Hydrocarbon retarding structure and sliding vane air compressor

Abstract

The present disclosure relates to the technical field of sliding vane air compressor, and particularly relates to an oil-gas deceleration structure and a sliding vane air compressor. The oil-gas deceleration structure provided by the present disclosure comprises a shell, an inner cavity is arranged in the shell; a stator is arranged in the cavity; a rotor is rotatably arranged in an eccentric hole of the stator; a sliding vane is arranged in a mounting groove of the rotor; the shell, the stator, the rotor and the sliding vane form an air suction cavity and a compression cavity; a side wall of the stator is provided with a plurality of air outlets which are in communication with the compression cavity; a deceleration component is arranged in the cavity; wherein the deceleration component comprises an air inlet hole and a plurality of air outlet holes, the air inlet hole is in communication with the air outlet, and the plurality of air outlet holes are all in communication with the air inlet hole, so that the efficiency of the whole oil-gas separation system can be improved, the oil content in the compressed air can be reduced, and the quality of the compressed air can be improved.

Description

Technical Field

[0001] This disclosure relates to the field of vane air compressor technology, and more particularly to an oil-gas slow-speed structure and a vane air compressor. Background Technology

[0002] Vane air compressors are widely used in industries such as machinery manufacturing, food processing, and medical applications due to their compact structure, stable operation, and low noise. During the operation of a vane air compressor, a mixture of lubricating oil and compressed air is generated in the stator cavity. To obtain pure compressed air, the mixture needs to be processed by an oil separator and an oil-gas separator to filter and separate the lubricating oil, reducing the oil content of the outgoing gas to meet the air requirements of different working conditions.

[0003] If the oil content in the mixed gas entering the oil separator is too high, exceeding the processing capacity of the oil-gas separator, the oil content in the gas will also fail to be effectively reduced. Utility Model Content

[0004] This disclosure provides an oil-gas slow-speed structure and a vane air compressor to at least solve the above-mentioned technical problems existing in the prior art.

[0005] The first aspect of this disclosure provides an oil and gas retardation structure, comprising:

[0006] The shell has an internal cavity;

[0007] The stator is disposed in the cavity;

[0008] The rotor is rotatably mounted in the eccentric hole of the stator;

[0009] A sliding vane is installed in the mounting slot of the rotor. The housing, the stator, the rotor, and the sliding vane constitute an intake chamber and a compression chamber. The side wall of the stator is provided with multiple air outlets communicating with the compression chamber.

[0010] A deceleration component is disposed in the cavity;

[0011] The slowing component includes an air inlet and multiple air outlets. The air inlet is connected to the air outlet, and the multiple air outlets are all connected to the air inlet.

[0012] Furthermore, the diameter of the air outlet is smaller than the diameter of the air inlet.

[0013] Furthermore, a filter element is provided inside the air inlet.

[0014] Furthermore, the diameter D1 of the air inlet satisfies: 20mm≤D1≤30mm.

[0015] Furthermore, the diameter D2 of the air outlet satisfies: 2.5mm≤D2≤3.5mm.

[0016] Furthermore, the air outlet includes a first section and a second section, the first section being disposed near the air inlet and the second section being disposed near the air outlet;

[0017] The diameter of the first hole segment is larger than the diameter of the second hole segment.

[0018] Furthermore, the diameter of the air outlet gradually decreases along the direction away from the air inlet.

[0019] Furthermore, the filter element is provided with honeycomb-shaped flow channels.

[0020] The second aspect of this disclosure provides a vane-type air compressor, including the oil-gas slow-relief structure described in the first aspect.

[0021] The technical solution provided in this disclosure has the following advantages compared with the prior art:

[0022] The oil-gas retarder structure provided in this embodiment includes a housing, a stator, a rotor, and a retarder component. The housing has an internal cavity, and the stator is disposed in the cavity. The rotor is rotatably mounted in the eccentric hole of the stator. A sliding vane is mounted in the mounting slot of the rotor. The housing, stator, rotor, and sliding vane constitute an intake chamber and a compression chamber. The side wall of the stator has multiple air outlets communicating with the compression chamber. The retarder component is disposed in the cavity. The retarder component includes an air inlet and multiple air outlets. The air inlet communicates with the air outlets, and the multiple air outlets communicate with the air inlet.

[0023] The design of connecting the air inlet and multiple outlets in the deceleration component, with the outlet diameter smaller than the inlet, creates a throttling effect. When the high-speed mixed gas generated by the stator cavity compression enters the air inlet of the deceleration component from the outlet, it flows out dispersed through multiple outlets, increasing the gas flow cross-sectional area. According to fluid mechanics principles, the flow velocity is significantly reduced, allowing the mixed gas to enter the subsequent oil-gas separation stage at a lower speed, creating conditions for efficient oil-gas separation. When the lower-velocity mixed gas enters the oil-gas separation device, the oil droplets, due to reduced inertia, are more easily separated from the gas by gravity and filtration. The deceleration component allows oil droplets more time to adhere to the filter element or the inner wall of the cavity, reducing the oil content flowing into the subsequent separation device, thereby improving the efficiency of the entire oil-gas separation system, reducing the oil content in the compressed air, and improving the quality of compressed air.

[0024] Furthermore, the interconnected layout of multiple air outlets and inlets ensures that the mixed gas flows out evenly and disperses, preventing excessively high or low local flow velocities and ensuring smooth gas flow within the chamber, thus reducing pressure fluctuations. Stable airflow contributes to improved stability and reliability of the air compressor, guaranteeing consistent compressed air supply quality.

[0025] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this disclosure, nor is it intended to limit the scope of this disclosure. Other features of this disclosure will become readily apparent from the following description. Attached Figure Description

[0026] The above and other objects, features, and advantages of this disclosure will become readily apparent from the following detailed description of exemplary embodiments, taken in conjunction with the accompanying drawings. Several embodiments of this disclosure are illustrated in the drawings by way of example and not limitation, in which:

[0027] In the accompanying drawings, the same or corresponding reference numerals indicate the same or corresponding parts.

[0028] Figure 1 A schematic diagram of the oil and gas retardation structure provided in the embodiments of this disclosure is shown. Figure 1 ;

[0029] Figure 2 A schematic diagram of the oil and gas retardation structure provided in the embodiments of this disclosure is shown. Figure 2 ;

[0030] Figure 3 A schematic diagram of the retarder component in the oil and gas retarder structure provided in this embodiment is shown. Figure 1 ;

[0031] Figure 4 A schematic diagram of the retarder component in the oil and gas retarder structure provided in this embodiment is shown. Figure 2 ;

[0032] Figure 5 A schematic diagram of the retarder component in the oil and gas retarder structure provided in this embodiment is shown. Figure 3 .

[0033] The following are the labels in the diagram: 1. Housing; 2. Stator; 21. Air outlet; 3. Rotor; 4. Sliding vane; 8. Deceleration component; 81. Air inlet; 82. Air outlet; 83. Filter element; 821. First section; 822. Second section. Detailed Implementation

[0034] To make the objectives, features, and advantages of this disclosure more apparent and understandable, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this disclosure, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0035] Combination Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the oil-gas retarder structure provided in this embodiment includes a housing 1, a stator 2, a rotor 3, and a retarder component 8. The housing 1 has an internal cavity, and the stator 2 is disposed in the cavity. The rotor 3 is rotatably installed in the eccentric hole of the stator 2. The sliding vane 4 is installed in the mounting groove of the rotor 3. The housing 1, stator 2, rotor 3, and sliding vane 4 constitute an intake chamber and a compression chamber. The side wall of the stator 2 is provided with multiple air outlets 21 communicating with the compression chamber. The retarder component 8 is disposed in the cavity. The retarder component 8 includes an air inlet 81 and multiple air outlets 82. The air inlet 81 communicates with the air outlets 21, and the multiple air outlets 82 are all communicated with the air inlet 81.

[0036] The design of connecting the air inlet 81 and multiple air outlets 82 in the deceleration component 8, with the outlet diameter of the outlets 82 being smaller than that of the inlet 81, creates a throttling effect. When the high-speed mixed gas generated by the compression of the stator 2 cavity enters the air inlet 81 of the deceleration component 8 from the outlet 21, it flows out dispersedly through the multiple outlets 82. On the one hand, the mixed gas flows in a scattering pattern in all directions after passing through the multiple outlets 82; on the other hand, the mixed gas can undergo multiple deflections inside the deceleration component 8, thereby dispersing the mixed gas. During dispersion, some oil and water can be separated, and the oil can be separated out. The increased gas flow cross-sectional area, according to the principles of fluid mechanics, significantly reduces the flow velocity, allowing the mixed gas to enter the subsequent oil-gas separation stage at a lower speed, creating conditions for efficient oil-gas separation. When the mixed gas with a lower flow velocity enters the oil-gas separation device, the oil droplets, due to reduced inertia, are more easily separated from the gas under the action of gravity, filtration, etc. The slowing component 8 allows oil droplets more time to adhere to the filter element 83 or the inner wall of the cavity, reducing the amount of oil flowing into the subsequent separation device, thereby improving the efficiency of the entire oil-gas separation system, reducing the oil content in the compressed air, and improving the quality of compressed air.

[0037] Furthermore, the interconnected layout of multiple air outlets 82 and air inlets 81 ensures that the mixed gas flows out evenly and disperses, preventing excessively high or low local flow velocities and ensuring smooth gas flow within the cavity, thus reducing pressure fluctuations. Stable airflow helps improve the stability and reliability of the air compressor's operation, guaranteeing consistent compressed air supply quality.

[0038] In some specific embodiments, the diameter of the outlet 82 is smaller than that of the inlet 81. According to the fluid mechanics continuity equation, when gas flows in from the larger inlet 81 and out through the smaller outlet 82, the flow cross-sectional area decreases abruptly, and the gas velocity is forced to decrease due to the "bottleneck effect." For example, assuming the gas velocity at the inlet 81 is 20 m / s, after passing through the outlet 82 with a diameter reduced to 1 / 3, the velocity can drop to approximately 6-7 m / s. When the mixed gas with a lower velocity enters the oil-gas separator, the inertia of the oil droplets is weakened, making it easier for them to separate from the gas by gravity, centrifugal force, or filtration, directly improving the oil-gas separation efficiency.

[0039] As the gas flow rate decreases, the residence time of oil droplets within the slowing component 8 increases, raising the probability of collisions and coalescence between droplets. The smaller diameter of the vent 82 also induces localized gas turbulence, causing oil droplets to frequently come into contact under irregular airflow disturbances, accelerating their aggregation into larger droplets. These larger droplets are more likely to settle to the bottom of the cavity due to gravity and flow back to the oil storage cavity through the return oil channel, thereby reducing the oil content entering the subsequent separation stage.

[0040] Multiple small-diameter air outlets 82 can disperse the concentrated airflow from the air inlet 81 into multiple fine streams, avoiding airflow deviation or vortex phenomena caused by a single large-diameter air outlet 82. The uniform airflow distribution helps stabilize the pressure in each area within the slow-moving component 8, allowing the gas to flow smoothly within the cavity, reducing the interference of pressure fluctuations on the oil-gas separation effect, and ensuring the stability and reliability of the air compressor operation.

[0041] In some specific embodiments, a filter element 83 is provided inside the air inlet 81. The surface of the filter element 83 has a large number of fine pores and irregular structures. When the mixed gas passes through, the gas molecules need to continuously collide and circulate with the pore walls of the filter material, allowing the mixed gas to undergo multiple deflections inside the deceleration component 8. This disperses the mixed gas, and during dispersion, some oil and water can be separated, separating the oil. The mixed gas flows out in a scattering pattern in all directions after passing through multiple air outlets 82. The mechanical resistance formed by the large number of fine pores and irregular structures on the surface of the filter element 83 increases the resistance to gas flow, resulting in a significant increase in the residence time in this area. This allows the mixed gas to enter the subsequent oil-gas separation stage at a lower velocity. When the mixed gas enters the oil-gas separation device at a lower velocity, the oil droplets are more easily separated from the gas under the action of gravity and filtration due to reduced inertia. The oil droplets have more time to adhere to the filter element 83, reducing the oil content flowing into the subsequent separation device, thereby improving the efficiency of the entire oil-gas separation system, reducing the oil content in the compressed air, and improving the quality of compressed air.

[0042] Optionally, the filter element 83 can be a metal mesh, or a sintered metal mesh. Optionally, the filter element 83 can be honeycomb-shaped.

[0043] In some specific implementations, the diameter D1 of the air inlet 81 satisfies: 20mm≤D1≤30mm. Setting the diameter of the air inlet 81 to 20mm-30mm ensures sufficient gas flow and avoids excessive intake resistance due to an excessively small diameter, which would affect the air compressor's discharge capacity.

[0044] In some specific embodiments, the orifice diameter D2 of the outlet 82 satisfies: 2.5mm ≤ D2 ≤ 3.5mm. Controlling the orifice diameter of the outlet 82 to 2.5mm-3.5mm creates a significant diameter difference with the inlet 81, effectively achieving throttling and pressure reduction. According to Bernoulli's equation, when gas flows from the large-diameter inlet 81 to the small-diameter outlet 82, the flow velocity increases significantly, and the pressure decreases. After passing through the deceleration component 8, the gas velocity can be stably reduced from the initial 30-50m / s to 3-5m / s, meeting the requirements of the oil-gas separator for low-velocity gas and ensuring efficient oil-gas separation.

[0045] In some specific embodiments, the outlet 82 includes a first orifice section 821 and a second orifice section 822. The first orifice section 821 is located near the inlet 81, and the second orifice section 822 is located near the outlet 82. The diameter of the first orifice section 821 is larger than that of the second orifice section 822. This embodiment achieves multi-stage throttling of the mixed gas by gradually reducing the diameter from the first orifice section 821 to the second orifice section 822. The gas first diffuses initially in the larger orifice section 821, resulting in an initial reduction in flow velocity. When it enters the smaller orifice section 822, according to Bernoulli's principle, the gas flow cross-sectional area further decreases, leading to another reduction in flow velocity and an increase in pressure. This staged deceleration method can precisely reduce the high-speed gas (30-50 m / s) discharged from the air compressor to a low-speed range (3-5 m / s) suitable for oil-gas separation. Compared to single-stage throttling, the deceleration process is smoother and more controllable, avoiding the impact of sudden airflow changes on the equipment.

[0046] When gas flows through channels with decreasing apertures, it generates an acceleration effect and local eddies. Accelerated flow increases the inertia of oil droplets, making them more likely to impact the channel walls or coalesce. Eddies disrupt the airflow, increasing the probability of oil droplets contacting the walls and filter element 83. Large, coalesced oil droplets, under the influence of gravity and airflow, quickly adhere to the channel walls and slide down to the oil collection area, effectively reducing the oil content entering the subsequent oil-gas separation unit and improving oil droplet separation efficiency by 25%-35%.

[0047] In some specific embodiments, the diameter of the outlet 82 gradually decreases along the direction away from the inlet 81. As the diameter of the outlet 82 gradually decreases, the gas flow cross-sectional area continuously decreases, and according to the continuity equation, the gas velocity gradually decreases. Compared to the throttling method with abrupt changes in orifice diameter, this gradual structure allows the gas to undergo a smooth deceleration process, avoiding strong turbulence and pressure fluctuations caused by sudden changes in flow velocity. When the gas accelerates within the gradually narrowing orifice channel, the oil droplets, due to their greater inertia, are more likely to collide with the channel wall or filter element 83, promoting oil droplet coalescence and enlargement. At the same time, the local eddies caused by the change in flow velocity increase the contact probability between oil droplets and between oil droplets and the wall. The large oil droplets after coalescence quickly adhere to the inner wall of the channel under the action of gravity and airflow and slide down the wall to the oil collection area, significantly reducing the oil content entering the oil-gas separator and improving the oil droplet separation efficiency by 20%-30%.

[0048] In some specific embodiments, the filter element 83 is provided with honeycomb-shaped flow guiding channels. The regularly arranged honeycomb-shaped flow guiding channels can evenly disperse the concentrated mixed airflow entering the deceleration component 8 into multiple fine streams, avoiding the formation of flow deviation or eddies at the filter element 83. This uniform flow guiding effect makes the velocity and pressure distribution of the gas in different areas of the deceleration component 8 more balanced, preventing the deceleration effect from being affected by excessively high local velocity, and creating stable airflow conditions for subsequent oil-gas separation.

[0049] The sliding vane air compressor provided in this disclosure includes the oil-gas retarder structure provided in this disclosure. Since the sliding vane air compressor and the oil-gas retarder structure provided in this disclosure have the same advantages, they will not be described again here.

[0050] It should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this disclosure, "a plurality of" means two or more, unless otherwise explicitly specified.

[0051] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. An oil-gas retarding structure, characterized in that, include: The shell (1) has an internal cavity; Stator (2) is disposed in the cavity; The rotor (3) is rotatably mounted in the eccentric hole of the stator (2); The sliding vane (4) is installed in the mounting slot of the rotor (3). The housing (1), the stator (2), the rotor (3) and the sliding vane (4) constitute an air intake chamber and a compression chamber. The side wall of the stator (2) is provided with a plurality of air outlets (21) communicating with the compression chamber. A deceleration component (8) is disposed in the cavity; The slowing component (8) includes an air inlet (81) and multiple air outlets (82). The air inlet (81) is connected to the air outlet (21), and the multiple air outlets (82) are all connected to the air inlet (81).

2. The oil and gas retarding structure according to claim 1, characterized in that, The diameter of the air outlet (82) is smaller than the diameter of the air inlet (81).

3. The oil and gas retarding structure according to claim 1, characterized in that, The air inlet (81) is equipped with a filter (83).

4. The oil and gas retarding structure according to claim 1, characterized in that, The diameter D1 of the air inlet (81) satisfies: 20mm≤D1≤30mm.

5. The oil and gas retarding structure according to claim 1, characterized in that, The diameter D2 of the air outlet (82) satisfies: 2.5mm≤D2≤3.5mm.

6. The oil and gas retarding structure according to claim 1, characterized in that, The air outlet (82) includes a first hole section (821) and a second hole section (822), wherein the first hole section (821) is disposed near the air inlet (81) and the second hole section (822) is disposed near the air outlet (82); The diameter of the first hole segment (821) is larger than the diameter of the second hole segment (822).

7. The oil and gas retarding structure according to claim 1, characterized in that, Along the direction away from the air inlet (81), the diameter of the air outlet (82) gradually decreases.

8. The oil and gas retarding structure according to claim 3, characterized in that, The filter element (83) is provided with a honeycomb-shaped flow channel.

9. A vane-type air compressor, characterized in that, Includes the oil and gas retarding structure as described in any one of claims 1 to 8.

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