JP6519146B2 - Vehicle oil catch tank - Google Patents

Description

  The present invention relates to a vehicle oil catch tank that separates a mixture ejected from an air dryer into an impurity and discharge air.

  Patent Document 1 describes an oil catch tank including a casing, an inflow portion, an exhaust portion, a pressure reducing means, and a partition plate. The inflow portion is provided above the casing and connected to the air dryer. The exhaust unit has a chimney shape, and is provided above the casing to exhaust the discharge air ejected from the air dryer to the atmosphere. The pressure reducing means is contained in the casing and reduces the flow momentum by circulating a mixture of the impurity and the discharge air flowing in from the inflow portion. The partition plate is accommodated in the casing and divides the casing internal space into an upper layer portion and a lower layer portion. A plurality of ventilating holes are formed in the partition plate. The upper portion of the pressure relief means is connected to the inflow portion so as not to be discontinuous, and the mixture flows into the pressure relief means without leaking.

  The mixture of the impurity and the discharge air ejected from the air dryer enters the inside of the oil catch tank via the inflow portion, and flows down the pressure relief means from the top. At that time, the force of the mixture is decelerated by the pressure relieving means, and the discharge air is separated from the impurities and out of the pressure relieving means, and is exhausted from the exhaust part into the atmosphere through the upper layer of the oil catch tank. Ru. On the other hand, the impurities, which have a large specific gravity, flow downward to the pressure reducing means, and are accumulated in the lower portion of the oil catch tank.

Patent 5557214 gazette

  In the oil catch tank of Patent Document 1, a plurality of ventilating holes are formed in the partition plate. Therefore, when the accumulated amount of the impurities in the oil catch tank increases and the liquid surface of the impurities rises, the accumulated impurities are highly repellent due to the pressure of discharge air flowing from the air dryer, the vibration of the vehicle, etc. It may rise and pass through the ventilation holes and be discharged from the exhaust unit.

  Then, this invention aims at provision of the oil catch tank of the vehicle which can prevent discharge | emission of the impurity from an exhaust part.

In order to achieve the above object, the present invention is disposed under an air dryer which ejects impurities trapped from pressurized air as a mixture with discharge air, and separates the mixture jetted from the air dryer into impurities and discharge air. An oil catch tank for a vehicle, comprising a tank body, a filter, a filter cover, a partition plate, an inflow portion, and an exhaust portion.

The tank body has a bottomed cylindrical case body open at one side, and a lid fixed to the case body to close one side of the case body, and defines an internal space in the tank at the vehicle body side It is fixed. The filter has a tubular body and a pressure relief material, and is disposed in the space in the tank. The cylindrical body divides the space in the filter inward by the circumferential surface portion in which the plurality of through holes are formed. The pressure relief material is accommodated in the space in the filter. The filter cover has a cover surface and is fixed to the lid. A partition plate is provided in the filter cover, it is arranged below the filter in the tank space, dividing the tank space and tank headspace and tank bottom space. The inflow portion is provided in the tank main body to communicate the filter internal space with the outside of the tank main body, and allows the mixture ejected by the air dryer to flow into the filter internal space. The exhaust unit is provided at an upper portion of the tank body, has an exhaust port formed in the case body and opened , and communicates the upper space in the tank with the outside of the tank body.

  The mixture flowing into the inner space of the filter from the inflow part is reduced in flow momentum by the pressure reducing material, separated into gas and impurities, and flows out from the through hole. The impurities separated from the mixture are stored at the bottom of the lower space in the tank, and the gas separated from the mixture is discharged from the exhaust unit to the outside.

The cover surface portion of the filter cover faces the circumferential surface portion of the cylindrical body on one surface, and the exhaust port on the other surface opposite to the one surface. The partition plate does not have a hole that communicates the upper space in the tank with the lower space in the tank, and forms a gap between the upper space in the tank and the lower space in the tank between the inner surface of the tank body.

  In the above configuration, the partition plate does not have a hole that communicates the upper space in the tank and the lower space in the tank. Therefore, when the accumulated amount of the impurity in the space in the tank increases and the liquid surface of the impurity rises, the impurity is splashed high due to the pressure of the discharge air flowing from the air dryer, the vibration of the vehicle, etc. Even if there are impurities, impurities do not pass through the partition plate and reach the exhaust part. In addition, even if the impurities that are splashed in the lower space in the tank pass through the gap between the partition plate and the inner surface of the tank main body, the movement of the impurity toward the exhaust part is reliably blocked by the inner surface of the tank main body Be done. Therefore, the discharge of impurities from the exhaust part can be prevented.

  Further, the filter may be fixed to the tank main body in a mounting state in which the tank main body is fixed to the vehicle body side in a posture in which the axial center of the cylindrical body intersects with the vertical direction.

  In the above configuration, the tank main body is fixed to the vehicle body side in a posture in which the axial center of the filter intersects with the vertical direction. As described above, since the tank body is fixed to the vehicle body side in the horizontally long attitude (so-called horizontal attitude), the height of the tank body increases or decreases according to the size of the outer diameter of the filter. Therefore, the restriction in the height direction can be flexibly coped with as compared with the case where the tank body is fixed to the vehicle body side in a posture in which the axial center of the filter is in the vertical direction (a so-called vertical posture). Therefore, the oil catch tank can be arranged even in the tank mounting area on the vehicle body side where restrictions in the height direction are severe.

  According to the oil catch tank of the present invention, discharge of impurities from the exhaust part can be prevented.

It is a block diagram which shows typically the system provided with the oil catch tank which concerns on one Embodiment of this invention. It is a side view of the oil catch tank of this embodiment. It is a front view of the oil catch tank of FIG. It is IV-IV arrow sectional drawing of FIG. It is a top view of the oil catch tank of FIG. It is the VI-VI arrow sectional drawing of FIG.

  Hereinafter, an oil catch tank 10 according to an embodiment of the present invention will be described based on the drawings.

  As shown in FIG. 1, the oil catch tank 10 constitutes an air system for removing impurities from pressurized air supplied to the air tank 4 by the air compressor 1 together with the air dryer 2. The air compressor 1, the air tank 4, the air dryer 2, and the oil catch tank 10 are fixed to the vehicle body side. The air compressor 1 is driven by an engine (not shown) and supplies pressurized air to the air tank 4 via the air supply pipe 3. The oil catch tank 10 is connected to the air dryer 2 by a connecting pipe 5.

  The air dryer 2 is provided in the middle of the air supply pipe 3. In the air dryer 2, an oil filter, a drain valve, a governor part, a desiccant and the like are provided (all not shown). The pressurized air flowing from the air compressor 1 into the air dryer 2 is supplied to the air tank 4 after impurities such as oil mist are removed by passing through the oil filter and water is removed by passing through the desiccant. Ru. When the air pressure of the air system or air tank 4 reaches a predetermined high specified pressure, the governor operates to open the drain valve, and the impurities and water temporarily trapped in the oil filter are integrated with the discharge air. It flows out to the downstream connecting pipe 5 as a stagnant mixture. Thus, the air dryer 2 removes the impurities from the pressurized air and supplies it to the air tank 4, and ejects the impurities captured from the pressurized air as a mixture with the discharge air.

  The oil catch tank 10 is disposed below the air dryer 2 and separates the mixture ejected from the air dryer 2 into impurities and discharge air (gas).

  As shown in FIGS. 2 to 6, the oil catch tank 10 includes the tank body 11, the filter 12, the partition plate 13, the inflow portion 14, the exhaust portion 15, the indicator portion 16, and the drain discharge portion 17. It is fixed in place. In the following, the oil catch tank 10 in an attached state fixed to the vehicle body side will be described.

  The tank main body 11 has a bottomed cylindrical case body 18 opened at one side (right side in FIG. 4), and a lid 19 closing the opening of the case body 18. The case body 18 is fixed to the lid 19 by a plurality of bolts 20 and nuts 21, and the case body 18 and the lid 19 define a tank internal space 22 inside the tank body 11. A tank mounting piece 23 projects from the upper portion of the case body 18 and the oil catch tank 10 is fixed to the vehicle body side by fastening and fixing the tank mounting piece 23 to the bracket 7 of the vehicle body frame 6.

  As shown in FIG. 4, the inflow portion 14 includes a connection pipe portion 33 to which the connection pipe 5 (see FIG. 1) is connected, and an introduction pipe portion 34 communicating with the connection pipe portion 33 and projecting into the tank space 22. And is integrally formed on the vertical wall portion (side wall portion on one side of the tank main body 11) 35 of the lid 19. The connection pipe portion 33 and the introduction pipe portion 34 form a mixture inflow passage 58 which communicates the outside of the tank main body 11 with the in-tank space 22.

  The filter 12 has a cylindrical body 24, a pressure relief material 25, a one-side closing plate 26 and a other-side closing plate 27, and is disposed in the in-tank space 22. The cylindrical body 24 has a cylindrical shape in which both ends of one side and the other side (left side in FIG. 4) are open. A plurality of through holes 29 are formed in the peripheral surface portion 28 of the cylindrical body 24, and the filter internal space 30 is partitioned by the peripheral surface portion 28 inside the cylindrical body 24. The pressure relief material 25 is accommodated in the filter internal space 30. The pressure reducing material 25 may be any material capable of reducing the momentum of the flow of the mixture flowing at high pressure, and, for example, wool in which a fine metal hole or a synthetic resin material is rolled to form a fine air hole. A laminated body in which sheet-like materials having a mesh structure are stacked, a resin-made sponge body having continuous pores, or the like is used.

  The one-side closing plate 26 and the other-side closing plate 27 have a disc shape in which the supported holes 31 and 32 are formed, and close the openings at one end and the other end of the cylindrical body 24 respectively. The introduction pipe portion 33 of the inflow portion 14 is inserted into the supported hole 31 of the one-side closing plate 26 from one side, and the one-side closing plate 26 is supported by the introduction pipe portion 33. A filter support member 37 fastened and fixed to the vertical wall portion (side wall portion on the other side of the tank main body 11) 36 of the case body 18 is inserted from the other side into the supported hole 32 of the other side closing plate 27 The other side closing plate 27 is supported by the member 37. By fastening the filter support member 37 to the case body 18, the cylindrical body 24 is held between the one-side closing plate 26 and the other-side closing plate 27, and the filter 12 is fixed to the tank body 11 in a predetermined posture. Ru. In this predetermined posture, the axial center (cylindrical axial center) 70 of the cylindrical body 24 extends substantially horizontally substantially perpendicularly to the vertical direction.

  The mixture inflow passage 58 of the inflow portion 14 penetrates the one-side closing plate 26 to communicate the filter internal space 30 with the outside of the tank main body 11 and is connected to the air dryer 2. The mixture ejected from the air dryer 2 flows from the mixture inflow path 58 into the space 30 in the filter (see the arrow 71 in FIG. 4), the pressure relaxation material 25 reduces the flow momentum and separates into discharge air and impurities. It flows out of the through hole 29. Impurities that have flowed out of the through hole 29 are stored in the bottom portion 46 of the tank space 22 (see arrow 72 in FIG. 4), and the discharge air that has flowed out of the through hole 29 is discharged from the exhaust unit 15 to the outside (atmosphere) (See arrow 73 in FIG. 4).

A filter cover 38 is provided on the other side of the in-tank space 22 to cover the other side of the filter 12. The filter cover 38 is integrally provided with an extension plate 39 extending linearly and substantially horizontally between the one side and the other side of the tank internal space 22 below the filter 12. The extension plate 39 is a flat plate having a narrow width substantially orthogonal to the vertical direction, and a part of the extension plate 39 covers the other side of the filter 12 together with the filter cover 38. One end of the extension plate 39 is bent downward and is fastened and fixed to the lid 19. The filter cover 38 has a circumferential surface portion 40 covering the outer circumferential surface of the filter 12 (cylindrical body 24), and a side surface portion 41 covering the other end surface (other side closing plate 27) of the filter 12. A support hole 42 is formed in the side surface portion 41, and the filter support member 37 is inserted into the support hole 42 from the other side. The filter support member 37 has a small diameter portion 43 through which the supported holes 32 and 42 are inserted, a large diameter portion 44 whose diameter increases stepwise from the other end of the small diameter portion 43, and a bolt which protrudes from the other end of the large diameter portion 44 It has the part 45 integrally. The vertical wall portion 36 of the case body 18 is formed with a bolt insertion hole 47 through which the bolt portion 45 is inserted.

  Before assembling the case body 18 to the lid 19, the introduction pipe portion 33 is inserted into the supported hole 31 of the one-side closing plate 26, and the cylindrical body 24 is interposed between the one-side closing plate 26 and the other-side closing plate 27. The filter 12 and the filter cover 38 are temporarily held on the lid 19 by holding the side surface portion 41 of the filter cover 38 on the other side closing plate 27 and fastening and fixing one end of the extension plate 39 to the lid 19. Ru. In this state, the small diameter portion 43 of the filter support member 37 is inserted into the supported holes 32 and 42 of the filter cover 38 and the other side closing plate 27, and the case body 18 is assembled to the lid 19. The filter 12 and the filter cover 38 are fixed to the tank main body 11 by inserting the bolt portion 45 of the filter support member 37 into 47 and screwing and tightening the nut 48 to the bolt portion 45 protruding to the outside of the case body 18. Ru. In such a state, the filter cover 38 is separated from the inner surface of the case body 18 and the outer surface of the filter 12.

  The partition plate 13 is fixed to the lower surface of the extension plate 39 of the filter cover 38 and divides the tank interior space 22 into an upper tank interior space 49 and a lower tank interior space 50. The partition plate 13 is a non-porous plate that does not have a hole that communicates the tank upper space 49 with the tank lower space 50, and between the tank upper space 49 and the tank lower space with the inner surface of the tank body 11. A gap 51 communicating with 50 is formed (see FIG. 6). The partition plate 13 of the present embodiment is a flat metal plate disposed substantially horizontally so as to be substantially perpendicular to the vertical direction, and has a horizontal width longer than the outer diameter of the filter 12 (cylindrical body 24). Impurities that flowed out of the filter 12 (through hole 29) above the partition plate 13 drip onto the partition plate 13 and flow down from the gap 51 to the tank lower space 50 to form the tank inner space 22 (tank inner space 50). ) In the bottom 46 of the The partition plate 13 may be inclined with respect to the horizontal direction, or may be bent or curved so that the peripheral edge is lower than the center. Further, the width of the partition plate 13 may be set to a length substantially equal to the outer diameter of the filter 12.

  The exhaust unit 15 is provided at an upper portion of the other side (the other side of the case body 18) of the tank body 11 and communicates the tank upper space 49 with the outside of the tank body 11. The exhaust unit 15 has an exhaust port 52 formed in the case body 18 and opened upward, and a duct section 54 bent in a reverse U shape from the exhaust port 52 to form an exhaust passage 53 opened downward. The filter cover 38 is disposed between the filter 12 and the exhaust port 52, and the exhaust port 52 is shielded from the filter 12 by the filter cover 38. The duct portion 54 is provided along the upper corner of the other end of the case body 18 to form an exhaust passage 53 between the case body 18 and the lower side between the case wall 18 and the vertical wall portion 36 of the case body 18. An outlet 55 is formed to open. The outlet 55 is set at a lower position than the outlet 52.

  The drain discharge portion 17 has a drain discharge passage 56 which communicates the lower tank interior space 50 with the outside of the tank main body 11 at the lower part of the lid 19 and a drain cock 57 capable of opening and closing the drain discharge passage 56. At the time of maintenance inspection or the like, by opening the drain cock 57, the impurity deposited on the bottom portion 46 of the in-tank space 22 can be discharged from the drain discharge passage 56 into a container or the like for processing.

  As shown in FIGS. 2 and 3, the indicator portion 16 has an indicator pipe portion 59 extending vertically in the outside of the lid 19 and communicating the bottom 46 (see FIG. 4) of the in-tank space 22 with the top. . The indicator tube portion 59 is formed of a transparent or semi-transparent resin or the like that allows the liquid level inside to be visible from the outside, and is deposited on the bottom 46 of the tank internal space 22 by visually recognizing the liquid level in the indicator tube portion 59. The accumulated amount of impurities can be grasped.

  According to the present embodiment, since the non-porous plate not having the hole communicating the upper space 49 in the tank and the lower space 50 in the tank is used as the partition plate 13, Even if the impurity is splashed high due to the pressure of the discharge air flowing from the air dryer 2 or the vibration of the vehicle with the storage amount increased and the liquid surface of the impurity rising, the impurity is the partition plate It does not pass through 13 and reach the exhaust part 15 (the exhaust port 52). In addition, even when the impurity that has been splashed in the lower space 50 in the tank passes through the gap 51 between the partition plate 13 and the inner surface of the tank main body 11, the movement of the impurity toward the exhaust unit 15 It is reliably blocked by the inner surface etc. Therefore, the discharge of impurities from the exhaust unit 15 can be prevented.

  In addition, since the filter cover 38 is disposed between the filter 12 and the exhaust port 52 and the exhaust port 52 is shielded from the filter 12 by the filter cover 38, impurities from the filter 12 to the exhaust part 15 (the exhaust port 52) Even in the case of jumping out, the filter cover 38 prevents the movement of the impurities, so the impurities are not discharged from the exhaust unit 15 to the outside.

  Further, the tank main body 11 is fixed to the vehicle body side in a posture in which the axial center 70 of the filter 12 (cylindrical body 24) is substantially orthogonal to the vertical direction. As described above, since the tank body 11 is fixed to the vehicle body side in a horizontally long attitude (a so-called horizontal attitude), the height of the tank body 11 is not the length of the filter 12 but the outside diameter of the filter 12 Increase or decrease depending on Therefore, it is possible to flexibly cope with the restriction in the height direction as compared with the case where the tank body is fixed to the vehicle body side with the axial center 70 of the filter 12 along the vertical direction (so-called vertical posture). . Therefore, the oil catch tank 10 can be arranged even in the tank mounting area on the vehicle body side where the restriction in the height direction is severe.

  Although the embodiment to which the invention made by the inventor is applied has been described above, the present invention is not limited by the description and the drawings that form a part of the disclosure of the present invention according to this embodiment. That is, it is needless to say that other embodiments, examples, operation techniques and the like made by those skilled in the art based on this embodiment are all included in the scope of the present invention.

  For example, in the embodiment described above, the so-called horizontal-type oil catch tank 10 is described in which the tank body 11 is fixed to the vehicle body side with the axis 70 of the filter 12 substantially orthogonal to the vertical direction. It may be a so-called vertically mounted oil catch tank in which the tank body is fixed to the vehicle body side in a posture along the vertical direction.

  The oil catch tank of the present invention is widely applicable to vehicles equipped with an air dryer.

DESCRIPTION OF SYMBOLS 1 Air compressor 2 Air dryer 5 Connection pipe 6 Body frame 7 Bracket 10 Oil catch tank 11 Tank main body 12 Filter 13 Partition plate 14 Inflow part 15 Exhaust part 16 Indicator part 17 Drain discharge part 18 Case body 19 Lid 22 Tank internal space 24 Tube 25 pressure relieving member 26 one side closing plate 27 other side closing plate 28 circumferential surface 29 through hole 30 filter internal space 38 filter cover 39 extension board 46 bottom of tank lower space 49 inner tank upper space 50 tank lower space 51 Gap 52 Exhaust port 53 Exhaust passage 54 Duct part 55 Outlet 58 Mixture inflow path 70 Axis

Claims (1)

An oil catch tank of a vehicle connected to an air dryer that ejects impurities captured from pressurized air as a mixture with discharge air, and the mixture jetted from the air dryer is separated into impurities and discharge air,
It has a bottomed cylindrical case body which one side opens, and a lid which is fixed to the case body and closes the one side of the case body, and divides the space in the tank inside and fixes it on the vehicle body side The tank body to be
A filter disposed in the tank interior space, having a cylindrical body that divides the filter interior space inward by a circumferential surface portion in which a plurality of through holes are formed, and a pressure relief material accommodated in the filter interior space ,
A filter cover having a cover surface and fixed to the lid;
Provided in the filter cover, is disposed below the filter in the tank space, and the partition plate for partitioning the tank space and tank headspace and tank lower space,
An inflow portion provided in the tank main body to communicate the filter internal space with the outside of the tank main body and causing the mixture ejected by the air dryer to flow into the filter internal space;
It has an exhaust port provided in the upper part of the tank body , formed in the case body and opened , and communicating the upper space in the tank with the outside of the tank body,
The mixture flowing into the space in the filter from the inflow part is dampened in flow momentum by the pressure reducing material, separated into discharge air and impurities, and flows out from the through hole.
Impurities separated from the mixture are stored at the bottom of the lower space in the tank,
The discharge air separated from the mixture is discharged from the exhaust unit to the outside,
The cover surface portion of the filter cover faces the circumferential surface portion of the tubular body on one surface, and faces the exhaust port on the other surface opposite to the one surface,
The partition plate does not have a hole for communicating the upper space in the tank and the lower space in the tank, and connects the upper space in the tank and the lower space in the tank between the inner surface of the tank body and the inner space. An oil catch tank for a vehicle characterized by forming a gap.

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