Oil-gas separation device for air inlet pipe of air compressor

Abstract

The utility model relates to the technical field of oil-gas separation equipment, in particular to an air compressor air inlet pipe oil-gas separation device which comprises an outer shell, a one-way valve and an air inlet are sequentially arranged on the surface of the top end of the outer shell, an air outlet is formed in the surface of the bottom end of the outer shell, and a closed cavity is formed in the outer shell. A plurality of steel angles are arranged on the surface of the top end of the partition plate, the phenomenon of oil vomiting after the air compressor is suddenly stopped and powered off can be effectively solved while positive long-term operation of the air compressor is not affected, lubricating oil brought out of high-pressure mixed gas from a screw type compression mechanism and lubricating oil in the mixed gas can be recycled, and waste of the lubricating oil is avoided; lubricating oil and oil-gas mixed gas can be effectively prevented from entering the air inlet air filter element through the air inlet butterfly valve, and unnecessary waste of the air filter element is avoided. The air compressor can stably play a role in a dust and vibration working environment for a long time, so that the whole structure is simple, the maintenance is convenient, and the maintenance cost of the air compressor is prevented from being increased.

Description

TECHNICAL FIELD

[0001] The utility model relates to oil gas separation equipment technical field especially relates to an air compressor air inlet pipe oil gas separation device. BACKGROUND

[0002] Through the retrieval existing announcement number CN221442779U's Chinese patent document, disclosed a kind of air compressor oil gas separation device, including support leg, the top of the support leg is fixedly installed with separation box body, the top of the separation box body is fixedly installed with dismounting mechanism, the bottom of the separation box body is fixedly installed with feed assembly.The air compressor oil gas separation device, by setting dismounting mechanism, when needing to take out fixed half plate to clean filter screen during use, pull handle at this time, make telescopic rod one drive chuck to left telescopic, and lift up box cover, at this time, rotate screw groove pipe, so that screw groove pipe is not in contact with threaded half pipe, when threaded groove pipe leaves threaded half pipe, just, fixed half plate is lifted up, two fixed half plates can be taken out, filter screen can be cleaned at this time, realize the function of installation and dismounting separation device's filter screen, and improve the efficiency of installation and dismounting.

[0003] WK-35 mining excavator is a kind of large-scale mine mechanical equipment, and the air compressor in its gas circuit system plays a vital role as air source.When the air compressor in normal load operation suddenly enters the emergency stop state, the motor loses power and stops rotating, and the screw rod compression mechanism loses power and does not act. At this time, the high-pressure oil-gas mixture in the air compressor oil-gas bucket will be relieved to the inlet and outlet, and since the compression mechanism loses its function, the exhaust pressure of the unit will be lower than the set pressure of the minimum pressure valve of the air compressor, and the pressure valve will cut off the exhaust gas circuit. At this time, the high pressure in the oil-gas bucket can only be relieved to the inlet, and the high-pressure oil-gas mixture will pass through the screw rod compression mechanism and drive part of the lubricating oil to the air inlet of the air compressor. During the operation of WK-35 mining excavator, frequent failures and power outages often occur, causing the air compressor to enter the emergency stop state. At this time, since the air compressor is in load operation, the system pressure is high, and the pressure in the main machine will be released to the air inlet, and the oil in the main machine will also be brought out with the gas pressure to form the phenomenon of oil vomiting. Oil vomiting not only causes waste of lubricating oil, but also causes the lubricating oil to flow into the air filter of the air compressor inlet system, causing the air filter to lose its function and affecting the normal operation of the air compressor. The defects are as follows:

[0004] 1. After emergency stop and power failure, the high pressure in the unit is relieved through the air compressor air prevention valve, which cannot complete the relief process in a very short time, and the high-pressure mixture will still flow to the screw rod compression mechanism. Once the piston inlet valve at the air inlet fails, oil vomiting will eventually occur.

[0005] 2. The structure of butterfly valve is limited, the sealing property is generally poor, and the air inlet butterfly valve installed at the outlet of air inlet filter element is easy to be worn after long time high pressure, and cannot complete the complete blocking effect of mixed gas under pressure.

[0006] 3. The piston type air inlet valve needs to replace the piston regularly, and the replacement cycle is shorter due to the more severe working environment of the air compressor used by WK-35, which greatly increases the operation cost of the user and the after-sales service cost of the air compressor manufacturer.

[0007] 4. The effect of the heavy hammer type check valve is obvious, but the use requirement and maintenance cost are high, once the impurities in the gas are inserted into the sealing surface, the check effect will be lost, and the heavy hammer type check valve is easy to be worn after long time operation, which causes the valve plate to be unable to return to the correct position and also loses the check effect. The utility model discloses the technical problems to be solved

[0008] The utility model discloses the technical problems to be solved

[0009] In order to solve the above technical problems, the utility model provides the following technical scheme:

[0010] The utility model discloses an air compressor air inlet pipe oil gas separation device, including external shell, the external shell top end surface is sequentially provided with check valve and air inlet, the external shell bottom end surface is provided with the air outlet, the internal closed cavity of external shell is provided with, the inside of closed cavity is vertically arranged and is sequentially provided with a plurality of partition board, the partition board top end surface is provided with a plurality of angle steel, and the one side of angle steel is provided with air passage.

[0011] Further description of the above technical scheme:

[0012] The external shell is fixedly connected with the check valve, the air inlet and the air outlet, and the external shell is a cylindrical body, the air inlet and the air outlet are provided with flanges at the end portions, and the external air compressor device is connected and fixed.

[0013] Further description of the above technical scheme:

[0014] The external shell and the plurality of partition plates are fixedly connected, and the plurality of partition plates cooperate with the angle steel and the air channel to form a labyrinth partition.

[0015] As a further description of the above technical solutions:

[0016] The partition plate and the angle steel are inlaid connection, the angle steel is in L-shaped arrangement, the partition plate and the air channel are inlaid connection, and the air channel top end and bottom end are provided with corresponding inclined surface pipe fittings.

[0017] The utility model has the advantages of the following beneficial effects:

[0018] In the utility model, the phenomenon of oil vomiting after the air compressor is suddenly stopped and powered off can be effectively solved without affecting the normal operation of the air compressor, and the lubricating oil brought out of the screw compressor mechanism by high-pressure mixed gas and the lubricating oil in the mixed gas can be recycled, so that the waste of lubricating oil is avoided; the lubricating oil and oil-gas mixed gas can be effectively prevented from entering the air inlet air filter element through the air inlet butterfly valve, so that unnecessary waste of the air filter element is avoided; the structure is simple and the maintenance is convenient, and the maintenance cost of the air compressor is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings are included to provide a further understanding of the utility model and constitute a part of the specification, and are used to explain the utility model together with embodiments of the utility model, and do not constitute a limitation on the utility model. In the drawings:

[0020] Figure 1 It is the overall structure schematic diagram of the utility model;

[0021] Figure 2 It is the overall structure schematic diagram of the utility model;

[0022] Figure 3 It is the overall internal structure schematic diagram of the utility model;

[0023] Figure 4 It is the overall structure overhead schematic diagram of the utility model;

[0024] Figure 5 It is the partition plate structure schematic diagram of the utility model;

[0025] In the drawing: 1, external shell; 2, check valve; 3, air inlet; 4, air outlet; 5, closed cavity; 6, partition plate; 7, angle steel; 8, air channel. DETAILED DESCRIPTION

[0026] The preferred embodiments of the utility model are described below in combination with the drawings, and it should be understood that the preferred embodiments described herein are only used for illustrating and explaining the utility model, and are not used for limiting the utility model.

[0027] The same reference numerals in the drawings refer to the same components.

[0028] Embodiment 1

[0029] With reference to Figures 1-5 The utility model provides an embodiment: an air compressor intake pipe oil gas separation device, including external casing 1, external casing 1 top end surface is sequentially provided with nonreturn valve 2 and air inlet 3, external casing 1 bottom end surface is provided with air outlet 4, external casing 1 inside is provided with airtight cavity 5, a plurality of partition plates 6 are arranged in turn in a vertical manner in the inside of airtight cavity 5, a plurality of angle steels 7 are arranged on the top end surface of partition plate 6, and air passage 8 is arranged on one side of angle steel 7.

[0030] External casing 1 and nonreturn valve 2 and air inlet 3 and air outlet 4 are all fixed connection, and external casing 1 is cylindrical setting, and the end of air inlet 3 and air outlet 4 is all provided with flange and is connected fixed with external air compressor device.

[0031] External casing 1 and a plurality of partition plates 6 are fixed connection, and the labyrinth is formed by a plurality of partition plates 6 cooperation angle steel 7 and air passage 8, and the partition plate 6 is disc setting.

[0032] Partition plate 6 and angle steel 7 are inlayed connection, and the angle steel 7 is L type setting, and partition plate 6 and air passage 8 are inlayed connection, and the top end and bottom end of air passage 8 are all provided with corresponding inclined surface pipe fittings.

[0033] Specifically, its structure is formed by an external shell 1, a one-way valve 2, an air inlet 3, an air outlet 4, a sealed cavity 5, a partition plate 6, an angle steel 7 and an air passage 8 to form an air compressor air inlet pipe oil-gas separation device. The air compressor air inlet pipe oil-gas separation device is provided with a labyrinth oil-gas separation device at the air compressor air inlet, effectively solving the oil vomiting problem after the air compressor is suddenly stopped, recovering the lubricating oil of the air compressor and avoiding the waste of the lubricating oil. At the same time, the device also avoids the lubricating oil from flowing into the air filter element of the air compressor inlet system, causing the air filter element to lose its function and ensuring the normal operation of the air compressor. The air inlet 3 and the air outlet 4 are respectively connected with the air inlet of the screw compression device of the air compressor and the air inlet valve installed at the outlet of the air filter device of the air compressor through the flanges of the air inlet 3 and the air outlet 4. The external shell 1 is provided as a cylinder, the middle part is provided as a hollow structure, the labyrinth is formed by the partition plate 6, the angle steel 7 and the air passage 8, and five labyrinths are arranged in the sealed cavity 5. The labyrinth is used to increase the flow path of the oil-gas mixture and reduce the content of the oil mist in the oil-gas mixture. The one-way valve 2 is arranged at the top of the sealed cavity 5 of the external shell 1 and is used to discharge the gas with pressure after the oil-gas separation, preventing the gas from entering the air compressor inlet filter element through the air compressor inlet butterfly valve. The air compressor air inlet pipe oil-gas separation device is provided with a labyrinth oil-gas separation device between the air compressor inlet filter element and the screw compression mechanism of the air compressor, effectively solving the oil vomiting problem after the air compressor is suddenly stopped, recovering the lubricating oil of the air compressor, avoiding the waste of the lubricating oil, avoiding the lubricating oil from flowing into the air filter element of the air compressor inlet system, causing the air filter element to be scrapped and ensuring the normal operation of the air compressor. The overall device has a simple structure and can even be self-made. Except for the one-way valve 2, there is no relatively precise movable part, so the maintenance cost is very low.

[0034] Working principle: when the air compressor in the process of normal work suddenly into the emergency stop state, the air compressor oil gas bucket of oil gas mixture through the screw compression device and drive part of the screw compression device in part of the liquid lubricating oil from the gas outlet 4 into the closed cavity 5, due to the closed cavity 5 in the gas flow path cross section is greater than the air compressor screw compression device in the gas flow path cross section, this leads to the closed cavity 5 into the flow rate of oil gas mixture with pressure is reduced, this time by the oil gas mixture with pressure driven part of the liquid lubricating oil due to the driving force is reduced and under the action of gravity in the closed cavity 5. The remaining part of the lubricating oil and oil gas mixture with pressure in the gas channel 8 composed of closed cavity 5 and labyrinth spacing continue to move, through the labyrinth separation barrier and separation, the remaining part of the lubricating oil and oil mist gradually gathered into oil droplets, deposited on the pipe wall, and gathered in the closed cavity 5. After separation of the gas with pressure to the device of the upper part, due to the air compressor emergency stop power off, the air compressor inlet butterfly valve is in the closed state, and the check valve 2 is in the open state under the action of the internal pressure of the device, the separated gas with pressure flows out to the outside of the air compressor through the check valve 2, avoiding the mixture into the air compressor inlet filter element, while the pressure received by the inlet butterfly valve is greatly reduced, reducing the wear of the inlet butterfly valve. With the discharge of the gas with pressure, the pressure of the oil gas bucket in the air compressor tends to be balanced with the atmospheric pressure, the check valve 2 at the upper end of the device is closed, which does not affect the normal air intake of the air compressor, and the lubricating oil gathered in the closed cavity 5 of the device will gradually return to the screw compression mechanism of the air compressor under the action of gravity, avoiding the waste of lubricating oil. When the air compressor resumes normal operation, the gas filtered by the air compressor inlet filter element flows along the gas channel in the WK-35 electric shovel air compressor anti oil device, which will also drive the lubricating oil accumulated in the device to flow back to the screw compression mechanism, avoiding the accumulation of a large amount of lubricating oil in the device. When the oil gas mixture of the air compressor main machine flows out to the inlet 3, the mixture first enters the labyrinth oil gas separation device. Because the gas flow path in the closed cavity 5 of the device is much larger than the air inlet 3 of the air compressor, the pressure of the oil gas mixture flowing into the oil gas separation device is greatly reduced. At the same time, the oil mist with high flow rate in the oil gas mixer enters the labyrinth separator, which will hit the labyrinth baffle and gradually accumulate into heavy oil droplets. Under the action of gravity, the oil droplets are deposited on the pipe wall and gradually accumulate in the separation gas closed cavity 5. Finally, the separated gas will flow out of the air compressor from the check valve 2 at the upper end of the labyrinth oil gas separation device. When the oil gas mixture flowing into the inlet 3 of the air compressor after emergency stop is discharged, the lubricating oil accumulated in the closed cavity 5 of the labyrinth oil gas separation device will gradually return to the air compressor unit.

[0035] The use flow is as follows: the two ends of the closed cavity 5 are respectively provided with the gas inlet 3 and the gas outlet 4 connecting flanges; the gas inlet and the gas outlet are used for connecting with the air compressor; the labyrinth partition in the closed cavity 5 is used for increasing the flow path of the oil-gas mixture and reducing the pressure thereof; the one-way valve 2 is arranged at the top of the closed cavity 5 and is used for preventing the oil-gas mixture from flowing back; when the air compressor works normally, the oil-gas mixture enters the closed cavity 5 from the gas inlet 2, is blocked and separated by the labyrinth partition in the cavity, the oil mist gradually gathers into oil droplets, is deposited on the pipe wall and is gathered in the separation gas closed cavity; the separated gas flows out from the one-way valve 2 to the outside of the air compressor and enters the air filter element for filtration; when the air compressor is suddenly stopped, the oil-gas mixture flowing into the gas inlet 3 enters the closed cavity 5, the pressure gradually reduces under the action of the labyrinth partition in the cavity, the oil mist gradually condenses into oil droplets, is deposited on the pipe wall and is gathered in the separation gas closed cavity; after the oil-gas mixture flowing into the gas inlet 3 is discharged, the lubricating oil gathered in the separation gas closed cavity gradually flows back to the air compressor set, so that the waste of the lubricating oil is avoided.

[0036] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the present application has been described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can be modified to the technical solutions recorded in the foregoing embodiments, or equivalent replacement for some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An oil-gas separator for an air compressor intake pipe, comprising an outer housing (1), characterized in that, The top surface of the outer housing (1) is provided with a one-way valve (2) and an air inlet (3) in sequence. The bottom surface of the outer housing (1) is provided with an air outlet (4). The interior of the outer housing (1) is provided with a sealed cavity (5). Multiple partition plates (6) are arranged vertically in sequence on the inner side of the sealed cavity (5). Multiple angle steels (7) are provided on the top surface of the partition plates (6). An air passage (8) is provided on one side of the angle steels (7).

2. The air compressor inlet pipe oil-gas separator according to claim 1, characterized in that, The outer housing (1) is fixedly connected to the one-way valve (2), the air inlet (3), and the air outlet (4). The outer housing (1) is cylindrical, and the ends of its air inlet (3) and air outlet (4) are provided with flanges to be fixedly connected to the external air compressor device.

3. The air compressor inlet pipe oil-gas separator according to claim 1, characterized in that, The outer shell (1) and multiple partition plates (6) are fixedly connected. The multiple partition plates (6) together with the angle steel (7) and the air duct (8) form a labyrinth partition. The partition plates (6) are set as discs.

4. The air compressor inlet pipe oil-gas separator according to claim 1, characterized in that, The partition plate (6) and the angle steel (7) are inlaid together, and the angle steel (7) is L-shaped. The partition plate (6) and the air passage (8) are inlaid together, and the top and bottom of the air passage (8) are provided with corresponding inclined pipe fittings.

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