An anti-vibration air compressor

Abstract

The present invention discloses an anti-vibration air compressor, specifically relating to the technical field of air compressors, which includes a bottom plate and a gas storage device, an air compression device, and a power supply device arranged above the bottom plate. Through the setting of the anti-vibration component, during the process of air compression by the air compressor, when the compressed air in the buffer cylinder pushes back multiple piston plates and squeezes the hydraulic oil in the corresponding sliding cavity back into multiple damping cylinders, the first throttle hole and the second throttle hole can throttle the hydraulic oil, avoiding the rapid backflow of the hydraulic oil and preventing the first piston and the piston rod from rebounding rapidly. Furthermore, it can avoid the impact force in the reverse direction on the air compressor caused by the rebound force after buffering, reduce the damage to the parts of the air compressor, thereby improving the damping effect and prolonging the service life of the air compressor.

Description

Technical Field

[0001] The present invention relates to the technical field of air compressors, and more specifically, the present invention relates to an anti-vibration air compressor. Background Art

[0002] A piston compressor is a compressor that relies on the reciprocating motion of a piston to pressurize and transport gas. It belongs to the volumetric compressor, also known as a "reciprocating piston compressor" or a "reciprocating compressor", and is mainly composed of a working chamber, transmission components, a body, and auxiliary components. The working chamber is directly used to compress gas and consists of a cylinder, cylinder liner, air valve, packing, piston, and piston rod. The piston is driven by the piston rod to reciprocate in the cylinder. The volume of the working chambers on both sides of the piston changes alternately in opposite directions. The gas on the side with a reduced volume is discharged through the air valve due to increased pressure, and the gas on the side with an increased volume is sucked in through the air valve due to reduced air pressure. The transmission components are used to achieve reciprocating motion, including a crankshaft connecting rod, eccentric slider, swash plate, etc.; among them, the crankshaft connecting rod mechanism is the most commonly used, which consists of a crosshead, connecting rod, and crankshaft, etc.

[0003] Chinese Patent No. 202010486955.8 discloses a reciprocating piston type oil-free lubrication air compressor, including a base, a fixed seat, a shock absorption mechanism, a heat dissipation mechanism, and an air compressor main body. The fixed seat is fixedly connected to the outer periphery of the base. The shock absorption mechanism is assembled on one side of the base. The heat dissipation mechanism is assembled on one side of the shock absorption mechanism. The air compressor main body is installed on the other side of the heat dissipation mechanism. This air compressor not only has a shock absorption function, can avoid vibration from generating noise, and prevent the whole from making hard contact and collision with other objects due to vibration, improving the overall service life, but also has a heat dissipation function, can comprehensively blow and cool the air compressor main body, prevent its internal temperature from being too high and affecting the normal compression of air, ensure the overall working efficiency, and meet the usage requirements in the existing market.

[0004] Although the shock absorption mechanism of the above invention can reduce vibration through spring buffering, using a spring for shock absorption may cause the equipment to vibrate repeatedly. The rebound force after spring buffering may generate an impact force in the opposite direction on the air compressor, which may damage the parts of the air compressor and affect the service life of the air compressor; at the same time, when the air compressor operates at high power and high speed, the generated vibration frequency will be higher. The elastic coefficient of the spring is fixed, which means it can only provide effective buffering within a certain force range, resulting in a significant reduction in the shock absorption effect and further affecting the service life of the air compressor.

[0005] The present invention provides an anti-vibration air compressor, aiming to solve the problems that damping with springs may damage the parts of the air compressor, and the springs can only provide effective buffering within a certain force range, resulting in a significant reduction in the damping effect and affecting the service life of the air compressor. Summary of the Invention

[0006] The purpose of the present invention is to provide an anti-vibration air compressor to solve the problems raised in the above background technology that damping with springs may damage the parts of the air compressor, and the springs can only provide effective buffering within a certain force range, resulting in a significant reduction in the damping effect and affecting the service life of the air compressor.

[0007] To achieve the above purpose, the present invention provides the following technical solution: An anti-vibration air compressor includes a bottom plate and a gas storage device, an air compression device, and a power supply device arranged above the bottom plate, and further includes:

[0008] An anti-vibration component, including a plurality of damping cylinders fixedly connected to the top of the bottom plate. A first piston is slidably connected inside each damping cylinder. A piston rod is fixedly connected to one side of each first piston away from the bottom plate. A buffer cylinder is fixedly connected to the top of the bottom plate. The interior of the buffer cylinder is divided into sliding chambers with the same number as the damping cylinders by a partition. A piston plate is slidably connected inside each sliding chamber.

[0009] A first throttle hole is opened at the lower part of each damping cylinder. Each first throttle hole is communicated with the inside of the corresponding damping cylinder. A second throttle hole with the same number and corresponding position as the sliding chambers is opened at the lower part of the buffer cylinder. Each second throttle hole is communicated with the inside of the corresponding sliding chamber. Each first throttle hole and the corresponding second throttle hole are connected by an oil pipe.

[0010] Specifically, hydraulic oil is filled inside each damping cylinder on the side of the first piston away from the corresponding piston rod.

[0011] Specifically, a connecting member is arranged inside the buffer cylinder. The bottom of the connecting member is fixedly connected to the top of each piston plate. When one of the piston plates moves, the remaining piston plates can be synchronously moved through the connecting member.

[0012] Specifically, the air compression device includes a mounting frame. One end of each piston rod away from the first piston is fixedly connected to the bottom of the mounting frame. A cylinder is mounted on the mounting frame.

[0013] Specifically, a heat-conducting ring is fixedly sleeved on the outer peripheral side of the cylinder. A gas storage cavity is formed inside the heat-conducting ring. The gas storage cavity is communicated with the inside of the buffer cylinder through a pipeline. The gas storage cavity is filled with a thermally expandable gas. A second piston is slidably connected inside the buffer cylinder. A gas for buffering is filled between the second piston and the plurality of piston plates.

[0014] Specifically, when the thermally expandable gas in the gas storage cavity enters the inside of the buffer cylinder, it can push the second piston to move, compressing the gas between the second piston and the plurality of piston plates.

[0015] Specifically, a motor is installed on the mounting frame. One end of the output end of the motor can drive a piston to reciprocate inside the cylinder through a crank connecting rod, sucking in external gas and then compressing and outputting it to the gas storage device for storage. The other end of the output end of the motor is equipped with a cooling fan for heat dissipation when the air compressor is working.

[0016] Specifically, the gas storage device includes a gas tank. The gas tank is installed on the top of the bottom plate. The gas tank is communicated with the gas output end of the air compression device for storing the air compressed by the air compression device.

[0017] Specifically, a protective shell is installed on the bottom plate. A pressure regulating valve assembly is installed on the protective shell. The input end of the pressure regulating valve assembly is communicated with the output end of the gas tank through a hose. A switch for controlling the start and stop of the air compressor is installed on the top of the protective shell. A handle is installed on the bottom plate above the protective shell.

[0018] Specifically, the power supply device includes a plurality of battery packs, and the plurality of battery packs are used to provide electrical energy for the operation of the air compressor.

[0019] The technical effects and advantages of the present invention:

[0020] 1. Through the setting of the anti-vibration component, during the process of the air compressor working to compress air by the air compression device, when the compressed air in the buffer cylinder pushes back the plurality of piston plates and squeezes the hydraulic oil in the corresponding sliding cavities back into the plurality of damping cylinders, the first throttle hole and the second throttle hole can throttle the hydraulic oil, avoiding the rapid backflow of the hydraulic oil, preventing the first piston and the piston rod from rebounding quickly, and avoiding the impact force in the reverse direction generated by the buffer rebound on the air compressor, preventing damage to the parts of the air compressor, thereby improving the damping effect and prolonging the service life of the air compressor.

[0021] 2. Through the arrangement of the connecting member in the present invention, multiple piston plates will move synchronously under the action of the connecting member. When the multiple piston plates move synchronously, the piston plate corresponding to the piston rod at the lowest position will drive the remaining piston plates to pump the hydraulic oil in the volumes of the multiple sliding cavities to balance, making the heights of the multiple piston rods the same, preventing the air compression device from tilting, further reducing the increase in vibration and impact force, improving the stability of the air compressor during operation, and further extending the service life of the air compressor.

[0022] 3. Through the arrangement of the heat-conducting ring and the second piston in the present invention, when the temperature on the cylinder rises, the temperature will be transferred to the heat-conducting ring, causing the thermally expanded gas in the air storage cavity to expand, pushing the second piston to compress the gas between the multiple piston plates, reducing the distance that the multiple piston plates move in the corresponding sliding cavities, and thus the faster the multiple piston plates push back the hydraulic oil, making the first piston drive the piston rod to rebound faster, thereby accelerating the response speed of the anti-vibration component, enabling automatic adjustment of the buffering effect according to the working state of the air compression device, improving the damping effect, making the air compression device operate more stably, and further enhancing the reliability and service life of the air compressor during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is the front view of the overall structure of the present invention.

[0024] Figure 2 It is the rear view of the overall structure of the present invention.

[0025] Figure 3 It is the schematic diagram of the internal structure of the protective shell of the present invention.

[0026] Figure 4 It is the schematic diagram of the partial structure of the air compression device of the present invention.

[0027] Figure 5 It is the schematic diagram of the structure of the anti-vibration component of the present invention.

[0028] Figure 6 It is the cross-sectional view of the internal structure of the damping cylinder of the present invention.

[0029] Figure 7 It is the cross-sectional view of the internal structure of the sliding cavity of the present invention.

[0030] Figure 8 It is the cross-sectional view of the internal structure of the buffer cylinder of the present invention.

[0031] Figure 9 It is the schematic diagram of the partial structure of the connecting member of the present invention.

[0032] Figure 10 It is the cross-sectional view of the internal structure of the heat-conducting ring of the present invention.

[0033] The reference numerals are: 1, bottom plate; 11, protective shell; 12, pressure regulating valve assembly; 13, switch; 14, handle; 2, gas storage device; 21, gas cylinder; 3, air compression device; 31, mounting bracket; 32, air cylinder; 33, motor; 34, cooling fan; 4, power supply device; 41, battery pack; 5, anti-vibration component; 51, shock absorber cylinder; 52, first piston; 53, piston rod; 54, buffer cylinder; 55, partition plate; 56, sliding cavity; 57, piston plate; 58, first throttle hole; 59, second throttle hole; 510, oil pipe; 511, connecting piece; 512, heat conducting ring; 513, gas storage cavity; 514, second piston. Detailed implementation manners

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] Embodiment 1. Refer to Figures 1 to 10 , an anti-vibration air compressor in this embodiment includes a bottom plate 1 and a gas storage device 2, an air compression device 3, and a power supply device 4 disposed above the bottom plate 1.

[0036] Refer to Figure 3 and Figure 4 , the air compression device 3 includes a mounting bracket 31. One end of each piston rod 53 far from the first piston 52 is fixedly connected to the bottom of the mounting bracket 31. An air cylinder 32 is mounted on the mounting bracket 31, and a motor 33 is mounted on the mounting bracket 31. One end of the output end of the motor 33 can drive a piston to reciprocate in the air cylinder 32 through a crankshaft connecting rod, suck external gas and compress it and output it into the gas storage device 2 for storage. The other end of the output end of the motor 33 is equipped with a cooling fan 34 for heat dissipation when the air compressor is working.

[0037] Refer to Figure 1 and Figure 2 , the gas storage device 2 includes a gas cylinder 21. The gas cylinder 21 is mounted on the top of the bottom plate 1. The gas cylinder 21 is connected to the gas output end of the air compression device 3 for storing the air compressed by the air compression device 3.

[0038] Refer to Figure 1 and Figure 2, a protective shell 11 is installed on the bottom plate 1, a pressure regulating valve assembly 12 is installed on the protective shell 11, the input end of the pressure regulating valve assembly 12 is connected to the output end of the gas tank 21 through a hose, a switch 13 for controlling the start and stop of the air compressor is installed on the top of the protective shell 11, and a handle 14 located above the protective shell 11 is installed on the bottom plate 1.

[0039] Reference Figures 1 to 3 The power supply device 4 includes multiple battery packs 41, and the multiple battery packs 41 are used to provide electrical energy for the operation of the air compressor.

[0040] When the air compressor is working, the air compressor is started by pressing the switch 13, the battery pack 41 provides electrical energy for the air compressor, causing the motor 33 to rotate. The output end of the motor 33 drives the piston to reciprocate in the cylinder 32 through a crankshaft connecting rod. Air will enter the cylinder 32 after being filtered by a silencing filter, and the air is compressed by the limiting effect of the check valve in the cylinder 32 and then output to the gas tank 21 for storage for use.

[0041] Reference Figures 3 to 9 , further includes an anti-vibration component 5. The anti-vibration component 5 is arranged between the bottom plate 1 and the gas storage device 2, and includes multiple damping cylinders 51 fixedly connected to the top of the bottom plate 1. A first piston 52 is slidably connected inside each damping cylinder 51, and a piston rod 53 is fixedly connected to the side of each first piston 52 away from the bottom plate 1, which is used to damp the air compression device 3 when the air compressor is working.

[0042] Reference Figures 3 to 9 , a buffer cylinder 54 is fixedly connected to the top of the bottom plate 1. The inside of the buffer cylinder 54 is divided into sliding cavities 56 with the same number as the damping cylinders 51 by a partition plate 55. A piston plate 57 is slidably connected inside each sliding cavity 56. A first throttle hole 58 is opened at the lower part of each damping cylinder 51, and each first throttle hole 58 is communicated with the inside of the corresponding damping cylinder 51. A second throttle hole 59 with the same number and corresponding position as the sliding cavities 56 is opened at the lower part of the buffer cylinder 54, and each second throttle hole 59 is communicated with the inside of the corresponding sliding cavity 56. A hydraulic oil pipe 510 is connected between each first throttle hole 58 and the corresponding second throttle hole 59, and hydraulic oil is filled on the side of each damping cylinder 51 where the corresponding first piston 52 is away from the corresponding piston rod 53.

[0043] During actual use, when the air compressor operates to compress air by the air compression device 3, the vibration generated during the operation of the air compression device 3 is transmitted to the plurality of piston rods 53 through the mounting frame 31, causing the plurality of piston rods 53 to drive the corresponding first pistons 52 to move within the corresponding shock-absorbing cylinders 51. During the movement of the plurality of first pistons 52 within the corresponding shock-absorbing cylinders 51, the hydraulic oil within the corresponding shock-absorbing cylinders 51 is squeezed into the corresponding sliding cavities 56 through the first throttle holes 58, oil pipes 510, and second throttle holes 59, and the piston plates 57 within the corresponding sliding cavities 56 are pushed to move. During the movement of the plurality of piston plates 57, the air within the buffer cylinders 54 is compressed. At this time, the air within the buffer cylinders 54 can buffer and damp the vibration of the air compression device 3.

[0044] When the compressed air within the buffer cylinders 54 pushes back the plurality of piston plates 57 and squeezes the hydraulic oil within the corresponding sliding cavities 56 back into the plurality of shock-absorbing cylinders 51, the first throttle holes 58 and the second throttle holes 59 can throttle the hydraulic oil, preventing the rapid return of the hydraulic oil and preventing the rapid rebound of the first pistons 52 and the piston rods 53. By adjusting the sizes of the first throttle holes 58 and the second throttle holes 59, the rebound speeds of the first pistons 52 and the piston rods 53 can be synchronously adjusted, avoiding the impact force in the reverse direction on the air compressor caused by the rebound force after buffering, preventing damage to the parts of the air compressor, thereby improving the damping effect and extending the service life of the air compressor.

[0045] Embodiment 2: During actual use, since the main sources of vibration are the unbalanced force and inertial force generated during the operation of the air compression device 3, and the force transmitted from the air compression device 3 to the anti-vibration component 5 is unbalanced, this may cause uneven forces on the plurality of piston rods 53, resulting in different heights of the plurality of piston rods 53 extending, causing the air compression device 3 to tilt, increasing the vibration and impact force, leading to instability and noise, and even possibly causing failures and damages. Therefore, this embodiment improves the device described in the above embodiment.

[0046] Reference Figures 7 to 9 , a connecting member 511 is provided inside the buffer cylinder 54. The bottom of the connecting member 511 is fixedly connected to the top of each piston plate 57. When one of the piston plates 57 moves, the remaining piston plates 57 can be synchronously moved through the connecting member 511.

[0047] During actual use, when the unbalanced force generated by the operation of the air compression device 3 is transmitted to the anti-vibration component 5, causing the heights of the multiple piston rods 53 to be different, the multiple piston rods 53 with different heights will squeeze different volumes of hydraulic oil in the corresponding shock-absorbing cylinders 51 into the corresponding sliding cavities 56 through the corresponding first pistons 52. Since the multiple piston plates 57 are connected by the connecting member 511, the multiple piston plates 57 will move synchronously under the action of the connecting member 511. When the multiple piston plates 57 move synchronously, the piston plate 57 corresponding to the piston rod 53 at the lowest position will drive the remaining piston plates 57 to pump the hydraulic oil in the multiple sliding cavities 56 to balance, making the heights of the multiple piston rods 53 the same, and preventing the air compression device 3 from tilting.

[0048] In summary, through the setting of the connecting member 511, the multiple piston plates 57 will move synchronously under the action of the connecting member 511. When the multiple piston plates 57 move synchronously, the piston plate 57 corresponding to the piston rod 53 at the lowest position will drive the remaining piston plates 57 to pump the hydraulic oil in the multiple sliding cavities 56 to balance, making the heights of the multiple piston rods 53 the same, preventing the air compression device 3 from tilting, further reducing the increase of vibration and impact force, improving the stability of the air compressor during operation, and further extending the service life of the air compressor.

[0049] In Embodiment 3, during actual use, when the air compression device 3 operates at high power and high speed, the generated vibration frequency will be higher. Since the amount of gas in the buffer cylinder 54 remains unchanged and cannot automatically adjust the buffering effect according to the vibration frequency of the air compression device 3, it can only provide effective buffering within a certain range, and the shock-absorbing effect decreases. Therefore, this embodiment improves the device described in the above embodiment.

[0050] Reference Figure 4 、 Figure 7 and Figure 10 , a heat-conducting ring 512 is fixedly sleeved on the outer peripheral side of the air cylinder 32. A gas storage cavity 513 is formed inside the heat-conducting ring 512. The gas storage cavity 513 is connected to the inside of the buffer cylinder 54 through a pipeline. A thermally expandable gas is filled in the gas storage cavity 513. A second piston 514 is slidably connected inside the buffer cylinder 54. A gas for buffering is filled between the second piston 514 and the multiple piston plates 57.

[0051] When the thermally expandable gas in the gas storage cavity 513 enters the inside of the buffer cylinder 54, it can push the second piston 514 to move and compress the gas between the second piston 514 and the multiple piston plates 57.

[0052] During actual use, when the air compression device 3 is working at high power and at high speed, the cooling fan 34 cannot completely reduce the temperature on the cylinder 32. The temperature on the cylinder 32 will gradually increase, and the temperature will be transmitted to the heat conduction ring 512, which will cause the hot expansion gas in the air storage cavity 513 to expand. The expanded hot expansion gas will be transmitted through the pipeline to the buffer cylinder 54, and will push the second piston 514 to move, compressing the gas between the second piston 514 and the multiple piston plates 57, so that the distance that the multiple piston plates 57 move in the corresponding sliding cavity 56 is reduced.

[0053] When the air compression device 3 is working at a high power, the temperature on the cylinder 32 will be higher, and the more hot expansion gas will enter the buffer cylinder 54. The higher the degree of compression of the gas between the second piston 514 and the multiple piston plates 57, the faster the multiple piston plates 57 will push back the hydraulic oil, making the first piston 52 drive the piston rod 53 to rebound faster, so that the response speed of the anti-vibration component 5 is accelerated, so as to automatically adjust the buffer effect according to the working state of the air compression device 3, improve the damping effect, and make the air compression device 3 more stable during operation, thereby further improving the reliability and service life of the air compressor.

[0054] Finally, the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A vibration-resistant air compressor comprising a base plate (1) and an air storage device (2), an air compression device (3) and a power supply device (4) arranged above the base plate (1), characterized in that: Also includes: An anti-vibration assembly (5) comprises a plurality of damping cylinders (51) fixedly connected to the top of the base plate (1), wherein a first piston (52) is slidably connected to the interior of each damping cylinder (51), and a piston rod (53) is fixedly connected to the side of each first piston (52) away from the base plate (1); a buffer cylinder (54) is fixedly connected to the top of the base plate (1), and the interior of the buffer cylinder (54) is divided into sliding chambers (56) of the same number as the damping cylinder (51) by a partition (55), and a piston plate (57) is slidably connected to the interior of each sliding chamber (56); A first throttle hole (58) is provided at the lower portion of each of the damping cylinders (51), and each of the first throttle holes (58) is communicated with the interior of the corresponding damping cylinder (51). A second throttle hole (59) having the same number as and corresponding positions to the sliding cavity (56) is provided at the lower portion of the buffer cylinder (54), and each of the second throttle holes (59) is communicated with the interior of the corresponding sliding cavity (56). Each of the first throttle holes (58) and the corresponding second throttle hole (59) is communicated with via an oil pipe (510). The interior of each of the damping cylinders (51) is filled with hydraulic oil on a side of the corresponding first piston (52) away from the corresponding piston rod (53); A connecting piece (511) is provided inside the buffer cylinder (54), and the bottom of the connecting piece (511) is fixedly connected to the top of each piston plate (57). When one of the piston plates (57) moves, the connecting piece (511) can drive the other piston plates (57) to move synchronously. The air compression device (3) comprises a mounting frame (31), one end of each piston rod (53) away from the first piston (52) is fixedly connected to the bottom of the mounting frame (31), and a cylinder (32) is mounted on the mounting frame (31); A heat-conducting ring (512) is provided on the outer peripheral fixed sleeve of the cylinder (32), an air storage cavity (513) is provided inside the heat-conducting ring (512), the air storage cavity (513) is communicated with the interior of the buffer cylinder (54) through a pipeline, the air storage cavity (513) is filled with heat-expanding gas, a second piston (514) is slidably connected to the interior of the buffer cylinder (54), and a gas for buffering is filled between the second piston (514) and the plurality of piston plates (57); When the thermally expanded gas in the gas storage chamber (513) enters the interior of the buffer cylinder (54), it can push the second piston (514) to move, thereby compressing the gas between the second piston (514) and the plurality of piston plates (57).

2. The vibration-resistant air compressor according to claim 1, characterized in that: A motor (33) is mounted on the mounting frame (31). One end of the output end of the motor (33) can drive the piston to move back and forth in the cylinder (32) through the crankshaft connecting rod, sucking in external gas and compressing and outputting it to the gas storage device (2) for storage. A cooling fan (34) is mounted on the other end of the output end of the motor (33) for dissipating heat when the air compressor is working.

3. The vibration-resistant air compressor according to claim 2, characterized in that: The gas storage device (2) comprises a gas tank (21), which is mounted on the top of the base plate (1). The gas tank (21) is connected to the gas output end of the air compression device (3) and is used to store the air compressed by the air compression device (3).

4. The vibration-resistant air compressor according to claim 3, characterized in that: A protective shell (11) is installed on the bottom plate (1), and a pressure regulating valve assembly (12) is installed on the protective shell (11). The input end of the pressure regulating valve assembly (12) is connected to the output end of the gas tank (21) through a hose. A switch (13) for controlling the start and stop of the air compressor is installed on the top of the protective shell (11). The bottom plate (1) is installed with a handle (14) located above the protective shell (11).

5. The vibration-resistant air compressor according to claim 4, characterized in that: The power supply device (4) comprises a plurality of battery packs (41), and the plurality of battery packs (41) are used to provide electrical energy for the operation of the air compressor.

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