A cyclone guide type air compressor oil-gas separation device

Abstract

This utility model discloses a cyclone-guided oil-gas separation device for an air compressor, comprising an oil-gas separation mechanism connected to the exhaust port of the piston cylinder of the air compressor. A first three-way pipe is connected to the end of the oil-gas separation mechanism furthest from the exhaust port, and one end of the first three-way pipe is connected to a lubricating fluid storage chamber inside the piston rod. This utility model, through its oil-gas separation mechanism, achieves precise separation of oil droplets of different sizes through a four-stage processing flow: "threaded strip-guided cyclone – helical blade secondary cyclone – mesh turbulent coalescence – constriction shearing and diameter increase." Furthermore, it requires no additional power source, relying on the kinetic energy of the air compressor exhaust to drive the rotation of the helical blades and achieve gas flow, converting gas kinetic energy into separation power. Compared to separation devices driven by electric motors, energy consumption is significantly reduced, effectively saving operating costs.

Description

Technical Field

[0001] This utility model relates to the field of air compressor equipment technology, specifically to a cyclone-guided air compressor oil-gas separation device. Background Technology

[0002] Air compressors, as core equipment providing compressed air power, are widely used in many fields such as machinery manufacturing, electronics and semiconductors, food and medicine. However, the oil-air mixture formed when lubricating oil mixes with compressed air during air compressor operation not only reduces the quality of the air source, causing problems such as failure of downstream precision equipment and product contamination, but also leads to lubricating oil waste and increased equipment maintenance costs.

[0003] A novel oil-gas separation system for an air compressor, disclosed in patent announcement number CN213205980U, includes a device body, an absorber rotatably connected to the output end of a motor, several absorber plates on the surface of the absorber, grooves on the front and rear outer walls of the absorber plates, a collection groove between the grooves, a first leakage hole at the end of the collection groove, a conduit penetrating the absorber plates, a collection pipe on the inner surface of the device body, a second leakage hole on the left and right outer walls of the collection pipe, an inlet pipe penetrating the device body on one side, an outlet pipe penetrating the device body on the other side, a receiving groove connected to the lower flange of the device body, and a discharge port at the bottom of the receiving groove. The absorber is driven by a motor, and the absorber rotates, causing the absorber plates to rotate. Gas entering from the inlet pipe can fully contact the absorber plates, ensuring that oil droplets collect on the surface of the absorber plates.

[0004] The above-mentioned technical solution requires the use of an additional motor drive in the process of oil-gas separation, which increases energy consumption. Its separation mechanism is simple, relying only on contact adsorption and centrifugal force, which makes it difficult to effectively handle high-concentration oil-gas mixtures and tiny oil mist particles, and easily leads to excessive oil content in the gas output. Utility Model Content

[0005] The purpose of this invention is to provide a cyclone-guided air compressor oil-gas separation device to solve the problems mentioned in the background art, such as the oil-gas separation system relying on additional power, having a single separation mechanism, insufficient high-concentration oil-gas processing capacity, low efficiency in separating tiny oil droplets, and high system energy consumption.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A swirl-guided air compressor oil-gas separation device includes an oil-gas separation mechanism connected to the exhaust port of the piston cylinder of the air compressor. The end of the oil-gas separation mechanism away from the exhaust port is connected to a first three-way pipe, and one end of the first three-way pipe is connected to the lubricating fluid storage chamber inside the piston cylinder.

[0007] As a preferred embodiment of this utility model, one end of the air port on the upper surface of the first three-way pipe is connected to and installed with a second three-way pipe, and the other two ends of the second three-way pipe are connected to the air inlet of the gas storage tank.

[0008] As a preferred embodiment of this utility model, the oil-gas separation mechanism includes a cone, which is connected to one end of the exhaust port of the piston cylinder, and the other end of the cone is connected to one end of the first three-way pipe. A threaded strip is fixedly installed on the inner wall of the cone in a protruding shape, so as to form a swirling cavity inside the cone.

[0009] As a further embodiment of this utility model, both the cone and the threaded strip on the inner wall are tapered from large to small.

[0010] As a further preferred embodiment of this utility model, a cross disc is fixedly installed on the upper surface of the cone, a turntable is rotatably installed inside the cross disc, a rotating rod is fixedly installed on the lower surface of the turntable, the rotating rod passes through the lower surface of the cross disc and is located inside the cone, and a helical blade is fixedly installed on the outer surface of the rotating rod.

[0011] As a further embodiment of this invention, the spiral blades are located in the center of the cone, and the diameter of the blades is also conical, decreasing from large to small.

[0012] As a further embodiment of this invention, the lower half of the spiral blade has mesh openings.

[0013] Compared with the prior art, the beneficial effects of this utility model of a cyclone-guided air compressor oil-gas separation device are as follows: When the air compressor starts, during the compression of air in the piston cylinder, the oil-gas mixture formed by the lubricant and air is discharged into the oil-gas separation mechanism through the exhaust port. The oil-gas mixture enters the oil-gas separation mechanism at high speed in a tangential manner and flows out spirally downward in the swirling chamber within the oil-gas separation mechanism. Under the centrifugal force of the spiral, larger oil droplets are thrown against the inner wall of the oil-gas separation mechanism and slide down the wall to the bottom oil outlet. They then flow back to the lubricant storage chamber of the piston cylinder through the first three-way pipe, thus realizing the recycling of lubricating oil. The pure compressed air after multi-stage separation enters the second three-way pipe through the air port on the upper surface of the first three-way pipe and finally returns to the system through the air inlet of the air tank, providing a clean air source for downstream equipment. Moreover, the oil-gas separation process fully utilizes the exhaust kinetic energy of the air compressor to form a swirling field, without the need for additional electricity or mechanical drive, which significantly reduces operating costs compared to motor-driven separation systems. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only examples of embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model; Figure 2 This is a schematic diagram showing the connection between the exhaust port of the piston cylinder and the oil-gas separation mechanism in an embodiment of this utility model. Figure 3 This is a schematic diagram of the oil-gas separation mechanism in an embodiment of the present invention; Figure 4 This is a schematic diagram of the cone and threaded strip in an embodiment of the present invention.

[0016] Reference numerals in the attached drawings: 1. Air compressor; 101. Piston cylinder; 102. First tee pipe; 103. Second tee pipe; 2. Oil-gas separation mechanism; 201. Conical cylinder; 202. Threaded strip; 203. Cross disc; 204. Rotating rod; 205. Helical blade; 206. Rotary disc; 207. Mesh. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only for explaining the present invention and are not intended to limit the present invention.

[0018] In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention.

[0019] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection" and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an integral connection, or a detachable connection; they can refer to the internal connection of two components; they can refer to a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present invention should be understood according to the specific circumstances.

[0020] See Figures 1-2 As shown in the figure, an embodiment of the present invention provides a swirl-guided air compressor oil-gas separation device, including an oil-gas separation mechanism 2 connected to the exhaust port of the piston cylinder 101 of the air compressor 1. The end of the oil-gas separation mechanism 2 away from the exhaust port is connected to a first three-way pipe 102. One end of the first three-way pipe 102 is connected to the lubricating fluid storage chamber inside the piston cylinder 101. One end of the air port on the upper surface of the first three-way pipe 102 is connected to a second three-way pipe 103. The other two ends of the second three-way pipe 103 are connected to the air inlet of the air storage tank.

[0021] When the air compressor 1 starts, during the air compression process, the oil-gas mixture formed by the lubricant and air is discharged into the oil-gas separation mechanism 2 through the exhaust port. The oil-gas mixture enters the oil-gas separation mechanism 2 at high speed in a tangential manner and spirals downward in the swirling chamber within the oil-gas separation mechanism 2. Under the centrifugal force of the spiral, larger oil droplets are thrown towards the inner wall of the oil-gas separation mechanism 2 and slide down the wall to the bottom oil outlet. They then flow back to the lubricant storage chamber of the piston cylinder 101 through the first three-way pipe 102, thus realizing the recycling of lubricating oil. The pure compressed air after multi-stage separation enters the second three-way pipe 103 through the air port on the upper surface of the first three-way pipe 102, and finally returns to the system through the air inlet of the air tank, providing a clean air source for downstream equipment. Moreover, the oil-gas separation process fully utilizes the exhaust kinetic energy of the air compressor 1 to form a swirling field, without the need for additional electricity or mechanical drive, which significantly reduces operating costs compared to motor-driven separation systems.

[0022] like Figures 3-4 As shown, the oil-gas separation mechanism 2 includes a cone 201, which is connected to one end of the exhaust port of the piston cylinder 101. The other end of the cone 201 is connected to one end of the first three-way pipe 102. A threaded strip 202 is fixedly installed on the inner wall of the cone 201 in a protruding shape, thereby forming a swirling cavity inside the cone 201. Both the cone 201 and the threaded strip 202 on the inner wall are tapered from large to small. A cross disc 2 is fixedly installed on the upper surface inside the cone 201. 03. A turntable 206 is rotatably installed inside the cross disc 203. A rotating rod 204 is fixedly installed on the lower surface of the turntable 206. The rotating rod 204 passes through the lower surface of the cross disc 203 and is located inside the cone 201. A spiral blade 205 is fixedly installed on the outer surface of the rotating rod 204. The spiral blade 205 is located in the center of the cone 201, and the diameter of the blade is also conical from large to small. A mesh 207 is opened on the lower half surface of the spiral blade 205.

[0023] After the air compressor 1 starts, during the air compression process, the piston cylinder 101 generates an oil-air mixture formed by the lubricant and air, which is discharged into the cone 201 through the exhaust port. The threaded strips 202 on the inner wall of the cone 201 guide the airflow to form a downward spiral flow field. Under the action of centrifugal force, larger oil droplets are thrown towards the wall of the cone 201 and slide down the wall to the bottom oil outlet. The remaining airflow containing tiny oil droplets continues to flow downward, impacting the spiral blades 205 installed at the center of the cone 201. This causes the spiral blades 205 to rotate under the push of the airflow. The conical structure of the cone 201 creates multi-angle collisions with the airflow, forcing a secondary vortex in the central region of the cone 201. The enhanced centrifugal force field causes more tiny oil droplets to be thrown towards the wall. Simultaneously, the axial thrust generated by the rotation of the helical blade 205 accelerates the settling velocity of the oil droplets. Some oil droplets coalesce on the blade surface and slide down the conical surface to the bottom. When the airflow reaches the lower half of the helical blade 205, the presence of the mesh 207 allows some airflow to pass through the blade, forming turbulent disturbances, further promoting the collision and coalescence between tiny oil droplets. Oil droplets not captured by the mesh 207, after passing through the blade, are further affected by the conical structure. The constricted structure of 201 and the threaded bar 202 causes a sudden increase in airflow velocity. The resulting shear force aggregates smaller oil droplets into separable particles. Finally, under the combined action of gravity and centrifugal force, all the separated oil flows back to the lubricant storage chamber through the first three-way pipe 102, while the pure air returns to the air storage tank through the second three-way pipe 103, completing a highly efficient separation cycle. This process, involving a four-stage treatment flow of "threaded bar 202 guiding swirling flow - helical blade 205 secondary swirling flow - mesh 207 turbulent coalescence - constriction shearing diameter increase," achieves precise separation of oil droplets of different sizes, from large-diameter droplets... The centrifugal separation of oil droplets, the collision and coalescence of tiny oil droplets, and the forced increase in diameter significantly improve the overall separation efficiency. The oil content of the outlet gas can be stably controlled at an extremely low level, meeting the needs of industries such as electronics and pharmaceuticals that have extremely high requirements for gas source quality. Moreover, no additional power source is required. The rotation of the spiral blade 205 and the gas flow are driven entirely by the kinetic energy of the exhaust gas of the air compressor 1. The threaded bar 202 guides the initial swirling flow, and the spiral blade 205 enhances the swirling flow. The entire process converts the kinetic energy of the gas into separation power. Compared with separation devices that rely on motor drive, energy consumption is significantly reduced, effectively saving operating costs.

[0024] This utility model discloses a cyclone-guided air compressor oil-gas separation device. Through a four-stage processing flow of "threaded bar 202 guiding cyclone - helical blade 205 secondary cyclone - mesh 207 turbulent coalescence - narrowing shearing diameter increase", it achieves precise separation of oil droplets of different particle sizes. Moreover, it does not require an additional power source. It relies entirely on the kinetic energy of the exhaust gas of the air compressor 1 to drive the rotation of the helical blade 205 and realize gas flow. The kinetic energy of the gas in the entire process is converted into separation power. Compared with separation devices that rely on motor drive, energy consumption is significantly reduced, effectively saving operating costs.

[0025] The foregoing has shown and described the basic principles of the present invention. The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. The above embodiments and descriptions in the specification are only illustrative of the principles of the present invention. Any modifications, equivalent substitutions, and improvements made within the scope of the present invention without departing from the scope of the present invention should be included within the protection scope of the present invention.

Claims

1. A cyclone-guided type oil-gas separator for air compressors, characterized in that: It includes an oil-gas separation mechanism (2) connected to the exhaust port of the piston cylinder (101) installed in the air compressor (1), and the end of the oil-gas separation mechanism (2) away from the exhaust port is connected to a first three-way pipe (102), and one end of the first three-way pipe (102) is connected to the lubricating fluid storage chamber in the piston cylinder (101); The oil-gas separation mechanism (2) includes a cone (201), which is connected to one end of the exhaust port of the piston cylinder (101). The other end of the cone (201) is connected to one end of the first three-way pipe (102). A threaded strip (202) is fixedly installed on the inner wall of the cone (201) in a protruding shape, so as to form a swirling cavity inside the cone (201). A cross disc (203) is fixedly installed on the upper surface inside the cone (201). A turntable (206) is rotatably installed inside the cross disc (203). A rotating rod (204) is fixedly installed on the lower surface of the turntable (206). The rotating rod (204) passes through the lower surface of the cross disc (203) and is located inside the cone (201). A spiral blade (205) is fixedly installed on the outer surface of the rotating rod (204).

2. The cyclone-guided oil-gas separator for an air compressor according to claim 1, characterized in that: One end of the air port on the upper surface of the first three-way pipe (102) is connected to a second three-way pipe (103), and the other two ends of the second three-way pipe (103) are connected to the air inlet of the gas storage tank.

3. The cyclone-guided oil-gas separator for an air compressor according to claim 1, characterized in that: The cone (201) and the threaded strip (202) on the inner wall are both tapered from large to small.

4. The cyclone-guided air compressor oil-gas separator according to claim 1, characterized in that: The spiral blade (205) is located in the center of the cone (201), and the diameter of the blade is also conical from large to small.

5. The cyclone-guided oil-gas separator for an air compressor according to claim 4, characterized in that: The lower half of the surface of the spiral blade (205) is provided with a mesh (207).

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