A one-way valve muffler based on a flow dividing valve plate structure

Abstract

This utility model discloses a one-way valve silencer based on a flow-dividing valve plate structure, including an end cap, a housing, sound-absorbing cotton, and a connecting pipe. One end of the connecting pipe is movably inserted into the end cap, and the end cap has multiple air outlets at the insertion point of the connecting pipe. A valve plate is disposed between the end cap and the connecting pipe. The valve plate consists of an outer ring, an inner ring, and a central plate. One end of the inner ring is connected to the left side of the outer ring, and the other end of the inner ring surrounds the central plate and is connected to its left side. The air inlet of the end cap, the sound-absorbing cotton, and the air inlet hole of the connecting pipe form an air inlet channel, and the air outlet of the connecting pipe, the valve plate, and the end cap form an exhaust channel. Gas enters through the air inlet channel and flows out through the exhaust channel. The air inlet and exhaust are diverted to achieve independent flow rate control, avoiding turbulent noise. Furthermore, the exhaust gas can be directly discharged into the air without passing through the silencer structure, thereby improving exhaust efficiency.

Description

Technical Field

[0001] This utility model belongs to the technical field of one-way valve silencers, and particularly relates to a one-way valve silencer based on a flow divider valve plate structure. Background Technology

[0002] A muffler (also known as a silencer or vibration damping muffler) is a device installed at the exhaust system or noise source outlet. Its core function is to reduce or control the noise energy in the airflow (or sound waves) through acoustic principles, while minimizing the impact on system performance (such as exhaust back pressure and power loss).

[0003] Currently, the silencers used in air compressors share a single chamber and air inlet for both intake and exhaust. This approach has the following technical disadvantages:

[0004] 1. High NVH: Friction between airflow and the internal structure of the muffler generates turbulent noise, resulting in high NVH during intake and exhaust.

[0005] 2. Low exhaust efficiency: During exhaust, the gas passes through a muffler structure, resulting in high back pressure and poor gas discharge, thus reducing exhaust efficiency. Utility Model Content

[0006] This invention addresses the problems in existing technologies where airflow friction with the internal structure of the muffler generates turbulent noise, and the exhaust process involves further passage through the muffler, resulting in high back pressure and poor gas discharge. The following technical solution is proposed:

[0007] A one-way valve silencer based on a diverter valve plate structure includes: an end cap, a housing, sound-absorbing cotton, and a connecting pipe. One end of the connecting pipe is movably inserted into the end cap. The end cap has multiple air outlets at the insertion point of the connecting pipe. The other end of the connecting pipe extends through the housing to the outside, and the middle part of the connecting pipe is fixedly connected to the housing.

[0008] A valve plate is provided between the end cap and the connecting pipe. The valve plate consists of an outer ring, an inner ring, and a central plate. One end of the inner ring is connected to the left side of the outer ring, and the other end of the inner ring surrounds the central plate and is connected to its left side. The connecting pipe has a groove at the position of the inner ring. The air outlet of the connecting pipe, the valve plate, and the end cap forms an exhaust channel.

[0009] As a preferred embodiment of the above technical solution, the cross-section at the connection between the inner ring and the outer ring is arc-shaped, and the distance between the outer side of the inner ring and the inner side of the outer ring is the same.

[0010] As a preferred embodiment of the above technical solution, the cross-section at the connection between the inner ring and the center piece is arc-shaped, and the inner side of the inner ring is equidistant from the outer side of the center piece.

[0011] As a preferred embodiment of the above technical solution, the connecting pipe has an air inlet hole on the inner surface of the housing, and the end cap has multiple air inlets circumferentially arranged on the outer side of the connecting pipe. The air inlets of the end cap, the sound-absorbing cotton, and the air inlets of the connecting pipe form an air intake channel.

[0012] As a preferred embodiment of the above technical solution, the outer circumferential side of the end cap is provided with multiple snap-fit ​​pieces, and the surface of the housing is provided with corresponding snap-fit ​​blocks.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. The one-way valve silencer based on the diversion valve plate structure described in this utility model has an air intake channel formed by the air inlet of the end cap, the sound-absorbing cotton, and the air inlet hole of the connecting pipe, and an exhaust channel formed by the air outlet of the connecting pipe, the valve plate, and the end cap. Gas enters through the air intake channel and flows out through the exhaust channel. The air intake and exhaust are diverted to achieve independent flow rate control, avoid turbulent noise, and the exhaust gas can be directly discharged into the air without passing through the silencer structure, reducing the gas back pressure and thus improving the exhaust efficiency.

[0015] 2. The one-way valve muffler based on the diversion valve plate structure described in this utility model has a valve plate in the exhaust channel composed of an outer ring, an inner ring, and a central plate. This allows the valve plate to form a "progressive elastic deformation" when opening and closing, namely, three different stages: the outer ring is fixed, the inner ring is buffered, and the central plate responds. This not only ensures the sensitivity to pressure changes and the sealing effect during air intake, but also reduces the impact wear of the central plate through the buffering effect of the inner ring. This avoids the deformation or breakage caused by local stress concentration of traditional single valve plates, thus extending the service life of the valve plate. Attached Figure Description

[0016] Figure 1 The diagram shown is a schematic representation of the overall structure of the embodiment;

[0017] Figure 2 The view shown is a front sectional view of an embodiment;

[0018] Figure 3 The diagram shown is a schematic representation of the valve plate installation in the embodiment.

[0019] In the diagram: 10, end cap; 11, air outlet; 12, air inlet; 13, snap-fit ​​piece; 20, housing; 21, snap-fit ​​block; 30, connecting pipe; 31, air inlet hole; 32, groove; 40, valve plate; 41, outer ring; 42, inner ring; 43, center plate; 50, sound-absorbing cotton. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings.

[0021] Figures 1-3 A one-way valve silencer based on a diverter valve plate structure includes: an end cap 10, a housing 20, sound-absorbing cotton 50, and a connecting pipe 30. One end of the connecting pipe 30 is movably inserted into the end cap 10. The end cap 10 has multiple air outlets 11 at the insertion point of the connecting pipe 30. The other end of the connecting pipe 30 extends through the housing 20 to the outside, and the middle part of the connecting pipe 30 is fixedly connected to the housing 20.

[0022] A valve plate 40 is provided between the end cap 10 and the connecting pipe 30. The valve plate 40 is composed of an outer ring 41, an inner ring 42 and a central plate 43. One end of the inner ring 42 is connected to the left side of the outer ring 41, and the other end of the inner ring 42 surrounds the central plate 43 and is connected to its left side. The connecting pipe 30 is provided with a groove 32 at the position of the inner ring 42. The connecting pipe 30, the valve plate 40 and the air outlet 11 of the end cap 10 form an exhaust channel.

[0023] The cross-section at the connection between the inner ring 42 and the outer ring 41 is arc-shaped, and the outer side of the inner ring 42 is equidistant from the inner side of the outer ring 41.

[0024] The cross-section at the connection between the inner ring 42 and the center piece 43 is arc-shaped, and the inner side of the inner ring 42 is equidistant from the outer side of the center piece 43.

[0025] The valve plate 40 of the exhaust passage consists of an outer ring 41, an inner ring 42, and a central plate 43, which enables the valve plate 40 to form a "progressive elastic deformation" when opening and closing. That is, the outer ring 41 is fixed, the inner ring 42 is buffered, and the central plate 43 responds in three different stages. This not only ensures the sensitivity to pressure changes and the sealing effect during air intake, but also reduces the impact wear of the central plate 43 through the buffering effect of the inner ring 42. This avoids the deformation or breakage caused by local stress concentration in the traditional single valve plate 40, and extends the service life of the valve plate 40.

[0026] Figures 1-3 In the case, the connecting pipe 30 has an air inlet 31 on the inner surface of the housing 20, and the end cap 10 has multiple air inlets 12 arranged circumferentially on the outer side of the connecting pipe 30. The air inlets 12 of the end cap 10, the sound-absorbing cotton 50 and the air inlets 31 of the connecting pipe 30 form an air intake channel.

[0027] The air inlet 12 of the end cap 10, the sound-absorbing cotton 50, and the air inlet hole 31 of the connecting pipe 30 form an air intake channel, while the connecting pipe 30, the valve plate 40, and the air outlet 11 of the end cap 10 form an exhaust channel. Gas enters through the air intake channel and flows out through the exhaust channel. The air intake and exhaust are designed to be separated to achieve independent control of the flow rate, avoid turbulent noise, and the exhaust gas can be directly discharged into the air without passing through the silencer structure, reducing the gas back pressure and thus improving the exhaust efficiency.

[0028] Figures 1-3 In the middle, the outer circumferential side of the end cap 10 is provided with a plurality of snap-fit ​​pieces 13, and the surface of the housing 20 is provided with corresponding snap-fit ​​blocks 21.

[0029] Working principle: During air intake, the gas enters from the circumferential air intake 12 of the end cover 10. After being silenced by the sound-absorbing cotton 50, it enters the connecting pipe 30 through the air intake hole 31 on the connecting pipe 30 and then flows to the compressor and other equipment. At this time, the valve plate 40 is closed under the action of gas pressure, ensuring that the airflow only passes through the air intake channel and the intake airflow is silenced by the sound-absorbing cotton 50.

[0030] During exhaust, gas flows from the connecting pipe 30 to the end cover 10. Under the action of gas pressure, the central plate 43 and inner ring 42 of the valve plate 40 are pushed open, and the gas is discharged through the outlet 11 on the end cover 10.

[0031] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A check valve silencer based on a split valve disc structure, characterized in that, include: The assembly includes an end cap (10), a housing (20), sound-absorbing cotton (50), and a connecting pipe (30). One end of the connecting pipe (30) is movably inserted into the end cap (10). The end cap (10) has multiple air outlets (11) at the insertion point of the connecting pipe (30). The other end of the connecting pipe (30) extends through the housing (20) to the outside, and the middle part of the connecting pipe (30) is fixedly connected to the housing (20). The connecting pipe (30) has an air inlet (31) on the inner surface of the housing (20), and the end cap (10) has multiple air inlets (12) arranged circumferentially on the outer side of the connecting pipe (30). The air inlets (12) of the end cap (10), the sound-absorbing cotton (50) and the air inlets (31) of the connecting pipe (30) form an air intake channel. A valve plate (40) is provided between the end cap (10) and the connecting pipe (30). The valve plate (40) is composed of an outer ring (41), an inner ring (42) and a central piece (43). One end of the inner ring (42) is connected to the left side of the outer ring (41), and the other end of the inner ring (42) surrounds the central piece (43) and is connected to its left side. The connecting pipe (30) is provided with a groove (32) at the position of the inner ring (42). The air outlet (11) of the connecting pipe (30), the valve plate (40) and the end cap (10) form an exhaust channel.

2. A check valve muffler based on a split valve structure according to claim 1, characterized in that, The cross-section at the connection between the inner ring (42) and the outer ring (41) is arc-shaped, and the outer side of the inner ring (42) is the same distance from the inner side of the outer ring (41).

3. A check valve muffler based on a split valve structure according to claim 1, characterized in that, The cross-section at the connection between the inner ring (42) and the center piece (43) is arc-shaped, and the inner side of the inner ring (42) is the same distance from the outer side of the center piece (43).

4. A check valve muffler based on a split valve structure according to claim 1, characterized in that, The end cap (10) is provided with a plurality of snap-fit ​​pieces (13) on its outer circumferential side, and the housing (20) is provided with corresponding snap-fit ​​blocks (21) on its surface.

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