Silencer of air compressor

Abstract

According to the technical scheme, the air compressor silencer comprises a shell, a covering assembly and filter paper, an opening is formed in one side of the shell, an air inlet hole and an exhaust hole are formed in the rear side of the bottom of the shell, and the inner bottom wall of the shell inclines downwards towards the air inlet hole; the covering assembly comprises a cover body, a frame and a semicircular cylinder, the cover body is detachably arranged on the opening of the shell, and the frame is arranged on the cover body and inserted into and attached to the inner top wall of the shell. The filter paper is supported by the semicircular cylinder to form a downward filtering surface, the filter paper is used for filtering, silencing and filtering dust and sundries, and when air circulates, the filter paper can also shake to a certain extent, so that the dust and the sundries can be naturally shaken off, adhesion is reduced, and the inner bottom wall of the shell is inclined downwards towards the air inlet hole, so that the dust and the sundries are prevented from falling off. Falling dust and sundries slide along the inclined inner bottom wall of the shell, slide into the bottommost air inlet hole and are discharged from the bottommost air inlet hole.

Description

Technical Field

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

[0002] An air compressor is a device that compresses gas. It is widely used to compress gas. It is a device that converts the mechanical energy of the motive force into gas pressure energy. The air compressor will produce a lot of noise when in use. Generally, a muffler is installed at the air inlet to reduce the noise. A sound-absorbing filter is installed inside the muffler to reduce noise. The existing sound-absorbing filter generally adopts the structure of a filter paper net. The incoming air will pass through the filter paper net to achieve filtering and noise reduction.

[0003] For the above-mentioned prior art, after long-term use of sound-absorbing filter elements such as filter paper nets, dust and debris will accumulate in the muffler, resulting in blockage of the muffler pipe, obstruction of air compressor intake, and increased noise of the muffler, requiring regular replacement and cleaning of the filter material. Based on this, in order to extend the service life of the sound-absorbing filter element, reduce the frequency of replacement and cleaning of the filter material, and improve the product quality of the muffler, how to reduce the accumulation of dust and debris in the muffler is a technical problem that needs to be solved. Utility Model Content

[0004] In view of this, it is necessary to provide an air compressor muffler to solve the technical problem of how to reduce the accumulation of dust and debris in the muffler in the prior art.

[0005] In order to achieve the above technical purpose, the technical solution of the utility model provides an air compressor muffler, comprising:

[0006] A shell having an opening on one side and an air inlet and an air outlet respectively formed on the rear side of the bottom, wherein the inner bottom wall of the shell is inclined downward toward the air inlet;

[0007] A cover assembly, comprising a cover body, a frame and a semi-cylinder, wherein the cover body is detachably arranged on the opening of the shell, the frame is arranged on the cover body, inserted into and attached to the inner top wall of the shell, the semi-cylinder is arranged at the bottom of the frame, and a plurality of muffler holes are arranged on the semi-cylinder in an array; and

[0008] The filter paper is clamped on the frame and abuts against the outer circumferential surface of the semi-cylinder to form a downwardly convex arc surface.

[0009] Furthermore, a plurality of honeycomb plates are arranged on the inner side of the semi-cylinder.

[0010] Furthermore, a sealing gasket is provided on the rear side wall of the shell, and the sealing gasket abuts against both the semi-cylinder and the filter paper.

[0011] Furthermore, there are a plurality of air inlet holes, and the plurality of air inlet holes are evenly distributed on the outer side of the shell, and the inner bottom wall of the shell is inclined downward toward the air inlet hole at the bottom.

[0012] Furthermore, a circle of convex edges is arranged on the outer periphery of the shell, a sealing layer is arranged on a side of the convex edge close to the opening, and the sealing layer is in contact with the cover body.

[0013] Furthermore, a plurality of elastic clips are arranged on one side of the cover body close to the shell, and a clip protrusion is arranged on the outer side of the shell, and the elastic clips are clipped with the clip protrusion in a one-to-one correspondence.

[0014] Furthermore, a paddle extends outwardly from the end of the elastic card, and the paddle is in an arc shape.

[0015] Furthermore, the frame is in the shape of a square frame, and two sides of the frame are provided with card slots, and two sides of the filter paper are respectively carded in the two card slots.

[0016] Furthermore, two slots are arranged on the inner top wall of the shell, and the two sides of the frame are respectively plugged into the two slots.

[0017] Furthermore, a sealing strip is provided on the inner side of the slot, and the sealing strip abuts against the frame.

[0018] Compared with the prior art, the utility model has the following beneficial effects: the filter paper is supported by a semi-cylinder to form a filtering surface facing downward, the filter paper performs filtering and silences, filters out dust and debris, and when the gas circulates, the filter paper will also produce a certain vibration, which is conducive to the natural shaking off of dust and debris, reduces adhesion, and is tilted downward toward the air inlet through the inner bottom wall of the shell. The fallen dust and debris slide along the inclined inner bottom wall of the shell, slide into the bottom air inlet, and are discharged from it, reducing the accumulation of dust and debris in the silencer, extending the service life of the sound-absorbing filter element, reducing the frequency of replacing the filter material and cleaning, so as to improve the product quality of the silencer. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional diagram of the structure of the air compressor muffler according to the embodiment of the utility model;

[0020] Figure 2 It is a three-dimensional diagram of the structure of the air compressor muffler according to another perspective of the embodiment of the utility model;

[0021] Figure 3 It is a three-dimensional exploded view of the housing and the cover assembly according to an embodiment of the utility model;

[0022] Figure 4It is a three-dimensional exploded view of the air compressor muffler according to an embodiment of the utility model;

[0023] Figure 5 is a perspective view of an air compressor muffler according to an embodiment of the utility model;

[0024] Figure 6 It is a structural schematic diagram of the frame and filter paper according to an embodiment of the utility model;

[0025] In the figure: 1, housing; 101, opening; 102, air inlet; 103, exhaust hole; 104, sealing gasket; 105, convex edge; 106, card convex; 107, slot;

[0026] 2. Cover assembly; 21. Cover body; 22. Frame; 23. Semi-cylinder; 201. Silence hole; 202. Honeycomb plate; 2101. Elastic card; 2102. Pick; 2201. Card slot;

[0027] 3. Filter paper. DETAILED DESCRIPTION

[0028] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0029] like Figure 1-6As shown, the utility model provides an air compressor silencer, including a shell 1, a cover assembly 2 and filter paper 3. One side of the shell 1 has an opening 101, and the rear side of its bottom is respectively provided with an air inlet hole 102 and an exhaust hole 103. The inner bottom wall of the shell 1 is inclined downward toward the air inlet hole 102. The gas enters the silencer from the air inlet hole 102, and is filtered and silenced by the filter paper 3 therein, and dust and debris are filtered out, which is beneficial to its downward surface. When the gas circulates, the filter paper 3 itself will also produce a certain vibration, so it is beneficial to the natural shaking off of dust and debris and reduce adhesion. When the air compressor is turned off, the fallen dust and debris slide along the inclined inner bottom wall of the shell 1, slide into the air inlet hole 102 at the bottom, and are discharged therefrom, thereby reducing the accumulation of dust and debris in the silencer, extending the service life of the sound-absorbing filter element, and reducing the frequency of replacing the filter material and cleaning, so as to improve the product quality of the silencer. The silencer adopts a split structure composed of a shell 1 and a cover assembly 2. Specifically, the cover assembly 2 includes a cover body 21, a frame 22 and a semi-cylinder 23. The cover body 21 is detachably arranged on the opening 101 of the shell 1 and can be installed in a snap-fit ​​manner; the frame 22 is fixed on the cover body 21, and the frame 22 and the cover body 21 can be made in an integrally formed manner; the frame 22 is inserted into and attached to the inner top wall of the shell 1, at which time the cover body 21 is closed with the opening 101 and snap-fitted to the shell 1; the semi-cylinder 23 is arranged At the bottom of the frame 22, a plurality of silencer holes 201 are arranged in an array on the semi-cylinder 23. After the filter paper 3 is filtered and silenced for the first time, the silencer holes 201 are used to perform a second silencer to improve the silencer effect. The filter paper 3 is mounted on the frame 22 and abuts against the outer circumferential surface of the semi-cylinder 23 to form a downwardly convex arc surface, forming an arc surface facing downward. With an effective filtering area, the filtering surface faces downward to facilitate the downward falling of dust and debris, and the filter paper 3 can be disassembled and replaced.

[0030] Furthermore, in order to improve the structural strength of the semi-cylinder 23 and the silencer effect of the silencer, a plurality of honeycomb perforated plates 202 are arranged on the inner side of the semi-cylinder 23, one side of the honeycomb perforated plates 202 coincides with the axis of the semi-cylinder 23, and the other side is fixed to the inner wall of the semi-cylinder 23, and the plurality of honeycomb perforated plates 202 are distributed in a circle to form an internal support for the semi-cylinder 23, and the third level of silencer is performed by the honeycomb perforated plates 202, and the filter paper 3, the silencer holes 201 on the semi-cylinder 23 and the honeycomb perforated plates 202 form a triple silencer, which has a better silencer effect.

[0031] In this embodiment, in order to facilitate the assembly and disassembly of the cover body 21 and the shell 1, a plurality of elastic cards 2101 are provided on the side of the cover body 21 close to the shell 1, and a latch protrusion 106 is provided on the outer side of the shell 1. The elastic cards 2101 are engaged with the latch protrusion 106 in a one-to-one manner, and the cover body 21 and the shell 1 are installed through the elastic latch. Similarly, the elastic cards 2101 can be pushed in the opposite direction to release the latch protrusion 106, so that the cover body 21 can be removed from the shell 1.

[0032] Furthermore, a paddle 2102 extends outward from the end of the elastic card 2101 , and the paddle 2102 is in an arc shape, so as to facilitate the reverse movement of the elastic card 2101 .

[0033] In this embodiment, in order to achieve a sealing effect when the cover assembly 2 is inserted, a sealing gasket 104 is provided on the rear side wall of the shell 1, and the sealing gasket 104 abuts against both the semi-cylinder 23 and the filter paper 3 to seal the gap between the shell 1 during insertion.

[0034] Furthermore, in order to improve the sealing effect, a circle of flange 105 is provided on the outer periphery of the shell 1, and a sealing layer is provided on the side of the flange 105 close to the opening 101, and the sealing layer abuts against the cover body 21. When the cover body 21 is clamped on the end of the shell 1, the edge of the cover body 21 abuts against the sealing layer on the flange 105 to form a seal.

[0035] In this embodiment, in order to increase the number of air inlet holes 102 and increase the air intake volume, the number of the air inlet holes 102 is multiple, and the multiple air inlet holes 102 are evenly distributed on the outside of the shell 1, and the inner bottom wall of the shell 1 is inclined downward toward the air inlet hole at the bottom. Under the arrangement of multiple air inlet holes 102, the inclination of the inner bottom wall of the shell 1 can be towards the lowest air inlet hole 102.

[0036] In this embodiment, in order to facilitate the installation and removal of the filter paper 3, the frame 22 is in the shape of a square frame, and slots 2201 are provided on both sides of the frame 22. The two sides of the filter paper 3 are respectively connected to the two slots 2201. When the filter paper 3 needs to be replaced, it can be pulled out from the slots 2201.

[0037] Furthermore, in order to insert the frame 22 , two slots 107 are provided on the inner top wall of the housing 1 , and the two sides of the frame 22 are respectively plugged into the two slots 107 to guide and limit the installation position of the frame 22 .

[0038] Furthermore, a sealing strip is provided inside the slot 107 , and the sealing strip abuts against the frame 22 to perform a sealing function.

[0039] The specific working process of the utility model is as follows: the gas enters the closed space between the shell 1 and the cover 21 from the air inlet 102, passes through the filter paper 3, the silencer hole 201 on the semi-cylinder 23 and the honeycomb plate 202, and finally enters the air inlet duct of the air compressor from the exhaust hole 103 to achieve the silencer effect; wherein, the filter paper 3 is in an arc shape, and the filtering surface faces downward, so that the attachment of dust and debris thereon is reduced, and when the gas circulates, the shaking of the filter paper 3 will also cause the dust and debris to fall off, and in the shell 1, a design inclined toward the lowest air inlet 102 is adopted, so that the fallen dust and debris slides out along the inclined surface to the lowest air inlet 102, thereby reducing the accumulation of internal dust and debris, extending the service life of the sound-absorbing filter element, reducing the frequency of replacing the filter material and cleaning, and improving the product quality of the silencer.

[0040] The entire workflow is completed, and the contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0041] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. An air compressor muffler, characterized in that: include: A shell having an opening on one side and an air inlet and an air outlet respectively formed on the rear side of the bottom, wherein the inner bottom wall of the shell is inclined downward toward the air inlet; A cover assembly, comprising a cover body, a frame and a semi-cylinder, wherein the cover body is detachably arranged on the opening of the shell, the frame is arranged on the cover body, inserted into and attached to the inner top wall of the shell, the semi-cylinder is arranged at the bottom of the frame, and a plurality of muffler holes are arranged on the semi-cylinder in an array; and The filter paper is clamped on the frame and abuts against the outer circumferential surface of the semi-cylinder to form a downwardly convex arc surface.

2. The air compressor muffler according to claim 1, characterized in that: A plurality of honeycomb plates are arranged on the inner side of the semi-cylinder.

3. The air compressor muffler according to claim 2, characterized in that: A sealing gasket is arranged on the rear side wall of the shell, and the sealing gasket abuts against both the semi-cylinder and the filter paper.

4. The air compressor muffler according to claim 3, characterized in that: There are multiple air inlet holes, which are evenly distributed on the outer side of the shell, and the inner bottom wall of the shell is inclined downward toward the air inlet hole at the bottom.

5. The air compressor muffler according to claim 4, characterized in that: A circle of convex edge is arranged on the outer periphery of the shell, a sealing layer is arranged on a side of the convex edge close to the opening, and the sealing layer is in contact with the cover body.

6. The air compressor muffler according to claim 5, characterized in that: A plurality of elastic clips are arranged on one side of the cover body close to the shell, and a clip protrusion is arranged on the outer side of the shell, and the elastic clips are clipped with the clip protrusion in a one-to-one corresponding manner.

7. The air compressor muffler according to claim 6, characterized in that: A paddle extends outwardly from the end of the elastic card, and the paddle is in an arc shape.

8. The air compressor muffler according to claim 7, characterized in that: The frame is in the shape of a square frame, and two sides of the frame are provided with card slots, and two sides of the filter paper are respectively carded in the two card slots.

9. The air compressor muffler according to claim 8, characterized in that: Two slots are arranged on the inner top wall of the shell, and the two sides of the frame are respectively plugged into the two slots.

10. The air compressor muffler according to claim 9, characterized in that: A sealing strip is arranged inside the slot, and the sealing strip abuts against the frame.

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