CN215110275U - Vibration reduction assembly and range hood - Google Patents

Abstract

The application discloses a vibration reduction assembly and a range hood, wherein the vibration reduction assembly is used for a range hood frame and comprises a check valve and a vibration reduction pad, and the check valve is communicated with a smoke exhaust port of the range hood frame; the damping pad is arranged between the machine frame of the range hood and the check valve; a first fixing structure is formed on the first side, facing the machine frame, of the vibration damping pad and is used for fixedly connecting the machine frame; the damping pad is formed with the second fixed knot structure towards the second side of check valve for fixed connection check valve. This application damping subassembly has reduced the noise that forms because of cigarette machine frame structure vibration.

Description

Vibration reduction assembly and range hood

Technical Field

The application relates to the field of household appliances, in particular to a vibration reduction assembly and a range hood.

Background

The smoke machine is used as a household kitchen appliance and has the main function of completely sucking oil smoke and the like generated during cooking. The check valve on the cigarette machine mainly comprises a valve body and a movable valve. A vibration damping pad is usually placed between the valve body and the frame of the cigarette machine, and the valve body, the frame and the vibration damping pad are connected through screws. Because the valve body is connected with the cigarette machine frame through the screw, the screw is directly contacted with the valve body, the vibration of the cigarette machine frame is transmitted to the valve body through the screw, and the vibration of the valve body is overlarge; the pneumatic noise generated by the vibration radiation sound of the valve body and the gas discharge is also diffused outwards to generate larger noise.

SUMMERY OF THE UTILITY MODEL

The application provides a vibration reduction assembly and a range hood, which aim to solve the problem that the vibration of a range hood frame is transmitted to a valve body through a screw to cause overlarge vibration of the valve body due to the fact that the existing valve body, a vibration reduction pad and the range hood frame are directly connected through the screw; and the pneumatic noise generated by the vibration radiation sound of the valve body and the gas discharge is also diffused outwards, thereby generating larger noise.

In order to solve the technical problem, the application provides a damping subassembly, damping subassembly is used for the cigarette machine frame, includes: the check valve is communicated with a smoke outlet of the machine frame of the range hood; the damping pad is arranged between the machine frame of the range hood and the check valve; a first fixing structure is formed on the first side, facing the machine frame, of the vibration damping pad and is used for fixedly connecting the machine frame; the damping pad is formed with the second fixed knot structure towards the second side of check valve for fixed connection check valve.

The second fixing structure comprises a damping column which penetrates through the check valve to connect the damping pad and the check valve; the first fixing structure comprises a fixing hole used for enabling the fixing column to penetrate through the cigarette machine frame to be connected to the fixing hole so as to connect the vibration damping pad and the cigarette machine frame.

The second fixing structure further comprises a vibration reduction cover, and the detachable cover is arranged on the vibration reduction column penetrating through the check valve.

Wherein the fixing hole is formed on the damping post.

The damping pad is square, and the damping columns are formed at four corner positions of the damping pad.

Wherein, the check valve is formed with the passageway of making an uproar that falls, and the internal surface of the passageway of making an uproar that falls is formed with annular groove.

Wherein, the width of the annular groove is 0.03-0.2 m, and the depth is 0.165-0.21 m.

Wherein, the check valve includes: the base is connected with the vibration damping pad; the valve body is connected to the base; the connecting body is connected to the valve body, and the valve body is positioned between the base and the connecting body; the connecting body comprises an upstream connecting part, an expansion part and a downstream connecting part, wherein the upstream connecting part is connected to the valve body, and the expansion part is arranged between the upstream connecting part and the downstream connecting part; the expansion part forms an annular groove.

Wherein, in the direction from the upstream connecting part to the downstream connecting part, the noise reduction passage formed by the valve body is gradually enlarged.

In order to solve the technical problem, the application provides a cigarette machine, which comprises a cigarette machine frame and the vibration reduction assembly.

A first fixing structure is formed on the first side, facing the machine frame, of the vibration damping pad in the vibration damping assembly and is used for fixedly connecting the machine frame of the cigarette machine; the damping pad is formed with the second fixed knot structure towards the second side of check valve for fixed connection check valve. The damping pad is connected with the cigarette machine frame and the check valve that correspond through first fixed knot structure and second fixed knot structure respectively promptly to make the structural vibration of cigarette machine frame can't transmit the second fixed knot through first fixed knot structure on, thereby blockked structural vibration propagation between cigarette machine frame and the check valve, realized between check valve and the cigarette machine frame exhaust port structural vibration's complete isolation, thereby reduced the noise that forms because of cigarette machine frame structural vibration.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:

FIG. 1 is a schematic structural view of a vibration reduction assembly of the present application for use with a frame of a range hood;

FIG. 2 is a schematic diagram of the structure of a damping pad in the damping assembly of FIG. 1;

FIG. 3 is a schematic view of the check valve of the damping assembly of FIG. 1;

fig. 4 is a sectional view of the check valve shown in fig. 3.

Reference numerals: 1. a vibration reduction assembly; 11. a check valve; 111. a noise reduction channel; 112. an annular groove; 113. a base; 1131. a non-return hole; 1132. a first recess; 114. a valve body; 1141. reinforcing ribs; 115. a linker; 1151. an upstream connection section; 1152. an expansion part; 1153. a downstream connection; 12. a vibration damping pad; 121. a first fixed structure; 1211. a fixing hole; 122. a second fixed structure; 1221. a damping post; 1222. a vibration damping cover; 1223. a vibration damping strip; 123. a vibration damping through hole; 124. a first boss portion; 100. a range hood; 101. the cigarette machine frame.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The following describes the damping assembly and the range hood in detail in conjunction with the embodiment.

Referring to fig. 1 and 2, fig. 1 is a schematic view of a vibration damper assembly of the present application for use in a frame of a cigarette making machine; fig. 2 is a schematic view of the structure of a damping pad in the damping module of fig. 1.

The vibration reduction assembly 1 in this embodiment is used in a cigarette machine frame 101 to isolate structural vibrations formed by the cigarette machine frame 101, thereby reducing noise caused by structural vibrations of the cigarette machine frame 101. The vibration damping assembly 1 comprises a check valve 11 and a vibration damping pad 12, wherein the check valve 11 is communicated with an exhaust port (not shown in the figure) of the machine frame 101 of the range hood to prevent the exhausted oil smoke containing peculiar smell, impurities and the like from flowing back into a kitchen through the exhaust port, so that the kitchen environment is severe. Wherein the damping pad 12 sets up between cigarette machine frame 101 and check valve 11, and the damping pad 12 is formed with first fixed knot structure 121 towards the first side of cigarette machine frame 101 for damping pad 12 first side is through first fixed knot structure 121 and cigarette machine frame 101 fixed connection. Meanwhile, the second side of the damping pad 12 facing the check valve 11 is formed with a second fixing structure 122, so that the second side of the damping pad 12 is fixedly connected with the check valve 11 through the second fixing structure 122. Wherein the damping pad 12 is clamped between the cigarette machine frame 101 and the check valve 11.

The damping pad 12 is connected with the corresponding cigarette machine frame 101 and the check valve 11 through the first fixing structure 121 and the second fixing structure 122 respectively, therefore, the first fixing structure 121 and the second fixing structure 122 are possibly different, and meanwhile, the installation positions of the first fixing structure 121 and the second fixing structure 122 can also be different, so that the structural vibration of the cigarette machine frame 101 cannot be transmitted to the second fixing structure 122 through the first fixing structure 121, thereby the structural vibration propagation between the cigarette machine frame 101 and the check valve 11 is blocked, the complete isolation of the structural vibration between the check valve 11 and the smoke exhaust port of the cigarette machine frame 101 is realized, and the noise formed due to the structural vibration of the cigarette machine frame 101 is reduced.

Specifically, as shown in fig. 2, the second fixing structure 122 includes a damping post 1221, wherein the damping post 1221 is inserted through the check valve 11, thereby connecting the damping pad 12 and the check valve 11; and the structural vibration of the cigarette machine frame 101 can be blocked, and the structural vibration is prevented from being transmitted to the check valve 11, so that the noise caused by the structural vibration of the cigarette machine frame 101 is reduced. The damping post 1221 has damping properties, and may be made of rubber material, for example. The number of the damping columns 1221 is one, two or more, and the number can be limited according to actual situations. The second fixing structure 122 may further include other structures to further facilitate the connection of the damping pad 12 and the check valve 11. In practice, the damping posts 1221 are integrally formed with the damping pad 12 for ease of handling and subsequent installation.

In other embodiments, the check valve 11 is provided with check holes 1131 corresponding to the number of the damping columns 1221, the check holes 1131 not only facilitate the damping columns 1221 to pass through the check holes 1131 to connect the damping pad 12 and the check valve 11, but also enable the check holes 1131 to play a certain role in pre-positioning.

Specifically, as shown in figure 2, the first mounting structure 121 includes mounting holes 1211 and mounting posts extend through the back of the cigarette machine chassis 101 and attach within the mounting holes 1211 to attach the vibration damping pad 12 to the cigarette machine chassis 101. The number of the fixing holes 1211 is one, two or more, and the number thereof may be limited according to the actual situation. The first attachment structure 121 may also include other structures to further facilitate attachment of the damping pad 12 to the cigarette machine chassis 101. Wherein the fixing column can be a screw, a bolt and the like. When the fixing post is a screw, the screw is screwed into the fixing hole 1211, so that the fixing post is convenient to mount and dismount.

In other embodiments, the cigarette maker frame 101 is provided with frame holes (not shown) corresponding to the number of the fixing holes 1211, so that the fixing posts penetrate through the cigarette maker frame 101 and are connected to the damping pad 12 through the fixing holes 1211.

Further, as shown in fig. 2, the second fixing structure 122 further includes a damping cap 1222, such as the damping cap 1222 and the damping post 1221 are in a separated state before the damping post 1221 passes through the check valve 11; the damping cap 1222 may cover the damping post 1221 after the damping post 1221 passes through the check valve 11. The damping cover 1222 not only stably embeds the check valve 11 on the damping pad 12, improving the stability of connection between the two, avoiding the check valve 11 from falling off due to structural vibration, but also blocks the structural vibration formed by the cigarette machine frame 101 from being transmitted to the check valve 11 through the damping post 1221. The damping cover 1222 has damping performance, and may be made of rubber material. Since the damping cap 1222 needs to be covered on the damping post 1221, the size of the non-return hole 1131 may be slightly larger than the diameter of the damping post 1221 to facilitate the installation of the damping cap 1222.

To facilitate quick access to the damping cap 1222 and quick removable mounting of the damping cap 1222 to the damping post 1221, the damping cap 1222 is disposed on the damping pad 12. Preferably, the damping cover 1222 is integrally formed with the damping pad 12. However, in practice, when the damping cap 1222 is not covered on the damping post 1221, the damping cap 1222 is taken to cover the damping post 1221, so that a damping strip 1223 is disposed between the damping cap 1222 and the damping pad 12, and the damping strip 1223 is connected between the damping cap 1222 and the damping pad 12. The number of the damping caps 1222 and the damping bars 1223 may correspond to the number of the damping posts 1221. Preferably, the damping cap 1222, the damping strip 1223 and the damping post 1221 are integrally formed with the damping pad 12.

Due to the arrangement of the first fixing structure 121 and the second fixing structure 122 on the vibration damping pad 12, the structural vibration of the cigarette machine frame 101 can be prevented from being transmitted to the check valve 11. However, the provision of the first and second fastening structures 121,122 for the damping pad 12 increases the complexity of the mold for the damping pad 12 and significantly increases the installation time and reduces the installation efficiency during installation of the cigarette maker 100. Therefore, in order to facilitate the simplification of the structure of the damping pad 12 and to improve the assembly efficiency of the cigarette maker 100, the fixing holes 1211 are formed on the damping columns 1221 in this embodiment, and the fixing posts are inserted through the cigarette maker frame 101, the fixing holes 1211 and connected to the damping columns 1221. That is, the first fixing structure 121 and the second fixing structure 122 are located at the same position and are integrally arranged to pass through the damping column 1221 and the fixing hole 1211 located in the damping column 1221 and simultaneously connect the cigarette machine frame 101 and the check valve 11 to improve the assembly efficiency of the cigarette machine 100; while also simplifying the mounting structure of the vibration damping pad 12.

Further, as shown in fig. 2, because the fixing column is mounted on the vibration damping column 1221, the direct contact between the fixing column and the check valve 11 is avoided, and the complete vibration isolation between the check valve 11 and the cigarette machine frame 101 is realized, so that the structural vibration of the cigarette machine frame 101 is reduced and transmitted to the check valve 11, and the noise is reduced. In addition, the damping post 1221 is covered with a damping cover 1222 to further block the fixing post from transmitting the structural vibration to the check valve 11.

Specifically, since most of the smoke exhaust ports of the existing cigarette machine frame 101 are arranged in a square shape, the vibration damping pad 12 in this embodiment is arranged in a square shape to match the shape of the existing smoke exhaust ports. Wherein the center of the vibration damping pad 12 is a vibration damping through hole 123 to communicate with the smoke exhaust. In addition, the damping columns 1221 are formed at four angular positions of the damping pad 12 to be connected with the cigarette machine frame 101 and the check valve 11 in all directions, so that the damping pad 12 is stably connected with the cigarette machine frame 101 and the check valve 11, and the complexity of the die of the damping pad 12 is reduced. The damping column 1221 is disposed in a cylindrical shape, and the fixing hole 1211 disposed in the damping column 1221 is also disposed in a cylindrical shape, and the frame hole is also disposed in a circular shape, so that the screw can smoothly pass through the frame hole and be connected to the fixing hole 1211.

In addition, damping strips 1223 are also provided at four corner positions of the damping pad 12, and the ends of the damping strips 1223 are connected to the damping cap 1222 to match the damping posts 1221 at adjacent positions. Of course, the damping pad 12 is not limited to a square shape, but may be other shapes, such as a circle, an oval, etc., so that the damping pad 12 can match the shape of the smoke outlet.

Referring to fig. 3 and 4, fig. 3 is a schematic structural view of a check valve of the damping assembly shown in fig. 1; fig. 4 is a sectional view of the check valve shown in fig. 3.

In practice, when the check valve 11 and the damping pad 12 are connected only by the damping post 1221, there may be a gap at the connection between the check valve 11 and the damping pad 12, so that the oil smoke is discharged into the kitchen from the gap therebetween to affect the environment of the kitchen. Therefore, a first sealing member is provided between the bottom of the check valve 11 and the damping pad 12 to seal the gap, thereby reducing the discharge of soot into the kitchen from the gap therebetween.

Further, the first sealing member may be a first recess 1132 and a first protrusion 124, wherein the first recess 1132 may be recessed in one of the damping pad 12 and the bottom of the check valve 11, and the first protrusion 124 may be protruded in the other of the damping pad 12 and the bottom of the check valve 11. As shown in fig. 4, the first recess 1132 is formed at the bottom of the check valve 11, and the first protrusion 124 is formed on a side of the damping pad 12 close to the check valve 11. Wherein the first recessed portion 1132 abuts against the inner side surface of the first raised portion 124, so as to play a certain sealing role and reduce the oil smoke discharged from between the vibration damping pad 12 and the check valve 11.

Similarly, there may be a gap at the connection between the vibration pad 12 and the range hood chassis 101 to allow smoke to be expelled from the gap between the vibration pad 12 and the range hood chassis 101 into the kitchen, affecting the environment of the kitchen. Accordingly, a second seal is also provided between the vibration damping pad 12 and the cigarette maker chassis 101 to seal the gap and thereby reduce the escape of smoke into the kitchen from the gap therebetween. Wherein the second seal may be of the same construction as the first seal.

Further, the second sealing member may be a second recess that may be recessed into one of the vibration reduction pad 12 and the cigarette maker chassis 101 and a second protrusion that may be raised into the other of the vibration reduction pad 12 and the cigarette maker chassis 101, wherein the second recess and the second protrusion are cooperatively engaged with each other to provide a seal that reduces the amount of smoke that is expelled from between the vibration reduction pad 12 and the cigarette maker chassis 101.

As shown in FIG. 3, since the valve body 114 of the prior art check valve 11 is generally cylindrical and the surface thereof is generally inclined, the air outlet of the valve body 114 is connected to the smoke tube. With reference to fig. 1, the cigarette making machine 100 vibrates during operation, and especially after a period of use, the wind resistance becomes large after the impeller is stained with smoke scale, the vibration of the cigarette making machine frame 101 is aggravated, and the radiation noise of the smoke outlet of the cigarette making machine frame 101 and the rotation noise of the fan are relatively increased, so that the airflow noise in the check valve 11 is also increased more and more.

Therefore, in the present example, the noise reduction passage 111 is formed in the check valve 11, wherein the inner surface of the noise reduction passage 111 is formed with the annular groove 112, and the annular protrusion is formed on the outer surface of the check valve 11. The annular protrusion is protruded from the outer surface of the check valve 11 such that the diameter of the annular protrusion is larger than the diameter of the other portions of the check valve 11. When noise enters the valve body 114 and passes through the annular groove 112, the noise is diffused, decelerated, reflected by wall collision, interfered with each other, and the like, so that energy is consumed, and then the noise is reduced, thereby achieving the purpose of reducing the noise. The impedance of the noise acoustic wave propagation path can be changed by the annular groove 112. Therefore, the annular groove 112 and the corresponding annular protrusion can reduce noise. The section of the annular groove 112 may be circular arc or rectangular. The cross-sectional shape of the annular groove 112 in this embodiment is rectangular.

As shown in fig. 3 and 4, since the noise generated by the fan or the like in the prior art partial range hood 100 is mainly low frequency or the like, the noise reduction frequency of the noise can be matched by changing the radius and width of the annular groove 112. If the radius and/or width dimension of the annular groove 112 becomes larger, the noise reduction of low frequency noise by the check valve 11 can be improved. That is, the noise reduction frequency of the check valve 11 may be changed by changing the width and depth of the annular groove 112 at the same time, or only changing the width of the annular groove 112, or only changing the depth of the annular groove 112, etc., and is not limited herein.

Specifically, the width of the annular groove 112 is greater than or equal to 0.03m and less than or equal to 0.2m, which can improve the noise reduction of low-frequency noise by the check valve 11. Wherein, the width of the annular groove 112 can be 0.03m, 0.1m, 0.15m, 0.2m, etc. The depth of the annular groove 112 is greater than or equal to 0.165m and less than or equal to 0.21m, which improves the noise reduction of low frequency noise by the check valve 11. Wherein the depth of the annular groove 112 may be 0.165m, 0.17m, 0.19, 0.21m, etc. The width of the annular groove 112 is indicated by the arrow X in fig. 4; the depth of the annular groove 112 is indicated by arrow Y in fig. 4.

Further, as shown in fig. 3 and 4, the check valve 11 includes a base 113, a valve body 114, and a connecting body 115, the valve body 114 is located between the base 113 and the connecting body 115, the base 113 is connected with the damping pad 12, that is, the check valve 11 is connected with the damping pad 12 through the base 113. Wherein the valve body 114 is connected to the base 113 and the connecting body 115 is connected to the valve body 114.

Wherein, the connection body 115 comprises an upstream connection portion 1151, an expansion portion 1152 and a downstream connection portion 1153, the expansion portion 1152 is located between the upstream connection portion 1151 and the downstream connection portion 1153, wherein the upstream connection portion 1151 is connected with the valve body 114, and the downstream connection portion 1153 is connected with an external smoke exhaust pipe. The bulge 1152 forms the annular groove 112, the bulge 1152 is provided to be convex with respect to the upstream connecting portion 1151 and the downstream connecting portion 1153, and the bulge 1152 has a relatively large diameter. That is, when the gas such as soot discharged from the range hood 100 passes through the check valve 11, the expansion part 1152 changes the impedance of the sound wave propagation path, and the incident sound wave of the valve body 114 is diffused, decelerated, reflected by the wall, interfered with each other, and the like to consume energy, thereby reducing noise. The upstream connecting portion 1151 may have the same diameter as the downstream connecting portion 1153, wherein the upstream connecting portion 1151, the expansion portion 1152 and the downstream connecting portion 1153 may be integrally formed.

Referring to fig. 2, since the base 113 is connected to the damping pad 12, the base 113 has a shape corresponding to the damping pad 12. Wherein the damping post 1221 of the damping pad 12 is correspondingly installed in the check hole 1131 of the base 113. When the damping pad 12 is square, the base 113 is also square, and four check holes 1131 are correspondingly formed at four corners of the base 113. The first recessed portion 1132 is disposed at the bottom of the base 113, wherein the first recessed portion 1132 is also disposed in a square shape.

Specifically, in the direction from the upstream connection 1151 to the downstream connection 1153, the noise reduction passage 111 formed by the valve body 114 is gradually enlarged to increase the amount of smoke discharged and also to prevent backflow of the smoke.

In addition, as shown in fig. 3, a plurality of ribs 1141 are provided on the outer surface of the valve body 114, the ribs 1141 extend along the upstream connecting portion 1151 of the valve body 114 toward the base 113, and the radial width of the ribs 1141 gradually increases. By providing the reinforcing rib 1141, the strength of the valve body 114 can be improved. The number of the reinforcing ribs 1141 may be one, two or more, and the number thereof may be limited according to the actual situation. When the number of the reinforcing ribs 1141 is plural, the reinforcing ribs 1141 are distributed on the outer surface of the valve body 114 at intervals. The extending length of the reinforcing ribs 1141 can be determined according to actual conditions.

In the vibration reduction assembly, a first fixing structure is formed on the first side, facing the machine frame, of the vibration reduction pad and is used for fixedly connecting the machine frame; the damping pad is formed with the second fixed knot structure towards the second side of check valve for fixed connection check valve. The damping pad is connected with the cigarette machine frame and the check valve that correspond through first fixed knot structure and second fixed knot structure respectively promptly to make the structural vibration of cigarette machine frame can't transmit the second fixed knot through first fixed knot structure on, thereby blockked structural vibration propagation between cigarette machine frame and the check valve, realized between check valve and the cigarette machine frame exhaust port structural vibration's complete isolation, thereby reduced the noise that forms because of cigarette machine frame structural vibration.

Referring back to fig. 1, the cigarette maker 100 of the present embodiment includes a cigarette maker frame 101 and a vibration reduction assembly 1, wherein the vibration reduction assembly 1 is mounted on the cigarette maker frame 101. The vibration reduction assembly 1 is arranged on the cigarette machine frame 101, so that noise formed by structural vibration at the smoke outlet of the cigarette machine frame 101 at the cigarette machine 100 and air noise formed by a fan and the like in the cigarette machine 100 are reduced, the structural vibration transmission of the cigarette machine frame 101 is restrained, and meanwhile, the air noise can be reduced.

It should be noted that the damping module 1 in this embodiment is the embodiment described in the damping module 1 in the foregoing embodiment, and details are not described here.

The above description is only for the purpose of illustrating embodiments of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application or are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.

Claims (10)

1. A vibration attenuation module for a range hood chassis, comprising:

the check valve is communicated with a smoke exhaust port of the machine frame of the range hood;

the damping pad is arranged between the cigarette machine frame and the check valve; a first fixing structure is formed on the first side, facing the cigarette machine frame, of the vibration damping pad and is used for fixedly connecting the cigarette machine frame; the damping pad is formed with the second fixed knot structure towards the second side of check valve for fixed connection the check valve.

2. The damping assembly of claim 1, wherein the second securing structure comprises a damping post disposed through the check valve to connect the damping pad and the check valve; the first fixing structure includes a fixing hole for a fixing post to pass through the cigarette machine frame to connect to the fixing hole to connect the vibration reduction pad and the cigarette machine frame.

3. The damping assembly of claim 2, wherein the second fastening structure further comprises a damping cap, the removable cap being disposed on the damping post through the check valve.

4. The damping assembly of claim 2, wherein the securing hole is formed on the damping post.

5. The vibration dampening assembly of claim 4 wherein the vibration dampening pad is square shaped and the vibration dampening posts are formed at four angular positions of the vibration dampening pad.

6. The vibration damping assembly of claim 1 wherein the check valve is formed with a noise reduction channel, an inner surface of the noise reduction channel being formed with an annular groove.

7. The vibration damping assembly of claim 6 wherein said annular groove has a width of 0.03 to 0.2m and a depth of 0.165 to 0.21 m.

8. The vibration damping assembly of claim 6, wherein the check valve comprises:

the base is connected to the vibration damping pad;

the valve body is connected to the base;

the connecting body is connected to the valve body, and the valve body is positioned between the base and the connecting body; the connecting body comprises an upstream connecting part, an expansion part and a downstream connecting part, the upstream connecting part is connected to the valve body, and the expansion part is arranged between the upstream connecting part and the downstream connecting part; the expansion portion constitutes the annular groove.

9. Damping assembly according to claim 8, characterized in that the noise reduction channel formed by the valve body is gradually enlarged in the direction from the upstream connection to the downstream connection.

10. A machine as claimed in any one of claims 1 to 9, comprising a machine frame and a vibration reduction assembly.

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