Silencing device for air compressor and corresponding air compressor

Abstract

The utility model discloses a silencer for an air compressor and the corresponding air compressor, and relates to the technical field of air compressors, an air inlet is formed in the side wall of a shell, an air outlet is formed in the bottom of the shell, and a cavity communicated with the air inlet and the air outlet is formed in the shell, so that air enters the cavity from the air inlet, and the air inlet is communicated with the air outlet; the air inlet is further connected with an air inlet pipe, a silencing part is arranged on the air inlet pipe and can absorb noise generated by the air inlet pipe, a plurality of partition plates are arranged at the air outlet and divide the air outlet into a plurality of sub air outlets, and the sub air outlets enable the air velocity to be reduced; the air inlet and the air outlet of the air compressor are communicated with each other, so that noise generated by high-speed air flow is reduced, reflection and scattering of the air flow at the air outlet are increased by the partition plate, noise propagation is further reduced, noise generated in the air suction and exhaust processes of the air compressor can be reduced by mounting the silencing device on the air inlet and the air outlet of the air compressor, and a quieter operating environment is realized.

Description

Technical Field

[0001] The present application relates to the technical field of air compressors, and in particular to a silencer device for air compressors and a corresponding air compressor. Background Art

[0002] An air compressor is a mechanical device that compresses and stores air. In the modern industrial field, air compressors play a vital role in providing the required compressed air for various devices, especially in overhead cranes. Overhead cranes require a large amount of compressed air to support their various operations, and air compressors are the key equipment to provide this compressed air.

[0003] In the related art, when working, the air compressor drives the screw to reciprocate in the cylinder through the motor, so that a large amount of air can be sucked into the cylinder, and the air is compressed and discharged for use by the overhead crane. However, when the air compressor completes the repetitive work of suction and exhaust, it will produce unstable airflow, resulting in a lot of noise. However, the overhead crane usually needs to work in a quiet environment. If the air compressor makes too much noise or vibrates too strongly, it may affect the normal operation of the overhead crane and even interfere with the working environment. Utility Model Content

[0004] The embodiment of the present application provides a silencer device for an air compressor and a corresponding air compressor, which can solve the problem that the air compressor of an overhead crane generates a lot of noise when completing the repetitive work of suction and exhaust.

[0005] On the one hand, an embodiment of the present application provides a silencer device for an air compressor, which includes a shell, an air inlet pipe, a silencer and a plurality of partition plates, wherein an air inlet is provided on the side wall of the shell, an air outlet is provided at the bottom of the shell, and a chamber connecting the air inlet and the air outlet is formed inside the shell; the air inlet pipe is installed at the air inlet, and the air inlet pipe is connected to the chamber; the silencer is arranged on the air inlet pipe, and the silencer is used to absorb the noise generated by the air inlet pipe; a plurality of the partition plates are arranged at intervals at the air outlet, and divide the air outlet into a plurality of sub-outlets.

[0006] Optionally, in some embodiments, the sound-absorbing part includes a sound-absorbing part and a connecting part, the sound-absorbing part is inserted in the air intake pipe, and the sound-absorbing part is used to absorb the noise generated in the air intake pipe; one end of the connecting part is connected to the sound-absorbing part, and the other end of the connecting part is used to be connected to an external air pipe.

[0007] Optionally, in some embodiments, the sound absorbing part includes at least one of a sound absorbing material and a damping material; and the sound absorbing part is a cylindrical structure, and the sound absorbing part is attached to the inner wall of the air intake pipe, and the sound absorbing part is connected to the chamber.

[0008] Optionally, in some embodiments, the silencer device further includes a silencer core, which is disposed in the chamber and is provided with a through hole, one end of the through hole being connected to the air outlet, and the other end of the through hole being connected to the air inlet through the chamber.

[0009] Optionally, in some embodiments, an annular protrusion structure is provided in the chamber, and the annular protrusion structure is arranged around the air outlet, and the annular protrusion structure is located in the through hole, and a gap portion is provided between the annular protrusion structure and the side wall surrounding the through hole.

[0010] Optionally, in some embodiments, the silencer device further comprises a filter element, wherein the filter element is located in the chamber, and the filter element is disposed between the silencer core and the air inlet.

[0011] Optionally, in some embodiments, the silencer device further includes two clip-on parts, both of which are located in the chamber, and the two clip-on parts are respectively arranged on opposite sides of the air inlet, and the opposite ends of the filter element are respectively connected to the two clip-on parts.

[0012] Optionally, in some embodiments, the silencer device further includes a cover body, the top of the shell is provided with an open end, the cover body covers the open end, and the cover body and the shell enclose the chamber.

[0013] Optionally, in some embodiments, the silencing device also includes a fastener and a connecting piece that cooperates with the fastener, one end of the connecting piece is connected to the interior of the shell, the other end of the connecting piece extends to the outside of the shell and is passed through the cover body, and the fastener is assembled on the part of the connecting piece located outside the shell to fix the cover body and the shell together.

[0014] On the other hand, an embodiment of the present application further provides an air compressor, which includes a main unit, wherein the main unit is provided with an air inlet and an air outlet, and the air inlet and / or the air outlet is provided with a silencer as described above.

[0015] The technical effect of a silencer device for an air compressor and a corresponding air compressor provided in an embodiment of the present application is as follows: an air inlet is arranged on the circumferential side wall of the shell, an air outlet is arranged at the bottom of the shell, and a chamber connecting the air inlet and the air outlet is formed inside the shell, so that air enters the chamber from the air inlet and is then discharged from the air outlet, the air inlet is also connected to the air inlet pipe, and a silencer is arranged on the air inlet pipe, the silencer can absorb the noise generated at the air inlet pipe, and a plurality of partition plates are arranged at the air outlet, the plurality of partition plates divide the air outlet into a plurality of sub-air outlets, the smaller sub-air outlets reduce the air flow rate, thereby reducing the noise generated by high-speed airflow, and the presence of the partition plates increases the reflection and scattering of the airflow at the air outlet, further reducing the propagation of noise, so that the silencer device is installed on the air inlet and air outlet of the air compressor, which can significantly reduce the noise generated by the air compressor during the intake and exhaust processes, thereby achieving a quieter operating environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 A schematic diagram of the structure of an air compressor provided by an embodiment of the utility model;

[0018] Figure 2 A schematic diagram of the three-dimensional structure of a muffler provided in an embodiment of the utility model;

[0019] Figure 3 A schematic diagram of the front view of the structure of the muffler provided in an embodiment of the utility model;

[0020] Figure 4 for Figure 3 Schematic diagram of the cross section of AA;

[0021] Figure 5 A schematic diagram of a top view of a portion of a silencing device provided in an embodiment of the utility model;

[0022] Figure 6 A schematic diagram of the three-dimensional structure of a part of the silencing device provided in an embodiment of the utility model;

[0023] Figure 7 This is a schematic structural diagram of a silencer core provided in an embodiment of the utility model installed in a chamber.

[0024] Description of reference numerals:

[0025] 100. Silencing device; 1. Shell; 101. Air inlet; 102. Air outlet; 1021. Sub-air outlet; 103. Chamber; 104. Open end; 2. Air inlet pipe; 3. Silencing element; 31. Sound absorbing part; 32. Connecting part; 4. Partition plate; 5. Silencing core; 51. Through hole; 6. Annular raised structure; 7. Gap part; 8. Filter element; 9. Clamping part; 10. Cover; 11. Fastener; 12. Connecting part; 13. Host. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0027] It should be noted that the same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of this application, it should be understood that if the terms "up", "down", "left", "right", etc. indicate an orientation or position relationship based on the orientation or position relationship shown in the drawings, it is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent.

[0028] At the same time, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0029] Also, in the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0031] On the one hand, see Figure 1 An air compressor provided in an embodiment of the present application includes a main unit 13, on which an air inlet and an air outlet are provided, and a silencer 100 can be provided on the air inlet and the air outlet respectively, and the silencer 100 can absorb the noise generated by the air compressor during the air intake and exhaust process, thereby achieving a quieter operating environment.

[0032] On the other hand, see Figures 1 to 4 , a silencer device 100 for an air compressor provided in an embodiment of the present application, includes a shell 1, an air intake pipe 2, a silencer 3 and a plurality of partition plates 4.

[0033] Specifically, the shell 1 is in the shape of a cylindrical structure, and the diameter of the shell 1 is greater than the height of the shell 1. An air inlet 101 may be provided on the circumferential side wall of the shell 1, and the air inlet 101 is a circular opening. At the same time, an air outlet 102 may be provided at the bottom of the shell 1, and the air outlet 102 is also a circular opening. A chamber 103 connecting the air inlet 101 and the air outlet 102 is formed inside the shell 1, so that smooth air circulation can be achieved, that is, air enters the chamber 103 from the air inlet 101, and is then discharged from the air outlet 102.

[0034] The air intake pipe 2 can be a round tube, and the air intake pipe 2 is arranged outside the chamber 103, and one end of the air intake pipe 2 can be connected to the air inlet 101, so that the air intake pipe 2 is connected to the chamber 103 through the air inlet 101, so that the air can be sucked into the chamber 103 through the air intake pipe 2. A silencer 3 can be provided on the air intake pipe 2, and the silencer 3 can be arranged inside the air intake pipe 2. When the air enters the chamber 103 from the air intake pipe 2, the silencer 3 can be used to absorb the noise generated by the air passing through the air intake pipe 2.

[0035] Combination Figure 5As shown, the partition plate 4 can be a slender plate-like structure, and multiple partition plates 4 can be arranged at intervals at the air outlet 102. Preferably, one ends of the multiple partition plates 4 are arranged toward the central axis of the air outlet 102, and the other ends of the multiple partition plates 4 are arranged away from the central axis of the air outlet 102. The multiple partition plates 4 are arranged in sequence along the circumference of the air inlet 101 at intervals, so that the multiple partition plates 4 can finely divide the air outlet 102 into multiple sub-air outlets 1021. The smaller sub-air outlets 1021 reduce the air flow rate, thereby reducing the noise generated by high-speed airflow, and the presence of the partition plates 4 increases the reflection and scattering of the airflow at the air outlet, further reducing the propagation of noise.

[0036] Therefore, installing the silencer 100 on the air inlet and outlet of the air compressor can significantly reduce the noise generated by the air compressor during the air intake and exhaust processes, thereby achieving a quieter operating environment.

[0037] See also Figure 3 and Figure 4 In some embodiments, the silencer 3 may include a sound absorbing portion 31 and a connecting portion 32. Specifically, the sound absorbing portion 31 may be inserted into the air intake pipe 2, and the sound absorbing portion 31 may be attached to the inner wall of the air intake pipe 2. The sound absorbing portion 31 may be used to absorb the noise generated when air passes through the air intake pipe 2.

[0038] One end of the connecting part 32 can be connected to the sound absorbing part 31, and the other end of the connecting part 32 can be connected to an external air pipe. Preferably, the connecting part 32 is a screw joint, and a connecting hole 51 is provided in the middle position of the screw joint, and a threaded structure is provided on the outer ring of the screw joint, so that the air intake pipe 2 can be connected to the air pipe on other air intake devices through the connecting part 32, and the connection is also very convenient.

[0039] See also Figure 4 In some embodiments, the sound absorbing portion 31 may include at least one of a sound absorbing material and a damping material. When the sound absorbing portion 31 includes the sound absorbing material, the sound absorbing portion 31 is generally composed of fiber products such as glass wool and rock mineral wool, which can absorb the energy of sound waves, thereby reducing the propagation of noise. When the sound absorbing portion 31 includes a damping material, such as a spring sheet, the sound absorbing portion 31 can be used to reduce or absorb the vibration generated when the sound waves propagate inside the intake pipe 2, thereby reducing the noise level. When the sound absorbing portion 31 includes the sound absorbing material and the damping material, the sound absorbing portion 31 can better reduce noise.

[0040] Specifically, the sound absorbing part 31 can be a cylindrical structure, and the outer circle side wall of the sound absorbing part 31 can be attached to the inner wall of the intake pipe 2. It can also be said that the central axis of the sound absorbing part 31 is colinear with the central axis of the intake pipe 2, so that the sound absorbing part 31 can be connected with the chamber 103, so that the air can flow smoothly from the intake pipe 2 into the chamber 103, and the air will pass through the sound absorbing part 31, so that the sound absorbing part 31 can better absorb the noise generated by the intake pipe 2.

[0041] See also Figure 4 and Figure 6 In some embodiments, the silencer device 100 may further include a silencer core 5, which may be a cylindrical structure, and the silencer core 5 is arranged inside the chamber 103, and a through hole 51 is provided on the silencer core 5, and the central axis of the through hole 51 may be parallel to the central axis of the air outlet 102. Preferably, the central axis of the through hole 51 is collinear with the central axis of the air outlet 102, so that one end of the through hole 51 can be connected to the air outlet 102, and there is a gap between the side of the silencer core 5 facing away from the air outlet 102 and the inner side wall of the shell 1, that is, there is an air flow channel between the silencer core 5 and the shell 1, so that the other end of the through hole 51 can be connected to the air inlet 101 through the chamber 103, so that the air entering the cavity can be discharged from the air outlet 102 through the through hole 51, and the silencer core 5 can absorb the noise generated by the air in the chamber 103, thereby further reducing the noise.

[0042] Preferably, the silencer core 5 can be made of sponge material. The sponge material can effectively absorb and reduce the propagation of noise due to its porosity and good sound absorption performance. The silencer core 5 is provided with a plurality of small holes, which can further enhance its silencer effect.

[0043] Specifically, the small holes not only help to increase the specific surface area of ​​the silencer core 5 and provide more sound absorption surfaces, but also increase the reflection and scattering of sound waves inside the silencer core 5 by changing the propagation path of the sound waves, which helps to disperse and weaken the sound wave energy, thereby achieving better noise control.

[0044] At the same time, when air flows through the silencer cores 5 with small holes, the small holes not only serve as noise absorption channels, so that the noise is significantly reduced during the propagation process, but the small holes can also help the air to pass through the chamber 103 smoothly.

[0045] See also Figure 4 and Figure 7In some embodiments, the interior of the chamber 103 may also be provided with an annular protrusion structure 6, especially a circular protrusion, and the annular protrusion structure 6 may be arranged around the air outlet 102, that is, the inner bottom surface of the shell 1 is protrudingly formed with an annular protrusion structure 6, and the air outlet 102 is located in the middle position of the annular protrusion structure 6, so that an effective noise control area is formed around the air outlet 102, and the annular protrusion structure 6 can reflect and scatter the sound waves transmitted from the air outlet 102, thereby reducing the propagation of noise.

[0046] When the silencer core 5 is assembled in the chamber 103, the annular protrusion structure 6 can be located in the through hole 51 of the silencer core 5. At the same time, there is a gap portion 7 between the annular protrusion structure 6 and the side wall surrounding the through hole 51. The gap portion 7 can adjust the frequency and amplitude of the sound wave to further enhance the silencer effect.

[0047] See also Figures 5 to 7 In some embodiments, the silencer 100 may further include a filter element 8, and the filter element 8 is located in the chamber 103. Specifically, the filter element 8 is arranged between the silencer core 5 and the air inlet 101, and there is a gap between the filter element 8 and the inner wall of the shell 1.

[0048] When the air compressor is working, air enters the chamber 103 through the air inlet 101. Since a filter element 8 is provided between the silencer core 5 and the air inlet 101, the force generated by the air passing through the air inlet 101 first acts on the filter element 8, which can prevent the air from directly acting on the silencer core 5 and prevent the part of the silencer core 5 facing the air inlet 101 from being deformed. The filter element 8 can filter out impurities and particulate matter in the air and prevent excessive dust from accumulating on the part of the silencer core 5 facing the air inlet 101.

[0049] At the same time, a part of the air flowing into the chamber 103 from the air inlet 101 passes through the filter element 8 and flows directly toward the silencer core 5, while the other part of the air is blocked by the filter element 8 and flows out from the gap between the filter element 8 and the shell 1, so that the air flows in the chamber 103 along the inner wall of the shell 1 in a clockwise or counterclockwise direction, so that the air can pass through the silencer core 5 evenly, effectively reducing the generation of noise. At the same time, when the air passes through the silencer core 5 evenly, the filtered dust can also be evenly attached to the surface of the silencer core 5, avoiding the dust from accumulating in only a small area on the silencer core 5, thereby effectively improving the service life of the silencer core 5 and facilitating air circulation.

[0050] See also Figures 5 to 7In some embodiments, the silencer 100 may further include two clip-on portions 9, both of which are disposed in the chamber 103, and the two clip-on portions 9 are respectively located on opposite sides of the air inlet 101, or it can be said that the air inlet 101 is located between the two clip-on portions 9, and the opposite ends of the filter element 8 can be respectively connected to the two clip-on portions 9, so that the filter element 8 is fixed between the air inlet 101 and the silencer core 5. By providing two clip-on portions 9, the filter element 8 can be conveniently fixed between the air inlet 101 and the silencer core 5, and it is also convenient to replace the filter element 8 later.

[0051] See also Figures 2 to 4 In some embodiments, the silencer 100 may further include a cover body 10, and the top of the shell 1 may be provided with an open end 104. The shape and size of the cover body 10 match the shape and size of the open end 104, so that the cover body 10 can cover the open end 104, so that the cover body 10 and the shell 1 can form a chamber 103. When the silencer core 5 is damaged and needs to be replaced, the cover body 10 can be opened and replaced with a new silencer core 5. By providing the cover body 10, the silencer device 100 can be easily maintained at a later time.

[0052] See also Figures 2 to 4 In some embodiments, the silencer 100 may further include a fastener 11 and a connector 12. The fastener 11 and the connector 12 may be used in combination. One end of the connector 12 may be connected to the interior of the shell 1, and the other end of the connector 12 may extend to the outside of the shell 1, and the other end of the connector 12 may be passed through the cover body 10. The fastener 11 is assembled on the portion of the connector 12 outside the shell 1, and the fastener 11 is tightened, so that the cover body 10 and the shell 1 can be firmly fixed together, which can facilitate the installation of the cover body 10 on the shell 1 and the removal of the cover body 10 from the shell 1.

[0053] Preferably, one end of the connecting member 12 can be integrally formed with the inner bottom surface of the housing 1 .

[0054] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A silencer for an air compressor, characterized in that: The silencing device (100) comprises: A shell (1), wherein an air inlet (101) is provided on a side wall of the shell (1), an air outlet (102) is provided at the bottom of the shell (1), and a chamber (103) communicating with the air inlet (101) and the air outlet (102) is formed inside the shell (1); An air intake pipe (2), the air intake pipe (2) being installed at the air intake port (101), and the air intake pipe (2) being in communication with the chamber (103); A silencer (3), the silencer (3) being arranged on the air intake pipe (2), and the silencer (3) being used to absorb the noise generated by the air intake pipe (2); A plurality of partition plates (4), wherein the plurality of partition plates (4) are arranged at intervals at the air outlet (102) and divide the air outlet (102) into a plurality of sub-air outlets (1021).

2. The silencing device according to claim 1, characterized in that: The muffler (3) comprises: A sound absorbing part (31), the sound absorbing part (31) being inserted into the air intake pipe (2), and the sound absorbing part (31) being used to absorb noise generated in the air intake pipe (2); A connecting part (32), one end of the connecting part (32) is connected to the sound absorbing part (31), and the other end of the connecting part (32) is used to be connected to an external air pipe.

3. The silencing device according to claim 2, characterized in that: The sound absorbing part (31) comprises at least one of a sound absorbing material and a damping material; and The sound absorbing part (31) is a cylindrical structure, and the sound absorbing part (31) is attached to the inner wall of the air intake pipe (2), and the sound absorbing part (31) is connected to the chamber (103).

4. The silencing device according to claim 1, characterized in that: The silencer device (100) further comprises a silencer core (5), wherein the silencer core (5) is arranged in the chamber (103), and the silencer core (5) is provided with a through hole (51), one end of the through hole (51) is connected to the air outlet (102), and the other end of the through hole (51) is connected to the air inlet (101) through the chamber (103).

5. The silencing device according to claim 4, characterized in that: An annular protrusion structure (6) is provided in the chamber (103), and the annular protrusion structure (6) is arranged around the circumference of the air outlet (102), and the annular protrusion structure (6) is located in the through hole (51), and a gap portion (7) is provided between the annular protrusion structure (6) and the side wall surrounding the through hole (51).

6. The silencing device according to claim 4, characterized in that: The silencer device (100) further comprises a filter element (8), wherein the filter element (8) is located in the chamber (103), and the filter element (8) is arranged between the silencer core (5) and the air inlet (101).

7. The silencing device according to claim 6, characterized in that: The silencer (100) further comprises two clamping parts (9), both of which are located in the chamber (103), and the two clamping parts (9) are respectively arranged on opposite sides of the air inlet (101), and the opposite ends of the filter element (8) are respectively connected to the two clamping parts (9).

8. The silencing device according to claim 1, characterized in that: The silencer (100) further comprises a cover body (10); an open end (104) is provided on the top of the shell (1); the cover body (10) covers the open end (104); and the cover body (10) and the shell (1) enclose the chamber (103).

9. The silencing device according to claim 8, characterized in that: The silencer (100) further comprises a fastener (11) and a connector (12) matched with the fastener (11); one end of the connector (12) is connected to the interior of the shell (1); the other end of the connector (12) extends to the outside of the shell (1) and is passed through the cover (10); the fastener (11) is assembled on the portion of the connector (12) located outside the shell (1) to fix the cover (10) and the shell (1) together.

10. An air compressor, characterized in that: The invention comprises a main unit (13), wherein the main unit (13) is provided with an air inlet and an air outlet, and the air inlet and / or the air outlet is provided with a silencer as claimed in any one of claims 1 to 9.

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