Air inlet device of piston type air compressor

Abstract

The utility model relates to the technical field of air compressors, and discloses a piston type air compressor air inlet device which comprises a base, an air inlet pipe is fixedly connected to the top of the base, and a piston sleeve is connected to the interior of the air inlet pipe in a sliding mode. According to the air inlet device of the piston type air compressor, when the cam rotates, the crank can be driven to swing through the V-shaped connecting rod, the eccentric disc can be driven to rotate by rotating the rotary knob, and the swing amplitude of the crank can be changed due to the eccentric principle, so that the swing amplitude of the V-shaped connecting rod and the connecting rod is changed, and then the stroke of the piston sleeve in the air inlet pipe is changed; when the arrow of the rotary knob is located on the lower portion, the amount of air entering at a time is minimum, otherwise, the amount of air entering at a time is maximum, the arrangement of the structure provides control capacity for air entering and exhausting, the stroke of the piston sleeve in the air inlet pipe of the internal device can be changed by rotating the position of the rotary knob, and therefore the amount of air entering at a time is changed. Therefore, the output capacity and pressure of the air compressor can be adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of air compressors, in particular to an air intake device for a piston type air compressor. Background Art

[0002] A piston air compressor is a common compressed air equipment. It compresses the air and pushes it into a gas tank or other system through the reciprocating motion of the piston. It is a mechanical air compressor widely used in industry, construction, manufacturing and other fields. When the piston moves downward, the intake valve opens to allow fresh air to enter the cylinder. Then, when the piston moves upward, the intake valve closes to prevent air backflow and compress the intake air. This reciprocating motion enables the piston to continuously compress the air and push it into a gas tank or other system.

[0003] According to a piston air compressor noise reduction and heat dissipation device disclosed with application number 202222712284.X, the air compressor is wrapped with an outer cover, ventilation grooves are opened on the outer cover around the air compressor, and an axial flow fan is used to force exhaust and heat dissipation, so that the air compressor is always in a slightly negative pressure environment and maintains a good working condition; rubber pads are used on the connecting surface of the outer cover to reduce noise and ensure a good environment.

[0004] However, the following problems still exist in actual use:

[0005] (1) The piston air compressor in the above-mentioned literature cannot control and adjust the amount of air entering at one time. Different application scenarios have different requirements for air supply. If the amount of air entering at one time cannot be controlled, it will be impossible to adapt to changes in demand. The lack of the ability to control the amount of air entering at one time will limit the flexibility and adaptability of the air compressor.

[0006] (2) In order to ensure the quality of air entering the air compressor, an air filtering device is usually installed at the position of the air inlet pipe. When the existing filtering device is not convenient for installation and maintenance, maintenance personnel need to spend more time and energy to replace or clean the filter, which increases the maintenance cost and maintenance cycle.

[0007] For this purpose, the utility model introduces an air intake device for a piston type air compressor. Utility Model Content

[0008] In view of the shortcomings of the prior art, the utility model provides an air intake device for a piston type air compressor, which has the advantages of being able to adjust the output capacity and pressure of the air compressor according to actual needs, facilitating the installation and replacement of the filter, and ensuring the air filtration effect, thereby solving the problems raised in the background technology.

[0009] The utility model provides the following technical solution: an air intake device for a piston type air compressor, comprising a base, the top of the base is fixedly connected with an air intake pipe, the interior of the air intake pipe is slidably connected with a piston sleeve, the bottom end of the piston sleeve is sleeved with a connecting rod, an air intake amount adjusting mechanism is arranged inside the base, the air intake amount adjusting mechanism comprises a cam, a V-shaped connecting rod, a crank and an eccentric disk, one end of the cam is rotatably connected to the inner wall of the base, the bottom end of the V-shaped connecting rod is rotatably connected to one end of the cam, one end of the V-shaped connecting rod is rotatably connected to the bottom end of the connecting rod, both ends of the eccentric disk are rotatably connected to the interior of the base, one end of the crank is sleeved on the surface of the eccentric disk, and the other end of the crank is rotatably connected to an end of the V-shaped connecting rod away from the connecting rod.

[0010] Preferably, an extension pipe is fixedly connected to the top of the air intake pipe, a groove is provided on the surface of the extension pipe, and a convenient installation mechanism is provided inside the extension pipe, the convenient installation mechanism includes a receiving groove, a butt block, a sleeve ring and a filter screen, the receiving groove is provided inside the extension pipe, the receiving groove is communicated with the groove, the filter screen is located inside the extension pipe, the surface of the sleeve ring is slidingly connected to the inside of the groove, one end of the butt block is rotatably connected to the surface of the sleeve ring, the other end of the butt block abuts against the surface of the filter screen, and the surface of the butt block is slidingly connected to the inside of the receiving groove.

[0011] Preferably, a driving motor is fixedly connected to one side surface of the base, and an output shaft of the driving motor is fixedly connected to one end of a group of cams. The driving motor provides rotational power to the cams, thereby driving the piston sleeve to move.

[0012] Preferably, a knob is rotatably connected to one side surface of the base, and one end of the knob passes through the base and is fixedly connected to one end of the eccentric disk.

[0013] Preferably, an intake valve is fixedly connected to the top of the intake pipe, an exhaust valve and an exhaust pipe are fixedly connected to the top surface of the intake pipe, and one end of the exhaust valve is located inside the exhaust pipe.

[0014] Preferably, a boss is fixedly connected to the inside of the extension tube, and one side surface of the boss abuts against one side surface of the filter. By providing the boss, the filter can be placed on the boss, and then the filter can be clamped in the middle by the abutment block and the boss to complete the installation, and the filter can be conveniently placed inside the extension tube through the boss.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. The air intake device of the piston type air compressor is provided with an air intake amount adjustment mechanism. The driving motor is started to drive the cam to rotate. The piston sleeve is driven to move up and down inside the intake pipe through the action of the V-type connecting rod and the connecting rod. When the piston sleeve moves downward, the intake valve is driven to open, thereby introducing air into the intake pipe. Then, when the piston sleeve moves upward, the intake valve is closed, and the exhaust valve is opened, thereby exhausting air into the exhaust pipe. When the cam rotates, the crank is driven to swing through the V-type connecting rod, and the eccentric disk can be driven to rotate by rotating the knob. The centrifugal principle will change the swing amplitude of the crank, thereby changing the swing amplitude of the V-type connecting rod and the connecting rod, and then changing the stroke of the piston sleeve in the intake pipe. When the arrow of the knob is at the bottom, the amount of air entering at a single time is the smallest, and when the arrow is at the top, the amount of air entering at a single time is the largest. The setting of this structure provides the ability to control the entry and exhaust of air. By rotating the position of the component knob, the stroke of the piston sleeve in the intake pipe of the internal device can be changed, thereby changing the amount of air entering at a single time. This can adjust the output capacity and pressure of the air compressor according to actual needs.

[0017] 2. The air intake device of this piston type air compressor is provided with a convenient installation mechanism. Before the air enters the intake pipe, it will pass through the filter screen inside the extension pipe. The filter screen can intercept dust and tiny particles to ensure the quality of the incoming air. The filter screen needs to be replaced after long-term use. At this time, the sleeve ring is rotated, and the sleeve ring will drive the abutment block to rotate, so that the abutment block enters the interior of the storage groove. At this time, the filter screen can be taken out and replaced, and the filter screen is placed on the boss. Then, the sleeve ring is rotated in the opposite direction, which will drive the abutment block to move inside the storage groove. When the abutment block abuts against the inner wall of the storage groove, it will move out of the storage groove. At this time, one end of the abutment block will abut against the surface of the filter screen, thereby forming a clamping fixation for the filter screen with the boss. The setting of this structure can fix the filter screen by simply rotating the sleeve ring. The operation is simple and convenient, and maintenance is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the knob structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the cross-sectional structure of the base of the utility model;

[0021] Figure 4 It is a schematic diagram of the cross-sectional structure of the extension tube of the utility model.

[0022] In the figure: 1. base; 2. drive motor; 3. intake pipe; 4. exhaust pipe; 5. extension pipe; 6. filter screen; 7. abutment block; 8. sleeve ring; 9. exhaust valve; 10. knob; 11. groove; 12. piston sleeve; 13. connecting rod; 14. V-type connecting rod; 15. cam; 16. eccentric disk; 17. crank; 18. intake valve; 19. storage groove; 20. boss; 21. intake volume adjustment mechanism; 22. easy installation mechanism. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-4A piston air compressor air intake device includes a base 1, the top of the base 1 is fixedly connected to an air intake pipe 3, the interior of the air intake pipe 3 is slidably connected to a piston sleeve 12, the bottom end of the piston sleeve 12 is sleeved with a connecting rod 13, an air intake amount adjustment mechanism 21 is arranged inside the base 1, and the air intake amount adjustment mechanism 21 includes a cam 15, a V-shaped connecting rod 14, a crank 17 and an eccentric disk 16, one end of the cam 15 is rotatably connected to the inner wall of the base 1, the bottom end of the V-shaped connecting rod 14 is rotatably connected to one end of the cam 15, and one end of the V-shaped connecting rod 14 is rotatably connected to the bottom end of the connecting rod 13. The two ends of the eccentric disk 16 are rotatably connected with the inside of the base 1, one end of the crank 17 is sleeved on the surface of the eccentric disk 16, and the other end of the crank 17 is rotatably connected with the end of the V-shaped connecting rod 14 away from the connecting rod 13. A knob 10 is rotatably connected to the surface of one side of the base 1, and one end of the knob 10 passes through the base 1 and is fixedly connected to one end of the eccentric disk 16. An intake valve 18 is fixedly connected to the top of the intake pipe 3, and an exhaust valve 9 and an exhaust pipe 4 are fixedly connected to the top surface of the intake pipe 3. One end of the exhaust valve 9 is located inside the exhaust pipe 4. When the cam 15 rotates, the exhaust valve 9 is fixedly connected to the exhaust pipe 4. The piston sleeve 12 is driven to move up and down inside the intake pipe 3 through the action of the V-shaped connecting rod 14 and the connecting rod 13. When the piston sleeve 12 moves downward, the intake valve 18 is driven to open, thereby introducing air into the intake pipe 3. Then, when the piston sleeve 12 moves upward, the intake valve 18 is closed, and the exhaust valve 9 is opened, thereby exhausting air into the exhaust pipe 4. When the cam 15 rotates, the crank 17 is driven to swing through the V-shaped connecting rod 14, and the eccentric disk 16 can be driven to rotate by rotating the knob 10. Due to the eccentric principle, the swing amplitude of the crank 17 will change. , thereby changing the swing amplitude of the V-type connecting rod 14 and the connecting rod 13, and then changing the stroke of the piston sleeve 12 in the intake pipe 3. When the arrow of the knob 10 is located at the bottom, the amount of air entering at a single time is the smallest, and when the arrow is located at the top, the amount of air entering at a single time is the largest. The setting of this structure provides the ability to control the entry and exhaust of air. By rotating the position of the component knob 10, the stroke of the piston sleeve 12 in the internal device intake pipe 3 can be changed, thereby changing the amount of air entering at a single time. This can adjust the output capacity and pressure of the air compressor according to actual needs.

[0025] See also Figure 1-24. An extension pipe 5 is fixedly connected to the top of the air intake pipe 3. A groove 11 is provided on the surface of the extension pipe 5. An installation mechanism 22 is provided inside the extension pipe 5. The installation mechanism 22 includes a receiving groove 19, an abutment block 7, a sleeve ring 8 and a filter 6. The receiving groove 19 is provided inside the extension pipe 5. The receiving groove 19 is communicated with the groove 11. The filter 6 is located inside the extension pipe 5. The surface of the sleeve ring 8 is slidably connected with the inside of the groove 11. One end of the abutment block 7 is rotatably connected with the surface of the sleeve ring 8. The other end of the abutment block 7 abuts against the surface of the filter 6. The surface of the abutment block 7 is slidably connected with the inside of the receiving groove 19. Before air enters the air intake pipe 3, it passes through the filter 6 inside the extension pipe 5, and the filter 6 can intercept dust and tiny particles to ensure the quality of incoming air. The filter 6 needs to be replaced after long-term use. At this time, the sleeve ring 8 is rotated, and the sleeve ring 8 will drive the abutment block 7 to rotate, so that the abutment block 7 enters the interior of the storage groove 19. At this time, the filter 6 can be taken out and replaced, and then the sleeve ring 8 is rotated in the opposite direction, which will drive the abutment block 7 to move inside the storage groove 19. When the abutment block 7 abuts against the inner wall of the storage groove 19, it will move out of the storage groove 19. At this time, one end of the abutment block 7 will abut on the surface of the filter 6, thereby completing the installation of the filter 6. The setting of this structure can fix the filter 6 by simply rotating the sleeve ring 8. The operation is simple and convenient, and it is easy to maintain.

[0026] See also Figure 1 , 4 A driving motor 2 is fixedly connected to one side surface of the base 1, and the output shaft of the driving motor 2 is fixedly connected to one end of a group of cams 15. A boss 20 is fixedly connected to the inside of the extension tube 5, and one side surface of the boss 20 abuts against one side surface of the filter screen 6.

[0027] Working principle: when in use, start the drive motor 2 to drive the cam 15 to rotate, and the V-shaped connecting rod 14 and the connecting rod 13 will drive the piston sleeve 12 to move up and down inside the intake pipe 3. When the piston sleeve 12 moves downward, the intake valve 18 will be driven to open, thereby introducing air into the intake pipe 3. Then, when the piston sleeve 12 moves upward, the intake valve 18 will be closed, and the exhaust valve 9 will be opened, thereby exhausting air into the exhaust pipe 4. When the cam 15 rotates, the crank 17 will be driven to swing through the V-shaped connecting rod 14, and the eccentric disk 16 can be driven to rotate by rotating the knob 10. Due to the eccentric principle, the swing amplitude of the crank 17 will be changed, thereby changing the swing amplitude of the V-shaped connecting rod 14 and the connecting rod 13, and then changing the stroke of the piston sleeve 12 in the intake pipe 3. When the arrow of the knob 10 is located at the bottom, the single The amount of air entering at one time is the smallest, while the amount of air entering at one time is the largest. Before the air enters the intake pipe 3, it will pass through the filter screen 6 inside the extension tube 5, and the filter screen 6 can intercept dust and tiny particles to ensure the quality of the incoming air. The filter screen 6 needs to be replaced after long-term use. At this time, the sleeve ring 8 is rotated, and the sleeve ring 8 will drive the abutment block 7 to rotate, so that the abutment block 7 enters the interior of the storage groove 19. At this time, the filter screen 6 can be taken out and replaced, and the filter screen 6 is placed on the boss 20, and then the sleeve ring 8 is rotated in the opposite direction, which will drive the abutment block 7 to move inside the storage groove 19. When the abutment block 7 abuts against the inner wall of the storage groove 19, it will move out of the storage groove 19. At this time, one end of the abutment block 7 will abut against the surface of the filter screen 6, thereby clamping and fixing the filter screen 6 with the boss 20.

[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An air intake device for a piston air compressor, Features: The invention comprises a base (1), the top of the base (1) is fixedly connected to an air intake pipe (3), the interior of the air intake pipe (3) is slidably connected to a piston sleeve (12), the bottom end of the piston sleeve (12) is sleeved with a connecting rod (13), an air intake amount adjustment mechanism (21) is arranged inside the base (1), the air intake amount adjustment mechanism (21) comprises a cam (15), a V-shaped connecting rod (14), a crank (17) and an eccentric disk (16), one end of the cam (15) The cam (15) is rotatably connected to the inner wall of the base (1); the bottom end of the V-shaped connecting rod (14) is rotatably connected to one end of the cam (15); one end of the V-shaped connecting rod (14) is rotatably connected to the bottom end of the connecting rod (13); both ends of the eccentric disk (16) are rotatably connected to the inside of the base (1); one end of the crank (17) is sleeved on the surface of the eccentric disk (16); and the other end of the crank (17) is rotatably connected to one end of the V-shaped connecting rod (14) away from the connecting rod (13).

2. The air intake device for a piston type air compressor according to claim 1, Features: The top of the air intake pipe (3) is fixedly connected with an extension pipe (5), the surface of the extension pipe (5) is provided with a groove (11), the interior of the extension pipe (5) is provided with a convenient installation mechanism (22), the convenient installation mechanism (22) comprises a receiving groove (19), a contact block (7), a sleeve ring (8) and a filter screen (6), the receiving groove (19) is provided inside the extension pipe (5), the receiving groove (19) is communicated with the groove (11), the filter screen (6) is located inside the extension pipe (5), the surface of the sleeve ring (8) is slidably connected with the inside of the groove (11), one end of the contact block (7) is rotatably connected with the surface of the sleeve ring (8), the other end of the contact block (7) is in contact with the surface of the filter screen (6), and the surface of the contact block (7) is slidably connected with the inside of the receiving groove (19).

3. The air intake device for a piston type air compressor according to claim 1, Features: A driving motor (2) is fixedly connected to one side surface of the base (1), and an output shaft of the driving motor (2) is fixedly connected to one end of a group of cams (15).

4. The air intake device for a piston type air compressor according to claim 1, Features: A knob (10) is rotatably connected to one side surface of the base (1), and one end of the knob (10) passes through the base (1) and is fixedly connected to one end of the eccentric disk (16).

5. The air intake device for a piston type air compressor according to claim 1, Features: The top of the intake pipe (3) is fixedly connected to an intake valve (18), the top surface of the intake pipe (3) is fixedly connected to an exhaust valve (9) and an exhaust pipe (4), and one end of the exhaust valve (9) is located inside the exhaust pipe (4).

6. The air intake device for a piston type air compressor according to claim 2, Features: A boss (20) is fixedly connected to the interior of the extension tube (5), and a side surface of the boss (20) abuts against a side surface of the filter screen (6).

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