Silent medical air compressor

Abstract

The utility model provides a kind of mute type medical air compressor, including outer box, soundproof inner box body being arranged in the inside of outer box, the inside of outer box is provided with gas tank, the inside lower end of soundproof inner box body is provided with mounting bottom plate, the upper end of mounting bottom plate is provided with several buffer devices, the upper end of several buffer devices is connected with air compressor head, the outlet of air compressor head is provided with outlet pipe, outlet pipe penetrates soundproof inner box body and connects gas tank, the inlet of air compressor head is provided with inlet pipe, high frequency muffler and low frequency muffler are arranged in series on inlet pipe. Several buffer devices can be used to eliminate the noise generated by mechanical vibration during the operation of air compressor head. Soundproof inner box body covers air compressor head, and can isolate noise. High frequency muffler and low frequency muffler can be used to eliminate high frequency sound and low frequency sound generated by airflow respectively. In summary, the above-mentioned medical air compressor has the advantage of small operating noise.

Description

Technical Field

[0001] This utility model relates to air compressors, and more particularly to a silent medical air compressor. Background Technology

[0002] Currently, Chinese patent CN212130740U discloses a medical air compressor, including an outer casing. The upper end of the outer casing is provided with a cover. One side of the cover is rotatably connected to the outer casing, and the other side is detachably connected to the cover. A sealing ring is fixedly provided at the lower end of the cover. A sound insulation board is fixedly provided inside the sealing ring. A sound insulation inner casing is provided inside the outer casing. A fixed base plate is provided at the lower end of the inner side of the sound insulation inner casing. Several buffer devices are provided at the upper end of the fixed base plate. An mounting plate is provided at the upper end of the buffer devices. An air compressor is provided at the upper end of the mounting plate. Both the outer casing and the sound insulation inner casing have through holes. A fixed connecting pipe is fixedly connected to the inner side of the through hole. Sound insulation and breathable cotton is fixedly provided inside the fixed connecting pipe. However, during the use of the aforementioned medical air compressor, the buffer device and sound-absorbing and breathable cotton can only eliminate the noise generated by mechanical vibration during the operation of the air compressor, but cannot eliminate the noise generated by airflow, and there is still a defect of relatively large operating noise. Summary of the Invention

[0003] In view of this, the purpose of this utility model is to provide a silent medical air compressor, which has the advantage of low operating noise.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is: a silent medical air compressor, including an outer casing and a soundproof inner casing disposed inside the outer casing. An air tank is disposed inside the outer casing. A mounting base plate is disposed at the lower end of the inner side of the soundproof inner casing. A plurality of buffer devices are disposed at the upper end of the mounting base plate. An air compressor head is connected to the upper end of the plurality of buffer devices. An air outlet pipe is disposed at the air outlet of the air compressor head. The air outlet pipe passes through the soundproof inner casing and is connected to the air tank. An air inlet pipe is disposed at the air inlet of the air compressor head. A high-frequency silencer and a low-frequency silencer are connected in series on the air inlet pipe.

[0005] Through the above technical solution, several buffer devices installed between the air compressor head and the mounting base plate can eliminate noise generated by mechanical vibration during the operation of the air compressor head. The soundproof inner casing covers the air compressor head, isolating it from noise. High-frequency and low-frequency silencers installed on the intake pipe can respectively eliminate high-frequency and low-frequency noise generated by the airflow. In summary, the above-mentioned medical air compressor has the advantage of low operating noise.

[0006] Preferably, the high-frequency muffler includes a high-frequency muffler housing, and a partition plate is provided on the inner side of the high-frequency muffler housing. The partition plate divides the inner cavity of the high-frequency muffler housing into a high-frequency muffler inner cavity one through which air flows sequentially and a high-frequency muffler inner cavity two. The space of the high-frequency muffler inner cavity one is larger than the space of the high-frequency muffler inner cavity two. A narrow flow channel is provided through the partition plate to connect the high-frequency muffler inner cavity one and the high-frequency muffler inner cavity two.

[0007] Through the above technical solution, the noise generated during airflow is mainly concentrated in the narrow flow channel. The narrow flow channel, the chamber wall of the first high-frequency silencing cavity, and the chamber wall of the second high-frequency silencing cavity generate the superposition of wave peaks and troughs, thereby eliminating sound waves of specific wavelengths.

[0008] Preferably, the low-frequency muffler includes a low-frequency muffler housing, and a cross-shaped partition plate is provided on the inner side of the low-frequency muffler housing. The cross-shaped partition plate divides the inner cavity of the low-frequency muffler housing into three low-frequency muffler inner cavities through which air flows sequentially: a first low-frequency muffler inner cavity, a second low-frequency muffler inner cavity, a third low-frequency muffler inner cavity, and a fourth low-frequency muffler inner cavity. The space of the first low-frequency muffler inner cavity is the same as that of the third low-frequency muffler inner cavity, and the space of the second low-frequency muffler inner cavity is the same as that of the fourth low-frequency muffler inner cavity. The space of the first low-frequency silencing cavity is larger than the space of the third low-frequency silencing cavity. The cross-shaped partition plate is provided with a sound-absorbing hole 1 for connecting the first low-frequency silencing cavity and the second low-frequency silencing cavity, a sound-absorbing hole 2 for connecting the second low-frequency silencing cavity and the third low-frequency silencing cavity, and a sound-absorbing hole 3 for connecting the third low-frequency silencing cavity and the fourth low-frequency silencing cavity. The outer shell of the low-frequency muffler is provided with a plurality of air inlet holes that communicate with the first low-frequency silencing cavity.

[0009] The above technical solution, which combines low-frequency silencing cavity one, silencing hole one, and low-frequency silencing cavity two, and low-frequency silencing cavity three, silencing hole three, and low-frequency silencing cavity four, works on the same technical principle as the high-frequency silencer, and can eliminate sound waves of different wavelengths.

[0010] Preferably, the low-frequency silencing cavity II is provided with activated filter cotton.

[0011] Through the above technical solutions, activated filter cotton can filter impurity particles in the air.

[0012] Preferably, the buffer device includes a buffer base, a guide rod, and a buffer spring. The buffer base is disposed through the mounting base plate, and a through hole is provided at the center of the buffer base. The upper end of the guide rod is fixedly disposed on the support leg of the air compressor head, and the lower end of the guide rod passes through the through hole. The buffer spring is sleeved on the outside of the guide rod, with the upper end of the buffer spring abutting against the support leg of the air compressor head and the lower end of the buffer spring abutting against the buffer base.

[0013] Through the above technical solution, the mechanical vibration generated during the operation of the air compressor head can be transmitted to the buffer spring, causing the buffer spring to undergo elastic deformation, thereby achieving the purpose of shock absorption.

[0014] Preferably, the upper end of the buffer base is provided with a storage groove, and the lower end of the buffer spring is stored in the storage groove.

[0015] Through the above technical solution, the storage slot can be used to limit the lower end of the buffer spring.

[0016] Preferably, a cooling fan is provided at the upper end of the soundproof inner enclosure to drive air to flow into the soundproof inner enclosure.

[0017] Through the above technical solution, the cooling fan can drive air to flow into the soundproof inner casing, so as to dissipate heat from the air compressor head.

[0018] Preferably, a drain pipe is provided on the lower side wall of the gas tank, and a solenoid valve is provided at the outlet of the drain pipe.

[0019] With the above technical solution, when there is water accumulation at the bottom of the gas tank, the control solenoid valve is opened. At this time, the high-pressure air inside the gas tank can squeeze the water and drive the water out through the solenoid valve. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of an embodiment;

[0021] Figure 2 This is a partial schematic diagram of the embodiment after removing part of the outer casing. Figure 1 ;

[0022] Figure 3 This is a partial schematic diagram of the soundproof inner enclosure after removing part of it, as shown in the example. Figure 2 ;

[0023] Figure 4 for Figure 3 Enlarged view of part A;

[0024] Figure 5 A partial schematic diagram of a high-frequency muffler and a low-frequency muffler;

[0025] Figure 6 This is a partial schematic diagram of a low-frequency silencer.

[0026] Attached reference numerals: 1. Outer casing; 2. Soundproof inner casing; 3. Air tank; 4. Mounting base plate; 5. Buffer device; 51. Buffer base; 52. Guide rod; 53. Buffer spring; 6. Air compressor head; 7. Air outlet pipe; 8. Air inlet pipe; 91. High-frequency silencer housing; 92. Dividing plate; 101. Low-frequency silencer housing; 102. Cross-shaped dividing plate; 11. High-frequency silencer inner cavity one; 12. High 13. Low-frequency silencing cavity 2; 14. Narrow flow channel; 15. Low-frequency silencing cavity 1; 16. Low-frequency silencing cavity 2; 17. Low-frequency silencing cavity 3; 18. Low-frequency silencing cavity 4; 19. Silencer hole 1; 20. Silencer hole 2; 21. Silencer hole 3; 22. Air inlet hole; 23. Activated filter cotton; 24. Through hole; 25. Storage slot; 26. Cooling fan; 27. Drain pipe; 28. Solenoid valve. Detailed Implementation

[0027] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, so that the technical solution of this utility model can be more easily understood and mastered.

[0028] A type of silent medical air compressor, such as Figures 1 to 6 As shown, the system includes an outer casing 1 and a soundproof inner casing 2 located inside the outer casing 1. Two air tanks 3 are located inside the outer casing 1, their upper ends connected by a pipe to store more compressed air. Their lower ends are connected by a drain pipe 26, with a solenoid valve 27 located in the middle of the drain pipe 26. A discharge pipe is located at the outlet of the solenoid valve 27, penetrating the outer casing 1 to discharge accumulated water. Soundproofing cotton can be added to the inside of the soundproof inner casing 2 to improve its sound insulation effect. A mounting base plate 4 is located at the lower end of the inner side of the soundproof inner casing 2. Several buffer devices 5 are located at the upper end of the mounting base plate 4, and the upper ends of the buffer devices 5 are connected to an air compressor head 6. An air outlet pipe 7 is installed at the air outlet of the air compressor head 6. The air outlet pipe 7 passes through the soundproof inner enclosure 2 and connects to one of its air tanks 3. An exhaust pipe is installed at the upper end of the other air tank 3, and the exhaust pipe passes through the outer enclosure 1 to supply compressed air. An air inlet pipe 8 is installed at the air inlet of the air compressor head 6. A high-frequency silencer and a low-frequency silencer are connected in series on the air inlet pipe 8. If there is sufficient space in the soundproof inner enclosure 2, the high-frequency silencer and the low-frequency silencer will be installed in the soundproof inner enclosure 2 to achieve a better noise reduction effect.

[0029] The buffer device 5 includes a buffer base 51, a guide rod 52, and a buffer spring 53. The buffer base 51 is mounted through the mounting base 4, and a through hole 23 is formed at the center of the buffer base 51. The upper end of the guide rod 52 is fixed to the support leg of the air compressor head 6, and the lower end of the guide rod 52 passes through the through hole 23. The buffer spring 53 is sleeved on the outside of the guide rod 52, with the upper end of the buffer spring 53 abutting against the support leg of the air compressor head 6 and the lower end of the buffer spring 53 abutting against the buffer base 51. A storage groove 24 is formed at the upper end of the buffer base 51, and the lower end of the buffer spring 53 is stored in the storage groove 24.

[0030] The high-frequency muffler includes a high-frequency muffler housing 91. A partition plate 92 is provided on the inner side of the high-frequency muffler housing 91. The partition plate 92 is perpendicular to the air flow direction. The partition plate 92 divides the inner cavity of the high-frequency muffler housing 91 into a high-frequency muffler inner cavity one 11 through which air flows sequentially and a high-frequency muffler inner cavity two 12. The space of the high-frequency muffler inner cavity one 11 is larger than the space of the high-frequency muffler inner cavity two 12. A narrow flow channel 13 is provided through the partition plate 92 to connect the high-frequency muffler inner cavity one 11 and the high-frequency muffler inner cavity two 12. The narrow flow channel 13 is offset from the opening of the air inlet pipe 8.

[0031] The low-frequency muffler includes a low-frequency muffler housing 101. A cross-shaped partition plate 102 is provided on the inner side of the housing 101, dividing the inner cavity of the housing 101 into four low-frequency muffler chambers: a first chamber 14, a second chamber 15, a third chamber 16, and a fourth chamber 17 through which air flows sequentially. The space of the first chamber 14 is the same as that of the third chamber 16, and the space of the second chamber 15 is the same as that of the fourth chamber 17. The space of the low-frequency silencing cavity 14 is larger than that of the low-frequency silencing cavity 16. A sound-absorbing hole 18 is provided through the cross-shaped partition plate 102 to connect the low-frequency silencing cavity 14 and the low-frequency silencing cavity 25; a sound-absorbing hole 29 is provided to connect the low-frequency silencing cavity 25 and the low-frequency silencing cavity 36; and a sound-absorbing hole 20 is provided to connect the low-frequency silencing cavity 36 and the low-frequency silencing cavity 47. Several air inlet holes 21 communicating with the low-frequency silencing cavity 14 are provided through the low-frequency muffler housing 101. An activated filter cotton 22 is provided in the low-frequency silencing cavity 25.

[0032] The shapes of the high-frequency silencing cavity 11, the high-frequency silencing cavity 2 12, the low-frequency silencing cavity 14, and the low-frequency silencing cavity 2 15 are all different.

[0033] A cooling fan 25 is installed at the upper end of the soundproof inner enclosure 2, which is used to drive air to flow into the soundproof inner enclosure 2.

[0034] Of course, the above are just typical examples of this utility model. In addition, this utility model may have many other specific implementation methods. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed by this utility model.

Claims

1. A silent medical air compressor, comprising an outer casing (1) and a soundproof inner casing (2) disposed inside the outer casing (1), characterized in that: An air tank (3) is provided inside the outer casing (1). An installation base plate (4) is provided at the lower end of the inner side of the soundproof inner casing (2). Several buffer devices (5) are provided at the upper end of the installation base plate (4). An air compressor head (6) is connected to the upper end of several buffer devices (5). An air outlet pipe (7) is provided at the air outlet of the air compressor head (6). The air outlet pipe (7) passes through the soundproof inner casing (2) and is connected to the air tank (3). An air inlet pipe (8) is provided at the air inlet of the air compressor head (6). A high-frequency silencer and a low-frequency silencer are connected in series on the air inlet pipe (8).

2. A silent medical air compressor according to claim 1, characterized in that: The high-frequency muffler includes a high-frequency muffler housing (91), and a partition plate (92) is provided on the inner side of the high-frequency muffler housing (91). The partition plate (92) divides the inner cavity of the high-frequency muffler housing (91) into a high-frequency muffler inner cavity one (11) through which air flows sequentially and a high-frequency muffler inner cavity two (12). The space of the high-frequency muffler inner cavity one (11) is larger than the space of the high-frequency muffler inner cavity two (12). A narrow flow channel (13) is provided through the partition plate (92) to connect the high-frequency muffler inner cavity one (11) and the high-frequency muffler inner cavity two (12).

3. A silent medical air compressor according to claim 1, characterized in that: The low-frequency muffler includes a low-frequency muffler housing (101). A cross-shaped partition plate (102) is provided on the inner side of the low-frequency muffler housing (101). The cross-shaped partition plate (102) divides the inner cavity of the low-frequency muffler housing (101) into four low-frequency muffler cavities: a first low-frequency muffler cavity (14), a second low-frequency muffler cavity (15), a third low-frequency muffler cavity (16), and a fourth low-frequency muffler cavity (17), through which air flows sequentially. The space of the first low-frequency muffler cavity (14) is the same as that of the third low-frequency muffler cavity (16), and the space of the second low-frequency muffler cavity (15) is the same as that of the fourth low-frequency muffler cavity (17). The space of the acoustic cavity one (14) is larger than the space of the low-frequency silencing cavity three (16). The cross partition plate (102) is provided with a sound-absorbing hole one (18) for connecting the low-frequency silencing cavity one (14) and the low-frequency silencing cavity two (15), a sound-absorbing hole two (19) for connecting the low-frequency silencing cavity two (15) and the low-frequency silencing cavity three (16), and a sound-absorbing hole three (20) for connecting the low-frequency silencing cavity three (16) and the low-frequency silencing cavity four (17). The low-frequency muffler shell (101) is provided with a plurality of air inlet holes (21) that communicate with the low-frequency silencing cavity one (14).

4. A silent medical air compressor according to claim 3, characterized in that: The low-frequency silencing cavity 2 (15) is provided with activated filter cotton (22).

5. A silent medical air compressor according to claim 1, characterized in that: The buffer device (5) includes a buffer base (51), a guide rod (52), and a buffer spring (53). The buffer base (51) is installed through the mounting base plate (4). A through hole (23) is provided at the center of the buffer base (51). The upper end of the guide rod (52) is fixedly installed on the support leg of the air compressor head (6). The lower end of the guide rod (52) passes through the through hole (23). The buffer spring (53) is sleeved on the outside of the guide rod (52). The upper end of the buffer spring (53) abuts against the support leg of the air compressor head (6), and the lower end of the buffer spring (53) abuts against the buffer base (51).

6. A silent medical air compressor according to claim 5, characterized in that: The upper end of the buffer base (51) is provided with a storage groove (24), and the lower end of the buffer spring (53) is stored in the storage groove (24).

7. A silent medical air compressor according to claim 1, characterized in that: A cooling fan (25) is provided at the upper end of the soundproof inner box (2), and the cooling fan (25) is used to drive air to flow into the soundproof inner box (2).

8. A silent medical air compressor according to claim 1, characterized in that: A drain pipe (26) is provided on the lower side wall of the gas tank (3), and a solenoid valve (27) is provided at the outlet of the drain pipe (26).

Images