Vibration and noise reduction air compressor

Abstract

The vibration and noise reduction air compressor comprises a body, a protection mechanism and a controller, the protection mechanism is arranged on the outer side of the body, and the controller is arranged above the front side of the protection mechanism and is in telecommunication connection with the body and the protection mechanism; the gas outlet pipe of the body is also provided with a protection pipe aiming at over-high gas flow rate; the protection mechanism further comprises a shell with vibration and noise reduction functions and a base, the shell is arranged on the upper portion of the outer side of the body, and the base is arranged below the body. The device has the functions that the novel vibration reduction base is adopted, the vibration reduction effect is kept, meanwhile, device aging and extra noise generated by air cavity exhaust are reduced, and the device is simple in structure and easy to maintain; the vibration reduction shell which is simple and reliable in structure is adopted, the vibration reduction and noise reduction functions are achieved while maintenance and replacement are convenient, and the labor cost is saved; and a protection mechanism for the situation that the gas flow speed is too high is arranged at the compressed gas outlet, and the reliability of the device is improved while the noise reduction function is considered.

Description

Technical Field

[0001] The invention belongs to the technical field of air compression, and in particular relates to a vibration-reducing and noise-reducing air compressor. Background Art

[0002] In industrial production, compressed air is the second largest power source after electricity, and it is also an important energy source in many process productions. Normal pressure air is compressed into compressed air by using mechanical energy to do work through an air compressor.

[0003] The prior art is as follows: Comparative Document 1: A vibration-reducing and noise-reducing air compressor disclosed in a Chinese patent (CN113482883A) comprises an air compressor body and a vibration-reducing base plate, an air cavity is provided in the vibration-reducing base plate, an air inlet connected to the air cavity is provided on the vibration-reducing base plate, the air cavity is suitable for being inflated through the air inlet, at least one lifting device is provided on the shock-absorbing base, the lifting device is suitable for inflating through the air cavity and lifting the air compressor body, a balancing port connected to the air cavity is provided on the vibration-reducing base plate, a balancing plug is provided at the bottom of the air compressor body, the balancing plug is suitable for closing the balancing port, and when the air compressor body is lifted to a preset height, the balancing plug can be separated from the balancing port, so that the lifting device exhausts air through the air cavity; During normal operation of this scheme, when the air compressor body is lifted up by the lifting device to exhaust the air cavity, the gas discharge will generate additional noise. At the same time, the air compressor body drives the lifting device to vibrate. After the rotating shaft connection of the lifting device is subjected to long-term vibration, it may become loose and generate additional noise, which will affect the vibration reduction effect of the lifting device and increase additional maintenance costs.

[0004] Comparative Document 2: A Chinese patent (CN114076081A) discloses an air compressor with noise reduction and vibration reduction functions, which relates to the technical field of air compressors. The air compressor with noise reduction and vibration reduction functions comprises a first shell, four first vibration dampers are fixedly connected to the bottom of the first shell, a buffer pad is fixedly connected to the top plate of the bottom plate, a second shell is fixedly connected to the top of the buffer pad, the middle and lower parts of the outer side walls around the second shell are interconnected with the inner side walls of the first shell through the second vibration dampers, and silencers are arranged on the intake valve and the exhaust valve; After the shock absorber of this scheme has worked for a long time, the damping oil of the shock absorber device may leak due to the loosening of the sealing device. At this time, the maintenance device needs to remove the outer casing from all the shock absorbers, and then repair and replace the damaged shock absorber. The structure is complicated and causes additional maintenance costs. With this scheme, when the pipeline is blocked, the piston is worn and clogged, the seal is aged and leaks, etc., resulting in an excessively high outlet gas flow rate, the muffler at the outlet of the device cannot reduce the gas flow rate in time to protect the device behind the outlet, causing damage to the device and adding additional costs.

[0005] In summary, the prior art has the following defects: First, air cavity vibration reduction will generate additional noise, and after the shock absorber is used for a long time, the structural aging of the shock absorber and the exhaust of the air cavity will cause the vibration reduction effect to decrease and generate additional noise; Second, after the shock absorber in the outer shell ages and leaks, the maintenance process is complicated, resulting in additional labor costs; Third, after the compressor is blocked and leaks, resulting in an excessively high outlet gas flow rate, there is no protective structure at the gas outlet to prevent the excessive gas flow rate.

[0006] To this end, this article provides a vibration and noise reduction air compressor. Summary of the invention

[0007] In order to solve the above technical problems, the present invention discloses a vibration-damping and noise-reducing air compressor. The device adopts a new vibration-damping base, which reduces the occurrence of additional noise caused by aging of the device while maintaining the vibration-damping effect, and has a simple structure and is easy to maintain; a vibration-damping shell with a simple and reliable structure is adopted, which not only facilitates maintenance and replacement but also takes into account the vibration-damping and noise-reducing functions, thus saving labor costs; a protection mechanism is provided at the compressed gas outlet for the situation where the gas flow rate is too high, which takes into account the noise reduction function while improving the reliability of the device.

[0008] In order to achieve the above technical effects, the present invention provides a vibration-damping and noise-reducing air compressor, including a main body, a protection mechanism, and a controller. The protection mechanism is arranged on the outside of the main body, and the controller is arranged on the upper front side of the protection mechanism and is electrically connected to the main body and the protection mechanism; a protection tube is also arranged on the air outlet pipe of the main body to prevent the gas flow rate from being too high and causing damage to the device; the protection mechanism also includes a shell and a base with both vibration-damping and noise-reducing functions, the shell is arranged on the outside of the main body, and the base is arranged below the main body.

[0009] Preferably, the protection tube further comprises annular fins and sound-absorbing cotton. The annular fins are arranged inside the protection tube and the spacing between the annular fins gradually increases along the airflow direction. The sound-absorbing cotton is arranged on the inner wall of the pipe cavity between the annular fins.

[0010] Preferably, the shell further comprises a shell a, a shell b and an interlayer, the shell a is arranged on the inner side of the shell and fixedly connected to the body, the shell b is arranged on the outer side of the shell, and the interlayer is arranged between the shell a and the shell b.

[0011] Preferably, the interlayer is provided with a grid structure made of rubber, and the pores of the interlayer are in a vacuum state and are parallel to the inner walls of the shell a and the shell b.

[0012] Preferably, the interlayer is provided with a grid structure made of sound-absorbing cotton material, and the grid pores are parallel to the inner walls of the shell a and the shell b.

[0013] Preferably, the grid structure has a unit pore plane that is a triangle, a square, a regular pentagon, a regular hexagon or a circle.

[0014] Preferably, the base also includes a support seat, a chassis, an air cushion, a vacuum pump, and an electric valve. The support seat is arranged below the main body, the chassis is arranged below the support seat and is sealed and slidably connected to the support seat, the air cushion is arranged on the lower surface of the support seat, the vacuum pump is arranged on the right side above the chassis, and the electric valve is arranged on the left side above the chassis and is connected to the chassis through a pipe.

[0015] Preferably, the air cushion is not filled with gas.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The device adopts a base with vibration reduction and noise reduction effects, which reduces the occurrence of additional noise caused by device aging while maintaining the vibration reduction effect, and has a simple structure and is easy to maintain; it adopts a simple and reliable shell, which is convenient for maintenance and replacement while taking into account the vibration reduction and noise reduction functions, saving labor costs; a device for reducing the outlet gas flow rate is set at the compressed gas outlet to protect the device after the outlet pipe, taking into account the noise reduction function while improving the reliability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a front view of the present invention; Figure 2 is an isometric view of the present invention; Figure 3 It is a schematic diagram of the internal structure of the present invention; Figure 4 yes Figure 3 A partial schematic diagram of a; Figure 5 yes Figure 3 Partial schematic diagram of middle b; Figure 6 It is a schematic diagram of the internal structure of the protection tube in the present invention; In the accompanying drawings, the components represented by the reference numerals are listed as follows: 1. Main body; 2. Controller; 3. Exhaust pipe; 4. Protective tube; 5. Shell; 6. Base; 7. Annular fins; 8. Sound-absorbing cotton; 9. Shell a; 10. Shell b; 11. Interlayer; 12. Support seat; 13. Chassis; 14. Air cushion; 15. Vacuum pump; 16. Electric valve. DETAILED DESCRIPTION

[0018] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0019] Therefore, the inventor provides a vibration-damping and noise-reducing air compressor, including a main body 1, a protection mechanism, and a controller 2. The protection mechanism is arranged on the outside of the main body 1, and the controller 2 is arranged on the front and upper part of the protection mechanism and is electrically connected to the main body 1 and the protection mechanism; the air outlet pipe 3 of the main body 1 is also provided with a protection tube 4 to prevent the gas flow rate from being too high and causing damage to the device; the protection mechanism also includes a shell 5 and a base 6 with vibration-damping and noise-reducing functions, the shell 5 is arranged on the outside of the main body 1, and the base 6 is arranged below the main body 1.

[0020] With the above scheme, before the main body 1 is used, the operator controls the chassis 13 to lift the support seat 12 through the controller 2, and the vibration is eliminated through the buffering effect of the air cushion 14. At the same time, the small amount of gas contained in the air cushion 14 weakens the noise, while maintaining the vibration reduction effect, reducing the additional noise, and the structure is simple and easy to maintain; during the use of the device, other vibrations generated by the main body 1 are transmitted to the shell a9, and then transmitted to the shell b10 after being weakened by the interlayer 11, achieving the vibration reduction effect, and vacuum pores are provided between the interlayers 11, and the noise generated inside the shell a9 is also reduced, while facilitating maintenance and replacement, the vibration reduction and noise reduction functions are taken into account. When the interlayer 11 is aged, only the interlayer 11 needs to be replaced, saving labor costs; when the main body 1 has a filter blockage, abnormal cylinder operation, etc., resulting in a high gas flow rate in the outlet pipe 3, the high-flow gas enters the protection tube 4, and the flow rate is reduced after passing through the protection tube 4, and the noise generated during the gas flow is absorbed, while improving the protection of the device after the outlet pipe 3, the noise reduction effect is taken into account, and the reliability of the device is improved.

[0021] Furthermore, the protection tube 4 further includes annular fins 7 and sound-absorbing cotton 8. The annular fins 7 are arranged inside the protection tube 4 and the spacing between the annular fins 7 gradually increases along the airflow direction. The sound-absorbing cotton 8 is arranged on the inner wall of the pipe cavity between the annular fins 7. Among them, when the gas flow rate is too high, the gas from the outlet pipe 3 enters the protective tube 4, and the volume of the gas in the cavity between the annular fins 7 continues to increase. As the kinetic energy is dissipated, the gas flow rate is reduced. At the same time, the noise generated by the gas is absorbed by the sound-absorbing cotton 8 arranged between the gaps, thereby reducing the noise while reducing the gas flow rate and improving protection.

[0022] Furthermore, the housing 5 further comprises a housing a9, a housing b10, and an interlayer 11, wherein the housing a9 is arranged inside the housing 5 and is fixedly connected to the body 1, the housing b10 is arranged outside the housing 5, and the interlayer 11 is arranged between the housing a9 and the housing b10; Among them, the shell a9 can transmit the vibration and noise caused by the main body 1. These vibrations and noise are transmitted to the shell b10 after being weakened by the interlayer 11. The interlayer 11 not only takes into account the noise reduction and vibration reduction effects, but is also more convenient to replace.

[0023] Further, the grid structure sets the unit pore plane to be a triangle, a square, a regular pentagon, a regular hexagon or a circle; Among them, the vibration reduction support effects of pores of different shapes are different. In this embodiment, square pores are used as an example. For devices with strong vibration and requiring better vibration reduction effects, other grid structures with better vibration reduction effects can be selected.

[0024] Furthermore, the base 6 further includes a support seat 12, a chassis 13, an air cushion 14, a vacuum pump 15, and an electric valve 16. The support seat 12 is arranged below the body 1, the chassis 13 is arranged below the support seat 12 and is sealed and slidably connected to the support seat 12, the air cushion 14 is arranged on the lower surface of the support seat 12, the vacuum pump 15 is arranged on the right side above the chassis 13, and the electric valve 16 is arranged on the left side above the chassis 13 and is connected to the chassis 13 through a pipeline; Among them, when not in use, the electric valve 16 is opened, the vacuum pump 15 is closed, the internal cavity of the chassis 13 is connected to the atmosphere, the air pressure in the cavity is normal, and the air cushion 14 is in a contracted state, and the support seat 12 falls on the chassis 13; when the device is in use, the electric valve 16 is closed, the vacuum pump 15 is turned on, the cavity in the chassis 13 is evacuated to a negative pressure, and the air cushion 14 expands under the pressure, lifting the support seat 12 from the chassis 13, so that the air cushion 14 plays a role in buffering the vibration of the chassis 13.

[0025] Further, the air cushion 14 is not filled with gas; Among them, the air cushion 14 shrinks when the pressure in the cavity of the chassis 13 is normal. When the chassis 13 is evacuated, the negative pressure generated will cause the gas in the chassis 13 to expand, thereby lifting the support seat 12 to provide the device body 1 with a buffering and vibration reduction function. At the same time, the small amount of gas in the air cushion 14 can also play a role in reducing noise propagation. Example 1

[0026] like Figure 3 As shown: Furthermore, the interlayer 11 is provided with a grid structure made of rubber and the pores of the interlayer 11 are in a vacuum state and are parallel to the inner walls of the shell a9 and the shell b10; Among them, the grid structure arranged parallel to shell a9 and shell b10 can provide a buffering effect between the shells, thereby reducing the vibration transmitted from shell a9 to shell b10. At the same time, the vacuum pores reduce the noise generated by the main body 1, so that the shell 5 takes into account the effects of vibration reduction and sound insulation. The interlayer 11 can be disassembled and replaced as a whole, which is convenient for maintenance. Example 2

[0027] Furthermore, the interlayer 11 is provided with a grid structure (not shown in the figure) made of sound-absorbing cotton material, and the grid pores are parallel to the inner walls of the shell a9 and the shell b10; Among them, the grid structure interlayer made of sound-absorbing cotton material can provide a vibration reduction effect, while the porous structure of the sound-absorbing cotton can absorb the noise generated by the device.

[0028] In summary, the device has a simple structure and is easy to use; the housing 5 and the base 6 have both vibration reduction and sound insulation effects; the protective tube 4 can prevent damage to the device due to excessive gas flow rate in the outlet pipe.

[0029] Working principle of the present invention: Before the main body 1 is used, the operator starts the vacuum pump 15 through the controller 2, closes the electric valve 16, and extracts the air in the chassis 13. As the gas is extracted, the gas in the air cushion 14 begins to expand under the pressure, so that the air cushion 14 can hold up the support seat 12. After the support seat 12 no longer rises, the vacuum pump 15 is turned off, and the compressor main body 1 starts to run. The vibration generated during the operation is transmitted to the air cushion 14 through the support seat 12, and is weakened under the buffering effect of the air cushion 14. At the same time, since the air cushion 14 contains a small amount of gas, the gas expands under the negative pressure, and the gas with a lower concentration has a better noise reduction effect. The noise transmitted through the support seat 12 is reduced, and the occurrence of additional noise caused by aging of the device is reduced while maintaining the vibration reduction effect. The structure is simple and easy to maintain. During use of the device, other vibrations generated by the body 1 are transmitted to the housing a9 and then to the housing b10 through the interlayer 11; In Example 1: During the vibration transmission process, the vibration transmitted to the shell a9 is weakened by the interlayer 11 of the grid structure, and the vibration transmitted to the shell b10 is reduced, thereby achieving a vibration reduction effect. In addition, vacuum gaps are provided between the interlayers 11, and the noise generated inside the shell a9 is also reduced.

[0030] In Example 2, the vibration is transmitted to the interlayer 11, and after being weakened by the interlayer 11 having a grid structure, the vibration transmitted to the shell b10 is reduced, thereby achieving a vibration reduction effect, and the sound-absorbing cotton also absorbs the noise transmitted from the inside of the shell a9.

[0031] When the interlayer 11 ages and the noise reduction and vibration reduction effect is poor, it is only necessary to remove the shell b10 and replace it with a new interlayer 11; The above solution not only facilitates maintenance and replacement, but also takes into account the vibration and noise reduction functions, saving labor costs; When the filter of the main body 1 is clogged, the cylinder works abnormally, etc., resulting in the gas flow rate of the outlet pipe 3 being too high, the high-flow gas enters the protection tube 4, and the volume of the cavity between the annular fins 7 of the protection tube 4 continues to increase, and the kinetic energy is continuously dissipated, so that the speed of the gas is reduced. At the same time, the annular fins 7 and the sound-absorbing cotton 8 absorb the noise during the gas transmission process, providing protection for the device after the outlet pipe 3 while taking into account the noise reduction effect, thereby improving the reliability of the device; After the compressor is used, the operator opens the electric valve 16 through the controller 2 to connect the cavity of the chassis 13 to the atmosphere and restore the normal pressure. At this time, the air cushion 14 shrinks again, and the support seat 12 falls back onto the chassis 13, ready for the next use of the compressor; At this point, the working principle of the device has been described.

[0032] 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", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including 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.

[0033] 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. A vibration-reducing and noise-reducing air compressor, comprising a body (1), a protection mechanism, and a controller (2), wherein the protection mechanism is arranged outside the body (1), and the controller (2) is arranged above the front side of the protection mechanism and is electrically connected to the body (1) and the protection mechanism, characterized in that: The air outlet pipe (3) of the body (1) is also provided with a protective tube (4) to prevent the device from being damaged due to excessive gas flow rate; the protective mechanism also includes a shell (5) and a base (6) having vibration reduction and noise reduction functions; the shell (5) is arranged outside the body (1) and the base (6) is arranged below the body (1).

2. A vibration and noise reduction air compressor according to claim 1, characterized in that: The protective tube (4) further comprises annular fins (7) and sound-absorbing cotton (8); the annular fins (7) are arranged inside the protective tube (4) and the spacing between the annular fins (7) gradually increases along the airflow direction; the sound-absorbing cotton (8) is arranged on the inner wall of the pipe cavity between the annular fins (7).

3. The vibration and noise reduction air compressor according to claim 1, characterized in that: The housing (5) further comprises a shell a (9), a shell b (10), and an interlayer (11); the shell a (9) is arranged on the inner side of the housing (5) and is fixedly connected to the body (1); the shell b (10) is arranged on the outer side of the housing (5); and the interlayer (11) is arranged between the shell a (9) and the shell b (10).

4. The vibration-reducing and noise-reducing air compressor according to claim 3, characterized in that: The interlayer (11) is provided with a grid structure made of rubber, and the pores of the interlayer (11) are in a vacuum state and are parallel to the inner walls of the shell a (9) and the shell b (10).

5. The vibration and noise reduction air compressor according to claim 3, characterized in that: The interlayer (11) is provided with a grid structure made of sound-absorbing cotton material, and the grid pores are parallel to the inner walls of the shell a (9) and the shell b (10).

6. A vibration and noise reduction air compressor according to any one of claims 4 to 5, characterized in that: The grid structure sets the unit pore plane to be a triangle, a square, a regular pentagon, a regular hexagon or a circle.

7. The vibration and noise reduction air compressor according to claim 1, characterized in that: The base (6) further comprises a support seat (12), a chassis (13), an air cushion (14), a vacuum pump (15), and an electric valve (16); the support seat (12) is arranged below the body (1); the chassis (13) is arranged below the support seat (12) and is sealed and slidably connected to the support seat (12); the air cushion (14) is arranged on the lower surface of the support seat (12); the vacuum pump (15) is arranged on the right side above the chassis (13); and the electric valve (16) is arranged on the left side above the chassis (13) and is connected to the chassis (13) via a pipeline.

8. The vibration and noise reduction air compressor according to claim 7, characterized in that: The air cushion (14) is not filled with gas.

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