CN210890998U - Breather and oil tank using same - Google Patents
Breather and oil tank using same Download PDFInfo
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- CN210890998U CN210890998U CN201921112025.5U CN201921112025U CN210890998U CN 210890998 U CN210890998 U CN 210890998U CN 201921112025 U CN201921112025 U CN 201921112025U CN 210890998 U CN210890998 U CN 210890998U
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Abstract
The utility model relates to a breather and an oil tank using the breather, the breather comprises a shell and a communicating channel, wherein the communicating channel is provided with an inner port communicated with the oil tank main body and an outer port deviating from the oil tank main body; the breather valve structure comprises a valve body arranged in a shell, a valve body channel is arranged in the valve body, the breather valve structure also comprises a valve core, and the valve core closes the valve body channel when the pressure difference inside and outside the oil tank is less than a set value and conducts the valve body channel when the pressure difference is more than the set value; the filtering device comprises an oil mist filter element and a water-gas filter element, wherein the oil mist filter element is used for filtering oil mist in gas to form oil drops; the breather valve structure, the oil mist filter element and the water vapor filter element are all arranged in the communicating channel and are sequentially distributed from the inner opening to the outer opening; still be provided with oil return passage in the respirator, oil return passage one end extends to oil mist filter core department, and the other end extends to interior mouth to in the oil droplet guide backward flow that forms the oil mist filter core filters to the oil tank main part.
Description
Technical Field
The utility model relates to a respirator and use oil tank of this respirator.
Background
Large-scale pump class equipment all is furnished with the lubricating oil station generally, disposes the breather valve on the oil tank of lubricating oil station generally and is used for guaranteeing that the oil tank is inside to communicate with the outside to produce great positive pressure or negative pressure in the oil tank and influence work.
The patent of chinese utility model with the publication number of grant CN205235605U discloses a respirator, this respirator comprises casing and the respiratory tube that is located the casing, and the respiratory tube lower extreme links to each other with the oil tank main part, and the upper portion of respiratory tube is equipped with the branch fuel tap, forms the cavity between respiratory tube and the casing, has arranged in proper order along the trend of oil gas in the cavity and has deoiled the filtering layer, absorb water the filtering layer, remove water filtering layer and dust removal filtering layer. When the air purifier is used, when the oil tank exhales outwards, air passes through the breathing tube and then sequentially passes through the layers to remove oil and water; when the oil tank inhales air, the air reversely flows through the dedusting filter layer, the dewatering filter layer, the water absorption filter layer and the oil removal filter layer. The respirator can prevent oil particles in gas from being directly discharged outwards to pollute the environment, and can also prevent external gas from entering an oil tank without treatment to cause the oil quality in the oil tank to be poor.
However, the respirator in the prior art still has some disadvantages in use, and the filtered oil and water cannot be separated and recovered separately, especially the oil drops cannot be recovered, so that waste is caused. Moreover, the deoiling filtering layer remains in the deoiling filtering layer after intercepting the oil mist condensation in the gas and separating out oil drops, can't flow back to the oil tank, in case oil content is too high in the deoiling filtering layer, then can influence gaseous normal passing through, lead to the unable normal breathing of respirator in order to balance the pressure in the oil tank, lead to the unable normal oil return of oil tank and go out oil, lead to unable assurance with lubricating function such as supporting pump class equipment of oil tank, equipment easily breaks down.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a respirator, which solves the technical problem of waste caused by the fact that oil drops can not be recovered in the prior art; still provide an oil tank that uses this respirator to solve the oil tank among the prior art and can't retrieve the technical problem of oil droplet.
In order to achieve the above purpose, the technical scheme of the utility model is that: a respirator, comprising
The shell is fixedly arranged on the oil tank main body when in use and is provided with a communicating channel for communicating the inside and the outside of the oil tank main body, and the communicating channel is provided with an inner opening for communicating the oil tank main body and an outer opening deviating from the oil tank main body;
the breather valve structure comprises a valve body arranged in a shell, a valve body channel communicated with and communicated with an inner port is arranged in the valve body, and the breather valve structure also comprises a valve core, wherein the valve core closes the valve body channel when the pressure difference between the inside and the outside of the oil tank is less than a set value and conducts the valve body channel when the pressure difference is greater than the set value;
the filtering device comprises an oil mist filter element and a water-gas filter element, wherein the oil mist filter element is used for condensing and filtering oil mist in gas released by the oil tank main body to form oil drops;
the breather valve structure, the oil mist filter element and the water vapor filter element are all arranged in the communicating channel and are sequentially distributed from the inner opening to the outer opening;
the respirator is also provided with an oil return channel, one end of the oil return channel extends to the oil mist filter element, and the other end of the oil return channel is used for extending into the oil tank main body so as to guide oil drops formed by condensation and filtration of the oil mist filter element to flow back into the oil tank main body.
The utility model has the advantages that: during the use, when the oil tank outwards breathes out, gaseous breathing valve structure, oil mist filter core and aqueous vapor filter core that loop through prevent that the oil mist from leaking, when the oil tank breathes in, gaseous moisture and the impurity that loop through aqueous vapor filter core, oil mist filter core and breathing valve structure in the air from entering into the oil tank and polluting fluid. The utility model discloses in, return channel can filter the oil droplet guide backward flow that the oil mist formed with oil mist filter core condensation to the oil tank main part in, has realized the recovery reuse of fluid, practices thrift the cost, realizes the recovery that oil drips. Moreover, after oil drops are guided to flow back to the oil tank main body in time, the oil drops can be prevented from being accumulated at the oil mist filter element, so that the pressure difference of the oil mist filter element is high, the oil tank cannot breathe normally, and equipment such as a pump matched with the oil tank breaks down.
Further, the shell is provided with at least two separators extending into the communication channel, each separator is sequentially arranged at intervals along the extending direction of the communication channel, one end of each separator is fixed on the inner wall of the communication channel, the other end of each separator is provided with or forms an airflow channel for gas to pass through with the corresponding inner wall of the communication channel, and the ends of the airflow channels in any two adjacent separators are arranged in a staggered mode, so that the labyrinth type communication channel is formed inside the shell. The labyrinth type communication channel can reduce the flowing speed of gas, avoid the phenomenon that the filter element cannot filter the gas in time due to overlarge gas flow speed, namely, the gas forcibly passes through the labyrinth type communication channel, and weaken the filtering effect of the filter element.
Further, the intercommunication passageway transversely extends, valve body, oil mist filter core and aqueous vapor filter core all extend from top to bottom and transversely arrange in proper order, the valve body lower extreme sets firmly on the casing and encloses to be located the internal orifice is outside, the upper end with the inner wall interval of casing is arranged, oil return opening has been seted up to the oil return passageway on the lower extreme of valve body or casing, and the oil mist filter core communicates with the oil tank main part through this oil return opening. The oil mist filter element extends up and down, so that oil drops flow downwards in time and are recovered, an oil return opening is formed in the valve body or the shell, oil drops can flow back conveniently, and the structure is simpler.
Furthermore, the valve core comprises a valve rod which penetrates through the shell in a vertically moving manner, the valve core comprises a main valve core fixedly arranged at the lower end of the valve rod, the upper end of the valve rod, which penetrates out of the shell, is provided with a stopping piece, and a spring which pushes the stopping piece upwards is arranged between the stopping piece and the shell in a pressing manner, the upper end opening of the valve body is of a closing structure, the main valve core is used for being matched with the upper end opening of the valve body to seal a valve body channel, the valve core also comprises a pressure relief valve core which is arranged in the main valve core in a reciprocating way, the pressure relief valve core comprises a small-diameter section which is in guide fit with the main valve core and a large-diameter section which prevents the main valve core from falling off downwards, a step surface formed by the large-diameter section and the small-diameter section is used for being matched with the main valve core to seal a gas passage between the small-diameter section and the main valve core, the pressure relief valve core can be jacked up by gas in the oil tank main body to enable the step surface to be separated from the main valve core, and can move downwards under the action of self weight and/or elastic external force to be matched with the main valve core. The main valve core and the pressure relief valve core are arranged together, so that two-way conduction and sealing can be realized, and the structure is simpler.
Furthermore, the upper end opening of the valve body is a conical opening, and the upper end of the main valve core is a conical end which is matched and pressed with the conical opening. Through the toper cooperation, can improve the sealed effect between main valve core and the valve body.
Further, the stop member is a nut screwed on the valve rod through threads, and the nut is arranged on the valve rod in an adjustable manner in the vertical position. Through adjusting nut, can change the pre-pressure of spring, adjust the pressure value that main valve core opened, adjust in real time to different oil tank service environments.
Further, the casing is including being used for fixing the base in the oil tank main part, still including being located the base top and with the upper cover that the base components of a whole that can function independently was arranged, the upper cover supports on the base through oil mist filter core locating plate and aqueous vapor filter core locating plate, and wherein one end of two locating plates is fixed in corresponding base or upper cover, and the other end sets up the through groove that supplies gaseous to pass through, the oil mist filter core can be dismantled with the plug bush and link up the groove place one end outside in the oil mist filter core locating plate, and the aqueous vapor filter core can be dismantled with the plug bush and link up the groove place one end outside. The oil mist filter core locating plate, the filter core that aqueous vapor filter core locating plate easy to assemble corresponds, the casing is assembled by base, upper cover, oil mist filter core locating plate and aqueous vapor filter core locating plate components of a whole that can function independently and is formed, is convenient for change oil mist filter core and aqueous vapor filter core.
Further, still be equipped with the drain on the casing, the drain with the aqueous vapor filter core corresponds and arranges, and the drain is used for supplying to filter the water droplet and the impurity outflow casing that form by the aqueous vapor filter core. The drain can filter the back with the aqueous vapor filter core and can't carry out absorptive water droplet and in time discharge, avoids the aqueous vapor filter core to cause the influence to gaseous passing through.
Furthermore, the cross-section of base is the dicyclo-shaped, has the central inner chamber that is used for with the oil tank main part intercommunication and outside annular inner chamber in the base, and central inner chamber, the equal opening of annular inner chamber are up, oil mist filter core locating plate corresponds to support in central inner chamber, oil return channel corresponds the setting on the central inner chamber, water gas filter core locating plate corresponds to support in annular inner chamber, the drain corresponds the setting on the annular inner chamber. A central inner cavity and an annular inner cavity are arranged in the base, and the central inner cavity and the annular inner cavity are relatively independent, so that the sewage draining outlet and the oil return channel are separated, and mutual interference is avoided.
The utility model discloses the technical scheme of oil tank is: the oil tank comprises an oil tank main body and a breather arranged on the oil tank main body, wherein the breather comprises
The shell is fixedly arranged on the oil tank main body when in use and is provided with a communicating channel for communicating the inside and the outside of the oil tank main body, and the communicating channel is provided with an inner opening for communicating the oil tank main body and an outer opening deviating from the oil tank main body;
the breather valve structure comprises a valve body arranged in a shell, a valve body channel communicated with and communicated with an inner port is arranged in the valve body, and the breather valve structure also comprises a valve core, wherein the valve core closes the valve body channel when the pressure difference between the inside and the outside of the oil tank is less than a set value and conducts the valve body channel when the pressure difference is greater than the set value;
the filtering device comprises an oil mist filter element and a water-gas filter element, wherein the oil mist filter element is used for condensing and filtering oil mist in gas released by the oil tank main body to form oil drops;
the breather valve structure, the oil mist filter element and the water vapor filter element are all arranged in the communicating channel and are sequentially distributed from the inner opening to the outer opening;
the respirator is also provided with an oil return channel, one end of the oil return channel extends to the oil mist filter element, and the other end of the oil return channel is used for extending into the oil tank main body so as to guide oil drops formed by condensation and filtration of the oil mist filter element to flow back into the oil tank main body.
The utility model has the advantages that: during the use, when the oil tank outwards breathes out, gaseous breathing valve structure, oil mist filter core and aqueous vapor filter core that loop through prevent that the oil mist from leaking, when the oil tank breathes in, gaseous moisture and the impurity that loop through aqueous vapor filter core, oil mist filter core and breathing valve structure in the air from entering into the oil tank and polluting fluid. The utility model discloses in, return channel can filter the oil droplet guide backward flow that the oil mist formed with oil mist filter core condensation to the oil tank main part in, has realized the recovery reuse of fluid, practices thrift the cost, realizes the recovery that oil drips. Moreover, after oil drops are guided to flow back to the oil tank main body in time, the oil drops can be prevented from being accumulated at the oil mist filter element, so that the pressure difference of the oil mist filter element is high, the oil tank cannot breathe normally, and equipment such as a pump matched with the oil tank breaks down.
Further, the shell is provided with at least two separators extending into the communication channel, each separator is sequentially arranged at intervals along the extending direction of the communication channel, one end of each separator is fixed on the inner wall of the communication channel, the other end of each separator is provided with or forms an airflow channel for gas to pass through with the corresponding inner wall of the communication channel, and the ends of the airflow channels in any two adjacent separators are arranged in a staggered mode, so that the labyrinth type communication channel is formed inside the shell. The labyrinth type communication channel can reduce the flowing speed of gas, avoid the phenomenon that the filter element cannot filter the gas in time due to overlarge gas flow speed, namely, the gas forcibly passes through the labyrinth type communication channel, and weaken the filtering effect of the filter element.
Further, the intercommunication passageway transversely extends, valve body, oil mist filter core and aqueous vapor filter core all extend from top to bottom and transversely arrange in proper order, the valve body lower extreme sets firmly on the casing and encloses to be located the internal orifice is outside, the upper end with the inner wall interval of casing is arranged, oil return opening has been seted up to the oil return passageway on the lower extreme of valve body or casing, and the oil mist filter core communicates with the oil tank main part through this oil return opening. The oil mist filter element extends up and down, so that oil drops flow downwards in time and are recovered, an oil return opening is formed in the valve body or the shell, oil drops can flow back conveniently, and the structure is simpler.
Furthermore, the valve core comprises a valve rod which penetrates through the shell in a vertically moving manner, the valve core comprises a main valve core fixedly arranged at the lower end of the valve rod, the upper end of the valve rod, which penetrates out of the shell, is provided with a stopping piece, and a spring which pushes the stopping piece upwards is arranged between the stopping piece and the shell in a pressing manner, the upper end opening of the valve body is of a closing structure, the main valve core is used for being matched with the upper end opening of the valve body to seal a valve body channel, the valve core also comprises a pressure relief valve core which is arranged in the main valve core in a reciprocating way, the pressure relief valve core comprises a small-diameter section which is in guide fit with the main valve core and a large-diameter section which prevents the main valve core from falling off downwards, a step surface formed by the large-diameter section and the small-diameter section is used for being matched with the main valve core to seal a gas passage between the small-diameter section and the main valve core, the pressure relief valve core can be jacked up by gas in the oil tank main body to enable the step surface to be separated from the main valve core, and can move downwards under the action of self weight and/or elastic external force to be matched with the main valve core. The main valve core and the pressure relief valve core are arranged together, so that two-way conduction and sealing can be realized, and the structure is simpler.
Furthermore, the upper end opening of the valve body is a conical opening, and the upper end of the main valve core is a conical end which is matched and pressed with the conical opening. Through the toper cooperation, can improve the sealed effect between main valve core and the valve body.
Further, the stop member is a nut screwed on the valve rod through threads, and the nut is arranged on the valve rod in an adjustable manner in the vertical position. Through adjusting nut, can change the pre-pressure of spring, adjust the pressure value that main valve core opened, adjust in real time to different oil tank service environments.
Further, the casing is including being used for fixing the base in the oil tank main part, still including being located the base top and with the upper cover that the base components of a whole that can function independently was arranged, the upper cover supports on the base through oil mist filter core locating plate and aqueous vapor filter core locating plate, and wherein one end of two locating plates is fixed in corresponding base or upper cover, and the other end sets up the through groove that supplies gaseous to pass through, the oil mist filter core can be dismantled with the plug bush and link up the groove place one end outside in the oil mist filter core locating plate, and the aqueous vapor filter core can be dismantled with the plug bush and link up the groove place one end outside. The oil mist filter core locating plate, the filter core that aqueous vapor filter core locating plate easy to assemble corresponds, the casing is assembled by base, upper cover, oil mist filter core locating plate and aqueous vapor filter core locating plate components of a whole that can function independently and is formed, is convenient for change oil mist filter core and aqueous vapor filter core.
Further, still be equipped with the drain on the casing, the drain with the aqueous vapor filter core corresponds and arranges, and the drain is used for supplying to filter the water droplet and the impurity outflow casing that form by the aqueous vapor filter core. The drain can filter the back with the aqueous vapor filter core and can't carry out absorptive water droplet and in time discharge, avoids the aqueous vapor filter core to cause the influence to gaseous passing through.
Furthermore, the cross-section of base is the dicyclo-shaped, has the central inner chamber that is used for with the oil tank main part intercommunication and outside annular inner chamber in the base, and central inner chamber, the equal opening of annular inner chamber are up, oil mist filter core locating plate corresponds to support in central inner chamber, oil return channel corresponds the setting on the central inner chamber, water gas filter core locating plate corresponds to support in annular inner chamber, the drain corresponds the setting on the annular inner chamber. A central inner cavity and an annular inner cavity are arranged in the base, and the central inner cavity and the annular inner cavity are relatively independent, so that the sewage draining outlet and the oil return channel are separated, and mutual interference is avoided.
Drawings
FIG. 1 is a schematic view of an embodiment of the fuel tank of the present invention;
FIG. 2 is a schematic view of the valve cartridge of FIG. 1;
FIG. 3 is a schematic view of the positioning plate of the water removal filter element shown in FIG. 1;
description of reference numerals: 1-a tank body; 2, a respirator; 3-a base; 4, covering the upper cover; 5-dewatering filter element; 6-a sewage draining outlet; 7-oil return port; 8-dewatering filter element positioning plate; 9-main valve core; 10-a breather valve structure; 11-a valve stem; 12-a nut; 13-a spring; 14-oil mist filter element positioning plate; 15-an oil mist filter element; 16-a breather valve body; 17-inner port; 18-a pressure relief valve spool; 19-air flow channel.
Detailed Description
The following describes embodiments of the present invention with reference to the accompanying drawings.
The utility model discloses a concrete embodiment of oil tank, as shown in fig. 1 to 3, the oil tank includes oil tank main part 1 and installs respirator 2 on oil tank main part 1, and respirator 2 can balance the pressure in oil tank main part 1, makes the pressure in the oil tank main part 1 keep within the scope of settlement, just the utility model discloses a respirator 2 can be to the gas by 1 exhalations of oil tank main part deoiling in proper order, the dewatering, the impurity removal filters, can carry out the dewatering in proper order to the air of 1 inhalations of oil tank main part, the impurity removal, the deoiling is filtered, and can make the oil that the condensation filtered gets off flow back to oil tank main part 1 again, realizes recycle, and can prevent outside aqueous vapor, impurity from entering into the oil tank and make oil quality variation. It should be noted that, when the oil tank returns, the oil tank body 1 exhales outwards, and the oil mist in the gas condenses and separates out after cooling because the gas has a certain temperature immediately after the oil liquid is subjected to the circulating lubrication cooling.
As shown in fig. 1, the breather 2 includes a housing installed on the fuel tank main body 1, in this embodiment, the housing includes a base 3 (which may be non-detachably connected in a welded manner in other embodiments) installed on the fuel tank main body 1 by a thread, and an upper cover 4 covering the base 3, specifically, the base 3 is of a double-ring circular structure, and can be manufactured in an integral punch forming manner during manufacturing, so that a central inner cavity and an annular inner cavity are formed in the base 3. And the welding has oil mist filter core locating plate 14 and dewatering filter core locating plate 8 on the lower extreme terminal surface of upper cover 4, and wherein, oil mist filter core locating plate 14, dewatering filter core locating plate 8 are the annular structure, and oil mist filter core locating plate 14 is corresponding to the central inner chamber of base 3, and dewatering filter core locating plate 8 is corresponding to the annular inner chamber of base 3. The structure of the oil mist filter element positioning plate 14 and the water removing filter element positioning plate 8 is similar, and the water removing filter element positioning plate 8 is illustrated as an example in the embodiment.
The structure of the water removing filter element positioning plate 8 is as shown in fig. 3, the water removing filter element positioning plate 8 is an annular structure, the upper end of the water removing filter element positioning plate is a complete plate body and is welded and fixed with the upper cover 4, the lower end of the water removing filter element positioning plate is provided with a plurality of air flow channels 19 at intervals along the circumferential direction, and the air flow channels 19 are actually through grooves formed in the water removing filter element positioning plate 8. During the equipment, except that water filter core locating plate 8 and oil mist filter core locating plate 14 support on base 3 can, because the height of removing water filter core locating plate 8 and oil mist filter core locating plate 14 is greater than the height of base 3, after the equipment, interval between 4 lower extremes of upper cover 4 on base 3. Therefore, a "labyrinth" passage for communicating the inside and outside of the tank main body 1 as a communication passage is formed in the housing constituted by the base 3 and the upper cover 4, and the mist filter positioning plate 14 and the water removing filter positioning plate 8.
In this embodiment, as shown in fig. 1, an inner opening 17 is formed in the middle of the base 3 and is communicated with the oil tank main body 1, the inner opening 17 is located on the communication channel, and an outer opening of the communication channel is located between the base 3 and the upper cover 4.
Since the respirator 2 in this embodiment is required to meet the following use requirements: the pressure of the tank body 1 is maintained within a certain pressure range; the oil mist is prevented from leaking out when the oil tank main body 1 exhales; when the fuel tank body 1 sucks air, moisture and impurities in the air are prevented from entering the fuel tank body 1.
In order to achieve the above requirements, as shown in fig. 1 and fig. 2, a breather valve structure 10 is installed on a base 3, the breather valve structure 10 includes a breather valve body 16 fixed on the base 3, the breather valve body 16 is a cylindrical structure which is through from top to bottom, a valve body passage is arranged in the middle, the upper end of the breather valve body 16 is closed to form a cone, and the lower end is connected with an inner port 17 and is enclosed outside the inner port 17. The breather valve structure 10 further comprises a valve rod 11 vertically and movably penetrating the upper cover 4, the lower end of the valve rod 11 extends into a breather valve body 16, a main valve element 9 is fixed at the lower end of the valve rod 11, the main valve element 9 is in a shape of a cone with a small upper part and a large lower part, the upper end of the valve rod 11 penetrates out of the upper cover 4, a nut 12 is installed in a threaded mode, a spring 13 is installed between the nut 12 and the upper cover 4 in a pressing mode, the spring 13 can upwards push the nut 12, the valve rod 11 and the main valve element 9, the main valve element 9 and the upper end of the breather valve body 16 are closed and matched in. As shown in fig. 2, a pressure relief valve element 18 is installed in the main valve element 9 in a vertically guiding manner, an anti-drop cone head with a large outer diameter is arranged at the upper end of the pressure relief valve element 18, the pressure relief valve element 18 can be prevented from dropping off downwards, the pressure relief valve element 18 can move downwards to an extreme limit position under the self-weight, and an air passage between the pressure relief valve element 18 and the main valve element 9 is sealed through the matching of the ring surface of the lower end of the anti-drop cone head and the main valve element 9.
In addition, in order to realize filtering, an oil mist filter element 15 is installed at the oil mist filter element positioning plate 14, in this embodiment, the whole oil mist filter element 15 is an annular structure, and the cross section of the side wall of the oil mist filter element 15 is a U-shaped structure with an upward opening, and can be inserted and sleeved outside the lower end of the oil mist filter element positioning plate 14 from bottom to top, wherein the oil mist filter element 15 is the prior art and is not expanded in detail, for example, refer to an oil removal filter layer in the background art. Install dewatering filter core 5 in dewatering filter core locating plate 8 department, dewatering filter core 5 is whole to be the annular structure, and the lateral wall cross-section of dewatering filter core 5 is the U-shaped that the opening faces upward, can top-down plug bush outside the lower extreme of dewatering filter core locating plate 8, and wherein, dewatering filter core 5 is prior art, no longer expandes in detail. The dewatering filter element and the oil mist filter element can refer to a dewatering module and an oil removing module in Chinese utility model with the authorization notice number of CN 208115347U. In this embodiment, the filter element with the water absorption function can be selected from the dewatering filter element 5, or the filter element with the water absorption function can be selected from the dewatering filter element 5.
In this embodiment, since the lower ends of the water removing filter element positioning plate 8 and the oil mist filter element positioning plate 14 are provided with the airflow channels, the air can pass through the airflow channels, when the air flows to the outside from the oil tank main body 1 and flows to the oil tank main body 1 from the outside, the flowing direction of the air is continuously changed, the flowing speed of the air can be reduced, and the air is prevented from flowing too fast to reduce the filtering effect of the filter element.
In this embodiment, as shown in fig. 1, in order to make the oil liquid condensed and filtered by the oil mist filter element 15 flow back to the oil tank main body 1, a circle of multiple oil return ports 7 are formed at the lower end of the breather valve body 16, and the oil return ports 7 are communicated with the oil tank main body 1, so that the oil liquid can be collected in the middle inner cavity of the base 3 and flow back to the oil tank main body 1 through the oil return ports 7 when in use. It should be noted that the inner diameter of the oil return port 7 is small, and when the pressure fluctuation in the tank main body 1 is small, the balance can be achieved by the oil return port 7, but when the pressure fluctuation in the tank main body 1 is large, the function of pressure balance cannot be achieved only by the oil return port 7, and therefore, the presence of the oil return port 7 does not impair the function of the breather valve structure 10.
In this embodiment, as shown in fig. 1, in order to facilitate the discharge of the filtered sewage on the water removal filter element 5, a sewage discharge outlet 6 is provided on the base 3, the sewage discharge outlet 6 corresponds to the water removal filter element 5, and the sewage discharge outlet is located on the annular inner cavity.
The utility model discloses a use as follows: taking an oil tank matched with pumps as an example, the oil tank matched with the pumps is usually in a micro-negative pressure state, so that smooth oil return is ensured. During normal use, pressure release valve core 18 cooperates with main valve element 9 under the dead weight and seals, and main valve element 9 cooperates with breather valve body 16 to realize sealedly in the effect of spring 13, prevents that the gas in the oil tank main part 1 from outwards flowing out by breather valve body 16 department. When 1 pressure of oil tank main part is higher than the allowable value, 1 internal pressure of oil tank main part is with pressure release case 18 jack-up back, and the gas that contains the oil mist releases away, filters formation fluid with the oil mist condensation through oil mist filter core 15, and during oil passes through oil return opening 7 and discharges into oil tank main part 1, later releases to the atmosphere through dewatering filter core 5, and pressure balance back pressure release case 18 is closed under the action of gravity, keeps pressure balance.
When the internal pressure of the oil tank main body 1 is negative pressure and exceeds a set value, external air filters water vapor and impurities through the water removal filter element 5 and then is discharged through the sewage discharge outlet 6, the water vapor and the impurities are secondarily filtered through the oil mist filter element 15, the main valve element 9 is pushed downwards under the action of internal and external pressure difference, the main valve element 9 is opened to form an air flow channel and then enters the oil tank main body 1, the negative pressure of the oil tank main body 1 gradually reaches the set value, and the main valve element 9 is closed under the action of the spring 13.
In this embodiment, upper cover, base, two locating plates have constituted the casing for two filter cores can removable installation and in time change, in other embodiments, the structure that casing self can the formula as an organic whole, in the casing installation two filter cores can. In other embodiments, the housing may extend vertically, and only the oil return passage needs to be provided at the bottom of the oil mist filter element.
In this embodiment, the passage from the oil mist filter element to the inner opening is an oil return passage, and the oil return opening is located on the oil return passage.
In this embodiment, both filter elements are annular filter elements, and it should be noted that in other embodiments, when the communication channel is a straight channel, the filter element is adaptively replaced with a plate-shaped filter element.
In the embodiment, the breather valve comprises a main valve core and a pressure relief valve core, in other embodiments, two one-way valves can be arranged in a valve body channel of the valve body, one of the one-way valves is communicated from outside to inside in a one-way mode, and when the external pressure of the oil tank is greater than the internal pressure and the differential pressure reaches a certain value, the one-way valve is communicated to realize air suction; and the other one-way valve is communicated from inside to outside in a one-way mode, and when the external pressure of the oil tank is smaller than the internal pressure and the differential pressure reaches a certain value, the one-way valve is communicated to realize expiration.
In this embodiment, the anti-separation conical head on the pressure relief valve core forms a large-diameter section, the pressure relief valve core part below the anti-separation conical head forms a small-diameter section, and the ring surface at the lower end of the anti-separation conical head forms a step surface.
In the embodiment, the oil return passage is arranged inside the shell, and in other embodiments, an oil return pipe can be additionally arranged on the shell so as to return oil in time.
The present embodiment will be described with respect to the case where the inside of the tank main body is a negative pressure, but it should be noted that the present embodiment can also be used when the inside of the tank main body is a slight positive pressure.
In this embodiment, the filter core is fixed through the locating plate that corresponds respectively, and in other embodiments, the filter core can be fixed alone on the inner wall of intercommunication passageway, for example adopt non-detachable welding mode etc..
In this embodiment, the two positioning plates and the annular edges protruding upward in the base form a partition, and the communication passage forms a labyrinth-type communication passage.
In the present embodiment, the positioning plate has an airflow channel, and in other embodiments, when the positioning plate only functions to form a "labyrinth" communication channel, one end of the partition may be spaced apart from an inner wall of the communication channel to form the airflow channel. Of course, in other embodiments, the communication channel may be a through channel for the sake of simplifying the structure.
In this embodiment, the upper end of the positioning plate is welded and fixed with the upper cover, and the lower end is supported on the base.
In this embodiment, the upper end of the valve body is a tapered opening, and the upper end of the main valve element is correspondingly a tapered end, in other embodiments, the upper end of the valve body is still in a closing structure, but is a straight cylindrical closing, and at this time, the shape of the upper end of the main valve element should be adaptively changed, that is, changed into a plane shape.
In this embodiment, the nut forms a stop member capable of adjusting the preload of the spring, and in other embodiments, the stop member may be an outwardly turned edge fixed to the valve stem.
In this embodiment, the pressure relief valve element returns under its own weight, and in other embodiments, a spring may be disposed between the pressure relief valve element and the main valve element, so that the pressure relief valve element returns under the elastic force of the spring.
The utility model discloses the concrete embodiment of respirator, the structure of respirator and the unanimity of above-mentioned embodiment, its content is no longer repeated.
Claims (10)
1. A respirator, characterized in that: comprises that
The shell is fixedly arranged on the oil tank main body when in use and is provided with a communicating channel for communicating the inside and the outside of the oil tank main body, and the communicating channel is provided with an inner opening for communicating the oil tank main body and an outer opening deviating from the oil tank main body;
the breather valve structure comprises a valve body arranged in a shell, a valve body channel communicated with and communicated with an inner port is arranged in the valve body, and the breather valve structure also comprises a valve core, wherein the valve core closes the valve body channel when the pressure difference between the inside and the outside of the oil tank is less than a set value and conducts the valve body channel when the pressure difference is greater than the set value;
the filtering device comprises an oil mist filter element and a water-gas filter element, wherein the oil mist filter element is used for condensing and filtering oil mist in gas released by the oil tank main body to form oil drops;
the breather valve structure, the oil mist filter element and the water vapor filter element are all arranged in the communicating channel and are sequentially distributed from the inner opening to the outer opening;
the respirator is also provided with an oil return channel, one end of the oil return channel extends to the oil mist filter element, and the other end of the oil return channel is used for extending into the oil tank main body so as to guide oil drops formed by condensation and filtration of the oil mist filter element to flow back into the oil tank main body.
2. The respirator of claim 1, wherein: the shell is provided with at least two separators extending into the communication channel, each separator is sequentially arranged at intervals along the extending direction of the communication channel, one end of each separator is fixed on the inner wall of the communication channel, the other end of each separator is provided with or forms an airflow channel for air to pass through with the corresponding inner wall of the communication channel, and one end of the airflow channel in any two adjacent separators is arranged in a staggered mode, so that a labyrinth type communication channel is formed inside the shell.
3. The respirator of claim 1, wherein: the intercommunication passageway transversely extends, valve body, oil mist filter core and aqueous vapor filter core all extend from top to bottom and transversely arrange in proper order, the valve body lower extreme sets firmly on the casing and encloses to be located the internal orifice outside, the upper end with the inner wall interval of casing is arranged, oil return channel has seted up the oil return opening on the lower extreme of valve body or casing, and the oil mist filter core communicates with the oil tank bulk phase through this oil return opening.
4. The respirator of claim 3, wherein: the valve core comprises a valve rod which penetrates through the shell in an up-and-down moving mode, the valve core comprises a main valve core fixedly arranged at the lower end of the valve rod, the upper end of the valve rod, which penetrates out of the shell, is provided with a stopping piece, a spring which pushes the stopping piece upwards is arranged between the stopping piece and the shell in a pressing mode, the upper end opening of the valve body is of a closing structure, the main valve core is used for being matched with the upper end opening of the valve body to seal a valve body channel, the valve core also comprises a pressure relief valve core which is arranged in the main valve core in a reciprocating way, the pressure relief valve core comprises a small-diameter section which is in guide fit with the main valve core and a large-diameter section which prevents the main valve core from falling off downwards, a step surface formed by the large-diameter section and the small-diameter section is used for being matched with the main valve core to seal a gas passage between the small-diameter section and the main valve core, the pressure relief valve core can be jacked up by gas in the oil tank main body to enable the step surface to be separated from the main valve core, and can move downwards under the action of self weight and/or elastic external force to be matched with the main valve core.
5. The respirator of claim 4, wherein: the upper end opening of the valve body is a conical opening, and the upper end of the main valve core is a conical end which is matched with the conical opening in a jacking mode.
6. The respirator of claim 4, wherein: the stop piece is a nut screwed on the valve rod through threads, and the nut is arranged on the valve rod in an adjustable mode in the vertical position.
7. A respirator according to any one of claims 1 to 6, wherein: the casing is including being used for fixing the base in the oil tank main part, still including being located the base top and with the upper cover that the base components of a whole that can function independently was arranged, the upper cover passes through oil mist filter core locating plate and aqueous vapor filter core locating plate and supports on the base, and wherein one end of two locating plates is fixed in corresponding base or upper cover, and the other end sets up the through groove that supplies gaseous to pass through, the oil mist filter core can be dismantled with the plug bush and link up the groove place one end outside in the oil mist filter core locating plate, and the aqueous vapor filter core can be dismantled with the plug bush and link up the groove.
8. A respirator according to any one of claims 1 to 6, wherein: still be equipped with the drain on the casing, the drain with the aqueous vapor filter core corresponds the arrangement, and the drain is used for supplying to filter the water droplet and the impurity outflow casing that forms by the aqueous vapor filter core.
9. The respirator of claim 7, wherein: the cross-section of base is the dicyclo-shaped, has the central inner chamber that is used for with the oil tank main part intercommunication and outside annular inner chamber in the base, and central inner chamber, the equal opening of annular inner chamber up, oil mist filter core locating plate correspond to support in central inner chamber, oil return channel corresponds the setting on the central inner chamber, water vapor filter core locating plate corresponds to support in annular inner chamber, be equipped with the drain on the annular inner chamber, the drain with water vapor filter core corresponds arranges, and the drain is used for supplying to filter the water droplet and the impurity outflow casing that forms by water vapor filter core.
10. The utility model provides an oil tank, includes the oil tank main part, still including locating the respirator on the oil tank main part, its characterized in that: the respirator is as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921112025.5U CN210890998U (en) | 2019-07-16 | 2019-07-16 | Breather and oil tank using same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921112025.5U CN210890998U (en) | 2019-07-16 | 2019-07-16 | Breather and oil tank using same |
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| CN210890998U true CN210890998U (en) | 2020-06-30 |
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| CN201921112025.5U Active CN210890998U (en) | 2019-07-16 | 2019-07-16 | Breather and oil tank using same |
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| CN (1) | CN210890998U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112098101A (en) * | 2020-09-23 | 2020-12-18 | 常州大学 | Pressure relief and gas collection device for constant volume combustion bomb |
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2019
- 2019-07-16 CN CN201921112025.5U patent/CN210890998U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112098101A (en) * | 2020-09-23 | 2020-12-18 | 常州大学 | Pressure relief and gas collection device for constant volume combustion bomb |
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