oil collecting funnel through the through hole, then enters the oil tank through the neck of the one-way oil collecting funnel, and the coalesced oil drops of the oil-gas coalescent element can be brought back to the oil tank when the sucked air flows through the outer conical surface of the oil-gas coalescent element. The device has realized can filter oil gas effectively, can filter the air effectively again.
The foregoing description of the preferred embodiments of the application is not intended to limit the application to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the application are intended to be included within the scope of the application.
Claims (10)
1. An oil tank respirator, comprising:
a respirator housing (190) having a cylindrical shape and an open top;
a one-way oil collection funnel (110) disposed within the breather housing (190); wherein the top edge of the unidirectional oil collection funnel (110) is assembled at the upper end of the respirator housing (190); a ventilation pipe (180) with two ends communicated, and vertically arranged in the respirator shell in the middle; the top end of the single-direction oil collecting funnel is connected with the single-direction oil collecting funnel (110); the bottom end of the air inlet pipe penetrates through the bottom of the respirator shell (190) and extends out;
wherein, the top end of the respirator shell (190) is also provided with a respirator upper cover; an exhaust port is arranged on the upper cover of the respirator; an air inlet (191) is arranged at the bottom of the respirator shell (190);
wherein, the unidirectional oil collecting funnel (110) is provided with a plurality of through holes (113) which are sequentially arranged along the circumferential direction;
the top end of the unidirectional oil collecting funnel (110) is also provided with an air path unidirectional structure (120) for sealing the top opening of the unidirectional oil collecting funnel (110);
wherein, an oil-gas coalescence piece (130) is arranged between the air passage unidirectional structure (120) and the funnel unidirectional membrane (116);
wherein, still be provided with in the respirator housing (190): the air filtering device is arranged in a cavity which is formed by the outer wall surface of the vent pipe (180), the outer wall surface of the unidirectional oil collecting funnel (110) and the inner wall surface of the respirator shell (190) in a surrounding mode; the connecting part between the cavity and the unidirectional oil collecting funnel is provided with a unidirectional structure for enabling gas in the cavity to enter the unidirectional oil collecting funnel in a unidirectional way.
2. The tank respirator of claim 1, wherein the unidirectional structure is any one of:
a funnel unidirectional membrane (116) which is arranged in the unidirectional oil collecting funnel (110) and used for opening or closing the through hole (113) under the action of airflow pressure; or alternatively
The air passage one-way valve is arranged at the through hole (113) in the one-way oil collecting funnel (110) and used for controlling air flow to flow in one direction; or alternatively
The one-way oil collecting funnel (110) is arranged outside the cavity and between the through holes (113) and is used for controlling the one-way flow of air flow.
3. The oil tank respirator according to claim 1, wherein the air passage unidirectional structure (120) is provided with a valve body (121), a vent hole (122) communicated with the oil collecting funnel (110) is arranged on the valve body (121), and a diaphragm (123) for opening or closing the vent hole (122) under the action of air flow pressure is arranged on the top of the valve body (121) at one side of the valve body opposite to the unidirectional oil collecting funnel (110);
a space for ventilation during exhalation is arranged between the air passage unidirectional structure (120) and the upper surface of the top end of the upper cover (192) of the respirator.
4. The tank respirator of claim 1, wherein the air filtration device comprises:
a first bracket (151) disposed between the top of a breather pipe (180) within the breather housing (190) and the breather housing and below the unidirectional oil collection funnel (110);
wherein the first bracket (151) is in a circular ring shape as a whole, the inner circumferential surface of the first bracket is tightly attached to the outer surface of the vent pipe (180), and the outer circumferential surface of the first bracket is tightly attached to the inner surface of the respirator shell (190);
wherein, a first filter material for filtering out solid particles carried by the sucked air is arranged on the first bracket (151).
5. The tank respirator of claim 4, wherein the air filtration device further comprises:
a second bracket (171) disposed above the bottom of the respirator housing (190);
wherein the second bracket (171) is integrally in a circular ring shape; the inner circumferential surface of the ventilator shell is tightly attached to the outer surface of the ventilator tube (180), and the outer circumferential surface of the ventilator shell is tightly attached to the inner surface of the ventilator shell (190);
wherein, a second vent hole (172) is arranged on the second bracket (171); a second filter material for filtering out water vapor carried by the sucked air is arranged in a space between the second bracket (171) and the bottom of the respirator shell (190).
6. The tank respirator of claim 5, wherein there is further provided within the respirator housing (190): and a third filter medium for drying the inhaled air, which is positioned in a cavity enclosed by the outer wall surface of the breather pipe (180), the inner wall surface of the breather shell (190), the first bracket (151) and the second bracket (171).
7. The tank respirator of claim 1, wherein the bottom of the oil and gas coalescing element (130) is provided with a tip portion (132) that tapers from top to bottom, from radially outward toward radially inward, and toward the middle.
8. The tank respirator of claim 1, wherein the portion of the vent tube (180) that extends from the bottom of the respirator housing (190) is provided with a mounting interface (193) for mounting and securing the tank respirator to a tank.
9. An oil tank respirator, comprising:
a unidirectional oil collecting funnel (91), the lower end of which is connected with the oil tank;
the top end of the unidirectional oil collecting funnel (91) is provided with a funnel upper cover, the funnel upper cover is provided with an exhaust port (94), and the exhaust port is provided with an exhaust gas path unidirectional valve (92) for controlling gas to flow outwards from the unidirectional oil collecting funnel in a unidirectional way;
a cavity, the interior of which is provided with an air filtering material; one end of the cavity is provided with an air inlet (99), and the other end of the cavity is communicated with the unidirectional oil collecting funnel (91) through a through hole arranged on the upper cover of the funnel; wherein, the communication part of the cavity and the funnel upper cover is provided with an air inlet air passage one-way valve (92.1) for controlling the one-way flow of air from the cavity into the one-way oil collecting funnel;
wherein, be provided with oil gas coalescence piece (93) in the one-way oil collecting funnel.
10. A fuel tank, characterized in that a fuel tank breather is provided on the fuel tank, and the fuel tank breather adopts the fuel tank breather as defined in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810659039.2A CN108547805B (en) | 2018-06-22 | 2018-06-22 | Oil tank breather and oil tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810659039.2A CN108547805B (en) | 2018-06-22 | 2018-06-22 | Oil tank breather and oil tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108547805A CN108547805A (en) | 2018-09-18 |
| CN108547805B true CN108547805B (en) | 2023-08-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810659039.2A Active CN108547805B (en) | 2018-06-22 | 2018-06-22 | Oil tank breather and oil tank |
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| Country | Link |
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| CN (1) | CN108547805B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111963665B (en) * | 2020-08-12 | 2021-03-16 | 南京孚奥智能技术有限公司 | Breathing apparatus for removing oil by inhalation, drying and exhalation for wind power gear box |
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| WO2016165804A1 (en) * | 2015-04-15 | 2016-10-20 | Wabco Gmbh | Air dryer cartridge for a compressed air system of a vehicle |
| CN106194862A (en) * | 2016-07-19 | 2016-12-07 | 广西正匠农业科技有限公司 | Payloader hydraulic oil container |
| CN107452473A (en) * | 2017-08-25 | 2017-12-08 | 杭州柯林电气股份有限公司 | A kind of transformer breather |
| CN208518978U (en) * | 2018-06-22 | 2019-02-19 | 高先乐 | Oil tank breather and fuel tank |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140174070A1 (en) * | 2012-12-20 | 2014-06-26 | Caterpillar Inc. | Liquid and air separator |
| EP3617016B1 (en) * | 2014-10-28 | 2021-03-10 | Parker-Hannificn Corporation | Combined oil and water separator in an air brake dryer |
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2018
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016165804A1 (en) * | 2015-04-15 | 2016-10-20 | Wabco Gmbh | Air dryer cartridge for a compressed air system of a vehicle |
| CN106194862A (en) * | 2016-07-19 | 2016-12-07 | 广西正匠农业科技有限公司 | Payloader hydraulic oil container |
| CN107452473A (en) * | 2017-08-25 | 2017-12-08 | 杭州柯林电气股份有限公司 | A kind of transformer breather |
| CN208518978U (en) * | 2018-06-22 | 2019-02-19 | 高先乐 | Oil tank breather and fuel tank |
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| CN108547805A (en) | 2018-09-18 |
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