Air compressor unit

Abstract

The invention discloses an air compressor unit, and particularly relates to the technical field of compressors, the air compressor unit comprises a cylinder body, a crankshaft is rotatably mounted at the top of the cylinder body, a connecting rod journal of the crankshaft is rotatably connected with a connecting rod, a piston is vertically and slidably mounted at the lower part of an inner cavity of the cylinder body, and the piston is rotatably connected with the end part of the connecting rod; an oil discharging device in linkage with the piston is installed at the bottom of the cylinder body, two elbow pipes penetrating through the cylinder body are installed at the bottom of the cylinder body, the end, extending out of the cylinder body, of one elbow pipe is communicated with an exhaust mechanism, the end, extending out of the cylinder body, of the other elbow pipe is communicated with an air inlet mechanism, and an air inlet of the air inlet mechanism is communicated with a flow divider. The lower portion of the cylinder body is sleeved with a porous radiator, the porous radiator is provided with a plurality of through holes penetrating up and down, an air inlet of the flow divider partially covers a top opening of each through hole of the porous radiator, the air compressor unit can intermittently discharge oil accumulated in the air compressor unit, and operation of the air compressor unit is not affected by the oil.

Description

Technical Field

[0001] The invention belongs to the technical field of compressors, and in particular relates to an air compressor unit. Background Art

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

[0003] Since the air contains a small amount of gaseous organic matter, the air compressor will liquefy some of the gaseous organic matter into oil when compressing the air. After long-term use, a lot of oil will accumulate inside the air compressor, affecting the normal operation of the air compressor. Existing air compressors are either equipped with complex filtering devices to pre-filter organic matter in the air; or oil-gas separation devices are installed on the exhaust side of the air compressor, which increases the size of the air compressor and is not convenient for installing the air compressor in a small space.

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

[0005] In order to solve the above problems, the present invention discloses an air compressor unit.

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

[0007] An air compressor unit comprises a cylinder body, a crankshaft is rotatably mounted on the top of the cylinder body, a connecting rod is rotatably connected to the connecting rod journal of the crankshaft, a piston is vertically slidably mounted on the lower part of the inner cavity of the cylinder body, and the piston is rotatably connected to the end of the connecting rod, the bottom of the cylinder body protrudes downward in a cone, and the tip of the cone protrusion is installed with an oil drainer linked to the piston, two elbow pipes penetrating the cylinder body are installed at the bottom of the cylinder body, one of the elbow pipes extending out of the cylinder body is connected to an exhaust mechanism, and the other elbow pipe extending out of the cylinder body is connected to an intake mechanism, the air inlet of the intake mechanism is connected to a diverter, and a porous radiator is provided on the lower outer cover of the cylinder body, the porous radiator is provided with a plurality of through holes penetrating up and down, and the air inlet of the diverter partially covers the top opening of each through hole of the porous radiator.

[0008] As a preferred technical solution of the present invention, both main journals at both ends of the crankshaft are coaxially sleeved with sealed bearings, and the sealed bearings are embedded on the inner wall of the cylinder body.

[0009] As a preferred technical solution of the present invention, the oil drainer includes: an outer shell embedded in the cylinder body, an inner core body vertically slidably installed inside the outer shell, a flow cavity is opened in the inner core body, and transverse openings are arranged at the top and bottom of the flow cavity, the outer shell is provided with a transverse opening slidingly adapted to the transverse opening of the flow cavity, a through hole communicating with the inner cavity is opened at the top of the outer shell, and a first spring is connected to the bottom of the inner core body.

[0010] As a preferred technical solution of the present invention, the bottom of the flow cavity of the inner core is provided with a conical upward protrusion, the middle part of the inner core is narrowed, and the bottom lateral opening of the flow cavity is provided at the narrowed part.

[0011] As a preferred technical solution of the present invention, the exhaust mechanism includes: an exhaust valve body with a horizontal opening connected to the elbow pipe, a horizontal valve core is horizontally slidably installed in the inner cavity of the exhaust valve body, the conical head end of the horizontal valve core is adapted to the opening of the exhaust valve body toward the elbow pipe, and the flat head end of the horizontal valve core is connected to a second spring, and the vertical opening extension tube of the exhaust valve body is provided with an external thread.

[0012] As a preferred technical solution of the present invention, the air intake mechanism includes: an air intake valve body with a horizontal opening connected to the elbow pipe, the air intake valve body is vertically slidably mounted with a vertical valve core, the conical head end of the vertical valve core is adapted to the vertical opening of the air intake valve body, and the flat head end of the vertical valve core is connected to a third spring.

[0013] As a preferred technical solution of the present invention, the vertical opening of the air intake valve body is connected to a filter box, and a filter element is arranged in the filter box, and the top of the filter box is connected to the diverter through a connecting pipe.

[0014] As a preferred technical solution of the present invention, the diverter includes: a diverter cover with an opening toward the porous radiator, a diverter ring with a plurality of through holes evenly opened therein is embedded in the diverter cover, the connecting pipe is connected to the inner cavity of the diverter cover, and the connection point is arranged above the diverter ring.

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

[0016] As a preferred technical solution of the present invention, one end of the crankshaft extends out of the cylinder body and is coaxially fixedly connected to a first transmission wheel, the first transmission wheel is adapted to be equipped with a transmission belt, and the transmission belt is simultaneously sleeved with a second transmission wheel, the second transmission wheel is coaxially fixedly connected to a drive motor, the top of the drive motor is fixedly connected to a fixed frame, and the top of the cylinder body is fixedly connected to the fixed frame.

[0017] The beneficial effects of the present invention are:

[0018] 1. When the cylinder body inhales air, the diverter inhales air. Since the air inlet of the diverter faces the porous radiator through-hole, the diverter also drives the air to flow through the porous radiator through-hole while inhaling air, so as to dissipate heat from the cylinder body. Then the air is inhaled into the cylinder body through the air intake mechanism. Thanks to the diverter and the porous radiator dissipating heat from the cylinder body during air inhalation, the air compressor unit can continuously compress the air without overheating and operate stably.

[0019] 2. When the piston moves upward, under the elastic force of the first spring and the external air pressure, the inner core moves to the uppermost part, and the oil at the bottom of the cylinder body enters the flow chamber. When the piston moves downward, the inner core moves from top to bottom. At a certain moment of the movement of the inner core body, the top transverse opening of the flow chamber is connected with the transverse opening at the top of the outer shell, and the bottom transverse opening of the flow chamber is connected with the transverse opening at the bottom of the outer shell. Under the flushing of the high-pressure airflow in the cylinder body, most of the oil in the flow chamber is instantly sprayed out from the bottom. Finally, the inner core body moves to the lowest part, and the bottom transverse opening of its flow chamber is aligned with the transverse opening at the bottom of the outer shell, which is conducive to the oil in the flow chamber to flow out through the transverse opening at the bottom of the flow chamber, and the top transverse opening of the flow chamber is completely staggered with the transverse opening of the top of the outer shell. Under the reciprocating operation of the piston, the oil accumulated at the bottom of the inner chamber of the cylinder body 1 is intermittently discharged, so that the oil does not affect the continuous operation of the air compressor unit. At the same time, the overall structure of the air compressor unit is compact and easy to arrange. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0021] Figure 2 It is a schematic diagram of the overall structure of another angle of an embodiment of the present invention;

[0022] Figure 3 It is a schematic diagram of the structure of a cylinder block, a crankshaft, an oil drainer, an exhaust mechanism, an air intake mechanism, a flow divider, a filter box, a connecting pipe and a porous radiator according to an embodiment of the present invention;

[0023] Figure 4 A cross-sectional view of a flow divider, a connecting pipe and a porous radiator according to an embodiment of the present invention;

[0024] Figure 5 It is a cross-sectional view of a cylinder block, a crankshaft, a connecting rod, a piston, an oil drain, an elbow pipe and a sealed bearing according to an embodiment of the present invention;

[0025] Figure 6 A cross-sectional view of an oil drainer according to an embodiment of the present invention;

[0026] Figure 7 is a cross-sectional view of an exhaust mechanism according to an embodiment of the present invention;

[0027] Figure 8 It is a cross-sectional view of the air intake mechanism according to an embodiment of the present invention.

[0028] List of Figure Symbols:

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

[0030] 5. Oil drainer; 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. Connecting 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 invention will be further explained below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0038] See also Figure 1-8An air compressor unit includes a cylinder body 1, and a crankshaft 2 is rotatably mounted on the top of the cylinder body 1. The main journals at both ends of the crankshaft 2 are coaxially sleeved with sealed bearings 10, and the sealed bearings 10 are embedded on the inner wall of the cylinder body 1. The connecting rod journal of the crankshaft 2 is rotatably connected with a connecting rod 3, and a piston 4 is vertically slidably mounted on the lower part of the inner cavity of the cylinder body 1, and the piston 4 is rotatably connected to the end of the connecting rod 3. The bottom of the cylinder body 1 is conically protruded downward, and the tip of the conical protrusion is installed with an oil drainer 5 linked to the piston 4. Two elbow pipes 6 that penetrate the cylinder body 1 are installed at the bottom of the cylinder body 1, one of the elbow pipes 6 extending out of the cylinder body 1 is connected to an exhaust mechanism 7, and the other elbow pipe 6 extending out of the cylinder body 1 is connected to an intake mechanism 8. The elbows of the two elbow pipes 6 in the inner cavity of the cylinder body 1 are both opened downward. The air inlet of the intake mechanism 8 is connected to a diverter 9, and a porous radiator 13 is provided on the lower outer cover of the cylinder body 1. The porous radiator 13 is provided with a plurality of through holes extending vertically therethrough, and the air inlet of the diverter 9 partially covers the top opening of each through hole of the porous radiator 13. The air intake mechanism 8 inhales air through the diverter 9 during air intake. Since the air inlet of the diverter 9 faces the through holes of the porous radiator 13, the diverter 9 also drives the air to flow through the through holes of the porous radiator 13 while inhaling air, thereby enhancing the heat dissipation of the cylinder body 1.

[0039] One end of the crankshaft 2 extends out of the cylinder body 1 and is coaxially fixedly connected to a first transmission wheel 14. The first transmission wheel 14 is adapted to be equipped with a transmission belt 16, and the transmission belt 16 is also sleeved with a second transmission wheel 15. The diameter of the first transmission wheel 14 is larger than the diameter of the second transmission wheel 15. The second transmission wheel 15 is coaxially fixedly connected to a driving motor 17. The top of the driving motor 17 is fixedly connected to a fixing frame 18, and the top of the cylinder body 1 is fixedly connected to the fixing frame 18. 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 reciprocate up and down in the cylinder body 1 through the connecting rod 3.

[0040] The oil drainer 5 includes: an outer shell 501 embedded in the cylinder body 1. An inner core 502 is vertically slidably installed inside the outer shell 501. A flow cavity is provided in the inner core 502, and transverse openings are provided at the top and bottom of the flow cavity. The outer shell 501 is provided with a transverse opening that is slidably adapted to the transverse opening of the flow cavity. A through hole communicating with its inner cavity is provided at the top of the outer shell 501, and a first spring 503 is connected to the bottom of the inner core 502. A conical upward protrusion is provided at the bottom of the flow cavity of the inner core 502, and under the diversion of the conical upward protrusion, the oil in the flow cavity flows out through the transverse opening at the bottom of the flow cavity. The inner core 502 is narrowed in the middle, and the transverse opening at the bottom of its flow cavity is provided at the narrowed position. 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 top, the top transverse opening of its flow cavity is aligned with the transverse opening at the top of the outer shell 501, which is conducive to the oil accumulated at the bottom of the cylinder 1 flowing into the flow cavity, and the bottom transverse opening of the flow cavity is completely staggered with the horizontal direction of the bottom of the outer shell 501; when the inner core 502 moves to the bottom, the bottom transverse opening of its flow cavity is aligned with the transverse opening at the bottom of the outer shell 501, which is conducive to the oil in the flow cavity flowing out through the transverse opening at the bottom of the flow cavity, and the top transverse opening of the flow cavity is completely staggered with the horizontal direction of 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 connected with the transverse opening at the top of the outer shell 501, and the bottom transverse opening of the flow cavity is connected with the transverse opening at the bottom of the outer shell 501. Under the flushing of the high-pressure airflow in the cylinder 1, most of the oil in the flow cavity is instantly sprayed out from the bottom.

[0041] When air is inhaled in the cylinder body 1, the inner core body 502 moves to the top under the elastic force of the first spring 503 and the external air pressure; when air is exhausted in the cylinder body 1, the inner core body 502 moves to the bottom driven by the high-pressure gas in the cylinder body 1, and since the middle part of the inner core body 502 is narrowed, the outer shell 501 and the inner core body 502 are directly and tightly fitted, so that the inner cavity of the cylinder body 1 is more tightly sealed to the outside.

[0042] The exhaust mechanism 7 includes: an exhaust valve body 701 whose horizontal opening is connected to the elbow pipe 6. A horizontal valve core 702 is installed in the inner cavity of the exhaust valve body 701 for horizontal sliding. The conical head end of the horizontal valve core 702 is adapted to the opening of the exhaust valve body 701 facing the elbow pipe 6, and the flat head end of the horizontal valve core 702 is connected to the second spring 703. The vertical opening extension pipe of the exhaust valve body 701 is provided with an external thread, and the vertical opening extension pipe is connected to the gas storage mechanism. When the cylinder body 1 is inhaled, under the elastic force of the second spring 703, the conical head end of the horizontal valve core 702 blocks the opening of the exhaust valve body 701 facing the elbow pipe 6; when the cylinder body 1 is exhausted, the horizontal valve core 702 moves horizontally under the drive of the high-pressure gas in the cylinder body 1, and the vertical opening of the exhaust valve body 701 is connected to the adjacent elbow pipe 6.

[0043] The air intake mechanism 8 includes: an air intake valve body 801 whose horizontal opening is connected to the elbow pipe 6. A vertical valve core 802 is vertically slidably mounted on the air intake valve body 801, and the cone head end of the vertical valve core 802 is adapted to the vertical opening of the air intake valve body 801, and the flat head end of the vertical valve core 802 is connected to the third spring 803. When the cylinder body 1 inhales air, under the negative pressure in the cylinder body 1, the vertical opening of the air intake valve body 801 is connected to the adjacent elbow pipe 6; when the cylinder body 1 is exhausted, under the drive of the high-pressure gas in the cylinder body 1 and the third spring 803, the cone head end of the vertical valve core 802 blocks the vertical opening of the air intake valve body 801.

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

[0045] The flow divider 9 includes: a flow divider cover 901 with an opening toward the porous heat sink 13. A flow divider ring 902 with a plurality of through holes evenly opened is embedded in the flow divider cover 901. The connecting pipe 12 is connected to the inner cavity of the flow divider cover 901, and the connection point is arranged above the flow divider ring 902. The air sucked in by the downward opening of the flow divider cover 901 can flow into the top 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 can relatively evenly suck air into all the through holes of the porous heat sink 13.

[0046] Working principle:

[0047] During operation, the vertical opening extension pipe of the exhaust valve body 701 is connected to the gas storage mechanism, and 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 reciprocate up and down in the cylinder body 1 through the connecting rod 3, so as to realize the suction and exhaust in the cylinder body 1;

[0048] When the piston 4 moves upward, air is sucked into the cylinder 1, the exhaust mechanism 7 is closed, and the intake mechanism 8 is opened. At this time, the inner core 502 moves to the top, and the oil at the bottom of the cylinder 1 enters the flow cavity. The diverter 9 sucks in air. Since the air inlet of the diverter 9 faces the through hole of the porous radiator 13, the diverter 9 also drives the air to flow through the through hole of the porous radiator 13 while sucking in air, so as to dissipate the heat of the cylinder 1 (heat is continuously released when the air is compressed, causing the cylinder 1 to heat up, affecting the continuous operation of the unit). The air sucked in by the diverter 9 flows into the filter box 11 through the connecting pipe 12 to remove fixed impurities, and then the air is sucked into the cylinder 1 through the intake mechanism 8;

[0049] When the piston 4 moves downward, the cylinder 1 is exhausted, the air intake mechanism 8 is closed, and the exhaust mechanism 7 is opened. The high-pressure gas in the cylinder 1 enters the air storage mechanism through the exhaust mechanism 7. When the piston 4 moves downward, the inner core 502 moves from top to bottom. At a certain moment when the inner core 502 moves, the top lateral opening of the flow chamber is connected with the lateral opening at the top of the outer shell 501, and the bottom lateral opening of the flow chamber is connected with the lateral opening at the bottom of the outer shell 501. Under the flushing of the high-pressure airflow in the cylinder 1, most of the oil in the flow chamber is instantly ejected from the bottom (part of the oil at the bottom of the cylinder 1 is also ejected together). Finally, the inner core 502 moves to the bottom, and the bottom lateral opening of its flow chamber is aligned with the bottom lateral opening of the outer shell 501, which is conducive to the oil in the flow chamber to flow out through the lateral opening at the bottom of the flow chamber, and the top lateral opening of the flow chamber is completely staggered from the top of the outer shell 501.

[0050] It should be noted that the above content only illustrates the technical idea of ​​the present invention and cannot be used to limit the protection scope of the present invention. For ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications all fall within the protection scope of the claims of the present invention.

Claims

1. An air compressor unit, comprising a cylinder body (1), characterized in that: A crankshaft (2) is rotatably mounted on the top of the cylinder body (1), a connecting rod (3) is rotatably connected to the connecting rod journal of the crankshaft (2), a piston (4) is vertically slidably mounted on the lower part of the inner cavity of the cylinder body (1), and the piston (4) is rotatably connected to the end of the connecting rod (3), the bottom of the cylinder body (1) is conically protruded downward, and an oil discharger (5) linked to the piston (4) is installed at the tip of the conical protrusion, and two elbow pipes (6) penetrating the cylinder body (1) are installed at the bottom of the cylinder body (1), one of which is The end of the elbow pipe (6) extending out of the cylinder body (1) is connected to an exhaust mechanism (7), and the end of the other elbow pipe (6) extending out of the cylinder body (1) is connected to an intake mechanism (8), and the air inlet of the intake mechanism (8) is connected to a diverter (9). A porous heat sink (13) is provided on the lower outer cover of the cylinder body (1), and the porous heat sink (13) is provided with a plurality of through holes extending upward and downward, and the air inlet of the diverter (9) partially covers the top opening of each through hole of the porous heat sink (13).

2. An air compressor unit according to claim 1, characterized in that: The main journals at both ends of the crankshaft (2) are coaxially sleeved with sealed bearings (10), and the sealed bearings (10) are embedded on the inner wall of the cylinder body (1).

3. An air compressor unit according to claim 1, characterized in that: The oil discharger (5) comprises: an outer shell (501) embedded in the cylinder body (1); an inner core (502) vertically slidably mounted inside the outer shell (501); a flow cavity is provided inside the inner core (502); and the top and bottom of the flow cavity are both provided with transverse openings; the outer shell (501) is provided with a transverse opening that is slidably matched with the transverse opening of the flow cavity; a through hole that communicates with the inner cavity is provided at the top of the outer shell (501); and a first spring (503) is connected to the bottom of the inner core (502).

4. An air compressor unit according to claim 3, characterized in that: The bottom of the flow cavity of the inner core (502) is provided with a conical upward protrusion, the middle part of the inner core (502) is narrowed, and the bottom lateral opening of the flow cavity is arranged at the narrowed part.

5. An air compressor unit according to claim 1, characterized in that: The exhaust mechanism (7) comprises: an exhaust valve body (701) whose horizontal opening is connected to the elbow pipe (6); a horizontal valve core (702) is horizontally slidably mounted in the inner cavity of the exhaust valve body (701); the conical head end of the horizontal valve core (702) is adapted to the opening of the exhaust valve body (701) facing the elbow pipe (6), and the flat head end of the horizontal valve core (702) is connected to a second spring (703); and the vertical opening extension pipe of the exhaust valve body (701) is provided with an external thread.

6. An air compressor unit according to claim 1, characterized in that: The air intake mechanism (8) comprises: an air intake valve body (801) whose horizontal opening is connected to the elbow pipe (6); a vertical valve core (802) is vertically slidably mounted on the air intake valve body (801); the conical head end of the vertical valve core (802) is adapted to the vertical opening of the air intake valve body (801); and the flat head end of the vertical valve core (802) is connected to a third spring (803).

7. An air compressor unit according to claim 6, characterized in that: The vertical opening of the air intake valve body (801) is connected to a filter box (11), and a filter element is arranged in the filter box (11). The top of the filter box (11) is connected to the diverter (9) through a connecting pipe (12).

8. An air compressor unit according to claim 7, characterized in that: The flow divider (9) comprises: a flow divider cover (901) with an opening facing the porous heat sink (13); a flow divider ring (902) evenly provided with a plurality of through holes is embedded in the flow divider cover (901); the connecting pipe (12) is connected to the inner cavity of the flow divider cover (901), and the connection point is arranged above the flow divider ring (902).

9. An air compressor unit according to claim 1, characterized in that: The elbows of the two elbow pipes (6) in the inner cavity of the cylinder body (1) are both opened downward.

10. An air compressor unit according to claim 1, characterized in that: One end of the crankshaft (2) extends out of the cylinder body (1) and is coaxially fixedly connected to a first transmission wheel (14); the first transmission wheel (14) is adapted to be equipped with a transmission belt (16), and the transmission belt (16) is also sleeved with a second transmission wheel (15); the second transmission wheel (15) is coaxially fixedly connected to a drive motor (17); the top of the drive motor (17) is fixedly connected to a fixing frame (18), and the top of the cylinder body (1) is fixedly connected to the fixing frame (18).

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