Silencing structure of air compressor

Abstract

The utility model relates to the technical field of air compressor accessories, in particular to a noise reduction structure of an air compressor, the noise reduction structure is installed at the air inlet end of the air compressor, a noise reduction main body comprises a shell and a filtering mechanism, the shell comprises a base and a cover body, a groove for containing a noise reduction core is formed in the base, and a plurality of air inlets are formed in the center of the bottom of the groove; an air outlet is formed in the side face of the groove, and the silencing cores are annularly distributed on the periphery of the air inlet; the filtering mechanism is mounted at the air inlet of the shell and comprises a mounting frame and an annular filter element, the mounting frame comprises a bottom plate and a connecting rod in the center of the bottom plate, limiting baffles are annularly distributed on the periphery of the bottom plate and are of a net-shaped structure, and the end, away from the bottom plate, of the connecting rod penetrates through the shell; the side, away from the filtering mechanism, of the shell is connected with a connecting rod through a locking nut, and a thread matched with the locking nut is arranged at the free end of the connecting rod. According to the silencing structure, air entering the silencing core can be filtered, impurities entering the silencing core are reduced, the performance of the silencing structure is improved, and the service life of the silencing structure is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of air compressor accessories, and in particular to a silencer structure of an air compressor. Background Art

[0002] Air compressors are widely used in people's production and life. Since air compressors inhale a large amount of air during operation, unstable airflow will be generated around the suction pipe, which will generate a lot of noise. Therefore, people install a muffler on the suction pipe to reduce the noise.

[0003] Chinese patent CN204692036U discloses an air compressor muffler. The key technical features of the muffler are a housing, a cover, and a muffler core. The housing has a connecting rod at the bottom, the muffler core is disposed within the housing, the housing has a first limiting rib at the bottom that interferes with the muffler core, the cover has a second limiting rib that interferes with the muffler core, the cover has ventilation holes, and the muffler core is an asbestos muffler pad. Existing mufflers for air compressors are threadedly connected to the air inlet on the side of the air compressor. Air is often filtered through a filter paper mesh disposed within the muffler structure. The incoming air first enters the effector and then passes through the filter paper mesh. Dust in the air can accumulate within the muffler, affecting the normal air intake of the air compressor. Utility Model Content

[0004] In order to overcome the problems existing in the prior art, the present application provides a silencer structure for an air compressor.

[0005] The present application provides an air compressor silencer structure that adopts the following technical solution:

[0006] A silencer structure for an air compressor, which is installed at the air inlet end of the air compressor, includes a silencer body, the silencer body includes a shell and a filter mechanism installed at the air inlet end of the shell, the shell includes a base and a cover body, wherein the base is provided with a groove for accommodating a silencer core, the bottom center of the groove is provided with several groups of air inlets, the side of the groove is provided with an air outlet, and the silencer cores are distributed in an annular manner around the air inlet; the filter mechanism, the filter mechanism is installed at the air inlet of the shell, includes a mounting frame detachably connected to the base of the silencer body and an annular filter element set in the mounting frame, wherein the mounting frame includes a bottom plate and a connecting rod in the center of the bottom plate, limit baffles are distributed in an annular manner around the bottom plate, and the limit baffles are a mesh structure, the end of the connecting rod away from the bottom plate passes through the shell, and the side of the shell away from the filter mechanism is connected to the connecting rod through a locking nut, and the free end of the connecting rod is provided with a thread adapted to the locking nut.

[0007] By adopting the above technical solution, a silencer structure is installed at the air inlet of an air compressor, which can reduce the noise generated by the large amount of air intake during operation. The silencer body connects the housing containing the silencer core to the air compressor, and a filter mechanism is installed at the air inlet end of the housing to filter the air entering the silencer core, reducing impurities entering the silencer core and ensuring the normal operation of the silencer structure. The filter mechanism is fixed to the housing by a connecting rod extending through the center of the base plate and fixed to the connecting rod at the other end of the housing by a locking nut. When the filter mechanism is in operation, air is introduced through the surrounding limit baffles, filtered by the annular filter core, and then introduced through the air inlet of the housing. A groove in the base of the housing is used to accommodate the silencer core. The housing introduces air filtered by the filter mechanism through the air inlet at the bottom of the groove. After the air is noise-reduced by the silencer core, it enters the air compressor through the air outlet on the side of the groove.

[0008] Preferably, the connecting rod includes a first tube body located at the filter mechanism part and a second tube body located at the muffler main body part, wherein the outer diameter of the first tube body is larger than that of the second tube body.

[0009] Preferably, sealing grooves are provided at the connections between the second tube body and the bottom plate and cover of the shell, and the sealing grooves are filled with sealing rings.

[0010] By adopting the above technical solution, the first tube body with a larger diameter in the connecting rod is located in the filter mechanism, and the second tube body with a smaller diameter is adapted to and passes through the perforations on the bottom plate and the top cover of the shell. The filter mechanism and the shell are then fixed together by connecting the end of the second tube body with a locking nut, wherein a sealing groove for filling a sealing ring is provided at the connection between the second tube body and the perforation on the shell, thereby ensuring the sealing inside the shell and avoiding additional noise caused by air leakage.

[0011] Preferably, the annular filter element is provided with a fine grid mesh and a sponge adsorption mesh in sequence from the outside to the inside, and the annular filter element is arranged in the limiting baffles around the bottom plate.

[0012] Preferably, a receiving cavity for receiving the annular filter element is provided in the limiting baffle, and the opening of the receiving cavity is provided on a side close to the bottom plate, and an annular baffle is provided at the opening of the receiving cavity, and the annular baffle is threadedly connected to the bottom plate.

[0013] By employing this technical solution, the fine mesh and sponge adsorption net used in the annular filter element can filter and absorb moisture and dust from the incoming air, preventing it from affecting the built-in sound-absorbing structure. Furthermore, the opening of the accommodating cavity defined by the retaining baffle faces one side of the base plate, allowing the annular filter element to be positioned within the accommodating cavity by the annular baffle at the opening. The threaded connection between the annular baffle and the base plate also facilitates replacement of the annular filter element.

[0014] Preferably, the silencer core adopts an annular asbestos silencer pad, and the groove surface and the bottom of the cover body are both provided with arc-shaped limiting ribs for limiting the silencer core.

[0015] Preferably, several groups of air outlets are provided on the side of the groove, and ventilation chute is provided between the air outlet and the groove.

[0016] By adopting the above technical solution, the silencer core adopts an asbestos silencer pad, and the top and bottom of the silencer core are respectively limited and fixed by the arc-shaped limiting ribs on the groove surface and the bottom surface of the cover body, so that the air entering the shell can pass through the silencer core stably and be discharged from the air outlet. The inclined groove of the air outlet can play a good drainage role, and the air outlet is provided with several groups that can adapt to multi-cylinder air compressors, so that the air intake silencer requirements of the multi-cylinder air compressor can be met by a silencer structure.

[0017] Preferably, the periphery of the groove is connected to the shell via a connecting bracket, wherein a positioning groove is provided on the connecting bracket, and positioning rods corresponding to the positioning groove are distributed in an annular manner around the cover body.

[0018] By adopting the above technical solution, the connecting bracket between the groove and the shell improves the stability of the groove in the shell, and the positioning grooves opened on the connecting bracket cooperate with the positioning rods around the bottom of the cover body to achieve the connection and positioning between the cover body and the base, thereby improving the stability of the connection between the two.

[0019] In summary, this application includes at least one of the following beneficial technical effects:

[0020] 1. This application installs a filter mechanism at the air inlet end of the shell of the silencer body to filter the air entering the silencer core, thereby reducing impurities entering the silencer core and ensuring the normal operation of the silencer structure;

[0021] 2. This application uses a connecting rod at the center of the filter mechanism bottom plate to penetrate the housing, and is fixed to the connecting rod at the other end of the housing through a locking nut, thereby fixing the filter mechanism to the housing, thereby improving the convenience of connecting the filter mechanism and the silencer body;

[0022] 3. The air at the air inlet end of the silencer structure of this application is filtered by the annular filter element inside the limiting baffles around the filter mechanism before being introduced, which increases the air intake of the filter mechanism and avoids the filter mechanism blocking the air and affecting the normal operation of the air compressor;

[0023] 4. This application can adapt to multi-cylinder air compressors by setting multiple groups of air outlets on the silencer structure, so that the air intake silencer requirements of the multi-cylinder air compressors can be met by one silencer structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1This is a structural diagram of an air compressor silencer structure installed on the air compressor;

[0025] Figure 2 It is a schematic diagram of the overall structure of the silencer structure of an air compressor;

[0026] Figure 3 This is an exploded view of the silencer structure of an air compressor;

[0027] Figure 4 This is an exploded view of the bottom side of the silencer structure of an air compressor;

[0028] Figure 5 This is an exploded view of the filter mechanism in the silencer structure of an air compressor.

[0029] Explanation of the accompanying symbols: 1. Silencer body; 2. Shell; 21. Base; 211. Groove; 212. Air inlet; 213. Air outlet; 214. Silencer core; 215. Ventilation chute; 22. Cover; 221. Positioning rod; 23. Arc-shaped limiting rib; 24. Connecting bracket; 241. Positioning groove; 3. Filter mechanism; 31. Mounting frame; 311. Annular filter element; 3111. Fine grid; 3112. Sponge adsorption net; 312. Bottom plate; 3121. Limit baffle; 3122. Accommodating chamber; 3123. Annular baffle; 313. Connecting rod; 3131. Locking nut; 3132. First tube body; 3133. Second tube body; 3134. Sealing groove; 3135. Sealing ring. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-5 This application is described in further detail.

[0031] The embodiments of the present application disclose a silencer structure for an air compressor.

[0032] Reference Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5, a silencer structure of an air compressor, the silencer structure is installed at the air inlet end of the air compressor, including a silencer body 1, the silencer body 1 includes a shell 2 and a filter mechanism 3 installed at the air inlet end of the shell 2, the shell 2 includes a base 21 and a cover 22, wherein the base 21 is provided with a groove 211 for accommodating a silencer core 214, the bottom center of the groove 211 is provided with a plurality of groups of air inlets 212, the side of the groove 211 is provided with an air outlet 213, and the silencer core 214 is distributed in an annular manner around the air inlet 212; the filter mechanism 3 is installed at the air inlet 212 of the shell 2, including It includes a mounting frame 31 detachably connected to the base 21 of the silencer body 1 and an annular filter element 311 mounted in the mounting frame 31, wherein the mounting frame 31 includes a bottom plate 312 and a connecting rod 313 in the center of the bottom plate 312, and a limiting baffle 3121 is distributed in an annular manner around the bottom plate 312, and the limiting baffle 3121 is a mesh structure, the end of the connecting rod 313 away from the bottom plate 312 passes through the shell 2, and the side of the shell 2 away from the filter mechanism 3 is connected to the connecting rod 313 through a locking nut 3131, and the free end of the connecting rod 313 is provided with a thread adapted to the locking nut 3131. The silencer structure is installed at the air inlet 212 of the air compressor, which can reduce the noise generated by the large amount of air intake when the air compressor is operating. The silencer body 1 connects the housing 2 with the silencer core 214 installed, and the air compressor. A filter mechanism 3 is installed at the air inlet end of the housing 2 to filter the air entering the silencer core 214, reducing impurities entering the silencer core 214 and ensuring the normal operation of the silencer structure. The filter mechanism 3 is installed by installing a mesh-structured limit baffle 3121 around the bottom plate 312 of the mounting frame 31, and an annular filter element 311 is installed within the limit baffle 3121. The center of the bottom plate 312 passes through the housing 2 through a connecting rod 313, and is fixed to the connecting rod 313 at the other end of the housing 2 by a locking nut 3131, thereby fixing the filter mechanism 3 to the housing 2. When the filter mechanism 3 is in operation, air is introduced through the limit baffle 3121 around it and is filtered by the annular filter element 311 before being introduced from the air inlet 212 of the housing 2. The groove 211 on the base 21 of the shell 2 is used to accommodate the silencer core 214. The shell 2 introduces air filtered by the filter mechanism 3 through the air inlet 212 at the bottom of the groove 211. After the air is reduced in noise by the silencer core 214, it enters the air compressor from the air outlet 213 on the side of the groove 211.

[0033] Reference Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5The connecting rod 313 comprises a first tube 3132 located within the filter mechanism 3 and a second tube 3133 located within the muffler body 1. The first tube 3132 has a larger outer diameter than the second tube 3133. Sealing grooves 3134 are defined at the junctions between the second tube 3133 and the bottom plate 312 and cover 22 of the housing 2. These grooves are filled with sealing rings 3135. The first tube 3132, with its larger diameter, is located within the filter mechanism 3. The second tube 3133, with its smaller diameter, fits within and passes through perforations in the bottom plate 312 and cover 2 of the housing 2. The end of the second tube 3133 is then connected to a locking nut 3131, securing the filter mechanism 3 to the housing 2. A sealing groove 3134, containing a sealing ring 3135, is defined at the junctions between the second tube 3133 and the perforations in the housing 2. This ensures a tight seal within the housing 2 and prevents additional noise from air leaks.

[0034] Reference Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 The annular filter element 311 is sequentially equipped with a fine mesh 3111 and a sponge adsorption mesh 3112 from the outside to the inside. The annular filter element 311 is placed within a limiting baffle 3121 surrounding the bottom plate 312. A chamber 3122 for accommodating the annular filter element 311 is defined within the limiting baffle 3121. The opening of the chamber 3122 is located on the side close to the bottom plate 312. An annular baffle 3123 is located at the opening of the chamber 3122, which is threadedly connected to the bottom plate 312. The fine mesh 3111 and sponge adsorption mesh 3112 used in the annular filter element 311 filter and absorb moisture and dust from the incoming air, preventing them from affecting the built-in sound-absorbing structure. In addition, the opening of the accommodating cavity 3122 opened in the limiting baffle 3121 faces one side of the bottom plate 312. The annular filter element 311 placed in the accommodating cavity 3122 can be limited by the annular baffle 3123 at the opening of the accommodating cavity 3122. The threaded connection between the annular baffle 3123 and the bottom plate 312 also facilitates the replacement of the annular filter element 311.

[0035] Reference Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5The silencer core 214 adopts an annular asbestos silencer pad, and the surface of the groove 211 and the bottom of the cover 22 are provided with arc-shaped limiting ribs 23 for limiting the silencer core 214. There are two groups of air outlets 213 on the side of the groove 211, and a ventilation inclined groove 215 is provided between the air outlet 213 and the groove 211. The silencer core 214 adopts an asbestos silencer pad, and the top and bottom of the silencer core 214 are respectively limited and fixed by the arc-shaped limiting ribs 23 on the surface of the groove 211 and the bottom of the cover 22, so that the air entering the shell 2 can stably pass through the silencer core 214 and be discharged from the air outlet 213. The inclined groove of the air outlet 213 can play a good drainage role, and the air outlet 213 is provided with a group that can adapt to the two-cylinder air compressor, so that the air intake silencer requirements of the two-cylinder air compressor can be met by a silencer structure.

[0036] Reference Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 The periphery of the groove 211 is connected to the housing 2 via a connecting bracket 24. Positioning grooves 241 are defined on the connecting bracket 24, and positioning rods 221 corresponding to the positioning grooves 241 are distributed in an annular pattern around the cover 22. The connecting bracket 24 between the periphery of the groove 211 and the housing 2 improves the stability of the groove 211 within the housing 2. Furthermore, the positioning grooves 241 defined on the connecting bracket 24 cooperate with the positioning rods 221 around the bottom of the cover 22 to achieve a fixed connection between the cover 22 and the base 21, thereby improving the stability of the connection between the two.

[0037] Working Principle: During installation, first, insert the upper and lower surfaces of the annular silencer core 214 into the bottom surface of the groove 211 and the arc-shaped limiting rib 23 at the bottom of the cover plate, respectively. Simultaneously, install the cover body 22 onto the base 21, with the positioning rod 221 at the bottom of the cover body 22 matingly engaging with the positioning groove 241 on the base 21. Next, install the filter mechanism 3, insert the sealing ring 3135 into the sealing groove 3134 on the second tube 3133 of the connecting rod 313, and insert the second tube 3133 through the through-hole in the housing 2. One end face of the first tube 3132 on the connecting rod 313 presses against the bottom surface of the housing 2. The free end of the connecting rod 313 is secured to the housing 2 via the locking nut 3131. The annular filter element 311 is placed in the accommodating cavity 3122 in the limiting baffle 3121 around the bottom plate 312, and the annular filter element 311 is limited in the accommodating cavity 3122 through the annular baffle 3123 and the bottom plate 312 around the threaded connection, and finally the silencer body 1 is installed on the air compressor.

[0038] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A silencer structure for an air compressor, the silencer structure being installed at the air inlet end of the air compressor, characterized in that: include A silencer body (1), the silencer body (1) comprising a shell (2) and a filter mechanism (3) mounted on an air inlet end of the shell (2), the shell (2) comprising a base (21) and a cover (22), wherein the base (21) is provided with a groove (211) for accommodating a silencer core (214), a plurality of groups of air inlets (212) are provided at the center of the bottom of the groove (211), an air outlet (213) is provided on a side of the groove (211), and the silencer cores (214) are distributed in an annular manner around the air inlets (212); A filter mechanism (3) is mounted on the air inlet (212) of the housing (2), comprising a mounting frame (31) detachably connected to the base (21) of the silencer body (1) and an annular filter element (311) mounted within the mounting frame (31), wherein the mounting frame (31) comprises a bottom plate (312) and a connecting rod (313) at the center of the bottom plate (312), and a limiting baffle (3121) is distributed annularly around the bottom plate (312), and the limiting baffle (3121) is a mesh structure, an end of the connecting rod (313) away from the bottom plate (312) passes through the housing (2), and a side of the housing (2) away from the filter mechanism (3) is connected to the connecting rod (313) via a locking nut (3131), and a free end of the connecting rod (313) is provided with a thread adapted to the locking nut (3131).

2. The air compressor silencer structure according to claim 1, characterized in that: The connecting rod (313) comprises a first tube body (3132) located in the filter mechanism (3) portion and a second tube body (3133) located in the muffler body (1) portion, wherein the outer diameter of the first tube body (3132) is greater than that of the second tube body (3133).

3. The air compressor silencer structure according to claim 2, characterized in that: Sealing grooves (3134) are provided at the connection points between the second tube (3133), the bottom plate (312) of the shell (2), and the cover (22), and the sealing grooves (3134) are filled with sealing rings (3135).

4. The air compressor silencer structure according to claim 1, characterized in that: The annular filter element (311) is provided with a fine grid mesh (3111) and a sponge adsorption mesh (3112) in sequence from the outside to the inside, and the annular filter element (311) is arranged within the limiting baffles (3121) around the bottom plate (312).

5. The air compressor silencer structure according to claim 4, characterized in that: An accommodating cavity (3122) for accommodating the annular filter element (311) is provided in the limiting baffle (3121), and the opening of the accommodating cavity (3122) is arranged on a side close to the bottom plate (312), and an annular baffle (3123) is provided at the opening of the accommodating cavity (3122), and the annular baffle (3123) is threadedly connected to the bottom plate (312) around its periphery.

6. The air compressor silencer structure according to claim 1, characterized in that: The silencer core (214) adopts an annular asbestos silencer pad, and arc-shaped limiting ribs (23) for limiting the silencer core (214) are provided on the surface of the groove (211) and the bottom of the cover body (22).

7. The air compressor silencer structure according to claim 6, characterized in that: Several groups of air outlets (213) are provided on the side of the groove (211), and a ventilation chute (215) is provided between the air outlet (213) and the groove (211).

8. The air compressor silencer structure according to claim 1, characterized in that: The groove (211) is connected to the housing (2) around its periphery via a connecting bracket (24), wherein a positioning groove (241) is provided on the connecting bracket (24), and positioning rods (221) corresponding to the positioning groove (241) are distributed in an annular manner around the cover (22).

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