Silencer structure of screw air compressor

Abstract

The utility model relates to the technical field of air compressor noise reduction, and discloses a silencer structure of a screw air compressor, which comprises an air compressor body, a noise reduction door plate is fixedly connected in the air compressor body, a plurality of noise reduction holes are formed in the noise reduction door plate, a plurality of air inlet holes are formed in the noise reduction door plate, and the air inlet holes are communicated with the noise reduction holes. A silencing door plate is fixedly connected to the outer wall of the air compressor body, first silencing cotton is arranged in the silencing door plate, a labyrinth type silencing box is fixedly connected to the outer wall of the silencing door plate, second silencing cotton is arranged in the labyrinth type silencing box, a silencing plate is fixedly connected to the interior of the labyrinth type silencing box, and a driving assembly is arranged in the air compressor body. According to the multi-stage silencing structure of the air compressor, the silencing door plate, the silencing holes, the first silencing cotton, the labyrinth type silencing box, the second silencing cotton and the silencing plate are matched, noise generated in the operation process of the air compressor body is silenced, and the effect that the noise generated in the operation process is effectively reduced through the multi-stage silencing structure is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to air compressor silencer structure field, especially a screw air compressor's silencer structure. BACKGROUND

[0002] Screw air compressor is a kind of equipment using screw rotor (usually two) rotates in shell to compress air. It rotates in shell by two intermeshing screw, and air is inhaled, compressed and discharged, to improve the pressure of air. In the operation process of screw air compressor, it often generates large noise, and the noise can be effectively reduced by silencer structure, so a kind of screw air compressor silencer structure is used.

[0003] The silencer structure of screw air compressor is a device specially designed to reduce the noise generated during the operation of air compressor. In the existing operation process of screw air compressor, large noise will occur, which is not suitable for some quiet places, and the generated noise is easy to cause harm to human body. UTILITY MODEL CONTENT

[0004] In order to make up for the above shortcomings, the utility model provides a kind of screw air compressor silencer structure, aims at improving the existing screw air compressor in the operation process will generate large noise, easy to produce noise pollution, cause harm to human body.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a kind of screw air compressor silencer structure, including air compressor body, the inside fixedly connected with sound attenuation door plate of air compressor body, the inside of sound attenuation door plate is equipped with multiple sound attenuation holes, the inside of sound attenuation door plate is equipped with multiple air inlet holes, the inside of sound attenuation door plate is provided with first sound attenuation cotton, the outer wall of sound attenuation door plate is fixedly connected with labyrinth sound attenuation box, the outer wall of labyrinth sound attenuation box is fixedly connected in the inside of air compressor body, the inside of labyrinth sound attenuation box is provided with second sound attenuation cotton, the inside of labyrinth sound attenuation box is fixedly connected with sound attenuation plate, the inside of air compressor body is provided with driving assembly.

[0006] Preferably, the driving assembly includes a motor, the outer wall of the motor is fixedly connected in the inside of the air compressor body, and the output end of the motor is fixedly provided with a host.

[0007] Preferably, the outer wall of the host is provided with a temperature control valve, the outer wall of the host is provided with a center bracket, and the outer wall of the center bracket is fixedly connected to the outer wall of the motor.

[0008] Preferably, the upper surface of the host is fixedly connected with an air inlet valve, the outer wall of the air inlet valve is fixedly connected with an air filter, and the outer wall of the air filter is fixedly connected in the inside of the air compressor body.

[0009] Preferably, the outer wall of the host is fixedly connected with an oil-gas system, and the lower surface of the oil-gas system is fixedly connected to the inside of the air compressor body.

[0010] Preferably, the upper surface of the oil-gas system is fixedly connected with a minimum pressure valve, and the outer wall of the minimum pressure valve is fixedly connected with a cooler.

[0011] Preferably, the upper surface of the cooler is fixedly connected to the inside of the air compressor body, and the lower surface of the cooler is provided with a cooling fan.

[0012] Preferably, the cooler is connected with an oil filter, and the oil filter is used for further filtering air.

[0013] Preferably, the inside of the cooler is fixedly connected with an air outlet, and the outer wall of the air outlet is fixedly connected to the inside of the air compressor body.

[0014] Preferably, the inside of the air compressor body is fixedly connected with a frequency converter, and the upper portion of the frequency converter is provided with an electric control assembly.

[0015] The utility model has the advantages of the following beneficial effects:

[0016] 1. In the utility model, the noise generated in the operation process of the air compressor body can be silenced through the mutual cooperation between the soundproof door plate, the soundproof hole, the first soundproof cotton, the labyrinth soundproof box, the second soundproof cotton and the soundproof plate, so that the noise generated in the operation process is effectively reduced through the multi-stage sound reduction structure.

[0017] 2. In the utility model, the air is cooled and centrifugally compressed through the mutual cooperation between the motor, the host, the air inlet valve, the oil-gas system, the minimum pressure valve, the cooler, the cooling fan, the oil filter, the temperature control valve and the air filter, so that the output compressed air is clean and dry. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A perspective view of the sound eliminator structure of the screw air compressor is provided for the utility model;

[0019] Figure 2 A frequency converter partial structure schematic view of the sound eliminator structure of the screw air compressor is provided for the utility model;

[0020] Figure 3 A cooler partial structure schematic view of the sound eliminator structure of the screw air compressor is provided for the utility model;

[0021] Figure 4 An oil filter partial structure schematic view of the sound eliminator structure of the screw air compressor is provided for the utility model.

[0022] Legend:

[0023] 1, air compressor body; 2, soundproof door plate; 3, sound hole; 4, air inlet hole; 5, first sound absorbing cotton; 6, labyrinth sound box; 7, second sound absorbing cotton; 8, sound absorbing plate; 9, motor; 10, main machine; 11, center bracket; 12, air inlet valve; 13, oil gas system; 14, minimum pressure valve; 15, cooler; 16, cooling fan; 17, oil filter; 18, air outlet; 19, temperature control valve; 20, frequency converter; 21, electric control assembly; 22, air filter. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the specification of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0025] Referring to Figure 1 and Figure 2 , the utility model provides an embodiment: a sound absorber structure of screw air compressor, including air compressor body 1, the inside fixedly connected with soundproof door plate 2 of air compressor body 1, the inside of soundproof door plate 2 is equipped with multiple sound holes 3, the inside of soundproof door plate 2 is equipped with multiple air inlet holes 4, the inside of soundproof door plate 2 is provided with first sound absorbing cotton 5, the outer wall of soundproof door plate 2 is fixedly connected with labyrinth sound box 6, the outer wall of labyrinth sound box 6 is fixedly connected in the inside of air compressor body 1, the inside of labyrinth sound box 6 is provided with second sound absorbing cotton 7, the inside of labyrinth sound box 6 is fixedly connected with sound absorbing plate 8, the inside of air compressor body 1 is provided with driving assembly.

[0026] Specifically, through the air inlet hole 4 opened in the inside of the soundproof door plate 2, the air outside can be transported into the inside of the air compressor body 1, through the opening of multiple sound holes 3, when the airflow passes through these sound holes 3, the sound is converted into heat energy and dissipated by impact and friction in the hole, through the first sound absorbing cotton 5 and the second sound absorbing cotton 7 arranged in the inside of the soundproof door plate 2 and the labyrinth sound box 6, the noise in the airflow can be absorbed, the airflow speed is reduced, the labyrinth sound box 6 gradually attenuates the sound wave in the propagation process through multi-stage diffusion and reflection, and good noise reduction effect is achieved, this design can weaken high-frequency noise, provide a wider sound absorption frequency band, the sound absorbing plate 8 further reduces the noise by multiple reflection and absorption of the noise in the airflow, and the noise in the process of compressing air by the air compressor body 1 is effectively controlled through the design of multiple sound absorbing structures.

[0027] Referring to Figure 2 ,Figure 3 and Figure 4 The driving assembly comprises a motor 9, the outer wall of the motor 9 is fixedly connected in the air compressor body 1, the output end of the motor 9 is fixedly provided with a main machine 10, the outer wall of the main machine 10 is provided with a temperature control valve 19, the outer wall of the main machine 10 is provided with a center bracket 11, the outer wall of the center bracket 11 is fixedly connected to the outer wall of the motor 9, the upper surface of the main machine 10 is fixedly connected with an air inlet valve 12, the outer wall of the air inlet valve 12 is fixedly connected with an air filter 22, the outer wall of the air filter 22 is fixedly connected in the air compressor body 1, the outer wall of the main machine 10 is fixedly connected with an oil-gas system 13, the lower surface of the oil-gas system 13 is fixedly connected in the air compressor body 1, the upper surface of the oil-gas system 13 is fixedly connected with a minimum pressure valve 14, the outer wall of the minimum pressure valve 14 is fixedly connected with a cooler 15, the upper surface of the cooler 15 is fixedly connected in the air compressor body 1, the lower surface of the cooler 15 is provided with a cooling fan 16, the cooler 15 is connected with an oil filter 17, the oil filter 17 is used for further filtering air, the inside of the cooler 15 is fixedly connected with an air outlet 18, and the outer wall of the air outlet 18 is fixedly connected in the air compressor body 1.

[0028] Specifically, the driving effect of the motor 9 can make the screw rotor in the main machine 10 rotate, the air in the air compressor body 1 is compressed, the center bracket 11 is fixed in the air compressor body 1 to support the main machine 10 and the motor 9, the temperature control valve 19 controls the flow direction of the oil circuit to ensure that the lubricating oil is in the appropriate temperature range, so as to maintain the high efficiency and stable operation of the air compressor body 1, the air inlet valve 12 plays a role in controlling the air to enter or close, when the air inlet valve 12 is opened, the air can enter the air filter 22 inside for primary filtering, the main role of the oil-gas system 13 is to separate the oil and water in the compressed air, to ensure that the output compressed air is clean and dry, the minimum pressure valve 14 can prevent the air compressor body 1 from running in a low pressure or no load condition, to avoid overheating, wear and tear or other potential damage, the cooling fan 16 and the cooler 15 cool the processed air in the air compressor body 1, to prepare for the next compression, the cooled air enters the oil filter 17, separates the oil and gas, the oil is recycled, the gas is discharged, and the processed air is discharged from the air outlet 18 of the air compressor body 1 to supply the required equipment or system.

[0029] With reference to Figure 3 The inside of the air compressor body 1 is fixedly connected with a frequency converter 20, and the upper portion of the frequency converter 20 is provided with an electric control assembly 21.

[0030] Specifically, the frequency converter 20 can adjust the rotating speed of the motor 9 according to the change of air demand, so as to realize energy saving and consumption reduction, and the electric control assembly 21 can control the operating parameters of the air compressor.

[0031] Working principle: when the structure needs to be used, the air outside will enter into the inside of the air compressor body 1 through the air inlet hole 4, the air inlet valve 12 is opened to make the air enter into the inside of the air filter 22 to be filtered firstly, at this time, the air inside the air compressor body 1 can be cooled and treated through the cooling fan 16 and the cooler 15, the filtered air will enter into the inside of the main machine 10, the screw rotor inside the main machine 10 can be driven to rotate to compress the air through the starting motor 9, the compressed air enters into the inside of the oil-gas system 13 to separate the oil in the compressed air through centrifugal force and gravity, the pressure can be regulated through the minimum pressure valve 14, the separated air will be cooled again through the cooler 15 and enter into the inside of the oil filter 17 to further filter the compressed oil, the compressed air can be discharged through the air outlet 18, the air cooling centrifugal compression is achieved, and the effect that the output compressed air is clean and dry is ensured;

[0032] In the working process of the main machine 10, the noise will enter into the labyrinth silencer 6, the length and complexity of the sound propagation path are increased, the resistance of the sound in the propagation process can be reduced, the sound absorption is assisted through the sound absorption plate 8, the first sound absorption cotton 5 and the second sound absorption cotton 7 are arranged in the inside of the labyrinth silencer 6 and the sound absorption door plate 2, the noise can be effectively absorbed, finally, the noise is sound-absorbed again through the sound absorption hole 3 and spreads to the outside, the multi-stage sound absorption structure is achieved, the effect that the noise generated in the running process is effectively reduced is achieved, the structure not only can achieve the effect that the air is cooled and centrifugally compressed, the output compressed air is clean and dry, but also can achieve the effect that the multi-stage sound absorption structure is achieved, the noise generated in the running process is effectively reduced.

[0033] Finally, it should be noted that: the above only describes the preferred embodiments of the utility model, and is not used to limit the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for the person skilled in the art, the technical scheme recorded in the foregoing embodiments can be modified, or some technical features can be replaced, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A silencer structure of a screw air compressor comprising an air compressor body (1), characterized by: The inside of the air compressor body (1) is fixedly connected with a soundproof door plate (2), a plurality of soundproof holes (3) are formed in the inside of the soundproof door plate (2), a plurality of air inlet holes (4) are formed in the inside of the soundproof door plate (2), the inside of the soundproof door plate (2) is provided with first soundproof cotton (5), the outer wall of the soundproof door plate (2) is fixedly connected with a labyrinth soundproof box (6), the outer wall of the labyrinth soundproof box (6) is fixedly connected in the inside of the air compressor body (1), the inside of the labyrinth soundproof box (6) is provided with second soundproof cotton (7), the inside of the labyrinth soundproof box (6) is fixedly connected with a soundproof plate (8), and the inside of the air compressor body (1) is provided with a driving assembly.

2. The silencer structure of a screw air compressor according to claim 1, wherein: The driving assembly comprises a motor (9), and the outer wall of the motor (9) is fixedly connected in the inside of the air compressor body (1), and the output end of the motor (9) is fixedly provided with a host (10).

3. The silencer structure of a screw air compressor according to claim 2, wherein: The outer wall of the host (10) is provided with a temperature control valve (19), the outer wall of the host (10) is provided with a center bracket (11), and the outer wall of the center bracket (11) is fixedly connected to the outer wall of the motor (9).

4. The silencer structure of a screw air compressor according to claim 2, wherein: The upper surface of the host (10) is fixedly connected with an air inlet valve (12), the outer wall of the air inlet valve (12) is fixedly connected with an air filter (22), and the outer wall of the air filter (22) is fixedly connected in the inside of the air compressor body (1).

5. The silencer structure of a screw air compressor according to claim 2, wherein: The outer wall of the host (10) is fixedly connected with an oil-gas system (13), and the lower surface of the oil-gas system (13) is fixedly connected in the inside of the air compressor body (1).

6. A silencer structure for a screw air compressor according to claim 5, characterized in that: The upper surface of the oil-gas system (13) is fixedly connected with a minimum pressure valve (14), and the outer wall of the minimum pressure valve (14) is fixedly connected with a cooler (15).

7. The silencer structure of a screw air compressor according to claim 6, wherein: The upper surface of the cooler (15) is fixedly connected in the inside of the air compressor body (1), and the lower surface of the cooler (15) is provided with a cooling fan (16).

8. The silencer structure of a screw air compressor according to claim 7, wherein: The cooler (15) is connected with an oil filter (17), and the oil filter (17) is used for further filtering air.

9. The silencer structure of a screw air compressor according to claim 6, wherein: The inside of the cooler (15) is fixedly connected with an air outlet (18), and the outer wall of the air outlet (18) is fixedly connected in the inside of the air compressor body (1).

10. The silencer structure of a screw air compressor according to claim 1, wherein: The inside of the air compressor body (1) is fixedly connected with a frequency converter (20), and the upper portion of the frequency converter (20) is provided with an electric control assembly (21).

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