Oil-free air compressor with silent structure

Abstract

The present invention relates to an oil-free air compressor with a silent structure applied in the field of air compressors, comprising a soundproof enclosure; a sound-absorbing liner, which is fixedly arranged on the inner wall of the soundproof enclosure; a side panel, both ends of the soundproof enclosure are provided with mounting grooves, the side panel is fixedly arranged inside the mounting grooves, both ends of the sound-absorbing liner are provided with first matching grooves, one side of the side panel is fixedly provided with a first sound-absorbing panel fitted in the first matching groove; a ventilation and heat dissipation structure, the ventilation and heat dissipation structure is arranged at the bottom of the side panel. The performance of reducing the air transmission of noise is achieved by using the above-mentioned sound-absorbing liner, the first sound-absorbing panel and the second sound-absorbing panel; the performance of alleviating vibration noise is achieved by using the above-mentioned shock-absorbing and noise-reducing components; the performance of ventilation and heat dissipation is achieved by using the above-mentioned ventilation and heat dissipation structure, and the ventilation and heat dissipation structure is provided with better noise reduction performance, so as to prevent the noise generated by the air compressor from spreading along the heat dissipation channel.

Description

Technical Field

[0001] The present invention relates to an oil-free air compressor, and in particular to an oil-free air compressor with a silent structure applied in the field of air compressors. Background Art

[0002] Oil-free silent air compressors are micro piston compressors. When the motor drives the compressor crankshaft to rotate, the piston, which is self-lubricating and does not require any lubricant, reciprocates through the transmission of the connecting rod. The working volume formed by the inner wall of the cylinder, the cylinder head and the top surface of the piston will change periodically. In order to prevent noise pollution, existing oil-free silent air compressors will install mufflers at the inlet and outlet, connect the inlet pipe to the silencer tunnel, and build a soundproof cover outside the air compressor. Especially when using a soundproof cover for silent treatment, vibration noise is the largest source of noise.

[0003] In order to solve the problem of vibration noise generated by oil-free silent air compressors in soundproof enclosures, a certain oil-free air compressor with a silent structure in the market adopts a shock-absorbing and noise-reducing design, which has a certain market share.

[0004] The patent with publication number CN213331438U discloses a silent air compressor, including an air compressor, a frame, a soundproof box, an installation room, an air inlet chamber, an air delivery port, an exhaust port, a silent ventilation fan, an air inlet hole and an output hole. The air compressor is installed in the installation room of the soundproof box, which can greatly reduce the noise generated by the air compressor; the air inlet chamber is set at the lower side of the installation room, and the silent ventilation fan is set to dissipate heat for the air compressor; and the output hole is set at the same time without affecting the normal operation of the air compressor.

[0005] Based on the above search and in combination with the prior art, it is found that the existing oil-free silent air compressor has the following deficiencies when working: (1) When the air compressor is working, it will generate a certain amount of vibration noise, and the vibration noise cannot be effectively alleviated, resulting in poor silent performance of the entire air compressor; (2) When a ventilation heat dissipation structure is used to dissipate heat from the air compressor, the heat dissipation structure is not provided with good noise reduction performance, so that the noise generated by the air compressor will spread along the heat dissipation channel. Therefore, an oil-free air compressor with a silent structure is proposed to improve the above problems. Summary of the invention

[0006] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that when the air compressor is working, it will generate certain vibration noise, and the vibration noise cannot be effectively alleviated, resulting in poor quietness performance of the entire air compressor.

[0007] In order to solve the above problems, the present invention provides an oil-free air compressor with a silent structure, comprising a soundproof enclosure box;

[0008] A sound-absorbing liner, which is fixedly arranged on the inner wall of the soundproof enclosure box;

[0009] The side panels and the soundproof enclosure box are provided with mounting grooves at both ends, the side panels are fixedly installed inside the mounting grooves, the sound absorbing liner is provided with first matching grooves at both ends, and one side of the side panels is fixedly provided with a first sound absorbing panel fitted in the first matching grooves;

[0010] A ventilation and heat dissipation structure, the ventilation and heat dissipation structure is arranged at the bottom of the side panels, the ventilation and heat dissipation structure includes ventilation holes opened at the bottom of the two side panels and the bottom of the two first sound-absorbing panels, and the inner walls of the ventilation holes are fixedly installed with ventilation pipes, and one end of the circumferential inner wall of the ventilation pipe is fixedly installed with a heat dissipation fan, and the circumferential inner wall of the ventilation pipe is provided with a ventilation and sound-absorbing component, and the ventilation and sound-absorbing component includes a first baffle ring, a first sound-absorbing ring, a second baffle ring and a second sound-absorbing ring fixedly installed on the inner wall of the ventilation pipe in sequence, and the circumferential inner wall of the first sound-absorbing ring is fixedly installed with a first baffle plate, and the circumferential inner wall of the second sound-absorbing ring is fixedly installed with a second baffle plate, and the diameter of the first baffle plate and the second baffle plate The diameter is larger than the inner diameter of the first baffle ring and the inner diameter of the second baffle ring, a dustproof net is fixedly installed on the circumferential inner wall of the first baffle ring, the material of the first sound-absorbing ring and the second sound-absorbing ring is the same as the material of the sound-absorbing liner, and a plurality of second honeycomb sound-absorbing holes are arranged on the first sound-absorbing ring and the second sound-absorbing ring; the ventilation and heat dissipation structure and the ventilation and sound-absorbing assembly are adopted to realize the performance of ventilation and heat dissipation of the oil-free silent air compressor body, ensure the working effect of the oil-free silent air compressor body, and also make the ventilation and heat dissipation structure have better noise reduction performance, avoid the noise generated by the air compressor from spreading along the heat dissipation channel, and fully ensure the mute effect of the entire oil-free air compressor;

[0011] The oil-free silent air compressor body is arranged inside the sound-absorbing liner, and the bottom of the oil-free silent air compressor body is fixedly installed with support frames distributed at equal distances;

[0012] The vibration-damping and noise-reducing components are fixedly installed on the bottom inner wall of the soundproof enclosure box at equal distances, the bottom of the support frame is fixedly connected to the top of the vibration-damping and noise-reducing components respectively, and the bottom of the sound-absorbing liner is provided with through grooves at equal distances for the bottom of the vibration-damping and noise-reducing components to pass through;

[0013] The shock-absorbing and noise-reducing component includes a supporting base fixedly installed at an equal distance on the bottom inner wall of the soundproof enclosure box, and a mounting base is fixedly installed at the bottom of the supporting frame, a center seat is arranged between the mounting base and the supporting base, an air storage cavity is opened inside the center seat, and an air nozzle is fixedly installed on one side of the air storage cavity, through holes are opened at the top middle position and the bottom middle position of the air storage cavity, and a buffer rod passing through the through hole and extending into the air storage cavity is fixed at the bottom middle position of the mounting base and the top middle position of the supporting base, a piston sleeve is fixedly installed at one end of the buffer rod, the outer wall of the piston sleeve is adapted to the inner wall of the air storage cavity, and side frames are fixed at both ends of the center seat. A guide rod is fixed in the middle position of the inner wall of the side frame, and a movable seat is sleeved on the outer wall of the guide rod. The movable seat is slidably arranged inside the side frame. The top and bottom of both sides of the two movable seats are rotatably connected to the four corners of the bottom of the mounting seat and the four corners of the top of the supporting base through pin shafts, and shock-absorbing air bags sleeved on the outer wall of the guide rod are fixed between one end of the two movable seats and the inner wall of one end of the two side frames respectively. The above-mentioned shock-absorbing and noise-reducing assembly can be used to perform shock-absorbing treatment on the oil-free silent air compressor body, alleviate the vibration noise generated by the oil-free silent air compressor body, and improve the silent performance of the entire oil-free silent air compressor body.

[0014] As a further supplement to the present application, sealing holes are provided on both side panels, and through holes communicating with the sealing holes are provided on the first sound-absorbing panel. The inlet and exhaust ends of the oil-free silent air compressor body are fixedly installed with mufflers passing through the through holes and the sealing holes. An air pipe is fixedly installed at one end of the muffler, and a sealing rubber sleeve is fixed on the inner wall of the sealing hole and is sleeved on the outer wall of the muffler. The above-mentioned muffler is used to realize the function of silencing the inlet and exhaust ends.

[0015] As a further supplement to the present application, a box opening is provided on one side of the soundproof enclosure box, and a box door is hingedly provided on one side of the box opening, a lock is provided on one end of the box door and one end of the box opening, a second matching groove is provided on one side of the sound-absorbing liner, and a second sound-absorbing panel fitted in the second matching groove is fixedly provided on one side of the box door, the sound-absorbing liner, the first sound-absorbing panel and the second sound-absorbing panel are all composited by a layer of metal fiber located in the middle position and two layers of polyurethane foam located on both sides, and the sound-absorbing liner, the first sound-absorbing panel and the second sound-absorbing panel are all provided with a plurality of first honeycomb sound-absorbing holes; the use of the above-mentioned sound-absorbing liner, the first sound-absorbing panel and the second sound-absorbing panel can absorb the external noise generated by the oil-free silent air compressor body.

[0016] As a further supplement to the present application, universal wheels are fixedly installed at the four corners of the bottom of the soundproof enclosure box, and a push handle is fixedly installed at the top of one end of the soundproof enclosure box; the use of the universal wheels and push handle makes the entire air compressor easy to move.

[0017] In summary, after adopting the above structure, the present invention has the following advantages compared with the prior art:

[0018] 1. By adopting the above-mentioned soundproof enclosure box, box door, side panel, sound-absorbing liner, oil-free silent air compressor body, first sound-absorbing panel, second sound-absorbing panel and muffler, it is possible to install mufflers at the inlet and outlet ports of the oil-free silent air compressor body and establish a soundproof enclosure outside, etc., to isolate the noise generated by the oil-free silent air compressor body from the outside, and absorb the generated noise, thereby achieving the performance of reducing the air transmission of noise and ensuring the external noise reduction performance of the entire oil-free silent air compressor body;

[0019] 2. The above-mentioned oil-free silent air compressor body, support frame and shock-absorbing and noise-reducing components are used to reduce the vibration of the oil-free silent air compressor body when the oil-free silent air compressor body is working, thereby alleviating the vibration noise generated by the oil-free silent air compressor body, improving the silent performance of the entire oil-free silent air compressor body, and avoiding the problem of affecting the working environment due to vibration noise;

[0020] 3. By adopting the cooperation of the above-mentioned side panels, ventilation and heat dissipation structure and ventilation and sound-absorbing components, the performance of ventilation and heat dissipation of the oil-free silent air compressor body is achieved, the working effect of the oil-free silent air compressor body is ensured, and the airflow and noise during ventilation form a continuously bent flow direction under the action of the ventilation and sound-absorbing components, and noise reduction can be performed while ventilation and heat dissipation, so that the ventilation and heat dissipation structure is provided with better noise reduction performance, avoiding the noise generated by the air compressor from spreading along the heat dissipation channel, and fully ensuring the silent effect of the entire oil-free air compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of the first implementation method of the present application;

[0022] Figure 2 This is a front cross-sectional view of the first embodiment of the present application;

[0023] Figure 3 This is a cross-sectional view of the sound insulation enclosure box according to the first embodiment of the present application;

[0024] Figure 4 This is an exploded view of the first embodiment of the present application;

[0025] Figure 5 This is a schematic diagram of the door opening of the first embodiment of the present application;

[0026] Figure 6 This is a schematic diagram of a ventilation and heat dissipation structure of a second embodiment of the present application;

[0027] Figure 7 This is a cross-sectional view of the ventilation and heat dissipation structure of the second embodiment of the present application;

[0028] Figure 8This is a ventilation airflow direction diagram of the second embodiment of the present application;

[0029] Fig. 9 This is a schematic structural diagram of a vibration reduction and noise reduction assembly according to the first embodiment of the present application;

[0030] Fig.10 This is a schematic diagram of the air storage chamber and piston sleeve structure of the first embodiment of the present application.

[0031] Description of the numbers in the figure:

[0032] 1. Soundproof enclosure; 2. Box door; 3. Side panel; 4. Ventilation and heat dissipation structure; 401. Ventilation hole; 402. Ventilation pipe; 403. Cooling fan; 404. Second sound-absorbing ring; 405. Second baffle ring; 406. First sound-absorbing ring; 407. First baffle ring; 408. Dust-proof net; 409. First baffle disc; 410. Second baffle disc; 5. Air pipe; 6. Muffler; 7. Push handle; 8. Sound-absorbing liner; 9. Oil-free silent air compressor body; 10. Sealing rubber sleeve; 11. Shock-absorbing and noise-reducing components; 1101. Mounting seat; 110 2. Side frame; 1103. Movable seat; 1104. Support base; 1105. Center seat; 1106. Buffer rod; 1107. Air nozzle; 1108. Movable rod; 1109. Guide rod; 1110. Shock-absorbing airbag; 1111. Air storage chamber; 1112. Piston sleeve; 12. Mounting groove; 13. Support frame; 14. Through hole; 15. Sealing hole; 16. First honeycomb sound-absorbing hole; 17. First matching groove; 18. Second matching groove; 19. First sound-absorbing board; 20. Box opening; 21. Through groove; 22. Second sound-absorbing board. DETAILED DESCRIPTION

[0033] The following describes two implementation modes of the present application in detail with reference to the accompanying drawings.

[0034] The first implementation method:

[0035] The present invention provides an oil-free air compressor with a silent structure, see Figure 1-Figure 10 , including a soundproof enclosure box 1, universal wheels are fixedly installed at the four corners of the bottom of the soundproof enclosure box 1, and a push handle 7 is fixedly installed at the top of one end of the soundproof enclosure box 1;

[0036] A sound absorbing liner 8, which is fixedly arranged on the inner wall of the sound insulation enclosure box 1;

[0037] The side panels 3 and the soundproof enclosure box 1 are provided with mounting grooves 12 at both ends, the side panels 3 are fixedly installed inside the mounting grooves 12, the sound absorbing liner 8 is provided with first matching grooves 17 at both ends, and one side of the side panels 3 is fixedly provided with a first sound absorbing panel 19 fitted in the first matching grooves 17;

[0038] The ventilation and heat dissipation structure 4 is arranged at the bottom of the side plate 3;

[0039] The oil-free silent air compressor body 9 is arranged inside the sound-absorbing liner 8, and the bottom of the oil-free silent air compressor body 9 is fixedly installed with support frames 13 distributed at equal distances;

[0040] The vibration-damping and noise-reducing components 11 are fixedly installed at equal distances on the bottom inner wall of the soundproof enclosure box 1, the bottoms of the support frames 13 are fixedly connected to the tops of the vibration-damping and noise-reducing components 11, and the bottom of the sound-absorbing liner 8 is provided with through grooves 21 at equal distances for the bottom of the vibration-damping and noise-reducing components 11 to pass through;

[0041] The vibration reduction and noise reduction component 11 includes a support base 1104 fixedly installed at an equal distance on the bottom inner wall of the soundproof enclosure box 1, and a mounting base 1101 is fixedly installed at the bottom of the support frame 13, a center seat 1105 is arranged between the mounting base 1101 and the support base 1104, an air storage chamber 1111 is provided inside the center seat 1105, and an air nozzle 1107 is fixedly installed on one side of the air storage chamber 1111, through holes are provided at the top middle position and the bottom middle position of the air storage chamber 1111, and a buffer rod 1106 that passes through the through hole and extends into the air storage chamber 1111 is fixedly installed at the bottom middle position of the mounting base 1101 and the top middle position of the support base 1104, and a piston sleeve 1 is fixedly installed at one end of the buffer rod 1106 112, the outer wall of the piston sleeve 1112 is matched with the inner wall of the air storage chamber 1111, the two ends of the center seat 1105 are fixed with side frames 1102, and the middle position of the inner wall of the side frame 1102 is fixed with a guide rod 1109, the outer wall of the guide rod 1109 is sleeved with a movable seat 1103, and the movable seat 1103 is slidably set inside the side frame 1102, and the top and bottom of the two sides of the two movable seats 1103 are respectively connected to the bottom four corners of the mounting seat 1101 and the top four corners of the support base 1104 by a pin shaft. The movable rod 1108 is rotatably connected, and the shock-absorbing airbag 1110 sleeved on the outer wall of the guide rod 1109 is fixed between one end of the two movable seats 1103 and the inner wall of one end of the two side frames 1102. Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Fig. 9 and Fig.10As shown, when the oil-free silent air compressor body 9 is working, the center seat 1105, the side frame 1102, the movable seat 1103 and the movable rod 1108 in the shock-absorbing and noise-reducing component 11 will move between the mounting seat 1101 and the supporting base 1104, and the buffer rod 1106 will be buffered by the air pressure buffering effect in the air storage chamber 1111, and the movable seat 1103 will also be buffered by the shock-absorbing airbag 1110, so that the oil-free silent air compressor body 9 is shock-absorbing treated by the shock-absorbing and noise-reducing component 11, thereby improving the silent performance of the entire oil-free silent air compressor body 9.

[0042] In the present invention, the two side panels 3 are provided with sealing holes 15, and the first sound absorbing panel 19 is provided with insertion holes 14 communicating with the sealing holes 15. The inlet and outlet ends of the oil-free silent air compressor body 9 are fixedly installed with mufflers 6 passing through the insertion holes 14 and the sealing holes 15, one end of the muffler 6 is fixedly installed with an air pipe 5, and the inner wall of the sealing hole 15 is fixed with a sealing rubber sleeve 10 sleeved on the outer wall of the muffler 6. Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a muffler 6 is connected to the inlet and exhaust ends of the oil-free silent air compressor body 9 to achieve the function of silencing the inlet and exhaust ends.

[0043] In the present invention, a box opening 20 is provided on one side of the soundproof enclosure box 1, and a box door 2 is hingedly provided on one side of the box opening 20, and a latch is provided at one end of the box door 2 and one end of the box opening 20, a second matching groove 18 is provided on one side of the sound absorbing liner 8, and a second sound absorbing panel 22 is fixedly provided on one side of the box door 2 and fits in the second matching groove 18. Figure 1 , Figure 4 and Figure 4 As shown, the door 2 can be opened to operate the oil-free silent air compressor body 9, and the second sound-absorbing panel 22 is used to make the door 2 have sound-absorbing and noise-reducing performance.

[0044] In the present invention, the sound absorbing liner 8, the first sound absorbing board 19 and the second sound absorbing board 22 are all composed of a layer of metal fiber located in the middle and two layers of polyurethane foam located on both sides, and the sound absorbing liner 8, the first sound absorbing board 19 and the second sound absorbing board 22 are all provided with a plurality of first honeycomb sound absorbing holes 16. Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the sound absorbing inner liner 8, the first sound absorbing panel 19 and the second sound absorbing panel 22 can absorb the external noise generated by the oil-free silent air compressor body 9.

[0045] In summary: when in use, the oil-free silent air compressor body 9 and the support frame 13 are fixedly installed on the shock-absorbing and noise-reducing component 11 in the soundproof cover box 1, so that the inlet and outlet ends thereof are connected with the muffler 6. At this time, the cooperation of the sound-absorbing liner 8, the first sound-absorbing board 19, the second sound-absorbing board 22 and the muffler 6 can be used to muffle the noise at the inlet and outlet ends of the oil-free silent air compressor body 9 and to establish a soundproof cover outside the oil-free silent air compressor body 9. The noise generated by the oil-free silent air compressor body 9 is isolated from the outside world, and the noise generated is also absorbed to reduce the noise air transmission. Then, when the oil-free silent air compressor body 9 is working, When the oil-free silent air compressor body 9 is in a state of being damped, the center seat 1105, the side frame 1102, the movable seat 1103 and the movable rod 1108 in the shock-absorbing and noise-reducing component 11 will move between the mounting seat 1101 and the supporting base 1104, and the buffer rod 1106 will be buffered by the air pressure buffering effect in the air storage chamber 1111, and the movable seat 1103 will be buffered by the shock-absorbing airbag 1110, so that the oil-free silent air compressor body 9 will be damped by the shock-absorbing and noise-reducing component 11, and the vibration noise generated by the oil-free silent air compressor body 9 will be alleviated, thereby improving the quietness performance of the entire oil-free silent air compressor body 9.

[0046] Second implementation method:

[0047] Based on Implementation 1, this implementation adds the following structure, so that this application has ventilation and heat dissipation functions, and performs noise reduction and silencing processing on the ventilation process. The specific settings are as follows: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 7 and Figure 8As shown, the ventilation and heat dissipation structure 4 includes ventilation holes 401 opened at the bottom of the two side panels 3 and the bottom of the two first sound-absorbing panels 19, and the inner walls of the ventilation holes 401 are fixedly installed with ventilation pipes 402, and one end of the circumferential inner wall of the ventilation pipes 402 is fixedly installed with a heat dissipation fan 403, and the circumferential inner wall of the ventilation pipes 402 is provided with ventilation and sound-absorbing components, and the ventilation and sound-absorbing components include a first baffle ring 407, a first sound-absorbing ring 406, a second baffle ring 405, and a second sound-absorbing ring 404 fixedly installed on the inner wall of the ventilation pipe 402 in sequence, and the circumferential inner wall of the first sound-absorbing ring 406 is fixedly installed with a first baffle disc 409, and the circumferential inner wall of the second sound-absorbing ring 404 is fixedly installed with a second baffle disc 410, and the diameter of the first baffle disc 409 and the diameter of the second baffle disc 410 are The inner diameter of the first baffle ring 407 is larger than the inner diameter of the second baffle ring 405, and a dustproof net 408 is fixedly installed on the circumferential inner wall of the first baffle ring 407. The material of the first sound-absorbing ring 406 and the second sound-absorbing ring 404 is the same as the material of the sound-absorbing liner 8, and a plurality of second honeycomb sound-absorbing holes are arranged on the first sound-absorbing ring 406 and the second sound-absorbing ring 404; the performance of ventilation and heat dissipation of the oil-free silent air compressor body 9 is realized through the heat dissipation fan 403 in the ventilation and heat dissipation structure 4, thereby ensuring the working effect of the oil-free silent air compressor body 9, and under the action of the ventilation and sound-absorbing components, the airflow and noise during ventilation form a continuously bent flow direction, so that the ventilation and heat dissipation structure 4 is provided with better noise reduction performance, thereby preventing the noise generated by the air compressor from spreading along the heat dissipation channel.

[0048] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. An oil-free air compressor with a silent structure, characterized in that: It comprises a soundproof enclosure box (1); A sound-absorbing inner liner (8), the sound-absorbing inner liner (8) being fixedly arranged on the inner wall of the soundproof enclosure box (1); Side panels (3), both ends of the soundproof enclosure box (1) are provided with mounting grooves (12), the side panels (3) are fixedly mounted inside the mounting grooves (12), both ends of the sound absorbing liner (8) are provided with first matching grooves (17), and one side of the side panels (3) is fixedly provided with a first sound absorbing panel (19) fitted in the first matching grooves (17); A ventilation and heat dissipation structure (4), the ventilation and heat dissipation structure (4) being arranged at the bottom of the side panel (3), the ventilation and heat dissipation structure (4) comprising ventilation holes (401) opened at the bottom of the two side panels (3) and the bottom of the two first sound-absorbing panels (19), the inner walls of the ventilation holes (401) being fixedly mounted with ventilation pipes (402), one end of the circumferential inner wall of the ventilation pipes (402) being fixedly mounted with heat dissipation fans (403), the circumferential inner wall of the ventilation pipes (402) being provided with ventilation and sound-absorbing components, the ventilation and sound-absorbing components comprising ventilation holes (401) being fixedly mounted on the inner wall of the ventilation pipes (402) in sequence a first baffle ring (407), a first sound absorbing ring (406), a second baffle ring (405) and a second sound absorbing ring (404); a first baffle disc (409) is fixedly mounted on the circumferential inner wall of the first sound absorbing ring (406); a second baffle disc (410) is fixedly mounted on the circumferential inner wall of the second sound absorbing ring (404); the diameter of the first baffle disc (409) and the diameter of the second baffle disc (410) are greater than the inner diameter of the first baffle ring (407) and the inner diameter of the second baffle ring (405); and a dust screen (408) is fixedly mounted on the circumferential inner wall of the first baffle ring (407); An oil-free silent air compressor body (9), the oil-free silent air compressor body (9) being arranged inside the sound-absorbing liner (8), and support frames (13) being fixedly mounted at the bottom of the oil-free silent air compressor body (9) at equal distances; A vibration-damping and noise-reducing component (11), wherein the vibration-damping and noise-reducing component (11) is fixedly mounted at equal distances on the bottom inner wall of the soundproof enclosure box (1), the bottom of the support frame (13) is fixedly connected to the top of the vibration-damping and noise-reducing component (11), and the bottom of the sound-absorbing liner (8) is provided with through grooves (21) at equal distances for the bottom of the vibration-damping and noise-reducing component (11) to pass through; The vibration reduction and noise reduction component (11) comprises a support base (1104) fixedly mounted at an equal distance on the inner wall of the bottom of the soundproof enclosure box (1), and a mounting base (1101) is fixedly mounted on the bottom of the support frame (13), a center seat (1105) is arranged between the mounting base (1101) and the support base (1104), an air storage chamber (1111) is provided inside the center seat (1105), and an air nozzle (1107) is fixedly mounted on one side of the air storage chamber (1111), through holes are provided at the top middle position and the bottom middle position of the air storage chamber (1111), and a buffer rod (1106) passing through the through hole and extending into the air storage chamber (1111) is fixedly mounted at the bottom middle position of the mounting base (1101) and the top middle position of the support base (1104), and a piston sleeve is fixedly mounted on one end of the buffer rod (1106). (1112), the outer wall of the piston sleeve (1112) is matched with the inner wall of the air storage chamber (1111), the two ends of the center seat (1105) are fixed with side frames (1102), and the middle position of the inner wall of the side frame (1102) is fixed with a guide rod (1109), the outer wall of the guide rod (1109) is sleeved with a movable seat (1103), and the movable seat (1103) is slidably arranged inside the side frame (1102), and the top and bottom of the two sides of the two movable seats (1103) are respectively connected to the bottom four corners of the mounting seat (1101) and the top four corners of the support base (1104) by a pin shaft. The movable rod (1108) is rotatably connected, and the shock-absorbing airbag (1110) sleeved on the outer wall of the guide rod (1109) is fixed between one end of the two movable seats (1103) and the inner wall of one end of the two side frames (1102).

2. The oil-free air compressor with a silent structure according to claim 1, characterized in that: The two side panels (3) are each provided with a sealing hole (15), and the first sound absorbing panel (19) is each provided with an insertion hole (14) communicating with the sealing hole (15). The inlet and outlet ends of the oil-free silent air compressor body (9) are each fixedly mounted with a muffler (6) passing through the insertion hole (14) and the sealing hole (15). An air pipe (5) is fixedly mounted on one end of the muffler (6), and a sealing rubber sleeve (10) sleeved on the outer wall of the muffler (6) is fixedly mounted on the inner wall of the sealing hole (15).

3. The oil-free air compressor with a silent structure according to claim 2, characterized in that: A box opening (20) is provided on one side of the soundproof enclosure box (1), and a box door (2) is hingedly provided on one side of the box opening (20), one end of the box door (2) and one end of the box opening (20) are provided with a latch, a second matching groove (18) is provided on one side of the sound-absorbing liner (8), and a second sound-absorbing panel (22) is fixedly provided on one side of the box door (2) and is fitted into the second matching groove (18).

4. The oil-free air compressor with a silent structure according to claim 3 is characterized in that: The sound absorbing liner (8), the first sound absorbing plate (19) and the second sound absorbing plate (22) are all composited by a layer of metal fiber located in the middle and two layers of polyurethane foam located on both sides, and the sound absorbing liner (8), the first sound absorbing plate (19) and the second sound absorbing plate (22) are all provided with a plurality of first honeycomb sound absorbing holes (16).

5. The oil-free air compressor with a silent structure according to claim 1, characterized in that: Universal wheels are fixedly mounted at the four corners of the bottom of the soundproof enclosure box (1), and a push handle (7) is fixedly mounted at the top of one end of the soundproof enclosure box (1).

6. The oil-free air compressor with a silent structure according to claim 1, characterized in that: The material of the first sound absorbing circle (406) and the second sound absorbing circle (404) is the same as the material of the sound absorbing inner liner (8), and a plurality of second honeycomb sound absorbing holes are provided on the first sound absorbing circle (406) and the second sound absorbing circle (404).

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