Foaming ceramic silencer for air compressor

Abstract

The utility model discloses a foaming ceramic silencer for an air compressor, which relates to the technical field of air compressor silencers, and comprises a silencer, an external thread is arranged on the outer side of the silencer, the silencer is made of foaming ceramic, the silencer is in threaded connection with a side plate through the thread, a clamp spring is fixedly arranged in the silencer, and the clamp spring is connected with the side plate. The automobile silencer has the advantages that the sealing performance of the first cylinder can be improved through the sealing gasket, the stability of the first cylinder can be better guaranteed by improving the sealing performance of the first cylinder, noise generated by the silencer is avoided, and the automobile silencer is convenient to use and high in practicability. The foamed ceramic is used as the sound-absorbing material, noise can be converted into heat energy when passing through the sound-absorbing material, so that noise elimination or attenuation is achieved, and compared with sound-absorbing materials such as sound-insulating paper, sound-insulating felt, sound-insulating cotton and sound-insulating fiber, the foamed ceramic is not prone to damage and has the longer service life and the better application environment.

Description

Technical Field

[0001] The utility model relates to the technical field of air compressor silencers, in particular to a foamed ceramic silencer for an air compressor. Background Art

[0002] The air compressor is a kind of high-noise equipment, with high noise (high sound level), wide frequency, and long propagation distance. When working, the noise generally reaches more than 88dB (A), which seriously affects the physical and mental health of the staff and even causes safety accidents. It is a heavy burden on production activities. The noise at the air inlet and outlet of the air compressor when working is due to the pressure difference between the inside and outside of the cylinder at the air inlet and outlet, which makes the local air flow unstable and vibrates. The noise at the air inlet shows a certain low-frequency characteristic, with an intensity between 73 and 123dB (A). The noise at the exhaust port shows medium and high frequency characteristics, the noise frequency is relatively complex, and the intensity is between 75 and 105dB (A). For the noise generated by the air inlet and outlet, the noise is generally reduced or eliminated by installing a muffler. The principle is that when the sound wave passes through the muffler, part of the sound wave collides and rubs in the gap of the material, and the sound energy is converted into heat energy and dissipated, so that the sound wave passing through the muffler is weakened.

[0003] Honeycomb ceramics, as a type of porous ceramics, has a porosity of about 70%. The unique porous structure has a dispersing effect on noise sound waves. Generally, the higher the porosity, the better the noise elimination effect. Patent CN212029825U discloses a fresh air purification device with a muffler function. Its technical solution uses honeycomb ceramics as a sound-absorbing filler to reduce and eliminate the noise of the device, which has a good effect. Other industrial equipment such as crushing and screening machines, transformers, sand mills, etc. have been designed to use honeycomb ceramics as a sound-absorbing layer or sound-absorbing filler to reduce equipment noise, which also has a noise reduction effect.

[0004] Foamed ceramics are another type of porous ceramics, with a porosity of more than 80% and up to 95%. They have better sound-absorbing effects than honeycomb ceramics. Foamed ceramics with a thickness of 100mm can reduce noise by 10 to 30dB (A). At present, foamed ceramics are mostly used as whole blocks or whole plates as indoor sound insulation and sound-absorbing panels, and are gradually being promoted as sound barriers in traffic noise scenes such as highways, high-speed railways, and airports. Their sound absorption, sound insulation, and sound-absorbing effects are recognized. The main characteristics of foamed ceramics in this scene are large size (up to 3600mm×1800mm / sheet), simple structure (plate thickness of 5 to 30mm), and easy installation (splicing, fitting, gluing, etc.).

[0005] However, for single equipment that generates noise, such as air compressors, if large-sized, single-structured plate / block foamed ceramics are embedded into soundproof rooms or soundproof enclosures, and the entire equipment is placed in them, although noise reduction can be achieved, it will also cause new problems such as large floor space and large space occupied, and the amount of consumables is large, and the cost of equipment installation and configuration increases. Therefore, installing silencers at the main source of noise generated by air compressors (air inlet and outlet) can achieve noise reduction without increasing floor space and space, while saving consumables, which is the preferred equipment configuration.

[0006] The existing silencer principle for the air inlet and outlet of the air compressor is to change the noise spectrum by constructing a silencer with a cavity and a hole structure to achieve the noise attenuation effect. Patent CN205207088U discloses an air compressor silencer, which is characterized in that the outer shell of the silencer and the silencer inner tube form a cavity, and at the same time, a number of small holes are evenly distributed on the silencer inner tube. When the sound passes through the small holes, the noise frequency changes, thereby reducing the sound frequency band that has a serious impact on the human ear. The core of this technical solution is the small hole silencer, which has a good effect on the noise reduction of the air compressor inlet and outlet, but its porous silencer pipe is still relatively complicated in processing and manufacturing, and the silencer as a whole is connected by multiple parts. This structure is relatively time-consuming during installation and implementation. Patent CN220470153U discloses an air compressor silencer, which is characterized in that a sound absorbing board fixing groove and a fixing plate are provided in the silencer shell, and a number of sound absorbing boards are used to exert an attraction effect, and the sealing of the structure is improved by a threaded structure. However, the manufacture and installation of the sound-absorbing panel groove and the sound-absorbing panel inside the silencer shell are relatively complicated, and the structure needs to be improved. Utility Model Content

[0007] In response to the problem of complex structure caused by the porous and hollow structure of the silencer used for the air inlet and outlet of the air compressor described in the above background technology, the utility model adopts a foamed ceramic structure with a high porosity to replace the porous and hollow structure that requires special construction, and provides a foamed ceramic silencer for an air compressor.

[0008] To achieve the above objectives, the utility model is implemented through the following technical solutions: a foamed ceramic silencer for an air compressor, comprising a silencer, the outer side of the silencer is provided with an external thread, the silencer material is foamed ceramic, the silencer is threadedly connected to the side plate through a thread, a retaining spring is fixedly installed inside the silencer, a square-edged silencer plate is fixedly installed on one side of the retaining spring, a threaded head is fixedly installed on one side of the silencer, a first cylindrical tube is fixedly installed on one side of the side plate, a plurality of cylindrical holes are opened on the outer side of the first cylindrical tube, and a sealing gasket is provided inside the side plate.

[0009] Preferably, the spacing between the plurality of square-edge sound-absorbing panels is the same, and the material of the square-edge sound-absorbing panels is foamed ceramic.

[0010] Preferably, a shock absorbing film is provided on the inner wall of the muffler.

[0011] Preferably, the diameters of the plurality of square-edge sound-absorbing panels are different.

[0012] The utility model provides a foamed ceramic muffler for an air compressor, which has the following beneficial effects:

[0013] 1. By using foamed ceramics with different structures to silence noise in different intervals, the noise will be subject to different silencing effects when the noise is transmitted due to its different positions. The foamed ceramic silencing adapted to the input and output ports can silence noise of different frequencies, thereby achieving silencing of noise in different frequency bands.

[0014] 2. The foamed ceramic silencer for the air compressor can increase the sealing performance of the first cylindrical tube by using a sealing gasket. By increasing its sealing performance, its stability can be better guaranteed to avoid the noise generated by the silencer itself. By using foamed ceramic as a sound-absorbing material, the noise can be converted into heat energy when passing through the sound-absorbing material, thereby achieving noise elimination or attenuation. Compared with sound-absorbing materials such as sound-insulating paper, sound-insulating felt, sound-insulating cotton, and sound-insulating fiber, foamed ceramic is less prone to damage, has a longer service life, and a better application environment and market environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a front view of the utility model.

[0017] In the figure: 1, silencer; 2, side plate; 3, first cylindrical tube; 4, retaining spring; 5, square-edged silencer plate; 6, threaded head; 7, cylindrical tube hole. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0019] Embodiment 1:

[0020] See also Figure 1 to Figure 2The utility model provides a technical solution: a foamed ceramic silencer for an air compressor, comprising a silencer 1, an outer side of the silencer 1 is provided with an external thread, the silencer 1 is made of foamed ceramic, the silencer 1 is threadedly connected to a side plate 2 through a thread, a retaining spring 4 is fixedly installed inside the silencer 1, a square-edged silencer plate 5 is fixedly installed on one side of the retaining spring 4, a threaded head 6 is fixedly installed on one side of the silencer 1, a first cylindrical tube 3 is fixedly installed on one side of the side plate 2, a plurality of cylindrical tube holes 7 are opened on the outer side of the first cylindrical tube 3, a sealing gasket is arranged inside the side plate 2, the sealing gasket can be used to increase the sealing performance of the first cylindrical tube 3, and the stability can be better guaranteed by increasing its sealing performance, and the noise generated by the silencer itself can be avoided, and the foamed ceramic is used as the sound-absorbing material, Noise energy is converted into heat energy when passing through the sound-absorbing material, thereby achieving noise elimination or attenuation. Compared with sound-absorbing materials such as sound-proofing paper, sound-proofing felt, sound-proofing cotton, and sound-proofing fiber, foamed ceramics are less susceptible to damage, have a longer service life, and a better application environment and market environment. The spacing between multiple square-edge sound-absorbing panels 5 is the same, and the material of the square-edge sound-absorbing panels 5 is foamed ceramics. By utilizing foamed ceramics with different structures to silence noise in different intervals, the sound-absorbing effects of noise during transmission are different due to their different positions. The foamed ceramic silencers adapted to the input and output ports can silence noises of different frequencies, thereby achieving silencer for noises of different frequency bands. A shock-absorbing membrane is arranged on the inner wall of the silencer 1, and the diameters of the multiple square-edge sound-absorbing panels 5 are different.

[0021] In summary, when the foamed ceramic silencer for the air compressor is used, the sealing gasket can first be used to increase the sealing performance of the first cylindrical tube 3 to prevent the silencer 1 from generating noise itself. The foamed ceramic is used as the sound-absorbing material, so that the noise can be converted into heat energy when passing through the sound-absorbing material. Foamed ceramics with different structures silence the noise in different intervals. Due to their different positions, the silencing effects of the noise when it is transmitted are also different. The foamed ceramic silencer adapted to the input and output ports can silence noise of different frequencies, thereby silencing noise in different frequency bands, thereby achieving noise elimination or attenuation, thereby completing the noise elimination work.

[0022] 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 technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A foamed ceramic silencer for an air compressor, comprising a silencer (1), characterized in that: The outer side of the muffler (1) is provided with an external thread, and the muffler (1) is threadedly connected to the side plate (2) through the thread. A retaining spring (4) is fixedly installed inside the muffler (1), and a square-edged muffler plate (5) is fixedly installed on one side of the retaining spring (4). A threaded head (6) is fixedly installed on one side of the muffler (1). A first cylindrical tube (3) is fixedly installed on one side of the side plate (2), and a plurality of cylindrical tube holes (7) are opened on the outer side of the first cylindrical tube (3). A sealing gasket is provided inside the side plate (2), and a shock-absorbing membrane is provided on the inner wall of the muffler (1). The diameters of the plurality of square-edged muffler plates (5) are different.

2. The foamed ceramic muffler for an air compressor according to claim 1, characterized in that: The spacing between the plurality of square-edge sound-absorbing plates (5) is the same, and the material of the square-edge sound-absorbing plates (5) is foamed ceramic.

Images