Air compressor with air inlet silencing function

Abstract

The utility model relates to an air compressor with air inlet and noise reduction functions, which belongs to the field of air compressors and comprises an air compressor body, an air inlet is arranged on the side wall of the air compressor body, a noise reduction outer frame is mounted in the air inlet, a noise reduction structure is arranged in the noise reduction outer frame, and the noise reduction outer frame is connected with the air inlet. A dustproof assembly is arranged in the silencing outer frame. The noise reduction structure comprises a noise reduction plate and noise reduction rock wool. According to the air compressor with the air inlet noise reduction function, impurities in entering air are filtered through the inner frame, the filtered air passes through the multiple noise reduction plates to achieve the noise reduction effect before entering the air compressor body, sound waves can be reflected on the surfaces of the noise reduction plates for multiple times through the Z-shaped design of the noise reduction plates, the propagation path of the sound waves is increased, and the noise reduction effect is improved. And in cooperation with the silencing rock wool, the silencing effect is improved, and therefore noise generated at the air inlet when the air compressor works is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of air compressors, in particular to an air compressor with an air intake silencing function. Background Art

[0002] An air compressor, usually referred to as an air compressor, is a device that converts mechanical energy into gas pressure energy. It is used to compress gas and increase its pressure. It is widely used in various industrial and commercial fields. There are two main working principles of air compressors: volumetric compression and dynamic compression. Positive displacement compressors increase the pressure of gas by changing the volume of gas, while dynamic compressors achieve pressure increase by accelerating the speed of gas.

[0003] According to Chinese patent publication number CN207315610U, an improved air intake structure of an air compressor includes a compressor body, an air intake pipe, a sound insulation protective shell air intake structure, a shock absorbing base structure and a push-pull rod structure, wherein the air intake pipe is installed on the upper part of the shock absorbing base structure; the compressor body is located on the inner side of the sound insulation protective shell air intake structure and is installed on the shock absorbing base structure.

[0004] When the air compressor of this patent number is in use, a soundproof protective shell is set to wrap the compressor to achieve a silencing effect. A compressor is a device that compresses gas or liquid to a higher pressure. The compressor will produce pressure fluctuations when inhaling and exhausting air (or other working fluids). These fluctuations will cause relatively large dynamic noise. This patent number only sets a filter and a dust net at the air intake joint, which makes it easy for the compressor to generate relatively large noise at the air intake when it is working. Therefore, an air compressor with an air intake silencing function is proposed to solve the above problem. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides an air compressor with an air intake silencing function, which has the advantages of reducing the noise generated at the air intake and solving the problem that the air intake of the compressor is prone to generate loud noise.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solution: an air compressor with an air intake silencing function, comprising an air compressor body, a side wall of the air compressor body is provided with an air intake, a silencing outer frame is installed inside the air intake, a silencing structure is arranged inside the silencing outer frame, and a dustproof component is arranged inside the silencing outer frame.

[0007] The sound-absorbing structure includes a sound-absorbing plate and sound-absorbing rock wool, the sound-absorbing rock wool is installed on the inner wall of the sound-absorbing outer frame, there are several sound-absorbing plates, and several sound-absorbing plates are installed in the inner part of the sound-absorbing outer frame at equal distances from top to bottom, and an embedding groove is opened on the front surface of the sound-absorbing outer frame.

[0008] The dustproof assembly comprises an inner frame, a dustproof net is fixedly installed inside the inner frame, the inner frame is clamped inside the embedding groove, and a limiting piece for limiting the inner frame is installed on the sound-absorbing outer frame.

[0009] Furthermore, the limiting member includes a limiting plate, which is rotatably connected to the front surface of the silencer outer frame, and the back side of the limiting plate is fixedly connected to a fixing cylinder, the interior of the fixing cylinder is slidably connected to an annular slide, the interior of the annular slide is fixedly connected to a limiting rod, and the outer sleeve of the limiting rod is provided with a telescopic spring.

[0010] Furthermore, the telescopic spring is installed between the inner wall of the fixed cylinder and the annular slide plate, and the side of the limiting rod away from the fixed cylinder passes through the limiting plate and extends to the outside and is fixed with a pulling plate.

[0011] Furthermore, limiting grooves are provided at the four corners of the front surface of the inner frame, and one end of the limiting rod away from the limiting plate passes through the fixing tube and is inserted into the limiting groove.

[0012] Furthermore, the sound-absorbing plate is a "Z"-shaped structure, and the spacing between several of the sound-absorbing plates is 10 cm.

[0013] Furthermore, the silencer plate is an aluminum alloy plate, and a plurality of silencer holes are provided inside the silencer plate.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0015] The air compressor with air intake silencer function allows the incoming gas to filter impurities in the gas through an inner frame. The filtered gas passes through a plurality of silencer plates before entering the air compressor body to achieve a silencer effect. The Z-shaped design of the silencer plate can make sound waves reflect on its surface multiple times, increase the propagation path of the sound waves, thereby reducing the propagation and reflection of the sound, and cooperate with the silencer rock wool to improve the silencer effect, thereby reducing the noise generated at the air intake when the air compressor is working. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 The utility model structure Figure 1 A magnified view of the structure at center A;

[0018] Figure 3 It is a side sectional view of the structural limit plate of the utility model;

[0019] Figure 4 It is a three-dimensional diagram of the inner frame of the structure of the utility model;

[0020] Figure 5It is a side sectional view of the sound-absorbing outer frame of the utility model structure.

[0021] In the figure: 1. Air compressor body; 2. Silencer outer frame; 3. Inner frame; 4. Dust-proof net; 5. Limit plate; 6. Embedding groove; 7. Pull plate; 8. Limit rod; 9. Fixed cylinder; 10. Annular slide plate; 11. Telescopic spring; 12. Silencer plate; 13. Limit groove; 14. Silencer rock wool. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-5 In this embodiment, an air compressor with an air intake silencer function includes an air compressor body 1. An air intake is opened on the side wall of the air compressor body 1. A silencer outer frame 2 is installed inside the air intake. A silencer structure is arranged inside the silencer outer frame 2. A dustproof component is arranged inside the silencer outer frame 2.

[0024] The sound-absorbing structure includes a sound-absorbing plate 12 and sound-absorbing rock wool 14. The sound-absorbing rock wool 14 is installed on the inner wall of the sound-absorbing outer frame 2. There are several sound-absorbing plates 12, and several sound-absorbing plates 12 are installed equidistantly up and down inside the sound-absorbing outer frame 2. An embedding groove 6 is opened on the front surface of the sound-absorbing outer frame 2.

[0025] It can be understood that the filtered gas first passes through several silencer plates 12 before entering the air compressor body 1 to achieve a silencing effect. The Z-shaped design of the silencer plate 12 can make the sound waves reflect on its surface multiple times, increase the propagation path of the sound waves, thereby reducing the propagation and reflection of the sound, and cooperate with the silencing rock wool 14 to improve the silencing effect, thereby reducing the noise generated at the air inlet when the air compressor is working.

[0026] The dustproof assembly includes an inner frame 3 , a dustproof net 4 is fixedly installed inside the inner frame 3 , and the inner frame 3 is snap-fitted inside the embedding groove 6 .

[0027] It should be noted that, by providing the limit groove 13, impurities in the incoming gas are filtered and debris in the environment is blocked from entering the air inlet, thereby ensuring the normal operation of the compressor.

[0028] A limiting member for limiting the inner frame 3 is installed on the silencer outer frame 2, and the limiting member includes a limiting plate 5, which is rotatably connected to the front surface of the silencer outer frame 2, and the back of the limiting plate 5 is fixedly connected to a fixing cylinder 9, and the interior of the fixing cylinder 9 is slidably connected to an annular slide plate 10, and the interior of the annular slide plate 10 is fixedly connected to a limiting rod 8, and the outer sleeve of the limiting rod 8 is provided with a telescopic spring 11, which is installed between the inner wall of the fixing cylinder 9 and the annular slide plate 10, and the side of the limiting rod 8 away from the fixing cylinder 9 passes through the limiting plate 5 and extends to the outside and is fixed with a pull plate 7.

[0029] See also Figure 3 The four corners of the front surface of the inner frame 3 are provided with limiting grooves 13 , and one end of the limiting rod 8 away from the limiting plate 5 passes through the fixing tube 9 and is inserted into the limiting groove 13 .

[0030] It should be noted that there are four groups of limiters, which are respectively arranged at the four corners of the front surface of the silencer outer frame 2. The limiters are arranged to limit and fix the inner frame 3, thereby facilitating the installation and removal of the inner frame 3.

[0031] See also Figure 5 The silencer plate 12 is a "Z"-shaped structure, the spacing between the plurality of silencer plates 12 is 10 cm, the silencer plate 12 is an aluminum alloy plate, and a plurality of silencer holes are opened inside the silencer plate 12.

[0032] The Z-shaped design of the sound-absorbing plate 12 can make the sound waves reflect multiple times on its surface, increase the propagation path of the sound waves, thereby reducing the propagation and reflection of the sound, thereby achieving a sound-absorbing effect.

[0033] The working principle of the above embodiment is as follows: when in use, the incoming gas is passed through 15 through the inner frame 3 to filter impurities in the gas. The filtered gas passes through a number of silencer plates 12 before entering the inside of the air compressor body 1 to achieve a silencer effect. The Z-shaped design of the silencer plate 12 can make the sound waves reflect on its surface multiple times, increase the propagation path of the sound waves, and thus reduce the propagation and reflection of the sound. The silencer rock wool 14 has good sound absorption performance, can absorb sound waves in the air, reduce echoes and resonance, and improve the silencer effect at the air inlet through the silencer plate 12 and the silencer rock wool 14, thereby reducing the noise generated at the air inlet when the air compressor is working.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An air compressor with an air intake silencing function, comprising an air compressor body (1), characterized in that: An air inlet is provided on the side wall of the air compressor body (1); a silencer outer frame (2) is installed inside the air inlet; a silencer structure is provided inside the silencer outer frame (2); and a dustproof component is provided inside the silencer outer frame (2); The sound-absorbing structure comprises a sound-absorbing plate (12) and sound-absorbing rock wool (14), wherein the sound-absorbing rock wool (14) is installed on the inner wall of the sound-absorbing outer frame (2), the sound-absorbing plates (12) are provided in a plurality, and the plurality of sound-absorbing plates (12) are installed in the interior of the sound-absorbing outer frame (2) at equal intervals from top to bottom, and an embedding groove (6) is provided on the front surface of the sound-absorbing outer frame (2); The dustproof component comprises an inner frame (3), a dustproof net (4) is fixedly mounted inside the inner frame (3), the inner frame (3) is snap-fitted inside the embedding groove (6), and a limiting member for limiting the inner frame (3) is mounted on the sound-absorbing outer frame (2).

2. The air compressor with air intake silencing function according to claim 1, characterized in that: The limiting member comprises a limiting plate (5), the limiting plate (5) being rotatably connected to the front surface of the silencer outer frame (2), the back surface of the limiting plate (5) being fixedly connected to a fixing cylinder (9), the interior of the fixing cylinder (9) being slidably connected to an annular slide plate (10), the interior of the annular slide plate (10) being fixedly connected to a limiting rod (8), the exterior of the limiting rod (8) being sleeved with a telescopic spring (11).

3. The air compressor with air intake silencing function according to claim 2, characterized in that: The telescopic spring (11) is installed between the inner wall of the fixed cylinder (9) and the annular slide plate (10), and the side of the limiting rod (8) away from the fixed cylinder (9) passes through the limiting plate (5) and extends to the outside and is fixed with a pulling plate (7).

4. The air compressor with air intake silencing function according to claim 2, characterized in that: Limiting grooves (13) are provided at the four corners of the front surface of the inner frame (3), and one end of the limiting rod (8) away from the limiting plate (5) passes through the fixing tube (9) and is inserted into the limiting groove (13).

5. The air compressor with air intake silencing function according to claim 1, characterized in that: The silencer plate (12) is of a "Z"-shaped structure, and the spacing between a plurality of the silencer plates (12) is 10 cm.

6. The air compressor with air intake silencing function according to claim 1, characterized in that: The silencer plate (12) is an aluminum alloy plate, and a plurality of silencer holes are provided inside the silencer plate (12).

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