Silencer of vacuum damping machine

Abstract

The utility model discloses a vacuum damping machine silencer which comprises a connecting base, an inner cylinder, an outer cylinder and an outer cover plate, the connecting base is used for being connected with a box body of a vacuum damping machine, the connecting base is provided with a channel, and the channel is communicated with the box body; the inner cylinder is connected with the connecting base and communicates with the channel, and a plurality of first through holes are formed in the cylinder wall of the inner cylinder; the outer cylinder is connected with the connecting seat and sleeves the inner cylinder, an annular cavity is defined between the outer cylinder and the inner cylinder, a plurality of second through holes are formed in the cylinder wall of the outer cylinder, the second through holes are communicated with the annular cavity, and the annular cavity is filled with a silencing material; the outer cover plate detachably covers the top opening of the outer cylinder. The silencer of the vacuum damping machine is compact in structure, remarkable in noise reduction effect and convenient to install and maintain.

Description

Technical Field

[0001] This application relates to the technical field of tobacco leaf threshing and re-drying equipment, specifically to a silencer for a vacuum rehumidifier. Background Technology

[0002] Vacuum rehumidifiers are key equipment in tobacco processing. They rapidly rehumidify tobacco leaves through vacuum treatment, improving the re-permeability, increasing the processing resistance, and reducing the unpleasant odors. After vacuum rehumidification, the air needs to be broken up to balance the internal and external pressure difference, allowing operators to safely open the chamber door and transport the processed tobacco leaves. During this breaking up process, a large amount of gas flows into the vacuum rehumidifier. The high-speed airflow and mechanical vibration generate significant high-frequency noise, which can be harmful to the health of operators exposed to this noise environment for extended periods. Current technologies often use single-layer soundproof covers or simple sound-absorbing materials to wrap the pipes, resulting in poor noise reduction, loose structure, low reliability, and inconvenient disassembly and maintenance, thus affecting equipment operating efficiency. Utility Model Content

[0003] In view of the above-mentioned defects or deficiencies in the prior art, the present invention provides a silencer for a vacuum dehumidifier to improve noise reduction effect and ease of maintenance.

[0004] The vacuum dehumidifier silencer provided by this utility model includes: a connecting seat for connecting to the housing of the vacuum dehumidifier, the connecting seat having a channel communicating with the housing; an inner cylinder connected to the connecting seat and communicating with the channel, the inner cylinder having a plurality of first through holes on its wall; an outer cylinder connected to the connecting seat and fitted onto the inner cylinder, the outer cylinder defining an annular cavity between the inner cylinder and the outer cylinder, the outer cylinder having a plurality of second through holes on its wall communicating with the annular cavity, wherein the annular cavity is filled with sound-absorbing material; and an outer cover plate detachably covering the top opening of the outer cylinder.

[0005] In some embodiments, the outer cover plate is threadedly connected to the outer cylinder.

[0006] In some embodiments, the outer cover plate and the outer cylinder are fastened together by an overlapping snap fastener.

[0007] In some embodiments, the outer cover plate is provided with a plurality of third through holes, which communicate with the annular cavity and the inner cylinder.

[0008] In some embodiments, the vacuum dehumidifier silencer further includes an inner cover plate covering the top opening of the inner cylinder. The inner cover plate is located inside the outer cylinder and has a plurality of fourth through holes that communicate with the third through holes.

[0009] In some embodiments, at least one of the connecting seat, the inner cylinder, the outer cylinder, the outer cover plate, and the inner cover plate is made of stainless steel.

[0010] In some embodiments, the connecting seat includes a flange portion, an outer ring portion, and an annular sealing plate. The outer ring portion protrudes from the upper surface of the flange portion, and the annular sealing plate is connected to the end of the outer ring portion away from the flange portion and is disposed around the outer ring portion. The channel is disposed in the flange portion, the inner cylinder is inserted into the channel, and the outer cylinder is supported on the annular sealing plate.

[0011] In some embodiments, a sealing gasket is provided between the lower surface of the flange and the housing of the vacuum dehumidifier.

[0012] In some embodiments, the sound-absorbing material is a porous sound-absorbing material, which is glass fiber cotton or metal porous foam.

[0013] In some embodiments, both the first through hole and the second through hole are circular holes.

[0014] The vacuum rehumidifier silencer provided by this utility model has the following beneficial effects:

[0015] When the vacuum dehumidifier breaks through the air, the external gas enters the annular cavity through multiple second through holes in the outer cylinder of the vacuum dehumidifier's silencer. After being treated by the sound-absorbing material, it enters the channel of the connecting seat through multiple first through holes in the inner cylinder and flows into the interior of the vacuum dehumidifier. During this process, because the high-speed airflow is dispersed by multiple second and first through holes and is treated by the sound-absorbing material, the frequency of mechanical vibration caused by the airflow impacting the housing is greatly reduced, thus improving the noise reduction effect.

[0016] The outer cover plate detachably covers the top opening of the outer cylinder, facilitating the replacement of the sound-absorbing material. It is secured to the vacuum dehumidifier's housing via flanges and gaskets (such as sealing gaskets), making disassembly and assembly easy. Compared to previous methods using single-layer soundproof covers or simple sound-absorbing materials to wrap the pipes, this design is more compact, more reliable, and easier to install and maintain.

[0017] (3) The external airflow can not only enter the annular cavity through multiple second through holes on the outer cylinder, but also enter the inner cylinder cavity of the inner cylinder through multiple third through holes, and reach the inside of the box through the inner cylinder cavity and channels, thereby quickly balancing the air pressure inside and outside the box.

[0018] (4) Multiple fourth through holes are provided in the inner cover plate. The fourth through holes are connected to the third through holes. The airflow entering from the multiple third through holes on the outer cover plate is dispersed again through the multiple fourth through holes and enters the inner cylinder cavity of the inner cylinder more evenly, further reducing noise. Attached Figure Description

[0019] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0020] Figure 1 This is an exploded view of the structure of a vacuum dehumidifier silencer according to one embodiment of this application;

[0021] Figure 2 This is a structural cross-sectional schematic diagram of a vacuum dehumidifier silencer provided in one embodiment of this application;

[0022] Figure 3 This is a schematic diagram of the connection structure between the outer cover plate and the outer cylinder of a vacuum dehumidifier silencer according to one embodiment of this application;

[0023] Figure 4 This is a schematic diagram of the connection structure between the outer cover plate and the outer cylinder of a vacuum dehumidifier silencer according to another embodiment of this application;

[0024] Figure 5 This is a schematic diagram of the structure of a vacuum dehumidifier silencer installed on a vacuum dehumidifier according to an embodiment of this application.

[0025] icon:

[0026] Vacuum dehumidifier silencer 100; vacuum dehumidifier 200; housing 210; pneumatic butterfly valve 220; connecting seat 10; channel 10a; flange 11; outer ring 12; annular sealing plate 13; inner cylinder 20; first through hole 21; outer cylinder 30; annular cavity 30a; second through hole 31; outer cover plate 40; third through hole 41; sound-absorbing material 50; overlapping buckle 60; inner cover plate 70; fourth through hole 71; sealing gasket 80. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0028] The terminology used in the embodiments of this utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The singular forms "a," "the," and "the" as used in the embodiments of this utility model are also intended to include the plural forms unless the context clearly indicates otherwise.

[0029] It should be understood that although the terms first, second, third, etc., may be used to describe the acquisition modules in the embodiments of this utility model, these acquisition modules should not be limited to these terms. These terms are only used to distinguish the acquisition modules from each other.

[0030] Depending on the context, the word "if" as used here can be interpreted as "when," "when," "in response to determination," or "in response to monitoring." Similarly, depending on the context, the phrases "if determination" or "if monitoring (the stated condition or event)" can be interpreted as "when determination," "in response to determination," "when monitoring (the stated condition or event)," or "in response to monitoring (the stated condition or event)."

[0031] It should be noted that the directional terms such as "upper," "lower," "left," and "right" used in the description of the embodiments of this utility model are used to describe the angles shown in the accompanying drawings and should not be construed as limiting the embodiments of this utility model. In addition, in the context, it should also be understood that when it is mentioned that an element is formed "upper" or "lower" of another element, it can not only be formed directly "upper" or "lower" of the other element, but also indirectly "upper" or "lower" of the other element through an intermediate element.

[0032] like Figures 1 to 5 As shown, this utility model provides a vacuum dehumidifier silencer 100 with a compact structure, significant noise reduction effect, and easy installation and maintenance. The vacuum dehumidifier silencer 100 includes a connecting seat 10, an inner cylinder 20, an outer cylinder 30, and an outer cover plate 40.

[0033] The connector 10 is used to connect to the housing 210 of the vacuum dehumidifier 200. The connector 10 can be connected to the flange of the vacuum dehumidifier 200 for quick installation and disassembly. The connector 10 is provided with a channel 10a, which communicates with the housing 210. For example, the housing 210 may be provided with a connecting pipe communicating with its interior, and the connector 10 is connected to the connecting pipe via a flange.

[0034] The inner cylinder 20 is connected to the connecting seat 10 and communicates with the channel 10a. Multiple first through holes 21 are provided on the cylinder wall of the inner cylinder 20. The inner cylinder 20 has an inner cylinder cavity that extends through the top and bottom, and the first through holes 21 communicate with the inner cylinder cavity. The multiple first through holes 21 can be the same or different in size and shape. Figure 1 and Figure 2 The illustration shows a case where multiple first through holes 21 are of the same size and shape. The first through holes 21 can be round holes to facilitate processing and improve manufacturing efficiency. The first through holes 21 can also be other shapes, such as square holes, triangular holes, polygonal holes, etc.

[0035] The outer cylinder 30 is connected to the connecting seat 10 and is sleeved on the inner cylinder 20, defining an annular cavity 30a between the outer cylinder 30 and the inner cylinder 20. Figure 1 As shown), the outer cylinder 30 has multiple second through holes 31 on its cylinder wall. The second through holes 31 are connected to the annular cavity 30a, which is filled with sound-absorbing material 50.

[0036] The outer cylinder 30 has an outer cylinder cavity that extends through the top and bottom, and the second through hole 31 communicates with the annular cavity 30a. The multiple second through holes 31 can be the same or different in size and shape. Figure 1 and Figure 2 The illustration shows a case where multiple second through holes 31 are of the same size and shape. The second through holes 31 can be round holes to facilitate machining and improve manufacturing efficiency. The second through holes 31 can also be other shapes, such as square holes, triangular holes, polygonal holes, etc.

[0037] The inner wall of the outer cylinder 30 and the outer wall of the inner cylinder 20 together define an annular cavity 30a, which is used to fill the sound-absorbing material 50. The sound-absorbing material 50 can be a common porous sound-absorbing material, such as glass fiber cotton or metal porous foam.

[0038] The outer cover plate 40 is detachably installed over the top opening of the outer cylinder 30 to close the annular cavity 30a.

[0039] like Figure 3 As shown, the outer cover plate 40 can be threadedly connected to the outer cylinder 30 to detachably cover the top opening of the outer cylinder 30. An internal thread can be provided at the top opening of the outer cylinder 30, and an external thread that mates with the internal thread can be provided on the outer peripheral wall of the outer cover plate 40.

[0040] like Figure 4 As shown, the outer cover plate 40 can be snapped onto the outer cylinder 30 via a snap fastener 60 to detachably cover the top opening of the outer cylinder 30. The outer cylinder 30 and the outer cover plate 40 can be connected by a hinge (such as a hinge, flap, etc.). A hook is provided on the side of the outer cover plate 40 opposite to the hinge, and a snap fastener is provided on the outer wall of the outer cylinder 30. The snap fastener and the hook engage to detachably cover the top opening of the outer cylinder 30.

[0041] The silencer 100 of the vacuum rehumidifier is installed on the housing 210 of the vacuum rehumidifier via the connecting seat 10. After the vacuum rehumidification operation is completed, the air needs to be purged to balance the internal and external pressure difference. During the purging, the pneumatic butterfly valve 220 is opened, and the external gas enters the annular cavity 30a through the multiple second through holes 31 of the outer cylinder 30 of the vacuum rehumidifier 100. After being treated by the sound-absorbing material 50, it enters the channel 10a of the connecting seat 10 through the multiple first through holes 21 of the inner cylinder 20 and flows into the interior of the vacuum rehumidifier. During this process, the high-speed airflow is dispersed by the multiple second through holes 21 and the multiple first through holes 21, and is treated by the sound-absorbing material 50, which greatly reduces the mechanical vibration frequency caused by the airflow impacting the housing, thus improving the noise reduction effect. That is, the generated sound waves are effectively absorbed, reflected and scattered, so that they no longer travel along the original straight propagation path, but are dispersed and propagated in various directions, superimposed or interfered with each other, and finally the energy of the sound waves gradually attenuates during the dispersion process, thereby effectively reducing the noise intensity. The outer cover plate 40 is detachably installed over the top opening of the outer cylinder 30, facilitating the replacement of the sound-absorbing material 50 and making maintenance more convenient. Compared with the previous method of using a single-layer soundproof cover or simple sound-absorbing material to wrap the pipe, the structure is more compact, has better noise reduction effect, higher reliability, and is easier to install and maintain.

[0042] In some embodiments, the outer cover plate 40 is provided with a plurality of third through holes 41, which communicate with the annular cavity 30a and the inner cylinder 20.

[0043] External airflow can enter the annular cavity 30a not only through multiple second through holes 31 on the outer cylinder 30, but also through multiple third through holes 41 on the outer cover plate 40, thereby dispersing more airflow and further reducing noise; and external airflow can also enter the inner cylinder cavity of the inner cylinder 20 through multiple third through holes 41, thereby quickly reaching the inside of the box 210 through the inner cylinder cavity and the channel 10a, and quickly balancing the air pressure inside and outside the box 210.

[0044] In some embodiments, the vacuum dehumidifier silencer 100 further includes an inner cover plate 70, which covers the top opening of the inner cylinder 20. The inner cover plate 70 is located inside the outer cylinder 30. The inner cover plate 70 is provided with a plurality of fourth through holes 71, which communicate with the third through holes 41.

[0045] The inner cover plate 70 is provided with multiple fourth through holes 71, which are connected to the third through holes 41. The airflow entering from the multiple third through holes 41 on the outer cover plate 40 is dispersed again by the multiple fourth through holes 71 and enters the inner cylinder cavity of the inner cylinder 20 more evenly, further reducing noise.

[0046] In some embodiments, at least one of the connecting seat 10, inner cylinder 20, outer cylinder 30, outer cover plate 40 and inner cover plate 70 is made of stainless steel, for example, SUS304 stainless steel.

[0047] This improves the service life and reliability of the vacuum dehumidifier silencer 100.

[0048] In some embodiments, the connecting seat 10 includes a flange portion 11, an outer ring portion 12, and an annular sealing plate 13. The outer ring portion 12 protrudes from the upper surface of the flange portion 11, and the annular sealing plate 13 is connected to the end of the outer ring portion 12 away from the flange portion 11 and is disposed around the outer ring portion 12. A channel 10a is disposed in the flange portion 11, an inner cylinder 30 is inserted in the channel 10a, and the outer cylinder 30 is supported on the annular sealing plate 12.

[0049] The annular sealing plate 12, outer cylinder 30, inner cylinder 20 and outer cover plate 40 form a closed annular cavity 30a.

[0050] In some embodiments, a sealing gasket 80 is provided between the lower surface of the flange 11 and the housing 210 of the vacuum dehumidifier. This prevents air leakage and improves noise reduction reliability.

[0051] It should be noted that the communication system provided in this embodiment corresponds to the technical solutions that can be used to execute the various method embodiments. Its implementation principle and technical effects are similar to those of the methods, and will not be repeated here.

[0052] The above description is merely a preferred embodiment of this utility model. Those skilled in the art should understand that the scope of disclosure involved in this utility model is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalent features without departing from the above-described concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in this utility model.

Claims

1. A silencer for a vacuum dehumidifier, characterized in that, include: A connecting base is provided for connecting to the housing of a vacuum dehumidifier. The connecting base is provided with a channel that communicates with the housing. The inner cylinder is connected to the connecting seat and communicates with the channel, and the inner cylinder wall is provided with a plurality of first through holes; An outer cylinder is connected to the connecting seat and sleeved on the inner cylinder. An annular cavity is defined between the outer cylinder and the inner cylinder. A plurality of second through holes are provided on the cylinder wall of the outer cylinder. The second through holes communicate with the annular cavity. The annular cavity is filled with sound-absorbing material. An outer cover plate is detachably installed over the top opening of the outer cylinder.

2. The silencer for a vacuum dehumidifier according to claim 1, characterized in that, The outer cover plate is threadedly connected to the outer cylinder.

3. The silencer for a vacuum dehumidifier according to claim 1, characterized in that, The outer cover plate and the outer cylinder are connected by an overlapping fastener.

4. The silencer for a vacuum dehumidifier according to claim 1, characterized in that, The outer cover plate is provided with multiple third through holes, which are connected to the annular cavity and the inner cylinder.

5. The silencer for a vacuum dehumidifier according to claim 4, characterized in that, The vacuum dehumidifier silencer also includes an inner cover plate, which covers the top opening of the inner cylinder. The inner cover plate is located inside the outer cylinder and has multiple fourth through holes, which communicate with the third through holes.

6. The silencer for a vacuum dehumidifier according to claim 5, characterized in that, At least one of the connecting seat, the inner cylinder, the outer cylinder, the outer cover plate, and the inner cover plate is made of stainless steel.

7. The silencer for a vacuum dehumidifier according to claim 1, characterized in that, The connecting seat includes a flange portion, an outer ring portion, and an annular sealing plate. The outer ring portion protrudes from the upper surface of the flange portion, and the annular sealing plate is connected to the end of the outer ring portion away from the flange portion and is arranged around the outer ring portion. The channel is located at the flange, the inner cylinder is inserted into the channel, and the outer cylinder is supported on the annular sealing plate.

8. The silencer for a vacuum dehumidifier according to claim 7, characterized in that, A sealing gasket is provided between the lower surface of the flange and the housing of the vacuum dehumidifier.

9. The silencer for a vacuum dehumidifier according to claim 1, characterized in that, The sound-absorbing material is glass fiber cotton or metal porous foam.

10. The silencer for a vacuum dehumidifier according to claim 1, characterized in that, Both the first through hole and the second through hole are round holes.

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