An air compressor unit

Abstract

The application discloses an air compressor unit and particularly relates to the technical field of compressors, which comprises a cylinder body, a crankshaft rotatably installed on the top of the cylinder body, a connecting rod rotatably connected to the connecting rod shaft neck of the crankshaft, a piston vertically and slidably installed at the lower part of the inner cavity of the cylinder body and rotatably connected to the end of the connecting rod, an oil drainer installed at the bottom of the cylinder body and linked with the piston, two elbow pipes penetrating through the cylinder body, one end of one of the elbow pipes extending out of the cylinder body and connected with an exhaust mechanism, one end of the other elbow pipe extending out of the cylinder body and connected with an air intake mechanism, an air intake port of the air intake mechanism connected with a flow divider, a porous radiator arranged outside the lower part of the cylinder body, a plurality of through holes vertically and penetrating through the porous radiator, and the air intake port of the flow divider partially covering the top opening of each through hole of the porous radiator. The air compressor unit can intermittently discharge the accumulated oil liquid, so that the oil liquid does not affect the operation of the air compressor unit.

Description

Technical Field

[0001] This invention belongs to the field of compressor technology, and specifically relates to an air compressor unit. Background Technology

[0002] An air compressor is a device that converts the mechanical energy of a prime mover (such as an electric motor or internal combustion engine) into gas pressure energy. By compressing the air volume within the compression chamber, the distance between air molecules is reduced, thereby increasing the air pressure and density. Specifically, an air compressor uses internal mechanical structures, such as screws and pistons, to compress air into high-pressure gas.

[0003] Because air contains a small amount of gaseous organic matter, air compressors liquefy some of this organic matter into oil when compressing air. Over time, a significant amount of oil accumulates inside the air compressor, affecting its normal operation. Existing air compressors either have complex filtration systems to pre-filter organic matter from the air, or they have oil-gas separators installed on the exhaust side, increasing the compressor's size and making it inconvenient to install in confined spaces.

[0004] Therefore, a new type of air compressor unit is needed. Summary of the Invention

[0005] To address the above problems, this invention discloses an air compressor unit.

[0006] To achieve the above objectives, the technical solution of the present invention is as follows:

[0007] An air compressor unit includes a cylinder block, a crankshaft rotatably mounted on the top of the cylinder block, a connecting rod rotatably connected to the connecting rod journal of the crankshaft, a piston vertically slidingly mounted in the lower part of the inner cavity of the cylinder block, and the piston rotatably connected to the end of the connecting rod, the bottom of the cylinder block having a downward conical protrusion, and an oil drainer linked to the piston being mounted at the tip of the conical protrusion, two elbow pipes penetrating the cylinder block being installed at the bottom of the cylinder block, one elbow pipe extending out of the cylinder block being connected to an exhaust mechanism, and the other elbow pipe extending out of the cylinder block being connected to an intake mechanism, the intake port of the intake mechanism being connected to a distributor, and a perforated radiator being sleeved on the lower part of the cylinder block, the perforated radiator having several through holes extending vertically, and the intake port of the distributor partially covering the top opening of each through hole of the perforated radiator;

[0008] The intake mechanism includes: an intake valve body with a horizontal opening connected to an elbow pipe, a vertical valve core slidably mounted on the intake valve body, the conical end of the vertical valve core being adapted to the vertical opening of the intake valve body, and a third spring connected to the flat end of the vertical valve core.

[0009] The vertical opening of the air inlet valve body is communicated with a filter box, and a filter core is arranged in the filter box, and the top of the filter box is communicated with a flow divider through a connecting pipe;

[0010] The flow divider comprises a flow divider cover with an opening facing a porous radiator, and a flow divider ring with a plurality of through holes is inlaid in the flow divider cover, the connecting pipe is communicated with the inner cavity of the flow divider cover, and the communication position is above the flow divider ring.

[0011] As a preferred technical solution of the present application, the two end main shaft necks of the crankshaft are coaxially sleeved with sealing bearings, and the sealing bearings are inlaid on the inner wall of the cylinder body.

[0012] As a preferred technical solution of the present application, the oil discharger comprises an outer shell body inlaid in the cylinder body, an inner core body vertically slidingly installed in the outer shell body, a flow cavity formed in the inner core body, transverse openings arranged at the top and bottom of the flow cavity, a transverse opening arranged on the outer shell body and slidingly matched with the transverse opening of the flow cavity, a through hole formed in the top of the outer shell body and communicated with the inner cavity thereof, and a first spring connected to the bottom of the inner core body.

[0013] As a preferred technical solution of the present application, a tapered upward protrusion is arranged at the bottom of the flow cavity of the inner core body, the middle part of the inner core body is narrowed, and the transverse opening at the bottom of the flow cavity is arranged at the narrowed part.

[0014] As a preferred technical solution of the present application, the exhaust mechanism comprises an exhaust valve body with a horizontal opening communicated with an elbow pipe, a horizontal valve core slidingly installed in the inner cavity of the exhaust valve body, a tapered head end of the horizontal valve core matched with the opening of the exhaust valve body facing the elbow pipe, a flat head end of the horizontal valve core connected with a second spring, and an outer thread arranged on the vertical opening extension pipe of the exhaust valve body.

[0015] As a preferred technical solution of the present application, the elbows of the two elbow pipes in the inner cavity of the cylinder body are both downwardly opened.

[0016] As a preferred technical solution of the present application, one end of the crankshaft protruding out of the cylinder body is coaxially fixedly connected with a first transmission wheel, the first transmission wheel is matched with a transmission belt, the transmission belt is simultaneously sleeved with a second transmission wheel, the second transmission wheel is coaxially fixedly connected with a driving motor, the top of the driving motor is fixedly connected with a fixing frame, and the top of the cylinder body is fixedly connected with the fixing frame.

[0017] The present application has the following beneficial effects:

[0018] I. When the cylinder inhales, the air is sucked by the flow distributor, and the air inlet of the flow distributor faces the porous radiator hole. When the air is sucked, the flow distributor also drives the air to flow through the porous radiator hole, thereby cooling the cylinder. Then the air is sucked into the cylinder through the air inlet mechanism. The air compressor group can continuously compress air without overheating and runs stably due to the cooling of the cylinder by the flow distributor and the porous radiator when inhaling.

[0019] II. When the piston moves upward, the inner core moves to the top of the cylinder under the elastic force of the first spring and the external air pressure. When the piston moves downward, the inner core moves downward. At a certain moment of the movement of the inner core, the top transverse opening of the flow cavity is connected with the top transverse opening of the outer shell, and the bottom transverse opening of the flow cavity is connected with the bottom transverse opening of the outer shell. Under the high-pressure air flow in the cylinder, most of the oil in the flow cavity is sprayed out from the bottom. Finally, the inner core moves to the bottom, the bottom transverse opening of the flow cavity is aligned with the bottom transverse opening of the outer shell, and the oil in the flow cavity flows out through the bottom transverse opening of the flow cavity. The top transverse opening of the flow cavity is completely misaligned with the top transverse opening of the outer shell. Under the reciprocating operation of the piston, the oil accumulated at the bottom of the cylinder 1 is intermittently discharged, so that the oil does not affect the continuous operation of the air compressor group. At the same time, the overall structure of the air compressor group is compact and convenient to arrange. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the embodiment of the application.

[0021] Figure 2 It is a schematic diagram of the overall structure of the embodiment of the application from another angle.

[0022] Figure 3 It is a schematic diagram of the structure of the cylinder, crankshaft, oil drain, exhaust mechanism, air inlet mechanism, flow distributor, filter box, connecting pipe and porous radiator of the embodiment of the application.

[0023] Figure 4 It is a sectional view of the flow distributor, connecting pipe and porous radiator of the embodiment of the application.

[0024] Figure 5 It is a sectional view of the cylinder, crankshaft, connecting rod, piston, oil drain, elbow pipe and sealing bearing of the embodiment of the application.

[0025] Figure 6 It is a sectional view of the oil drain of the embodiment of the application.

[0026] Figure 7 It is a sectional view of the exhaust mechanism of the embodiment of the application.

[0027] Figure 8 It is a sectional view of the air inlet mechanism of the embodiment of the application.

[0028] List of drawings:

[0029] 1. Cylinder; 2. Crankshaft; 3. Connecting rod; 4. Piston;

[0030] 5. Oil drain; 501. Outer shell; 502. Inner core; 503. First spring;

[0031] 6. Elbow pipe;

[0032] 7. Exhaust mechanism; 701. Exhaust valve body; 702. Horizontal valve core; 703. Second spring;

[0033] 8. Intake mechanism; 801. Intake valve body; 802. Vertical valve core; 803. Third spring;

[0034] 9. Flow divider; 901. Flow divider cover; 902. Flow divider ring;

[0035] 10. Sealed bearing; 11. Filter box;

[0036] 12. Connection pipe; 13. Porous radiator; 14. First transmission wheel; 15. Second transmission wheel; 16. Transmission belt; 17. Driving motor; 18. Fixed frame. DETAILED DESCRIPTION

[0037] The present application will be further clarified by the following examples, which should be considered as merely illustrative of the present application and not limiting thereof.

[0038] Please refer to Figures 1-8The utility model provides an air compressor unit, including cylinder body 1, the top rotation of cylinder body 1 is installed with crankshaft 2. The both ends main journal of crankshaft 2 are coaxially equipped with sealing bearing 10, and sealing bearing 10 is inlaid on the inner wall of cylinder body 1. The connecting rod axle neck of crankshaft 2 is rotatably connected with connecting rod 3, and the lower part of the inner chamber of cylinder body 1 is vertically slidably installed with piston 4, and the end of connecting rod 3 is rotatably connected with piston 4. The bottom of cylinder body 1 is conically protruded downward, and the tip of conical protrusion is installed with the oil discharger 5 linked with piston 4. The bottom of cylinder body 1 is installed with two elbow pipes 6 penetrating through cylinder body 1, wherein one of the elbow pipes 6 is communicated with exhaust mechanism 7 and extends out of the end of cylinder body 1, and the other elbow pipe 6 is communicated with intake mechanism 8 and extends out of the end of cylinder body 1. The elbow of the two elbow pipes 6 in the inner chamber of cylinder body 1 is opened downward. The air inlet of intake mechanism 8 is communicated with flow divider 9, and the lower part of cylinder body 1 is sleeved with porous radiator 13. The porous radiator 13 is provided with a plurality of through holes penetrating from top to bottom, and the air inlet of flow divider 9 partially covers the top opening of each through hole of porous radiator 13. When the air is inhaled by intake mechanism 8 through flow divider 9, the air inlet of flow divider 9 is directed to the through hole of porous radiator 13, so that the air is driven to flow through the through hole of porous radiator 13 while inhaling the air, thereby enhancing the heat dissipation of cylinder body 1.

[0039] One end of crankshaft 2 extends out of cylinder body 1 and is fixedly connected with first transmission wheel 14, first transmission wheel 14 is adapted with transmission belt 16, and transmission belt 16 is also sleeved with second transmission wheel 15. The diameter of first transmission wheel 14 is greater than the diameter of second transmission wheel 15. Second transmission wheel 15 is fixedly connected with driving motor 17, and driving motor 17 is fixedly connected with fixing frame 18 on the top, and the top of cylinder body 1 is fixedly connected with fixing frame 18. Driving motor 17 drives crankshaft 2 to rotate through first transmission wheel 14, second transmission wheel 15 and transmission belt 16, and rotating crankshaft 2 drives piston 4 to make up-and-down reciprocating motion in cylinder body 1 through connecting rod 3.

[0040] The oil drain device 5 comprises an outer shell 501 inlaid in the cylinder 1. An inner core 502 is vertically slidably installed inside the outer shell 501. The inner core 502 is provided with a flow cavity, and the top and bottom of the flow cavity are provided with transverse openings. The outer shell 501 is provided with transverse openings which are slidably matched with the transverse openings of the flow cavity. The outer shell 501 is provided with a through hole which is communicated with the inner cavity of the outer shell 501, and the bottom of the inner core 502 is connected with a first spring 503. The bottom of the flow cavity of the inner core 502 is provided with a tapered upward protrusion, and the oil in the flow cavity flows out through the transverse opening at the bottom of the flow cavity under the diversion of the tapered upward protrusion. The middle part of the inner core 502 is narrowed, and the bottom transverse opening of the flow cavity of the inner core 502 is arranged at the narrowed part. The inner core 502 can move up and down within a certain range in the inner cavity of the outer shell 501. When the inner core 502 moves to the uppermost position, the top transverse opening of the flow cavity of the inner core 502 is aligned with the transverse opening at the top of the outer shell 501, which is beneficial for the oil accumulated at the bottom of the cylinder 1 to flow into the flow cavity, and the bottom transverse opening of the flow cavity is completely misaligned with the transverse opening at the bottom of the outer shell 501. When the inner core 502 moves to the lowermost position, the bottom transverse opening of the flow cavity of the inner core 502 is aligned with the transverse opening at the bottom of the outer shell 501, which is beneficial for the oil in the flow cavity to flow out through the transverse opening at the bottom of the flow cavity, and the top transverse opening of the flow cavity is completely misaligned with the transverse opening at the top of the outer shell 501. At a certain moment when the inner core 502 moves from top to bottom, the top transverse opening of the flow cavity is communicated with the transverse opening at the top of the outer shell 501, and the bottom transverse opening of the flow cavity is communicated with the transverse opening at the bottom of the outer shell 501. Under the scouring of the high-pressure gas flow in the cylinder 1, most of the oil in the flow cavity is instantaneously sprayed out from the bottom.

[0041] When the cylinder 1 inhales, the inner core 502 moves to the uppermost position under the elastic force of the first spring 503 and the external air pressure. When the cylinder 1 exhales, the inner core 502 moves to the lowermost position under the driving of the high-pressure gas in the cylinder 1, and the middle part of the inner core 502 is narrowed, so that the outer shell 501 is closely attached to the inner core 502, thereby enhancing the sealing performance of the inner cavity of the cylinder 1.

[0042] The exhaust mechanism 7 comprises an exhaust valve body 701 which is communicated with the elbow pipe 6 through a horizontal opening. A horizontal valve core 702 is horizontally slidably installed in the inner cavity of the exhaust valve body 701. The tapered end of the horizontal valve core 702 is matched with the opening of the exhaust valve body 701 which faces the elbow pipe 6, and the flat end of the horizontal valve core 702 is connected with a second spring 703. The vertically open extension pipe of the exhaust valve body 701 is provided with external threads, and the vertically open extension pipe is connected with a gas storage mechanism. When the cylinder 1 inhales, the tapered end of the horizontal valve core 702 blocks the opening of the exhaust valve body 701 which faces the elbow pipe 6 under the elastic force of the second spring 703. When the cylinder 1 exhales, the horizontal valve core 702 moves horizontally under the driving of the high-pressure gas in the cylinder 1, and the vertically open extension pipe of the exhaust valve body 701 is communicated with the adjacent elbow pipe 6.

[0043] The air inlet mechanism 8 comprises an air inlet valve body 801 which is communicated with the horizontal opening of the elbow pipe 6. The air inlet valve body 801 is vertically slidably installed with a vertical valve core 802, the tapered end of the vertical valve core 802 is adapted to the vertical opening of the air inlet valve body 801, and the flat end of the vertical valve core 802 is connected with a third spring 803. When the air is sucked in the cylinder body 1, the vertical opening of the air inlet valve body 801 is communicated with the adjacent elbow pipe 6 under the negative pressure in the cylinder body 1; when the air is discharged in the cylinder body 1, the tapered end of the vertical valve core 802 blocks the vertical opening of the air inlet valve body 801 under the high pressure gas in the cylinder body 1 and the driving of the third spring 803.

[0044] The vertical opening of the air inlet valve body 801 is communicated with a filter box 11, and a filter element is arranged in the filter box 11. The filter element is used to filter the fixed impurities in the sucked air. The top of the filter box 11 is communicated with the flow divider 9 through a connecting pipe 12.

[0045] The flow divider 9 comprises a flow divider cover 901 which is opened towards the porous radiator 13. The flow divider cover 901 is inlaid with a flow divider ring 902 which is uniformly provided with a plurality of through holes. The connecting pipe 12 is communicated with the inner cavity of the flow divider cover 901, and the communication is arranged above the flow divider ring 902. The air sucked downwardly by the flow divider cover 901 can flow into the upper part of the flow divider cover 901 through the through holes of the flow divider ring 902, and then flow to the connecting pipe 12, so that the flow divider cover 901 more uniformly sucks the air to all the through holes of the porous radiator 13.

[0046] Working principle:

[0047] When running, the vertical opening of the exhaust valve body 701 is connected with the air storage mechanism, then the driving motor 17 drives the crankshaft 2 to rotate through the first transmission wheel 14, the second transmission wheel 15 and the transmission belt 16, the rotating crankshaft 2 drives the piston 4 to make up-and-down reciprocating motion in the cylinder body 1 through the connecting rod 3, so as to realize the air suction and air discharge in the cylinder body 1;

[0048] When the piston 4 moves upwardly, the air is sucked in the cylinder body 1, the air discharge mechanism 7 is closed, and the air inlet mechanism 8 is opened. At this time, the inner core body 502 moves to the uppermost position, the oil liquid at the bottom of the cylinder body 1 enters the flow cavity, the flow divider 9 sucks the air, and since the air inlet of the flow divider 9 is directed towards the through holes of the porous radiator 13, the flow divider 9 also drives the air to flow through the through holes of the porous radiator 13 while sucking the air, so as to cool the cylinder body 1 (the air compression will continuously release heat, so that the cylinder body 1 is heated, which affects the continuous operation of the unit), the air sucked by the flow divider 9 flows into the filter box 11 through the connecting pipe 12 to remove the fixed impurities, and then the air is sucked into the cylinder body 1 through the air inlet mechanism 8;

[0049] When the piston 4 moves downward, the cylinder 1 is exhausted, the air intake mechanism 8 is closed, the exhaust mechanism 7 is opened, the high-pressure gas in the cylinder 1 enters the gas storage mechanism through the exhaust mechanism 7, and the inner core body 502 moves from top to bottom at the same time that the piston 4 moves downward; at a certain moment of the movement of the inner core body 502, the top transverse opening of the flow cavity is communicated with the top transverse opening of the outer shell body 501, and the bottom transverse opening of the flow cavity is communicated with the bottom transverse opening of the outer shell body 501; under the scouring of the high-pressure gas flow in the cylinder 1, most of the oil liquid in the flow cavity is instantaneously sprayed out from the bottom (part of the oil liquid at the bottom of the cylinder 1 is also sprayed out), and finally the inner core body 502 moves to the lowermost position, the bottom transverse opening of the flow cavity is aligned with the bottom transverse opening of the outer shell body 501, the oil liquid in the flow cavity is beneficial to flow out through the bottom transverse opening of the flow cavity, and the top transverse opening of the flow cavity is completely misaligned with the top transverse opening of the outer shell body 501.

[0050] It should be noted that the above content only illustrates the technical idea of the present application, and cannot limit the protection scope of the present application; for ordinary skilled persons in the technical field, under the premise of not departing from the principle of the present application, a number of improvements and refinements can be made, which fall within the protection scope of the claims of the present application.

Claims

1. An air compressor unit comprising a cylinder (1), characterized in that, The top of the cylinder (1) is rotatably installed with a crankshaft (2), the connecting rod shaft journal of the crankshaft (2) is rotatably connected with a connecting rod (3), the lower part of the inner cavity of the cylinder (1) is vertically slidably installed with a piston (4), and the piston (4) is rotatably connected with the end of the connecting rod (3), the bottom of the cylinder (1) is downwardly conically protruded, and the tip of the conical protrusion is installed with an oil discharger (5) linked with the piston (4), the bottom of the cylinder (1) is installed with two elbow pipes (6) penetrating through the cylinder (1), one of the elbow pipes (6) is communicated with an exhaust mechanism (7) extending out of the end of the cylinder (1), the other elbow pipe (6) is communicated with an air intake mechanism (8) extending out of the end of the cylinder (1), the air inlet of the air intake mechanism (8) is communicated with a flow divider (9), the lower part of the cylinder (1) is externally provided with a porous radiator (13), the porous radiator (13) is provided with a plurality of through holes penetrating upward and downward, and the air inlet of the flow divider (9) partially covers the top opening of each through hole of the porous radiator (13). The air intake mechanism (8) comprises: an air intake valve body (801) horizontally opened and communicated with the elbow pipe (6), the air intake valve body (801) is vertically slidably installed with a vertical valve core (802), the tapered end of the vertical valve core (802) is adapted to the vertical opening of the air intake valve body (801), and the flat end of the vertical valve core (802) is connected with a third spring (803). The vertical opening of the air intake valve body (801) is communicated with a filter box (11), and a filter element is arranged in the filter box (11), the top of the filter box (11) is communicated with the flow divider (9) through a connecting pipe (12); The flow divider (9) comprises: a flow divider cover (901) with openings facing the porous radiator (13), the flow divider cover (901) is inlaid with a flow divider ring (902) uniformly provided with a plurality of through holes, the connecting pipe (12) is communicated with the inner cavity of the flow divider cover (901), and the communication portion is arranged above the flow divider ring (902).

2. An air compressor unit as claimed in claim 1, wherein The both ends of the crankshaft (2) are coaxially provided with sealing bearings (10), and the sealing bearings (10) are inlaid on the inner wall of the cylinder (1).

3. An air compressor unit as claimed in claim 1, wherein, The oil discharger (5) comprises: an outer shell (501) inlaid in the cylinder (1), an inner core body (502) vertically slidably installed in the outer shell (501), a flow cavity is formed in the inner core body (502), and transverse openings are formed at the top and bottom of the flow cavity, the outer shell (501) is provided with a transverse opening slidably matched with the transverse opening of the flow cavity, a through hole is formed in the top of the outer shell (501) and communicated with the inner cavity thereof, and the bottom of the inner core body (502) is connected with a first spring (503).

4. An air compressor unit as claimed in claim 3, wherein The bottom of the flow cavity of the inner core body (502) is conically upwardly protruded, the middle part of the inner core body (502) is narrowed, and the bottom transverse opening of the flow cavity is arranged at the narrowed portion.

5. An air compressor unit as claimed in claim 1, wherein, The exhaust mechanism (7) comprises an exhaust valve body (701) in communication with the horizontal opening and the elbow pipe (6), a horizontal valve core (702) is slidably arranged in the inner cavity of the exhaust valve body (701), the tapered end of the horizontal valve core (702) is adapted to the opening of the exhaust valve body (701) towards the elbow pipe (6), the flat end of the horizontal valve core (702) is connected with a second spring (703), and the vertical opening extension pipe of the exhaust valve body (701) is provided with external threads.

6. An air compressor unit as claimed in claim 1, wherein, The openings of the elbows of the two elbow pipes (6) in the inner cavity of the cylinder body (1) are all downward.

7. An air compressor unit as claimed in claim 1, wherein, One end of the crankshaft (2) protrudes out of the cylinder body (1) and is coaxially fixedly connected with a first transmission wheel (14), the first transmission wheel (14) is adapted with a transmission belt (16), the transmission belt (16) is simultaneously sleeved with a second transmission wheel (15), the second transmission wheel (15) is coaxially fixedly connected with a driving motor (17), the top of the driving motor (17) is fixedly connected with a fixing frame (18), and the top of the cylinder body (1) is fixedly connected with the fixing frame (18).

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