Oil-gas separator of screw air compressor

Abstract

The utility model belongs to the technical field of oil-gas separators, and provides an oil-gas separator of a screw air compressor, which comprises a base shell and a filter cartridge, an air inlet pipe is installed at the left end of the base shell, an oil drain pump is installed at the right end of the base shell, and an oil drain pipe is installed on the right side of the oil drain pump. A filter cartridge is mounted at the top of the base shell, a butt joint seat is arranged at the bottom of the filter cartridge, a mounting frame is arranged at the bottom of the butt joint seat, and the mounting frame is welded to the top of the base shell; an inner core and an air filter screen are arranged in an inner cavity of the filter cartridge; according to the scheme, the novel oil-gas separator can filter air and greasy dirt, pressurized conveying can be achieved, and the flow speed can be increased; the threaded channel spirally ascends, the waste gas continuously makes contact with the air filter screen, the contact area of the waste gas and the air filter screen is larger, and the waste gas filtering efficiency is better; the filtered engine oil is collected by collection and backflow and is uniformly discharged and utilized, so that reasonable secondary utilization is facilitated according to the quality of the filtered engine oil.

Description

Technical Field

[0001] The utility model relates to the technical field of oil-gas separators, in particular to an oil-gas separator for a screw air compressor. Background Art

[0002] Screw air compressor is a kind of air compressor, which adopts pre-packaged configuration and has the advantages of high performance, high efficiency, maintenance-free and high reliability. Through the design of screw air compressor, it can provide stable gas pressure and is widely used in industrial production to provide power for various process flows. The application of screw air compressor is not limited to air power, but also includes gas transportation, refrigeration and gas separation, gas synthesis and polymerization and other fields.

[0003] When the screw air compressor is working, some exhaust gas will be generated. This exhaust gas is a mixture of engine oil and steam. If it is discharged directly, it will cause environmental pollution. Therefore, the exhaust gas needs to be filtered before being discharged. The existing screw air compressor also has some defects. The traditional oil-gas separator air inlet pipe has a smooth inner wall and no pressurization function, which makes the exhaust gas flow slower, the exhaust gas deposition more serious, and the waiting time for filtration longer. At the same time, the traditional separator corridor-type separation pipeline has poor efficiency, and a large amount of exhaust gas is diffused without filtration, causing more pollution. For this reason, we proposed a screw air compressor oil-gas separator. Utility Model Content

[0004] The utility model aims to provide an oil-gas separator for a screw air compressor to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an oil-gas separator for a screw air compressor, comprising a base shell and a filter cartridge;

[0006] An air inlet pipe is installed at the left end of the base shell, an oil drain pump is installed at the right end of the base shell, and an oil drain pipe is installed on the right side of the oil drain pump;

[0007] A filter cartridge is installed on the top of the base shell, a docking seat is provided at the bottom of the filter cartridge, a mounting frame is provided at the bottom of the docking seat, and the mounting frame is welded to the top of the base shell;

[0008] An inner core and an air filter are arranged in the inner cavity of the filter cartridge, the bottom of the inner core is fixed to the middle of the docking seat, an air guide pipe is also arranged in the middle of the docking seat, and air guide ports are symmetrically opened at the lower part of the outer side surface of the inner core, and the number of air guide ports is 2-4 groups, and the air guide pipe is located at the air guide port;

[0009] An air filter is inserted into the inner cavity of the filter cartridge, and the air filter is arranged on the outside of the inner core. The outer wall of the inner core is provided with a threaded channel extending upward, and the threaded channel and the inner wall of the air filter are close to each other;

[0010] An air inlet passage and an oil discharge passage are respectively provided in the inner cavity of the docking seat; an exhaust pipe is provided on the upper right side of the filter cartridge, and the exhaust pipe is communicated with the inner cavity of the filter cartridge.

[0011] Preferably, a sealing cover is provided on the top of the air filter, a threaded ring is provided downwardly at the bottom of the sealing cover, the threaded ring is provided on the outside of the air filter, and the threaded ring is screwed downwardly to the top of the inner cavity of the filter cartridge.

[0012] Preferably, an air inlet passage is opened on the left side of the inner cavity of the base shell, and two ends of the air inlet passage are respectively connected with the air guide pipe and the air inlet pipe.

[0013] Preferably, an oil drainage passage begins at the right side of the inner cavity of the base shell, and both ends of the oil drainage passage are respectively communicated with the docking seat oil drainage pump.

[0014] Preferably, a scalding-resistant protective shell is sleeved on the outer side of the exhaust pipe, and the exhaust pipe is externally connected to an extension pipe.

[0015] Preferably, the top surface of the docking seat is recessed downward, and oil leakage ports are evenly opened around the outer side of the inner core. The inner cavity of the docking seat is funnel-shaped, and the oil leakage ports are connected with the oil drain passage through the inner cavity of the docking seat. The air inlet passage is connected by a pipeline in the inner cavity of the docking seat and is not connected with the inner cavity of the docking seat. A filter is provided in the oil leakage port.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The present invention provides a novel oil-gas separator capable of filtering air and oil pollution. Two extrusion limit rings, one larger on the left and one smaller on the right, are arranged in the inner cavity of the air intake duct. The gas is extruded and transported in the pipeline through which the exhaust gas passes, so as to achieve the purpose of pressurized transportation and increased flow rate. After the exhaust gas enters the filter cartridge, it spirally rises along the threaded channel. During this period, the exhaust gas continuously contacts the air filter. The contact surface between the exhaust gas and the air filter is larger, and the efficiency of filtering the exhaust gas is also better. The filtered engine oil is collected by converging and reflux, and uniformly transported by an oil drain pump, so as to facilitate reasonable secondary utilization according to the quality of the filtered engine oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is the front view of the utility model;

[0019] Figure 2 This is a disassembly diagram of the utility model;

[0020] Figure 3This is a schematic diagram of the threaded ring of the utility model;

[0021] Figure 4 This is a schematic diagram of the top surface of the docking seat of the utility model;

[0022] Figure 5 It is a planar cross-sectional view of the docking seat and the base shell of the utility model.

[0023] In the figure: 1 base shell; 2 air intake pipe; 3 oil discharge pump; 4 oil discharge pipe; 5 filter cartridge; 6 exhaust pipe; 7 air filter; 8 inner core; 9 threaded channel; 10 docking seat; 11 air guide pipe; 12 oil leakage port; 13 air intake passage; 14 oil discharge passage; 15 threaded ring; 16 air guide port. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0026] Example:

[0027] See also Figure 1-5 , the utility model provides a technical solution of an oil-gas separator for a screw air compressor: comprising a base shell 1 and a filter cartridge 5;

[0028] An air inlet pipe 2 is installed at the left end of the base shell 1, an oil drain pump 3 is installed at the right end of the base shell 1, and an oil drain pipe 4 is installed on the right side of the oil drain pump 3;

[0029] A filter cartridge 5 is installed on the top of the base shell 1, a docking seat 10 is provided at the bottom of the filter cartridge 5, a mounting frame is provided at the bottom of the docking seat 10, and the mounting frame is welded to the top of the base shell 1;

[0030] An inner core 8 and an air filter 7 are arranged in the inner cavity of the filter cartridge 5. The bottom of the inner core 8 is fixed to the middle of the docking seat 10. An air guide tube 11 is also arranged in the middle of the docking seat 10. Air guide ports 16 are symmetrically opened at the lower part of the outer side surface of the inner core 8. The number of the air guide ports 16 is 2-4 groups. The air guide tube 11 is located at the air guide ports 16.

[0031] An air filter 7 is inserted into the inner cavity of the filter cartridge 5. The air filter 7 is arranged outside the inner core 8. The outer wall of the inner core 8 is provided with a threaded channel 9 extending upward. The threaded channel 9 and the inner wall of the air filter 7 are close to each other.

[0032] A cover is provided at the top of the air filter 7, and a threaded ring 15 is provided downwardly at the bottom of the cover. The threaded ring 15 is provided on the outside of the air filter 7, and the threaded ring 15 is screwed downwardly to the top of the inner cavity of the filter cartridge 5;

[0033] An exhaust pipe 6 is provided on the upper right side of the filter cartridge 5, and the exhaust pipe 6 is connected to the inner cavity of the filter cartridge 7;

[0034] An air inlet 13 is provided on the left side of the inner cavity of the base shell 1, and the two ends of the air inlet 13 are respectively connected to the air guide pipe 11 and the air inlet pipe 2;

[0035] An oil drain passage 14 is provided at the right side of the inner cavity of the base shell 1, and both ends of the oil drain passage 14 are respectively connected to the oil drain pump 3 of the docking seat 10;

[0036] The top surface of the docking seat 10 is concave downward, and oil leakage openings 12 are evenly opened around the outer side of the inner core 8. The inner cavity of the docking seat 10 is funnel-shaped, and the oil leakage opening 12 is connected to the oil drain passage 14 through the inner cavity of the docking seat 10. The air inlet passage 13 is connected by a pipeline in the inner cavity of the docking seat 10 and is not connected to the inner cavity of the docking seat 10; a filter is provided in the oil leakage opening 12; the outer side of the exhaust pipe 6 is sleeved with a scalding-resistant protective shell, and the exhaust pipe 6 is externally connected to an extension pipe;

[0037] This solution provides a new oil-gas separator that can filter air and oil. Exhaust gas is a mixture of a large amount of oil and steam. Direct discharge will cause more pollution. The oil in the exhaust gas can be collected and reused. For example, high-quality oil can be recirculated through the pipeline and used again, and low-quality oil can be collected and used as lubricating oil.

[0038] Specifically, an inner core 8 and an air filter 7 are arranged in the filter cartridge 5, and the exhaust gas generated in the screw air compressor is connected to the air inlet pipe 2 through a pipeline. When the screw air compressor is output, the exhaust gas is transported by a pressurized pipeline, and the exhaust gas is injected into the filter cartridge 5 along the air inlet pipe 2, the air inlet duct 13, the air guide pipe 11 and the air guide port 16. When the exhaust gas enters the air inlet duct 13, the pipe diameter through which the exhaust gas can pass is further reduced, so that the exhaust gas is compressed and transported, and therefore, when entering the filter cartridge 5, it is in a pressurized gushing state; two extrusion limit rings with a larger left and a smaller right are arranged in the inner cavity of the air inlet duct 13, and the gas is extruded and transported in the pipeline through which the exhaust gas passes, so as to achieve the purpose of pressurized transportation;

[0039] After the exhaust gas enters the filter cartridge 5, it spirally rises along the threaded channel 9. During this period, the exhaust gas keeps contacting with the air filter 7, and the gas penetrates out through the air filter 7. A 3-5mm interval cavity is also provided between the air filter 7 and the inner wall of the filter cartridge 5. The filtered air penetrates into the interval cavity, and the exhaust pipe 6 is connected with the interval cavity. The air is discharged along the exhaust pipe 6, and the grease particles blocked by the air filter 7 are gathered downward under the action of gravity and accumulated on the top surface of the docking seat 10. The top surface of the docking seat 10 is concave downward, which can collect the fallen grease particles and gather them into engine oil. The top surface of the docking seat 10 is provided with uniform oil leakage ports 12. The collected engine oil flows into the oil drain channel 14 through the oil leakage ports 12. After a certain time interval, the oil drain pump 3 is turned on to pump out the engine oil accumulated in the oil drain channel 14.

[0040] By connecting the oil drain pipe 4 to an external pipeline, the collected oil can be recovered or reconnected to the machine for use, which is very convenient; the air filter 7 is screwed and fixed to the filter cartridge 5 through the threaded ring on the top, which makes it more convenient to take when replacement and maintenance are needed.

[0041] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model, and any figure marks in the claims should not be regarded as limiting the claims involved.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A screw air compressor oil-gas separator, comprising a base shell (1) and a filter cartridge (5), characterized in that: An air intake pipe (2) is installed at the left end of the base shell (1), an oil drain pump (3) is installed at the right end of the base shell (1), and an oil drain pipe (4) is installed on the right side of the oil drain pump (3); A filter cartridge (5) is installed on the top of the base shell (1), a docking seat (10) is provided at the bottom of the filter cartridge (5), a mounting frame is provided at the bottom of the docking seat (10), and the mounting frame is welded to the top of the base shell (1); An inner core (8) and an air filter (7) are arranged in the inner cavity of the filter cartridge (5); the bottom of the inner core (8) is fixed to the middle of the docking seat (10); an air guide pipe (11) is also arranged in the middle of the docking seat (10); air guide ports (16) are symmetrically opened at the lower part of the outer side surface of the inner core (8); and the number of the air guide ports (16) is 2-4 groups; the air guide pipe (11) is located at the air guide port (16); An air filter (7) is inserted into the inner cavity of the filter cartridge (5), the air filter (7) is arranged on the outside of the inner core (8), the outer wall of the inner core (8) is provided with a threaded channel (9) extending upward, and the threaded channel (9) and the inner wall of the air filter (7) are close to each other; An air inlet passage (13) and an oil discharge passage (14) are respectively provided in the inner cavity of the docking seat (10); an exhaust pipe (6) is provided at the upper right portion of the filter cartridge (5), and the exhaust pipe (6) is communicated with the inner cavity of the filter cartridge (5).

2. The oil-gas separator for a screw air compressor according to claim 1, characterized in that: A sealing cover is arranged at the top of the air filter (7), and a threaded ring (15) is arranged downward at the bottom of the sealing cover. The threaded ring (15) is arranged on the outside of the air filter (7), and the threaded ring (15) is screwed downward to the top of the inner cavity of the filter cartridge (5).

3. The oil-gas separator for a screw air compressor according to claim 1, characterized in that: An air inlet passage (13) is provided on the left side of the inner cavity of the base shell (1), and two ends of the air inlet passage (13) are respectively connected to the air guide pipe (11) and the air inlet pipe (2).

4. The oil-gas separator for a screw air compressor according to claim 1, characterized in that: An oil discharge passage (14) is provided at the right side of the inner cavity of the base shell (1), and both ends of the oil discharge passage (14) are respectively connected to the oil discharge pump (3) of the docking seat (10).

5. The oil-gas separator for a screw air compressor according to claim 1, characterized in that: The outer side of the exhaust pipe (6) is sleeved with a scalding-resistant protective shell, and the exhaust pipe (6) is externally connected to an extension pipe.

6. The oil-gas separator for a screw air compressor according to claim 1, characterized in that: The top surface of the docking seat (10) is concave downward, and oil leakage openings (12) are evenly opened around the outer side of the inner core (8); the inner cavity of the docking seat (10) is funnel-shaped, and the oil leakage opening (12) is connected to the oil drain passage (14) through the inner cavity of the docking seat (10); the air inlet passage (13) is connected to the inner cavity of the docking seat (10) by a pipeline and is not connected to the inner cavity of the docking seat (10); and a filter is arranged in the oil leakage opening (12).

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