Oil mist removing structure of gearbox

Abstract

The utility model relates to the technical field of transmission mechanisms, in particular to a gear box oil mist removing structure which comprises an installation base arranged on a gear box, an air inlet hole, a ventilation cover, a radiator arranged on the installation base and provided with ventilation holes in the surface, and an inner cavity communicated with the air inlet hole. The ventilation cap seat is connected with the top end of the first condensation chamber and is matched with the air purifier, the oil return seat is a hollow cylinder which is coaxially arranged in the ventilation cover, the bottom end of the oil return seat is communicated with an air inlet hole, the top end of the oil return seat extends to the top of the ventilation cover to form an oil-gas channel, and the outer wall of the oil return seat and the inner wall of the ventilation cover form a second condensation chamber; an oil return hole is formed in the bottom. According to the utility model, the flowing path and residence time of oil and gas are prolonged, so that the heat dissipation and condensation effects of the oil and gas are improved, condensed oil flows back to the gear box, the oil mist removal effect is improved, the oil and gas discharge amount is greatly reduced, and the atmospheric pollution is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to transmission mechanism technical field especially relates to a gear box oil mist structure. BACKGROUND

[0002] The oil mist in the oil gas mixture gas generated by the gear box contains submicron lubricating oil particles, metal swarf and volatile organic compounds. By arranging the oil mist removal mechanism between the gear box and the air purifier, the oiliness substances can be effectively prevented from blocking the filter material interstice, and the combination of the oiliness substances with PM2.5 and other particles in the air purifier to form composite pollutants which are more difficult to clean can be avoided. However, the conventional air filter has poor oil mist removal effect, and it is necessary to separately design an oil mist removal device on the high-speed gear box, which has a complex structure and is difficult to assemble.

[0003] To solve the above technical problems, the existing patent application No. 202020811997.X discloses an oil mist removal structure and a gear transmission device. The oil gas in the gear box first enters the inside of the oil return device, and the high-temperature and high-pressure oil gas is condensed once by the oil return device, so that the oil gas enters between the oil return device and the radiator, and the oil gas is subjected to secondary condensation, thereby improving the oil gas condensation effect, reducing the content of oil gas in the discharged mixed gas, and reducing atmospheric pollution. In the above prior art, the flow path and the time of direct heat exchange of the oil gas in the inside thereof are relatively short, and the amount of oil gas that can be condensed is limited, and the elimination effect of the oil mist is relatively poor. UTILITY MODEL CONTENTS

[0004] Therefore, the utility model aims at providing a gear box oil mist removal structure to solve the problem that the flow path and the time of direct heat exchange of the oil gas in the inside thereof are relatively short, and the amount of oil gas that can be condensed is limited, and the elimination effect of the oil mist is relatively poor.

[0005] To achieve the above purpose, the utility model provides a gear box oil mist removal structure, which comprises a mounting seat arranged on a gear box.

[0006] An air inlet hole is arranged on the mounting seat and communicates with the inside of the gear box.

[0007] A gas permeable cover is arranged on the mounting seat, a gas permeable hole is arranged on the surface of the gas permeable cover, and an inner cavity of the gas permeable cover communicates with the air inlet hole.

[0008] A radiator is arranged outside the gas permeable cover and surrounds a first condensation cavity with the outer wall of the gas permeable cover.

[0009] A gas permeable cap seat is connected to the top end of the first condensation cavity and is adapted to an air purifier.

[0010] Further comprising:

[0011] The oil return seat is a hollow cylinder coaxially arranged in the air breather cover, the bottom end is connected with the air inlet hole, the top end extends to the top of the air breather cover to form an oil gas passage, the outer wall of the oil return seat forms a second condensation chamber with the inner wall of the air breather cover, and the bottom end is provided with an oil return hole.

[0012] The flow guide hole is arranged on the air breather cover and communicates the first condensation chamber and the second condensation chamber, and the double-condensed oil liquid flows back to the gear box through the flow guide hole, the oil return hole and the air inlet hole in sequence.

[0013] Preferably, the outer surface of the heat sink is axially provided with a plurality of heat dissipation fins, and the bottom end of the inner wall of the heat sink is screwed on the top end of the mounting seat.

[0014] Preferably, the oil mist removing structure further comprises a sealing washer arranged between the top of the heat sink and the air breather cap seat, and the sealing washer is used to enhance the sealing degree between the top of the heat sink and the air breather cap seat.

[0015] Preferably, the air inlet hole comprises a wide-spacing hole arranged at the top of the mounting seat and a narrow-spacing hole communicating the bottom of the wide-spacing hole and the bottom of the mounting seat, and a raised step is fixedly connected between the narrow-spacing hole and the wide-spacing hole.

[0016] Preferably, the bottom end of the outer wall of the air breather cover is screwed in the wide-spacing hole, and the bottom end of the outer wall of the oil return seat is screwed in the narrow-spacing hole.

[0017] Preferably, the flow guide hole horizontally communicates between the bottom end of the inside of the first condensation chamber and the inside of the second condensation chamber, and the height of the flow guide hole is less than the height of the air breather hole.

[0018] Preferably, the height of one end of the air breather hole near the second condensation chamber is greater than the height of the other end, and the plurality of air breather holes are located between the flow guide hole and the midpoint of the air breather cover axis.

[0019] Preferably, the top end of the inside of the oil return seat is a conical arc surface, and the inner diameter of the conical arc surface gradually increases from inside to outside.

[0020] The utility model discloses the beneficial effects of:

[0021] The utility model discloses a first condensation chamber and the second condensation chamber are formed between the inner wall of radiator and the outer wall of air -permeable cover and the inner wall of air -permeable cover and the outer wall of oil return seat, oil gas enters the second condensation chamber inside from the oil gas passage inside the oil return seat from below to top, then from the top of second condensation chamber inside downward flow and from the evenly distributed air -permeable hole on air -permemeable cover relatively evenly enter the first condensation chamber, again from the second condensation chamber by the air -permeable cap seat from below to top and enter the air filter, in this process, make that oil gas emission path meanders, prolong oil gas flow path and the retention time, thereby improve the heat dissipation condensation effect of oil gas, and make the condensed oil return gear box, improve the oil mist removal effect, greatly reduce oil gas emission and reduce air pollution. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme in the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0023] Figure 1 For the three-dimensional schematic diagram of the utility model Figure One ;

[0024] Figure 2 For the three-dimensional schematic diagram of the utility model Figure Two ;

[0025] Figure 3 For the three-dimensional schematic diagram of the utility model Figure Three ;

[0026] Figure 4 For the three-dimensional schematic diagram of the utility model Figure Four ;

[0027] Figure 5 For the three-dimensional schematic diagram of the utility model Figure Five .

[0028] Marked as in the drawing:

[0029] 1, mounting seat, 11, air inlet hole, 111, wide distance hole, 112, pad high step, 113, narrow distance hole, 2, air -permeable cover, 21, air -permeable hole, 22, flow guide hole, 3, radiator, 31, first condensation chamber, 32, heat dissipation fin, 4, oil return seat, 41, second condensation chamber, 42, oil return hole, 5, sealing washer, 6, air -permeable cap seat. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be further explained in detail in combination with specific embodiments.

[0031] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the utility model should be understood as the usual meaning by those skilled in the art to which the utility model belongs. The "first", "second" and similar words used in the utility model do not represent any order, quantity or importance, but are only used to distinguish different components. "Include" or "contain" and similar words mean that the elements or objects before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connection, but can include electrical connection, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to represent the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0032] As shown in Figures 1 to 5 A gear box oil mist removal structure, comprising a mounting seat 1 arranged on the gear box.

[0033] An air inlet hole 11 is arranged on the mounting seat 1 and communicates with the inside of the gear box, so as to discharge the high-pressure and high-temperature oil-gas mixture in the gear box.

[0034] A gas permeable cover 2 is arranged on the mounting seat 1, and a gas permeable hole 21 is formed on the surface of the gas permeable cover 2, and the inner cavity communicates with the air inlet hole 11. The air inlet hole 11 introduces the oil-gas mixture in the gear box into the inside of the gas permeable cover 2.

[0035] A radiator 3 is arranged outside the gas permeable cover 2, and a first condensation chamber 31 is formed between the outer wall of the gas permeable cover 2 and the radiator 3. The oil-gas mixture enters the inside of the first condensation chamber 31 through the gas permeable hole 21 from the inside of the gas permeable cover 2, so that the heat of the oil mist can be efficiently dissipated to the outside environment through the radiator 3 in the first condensation chamber 31, realizing the condensation process of the oil mist into liquid.

[0036] A gas permeable cap seat 6 is connected to the top end of the first condensation chamber 31 and is adapted to an air purifier, so that the mixed gas after the oil mist removal enters the air purifier through the gas permeable cap seat 6, facilitating the purification of the last mixed gas and making the purified gas meet the emission standard.

[0037] Further comprising:

[0038] The oil return seat 4 is a hollow cylinder coaxially arranged in the air breather cover 2, the bottom end is connected to the air inlet hole 11, and the top end extends to the top of the air breather cover 2 to form an oil-gas passage, the outer wall of the oil return seat 4 and the inner wall of the air breather cover 2 form a second condensation chamber 41, and the bottom end is provided with an oil return hole 42. The oil-gas mixture gas enters the oil return seat 4 from the air inlet hole 11 from bottom to top, and then passes through the oil-gas passage into the second condensation chamber 41 while the flow direction is unchanged. Then, the flow direction of the oil-gas mixture gas in the second condensation chamber 41 is changed by 180°, and the oil-gas mixture gas flows from top to bottom and enters the first condensation chamber 31 through the air breather hole 21. In this process, part of the heat of the oil-gas mixture gas is transferred to the mounting seat 1 from the oil return seat 4 and the air breather cover 2, and then the heat is dissipated to the outside environment through the mounting seat 1, thereby completing the first condensation of the oil-gas mixture gas. The flow direction of the oil-gas mixture gas entering the first condensation chamber 31 is changed by 180° again, and the oil-gas mixture gas flows from bottom to top. In this way, part of the remaining heat of the oil-gas mixture gas is dissipated to the outside environment through the radiator 3, thereby completing the second condensation of the oil-gas mixture gas. In the above process, the flow path length of the oil-gas mixture gas and the time length of the oil-gas mixture gas staying between the gear box and the air filter are both extended, thereby improving the effect of the two real condensations of the oil-gas mixture gas. Under the premise of ensuring the size of the radiator 3, the condensation and oil mist removal effect of the oil-gas mixture gas is improved, the oil-gas content in the exhaust gas is greatly reduced, and the pollution of the oil-gas to the atmosphere is reduced.

[0039] The flow guide hole 22 is arranged on the air breather cover 2 and communicates the first condensation chamber 31 and the second condensation chamber 41. The double-condensed oil liquid flows back to the gear box through the flow guide hole 22, the oil return hole 42 and the air inlet hole 11. The flow back of the condensed oil liquid reduces the consumption speed and consumption amount of the oil in the gear box, thereby saving the use cost.

[0040] As shown in Figures 1 to 3 , the outer surface of the radiator 3 is axially provided with a plurality of heat dissipation fins 32, and the bottom end of the inner wall of the radiator 3 is threadedly mounted on the top end of the outside of the mounting seat 1. In this way, the contact area between the radiator and the outside air can be greatly increased, the heat dissipation effect is improved, part of the heat can be transferred to the mounting seat 1, the heat dissipation is assisted through the mounting seat 1, the heat dissipation effect is further improved, thereby improving the two condensation effects of the oil-gas mixture gas and improving the oil mist removal effect.

[0041] As shown in Figures 1 to 3 , the oil mist removal structure further comprises a sealing washer 5 arranged between the top of the radiator 3 and the air breather cap seat 6. The sealing washer 5 is used to strengthen the sealing degree between the top of the radiator 3 and the air breather cap seat 6. In this way, due to the flammable characteristics of the oil-gas, the sealing degree is improved, the leakage of the high-temperature and high-pressure oil-gas between the top of the radiator 3 and the air breather cap seat 6 can be avoided, and the safety hidden danger is increased.

[0042] As shown in Figures 1 to 5As shown, the air inlet hole 11 includes a wide hole 111 arranged at the top of the mounting base 1 and a narrow hole 113 connecting the bottom of the wide hole 111 and the bottom of the mounting base 1, and the narrow hole 113 and the wide hole 111 are fixedly connected with a raised step 112.

[0043] The bottom of the outer part of the air vent cover 2 is screwed into the wide hole 111, and the bottom of the outer part of the oil return seat 4 is screwed into the narrow hole 113, so that a sufficient gap is reserved between the inner wall of the radiator 3 and the outer wall of the air vent cover 2 and a sufficient gap is reserved between the inner wall of the air vent cover 2 and the outer wall of the oil return seat 4, thereby forming a first condensation chamber 31 and a second condensation chamber 41, respectively.

[0044] As shown in Figure 2 and Figure 5 , the flow guide hole 22 horizontally connects the bottom of the inside of the first condensation chamber 31 and the inside of the second condensation chamber 41, and the height of the flow guide hole 22 is less than the height of the air vent hole 21, so that the oil liquid condensed in the first condensation chamber 31 can flow back into the second condensation chamber 41 under the action of gravity, and the oil-gas mixture can flow into the first condensation chamber 31 from the inside of the air vent hole 21 and the flow guide hole 22, thereby improving the oil-gas flow efficiency.

[0045] As shown in Figure 2 and Figure 5 , the height of one end of the air vent hole 21 near the second condensation chamber 41 is greater than the height of the other end, and the air vent holes are arranged between the midpoint of the flow guide hole 22 and the air vent cover 2 axis, so that the tortuosity of the oil-gas mixture flow path is increased, and the oil-gas mixture can flow to the bottom of the first condensation chamber 31 as much as possible, thereby prolonging the flow path of the oil-gas mixture and increasing the residence time of the oil-gas mixture during condensation, thereby improving the condensation effect.

[0046] As shown in Figure 1 , Figure 2 and Figure 4 , the top of the inside of the oil return seat 4 is a conical arc surface, and the inner diameter of the conical arc surface gradually increases from inside to outside, so that when the oil-gas mixture flows out from the top of the oil return seat 4, the cross-sectional area of the oil-gas mixture is increased, thereby slowing down the flow rate of the oil-gas mixture and assisting in improving the heat exchange effect of the oil-gas mixture.

[0047] Working principle: high temperature and high pressure oil gas mixture gas from the inside of the gear box to the mounting seat 1 inside the air inlet hole 11, and then by the oil return seat 4 in the oil gas channel and into the second condensing chamber 41, in the process, the heat of the oil gas mixture gas from the oil return seat 4 on the mounting seat 1, and then from the mounting seat 1 to the outside environment, the effect of the initial cooling oil gas mixture gas, then due to the gas cover 2 not gas top and its outside the top, so that the oil gas mixture gas from top to bottom in the second condensing chamber 41, so that the oil gas mixture gas in the part from the oil return seat 4 and the mounting seat 1 to the outside environment, at the same time, the heat of the oil gas mixture gas will also be from the gas cover 2 and the mounting seat 1 to the outside environment, complete the oil gas mixture gas in the second condensing chamber 41 condensing cooling, increase the effect of oil gas mixture gas heat dissipation condensation, and then the oil gas mixture gas from the gas cover 2 outside the bottom of the gas hole 21 and the flow guide hole 22 inside the first condensing chamber 31 bottom, and then from the first condensing chamber 31 again change the flow direction, from bottom to top to the air purifier through the gas cap seat 6, in the process, the oil gas mixture gas in the first condensing chamber 31, its remaining part of the heat from the gas cover 2 and the mounting seat 1 to the outside environment, and also from the radiator 3 and the several heat dissipation fins 32 on it to the outside environment, improve the heat dissipation effect of the oil gas mixture gas, and make the oil gas mixture gas in the first condensing chamber 31 complete the second heat dissipation condensation, further improve the condensation effect of the oil gas mixture gas, in the above process, by extending the flow path of the oil gas mixture gas and prolonging the residence time of the oil gas mixture gas between the gear box and the air filter, improve the oil gas condensation effect, reduce the amount of oil gas into the air purifier, delay the influence of oil gas on the purification effect of the air purifier, and reduce the pollution of oil gas to the atmosphere, and the oil condensed in the first condensing chamber 31 flows back into the second condensing chamber 41 through the flow guide hole 22, and combines with the oil condensed in the second condensing chamber 41 to flow back to the gear box through the oil return hole 42 and the air inlet hole 11, reducing the loss amount and loss efficiency of the oil in the gear box.

[0048] Those skilled in the art will understand that the discussion of any of the above embodiments is merely exemplary and is not intended to suggest that the scope of the present application (including claims) is limited to these examples; under the concept of the present application, the above embodiments or technical features among different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes of different aspects of the present application as described above, which are not provided in detail for the sake of brevity.

[0049] The present application is intended to cover all such alternatives, modifications, and variations that fall within the broad scope of the appended claims. Accordingly, any and all such alternations, modifications, equivalents, improvements and the like are intended to be encompassed by the present application.

Claims

1. A gear box oil mist removal structure, comprising a mounting seat (1) arranged on a gear box, characterized in that: an air inlet hole (11) is arranged on the mounting seat (1) and communicates with the inside of the gear box; an air permeable cover (2) is arranged on the mounting seat (1), the surface of the air permeable cover (2) is provided with an air permeable hole (21), and the inner cavity of the air permeable cover (2) communicates with the air inlet hole (11); a heat sink (3) is arranged outside the air permeable cover (2) and surrounds the outer wall of the air permeable cover (2) to form a first condensation cavity (31); an air permeable cap seat (6) is connected to the top end of the first condensation cavity (31) and is adapted to an air purifier; further comprising: an oil return seat (4) which is a hollow cylinder coaxially arranged in the air permeable cover (2), the bottom end of the oil return seat (4) is connected to the air inlet hole (11), the top end of the oil return seat (4) extends to the top of the air permeable cover (2) to form an oil gas passage, the outer wall of the oil return seat (4) forms a second condensation cavity (41) with the inner wall of the air permeable cover (2), and the bottom of the oil return seat (4) is provided with an oil return hole (42); and a flow guide hole (22) is arranged on the air permeable cover (2) and communicates with the first condensation cavity (31) and the second condensation cavity (41), double-condensed oil flows back to the gear box through the flow guide hole (22), the oil return hole (42) and the air inlet hole (11) in sequence. The outer surface of the heat sink (3) is axially provided with a plurality of heat dissipation fins (32), and the bottom end of the inner wall of the heat sink (3) is threadedly installed on the top end of the outside of the mounting seat (1). The oil mist removal structure further comprises a sealing washer (5) arranged between the top of the heat sink (3) and the air permeable cap seat (6), and the sealing washer (5) is used to enhance the sealing degree between the top of the heat sink (3) and the air permeable cap seat (6). The air inlet hole (11) comprises a wide-spacing hole (111) arranged on the top of the mounting seat (1) and a narrow-spacing hole (113) connecting the bottom of the wide-spacing hole (111) and the bottom of the mounting seat (1), and a raised step (112) is fixedly connected between the narrow-spacing hole (113) and the wide-spacing hole (111). The bottom end of the outside of the air permeable cover (2) is threadedly installed in the wide-spacing hole (111), and the bottom end of the outside of the oil return seat (4) is threadedly installed in the narrow-spacing hole (113). The flow guide hole (22) horizontally communicates between the bottom end of the inside of the first condensation cavity (31) and the inside of the second condensation cavity (41), and the height of the flow guide hole (22) is less than the height of the air permeable hole (21). The height of one end of the air permeable hole (21) close to the second condensation cavity (41) is greater than the height of the other end, and a plurality of air permeable holes are located between the midpoint of the axis of the flow guide hole (22) and the air permeable cover (2). The top end of the inside of the oil return seat (4) is a conical arc surface, and the inner diameter of the conical arc surface gradually increases from inside to outside.

2. The gear box oil mist removal structure according to claim 1, characterized by, ​ 3. The gear box oil mist removal structure according to claim 1, wherein ​ 4. The gear box oil mist removal structure according to claim 1, wherein ​ 5. The gear box oil mist removal structure according to claim 4, wherein ​ 6. The gear box oil mist removal structure according to claim 1, wherein ​ 7. The gear box oil mist removal structure according to claim 1, wherein ​ 8. The gear box oil mist removal structure according to claim 7, wherein ​

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