Combined silencer and assembling method

Abstract

The invention discloses a combined silencer and an assembling method, relates to the field of compressed air purification treatment, and aims to realize modular structures of parts, quickly realize disassembly and assembly, facilitate after-sales maintenance and improve the silencing effect. A combined silencer comprises a rear end cover, a central pipe, a silencing component and a front end cover. One end of the central tube is connected with the rear end cover. The silencing part is arranged on the central pipe in a sleeving mode and connected with the rear end cover. The front end cover is arranged on the central pipe in a sleeving mode and connected with the silencing component. The combined silencer is provided with the two silencing components including the central pipe and the silencing component, double silencing is achieved, the silencing effect is greatly improved, meanwhile, the silencer is planned into the rear end cover, the central pipe, the silencing component and the front end cover, modular assembly is achieved, disassembly and assembly can be rapidly achieved, and after-sales maintenance is facilitated.

Description

Technical Field

[0001] The invention relates to the field of compressed air purification, and in particular to a combined silencer and an assembling method thereof. Background Art

[0002] Adsorption dryers are usually equipped with two non-connected cavities on the left and right. One cavity deeply adsorbs and removes water from the compressed air in the passage - that is, the adsorption process. Most of the dry air after adsorption enters the rear-end gas-using equipment through the air outlet, and a small part of the dry air enters the other cavity through the throttling channel to purge the adsorbent that has absorbed the water. After the purge, the air carrying a large amount of water is discharged from the dryer through the exhaust port. In order to control the noise generated by the dryer exhaust process, existing manufacturers will install a silencer at the dryer exhaust port in order to achieve the purpose of reducing noise. The existing commonly used dryer silencer is mainly composed of front and rear end panels, inner and outer lining nets, and a middle sound-absorbing layer that are locked with screws.

[0003] The existing silencers have insufficient structural strength and poor impact resistance, and end plates and linings are often damaged, seriously affecting the silencer effect.

[0004] Existing silencers mainly use sound-absorbing materials to consume energy to achieve noise reduction, which has many limitations. The final noise reduction effect is directly related to the thickness of the noise-absorbing material. If the noise-absorbing material is too thin, there is basically no noise reduction effect. If the noise-absorbing material is too thick, the exhaust resistance is too large, affecting the normal discharge of exhaust gas, and then affecting the performance of the dryer. Therefore, it is difficult to achieve an ideal noise reduction effect by using only noise-absorbing materials for noise reduction. Summary of the invention

[0005] The purpose of the present invention is to solve at least one of the technical problems existing in the prior art, and to provide a combined silencer and an assembly method, which can realize a modular structure of parts and components, can be quickly disassembled and assembled, and is convenient for after-sales maintenance, while improving the silencer effect.

[0006] According to a first aspect of the present invention, there is provided a combined silencer, comprising a rear end cover, a center pipe, a silencer component and a front end cover, wherein one end of the center pipe is connected to the rear end cover, the silencer component is sleeved on the center pipe and connected to the rear end cover, and the front end cover is sleeved on the center pipe and connected to the silencer component.

[0007] According to a combined silencer described in the first aspect of the present invention, the central tube includes a tube body, one end of the tube body is provided with a rear cover mounting port, the other end is provided with a silencer mounting port, the tube body is provided with a plurality of rows of silencer hole rings, the silencer hole rings are composed of a plurality of silencer holes, the plurality of silencer holes are evenly distributed along the circumference of the tube body, and the airflow enters the tube body from the silencer mounting port and is discharged from the plurality of silencer holes.

[0008] According to the combined silencer described in the first aspect of the present invention, the distance between two adjacent silencer hole rings gradually decreases along the direction from the silencer mounting opening to the rear cover mounting opening.

[0009] According to the combined silencer described in the first aspect of the present invention, the axis of the silencer hole is at an inclination angle a with the axis of the tube body.

[0010] According to the combined silencer described in the first aspect of the present invention, the range of the inclination angle a is 0°≤a<90°.

[0011] According to the combined silencer described in the first aspect of the present invention, the front end cover and the center pipe are formed integrally.

[0012] According to the combined silencer described in the first aspect of the present invention, the front end cover is connected to the center pipe by welding.

[0013] According to a combined silencer described in the first aspect of the present invention, the silencer component includes an end, an outer lining mesh, a sound absorbing layer, an inner lining mesh and a sealing protrusion, the outer lining mesh and the inner lining mesh are respectively attached to both sides of the sound absorbing layer, the end is located at both ends of the sound absorbing layer, and the sealing protrusion is located on the end.

[0014] According to the combined silencer described in the first aspect of the present invention, there are a plurality of silencer components, and the plurality of silencer components are connected via a mounting plate.

[0015] According to a second aspect of the present invention, there is provided a method for assembling a combined silencer, which uses a combined silencer according to the first aspect, and comprises the following steps:

[0016] Align the front end cover: Put the front end cover on the center tube and perform spot welding to align it;

[0017] Optional silencer components: Optional silencer components are installed according to the length required by the design;

[0018] Installation of silencer components: Put the silencer components on the center pipe;

[0019] Align the rear cover: insert the rear cover into the rear cover installation port and tighten it.

[0020] According to the present invention, at least the following beneficial effects are achieved: a combined silencer includes a rear end cover, a center pipe, a silencer component, and a front end cover. One end of the center pipe is connected to the rear end cover. The silencer component is sleeved on the center pipe and connected to the rear end cover. The front end cover is sleeved on the center pipe and connected to the silencer component. A combined silencer of the present invention is provided with two silencer components, namely, a center pipe and a silencer component, to achieve double silencer and greatly improve the silencer effect. At the same time, the silencer is planned to be divided into four parts, namely, a rear end cover, a center pipe, a silencer component, and a front end cover, to achieve modular assembly, and can be quickly disassembled and assembled, facilitating after-sales maintenance.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention is further described below in conjunction with the accompanying drawings and embodiments;

[0023] Figure 1 A front view of a preferred embodiment of the present invention;

[0024] Figure 2 A cross-sectional view of a preferred embodiment of the present invention;

[0025] Figure 3 A cross-sectional view of a central tube in a preferred embodiment of the present invention;

[0026] Figure 4 A cross-sectional view of a muffler component according to a preferred embodiment of the present invention;

[0027] Figure 5 FIG. 4 is an air flow diagram of a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0028] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0029] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0030] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0031] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0032] Reference Figures 1 to 5 A combined silencer includes a rear end cover 1, a center pipe 2, a silencer component 3 and a front end cover 4. One end of the center pipe 2 is connected to the rear end cover 1. The silencer component 3 is sleeved on the center pipe 2 and connected to the rear end cover 1. The front end cover 4 is sleeved on the center pipe 2 and connected to the silencer component 3.

[0033] It can be understood that a combined silencer of the present invention is provided with two silencer components, namely a central pipe 2 and a silencer component 3, to achieve double silencer and greatly improve the silencer effect. At the same time, the silencer is planned into four parts: a rear end cover 1, a central pipe 2, a silencer component 3 and a front end cover 4, to achieve modular assembly, which can be quickly disassembled and assembled, and is convenient for after-sales maintenance.

[0034] Reference Figures 1 to 5 The central tube 2 includes a tube body 21. A rear cover mounting port 22 is provided at one end of the tube body 21, and a muffler mounting port 23 is provided at the other end. A plurality of rows of muffler hole rings 24 are provided on the tube body 21. The muffler hole rings 24 are composed of a plurality of muffler holes 241. The plurality of muffler holes 241 are evenly distributed along the circumference of the tube body 21. The airflow enters the tube body 21 from the muffler mounting port 23 and is discharged from the plurality of muffler holes 241.

[0035] It is worth noting that, in the embodiment of the present invention, some noise elimination can be achieved through a plurality of silencer holes 241, and the principle is as follows:

[0036] The gas flows in the central tube 2 and is ejected from the muffler hole 241. Due to the different impedance cross sections, part of the sound waves returns to the sound source.

[0037] Since the sound power is proportional to the higher power of the gas flow rate, and the gas flow rate is proportional to the pressure drop, the gas is injected through the silencer hole 241 to disperse the pressure drop, thereby reducing the gas flow rate and the sound power.

[0038] Reference Figures 1 to 5In some embodiments of the present invention, the distance between two adjacent silencer hole rings 24 gradually decreases along the direction from the silencer installation opening 23 to the rear cover installation opening 22 .

[0039] It is worth noting that, in some embodiments of the present invention, the farther away from the muffler installation opening 23 , the smaller the spacing between the muffler hole rings 24 .

[0040] It is worth noting that, in some embodiments of the present invention, the farther away from the muffler installation opening 23 , the more muffler holes 241 there are in each row of the muffler hole rings 24 .

[0041] Reference Figure 3 The axis of the silencer hole 241 is at an inclination angle a with the axis of the tube body 21.

[0042] It is worth noting that, in some embodiments of the present invention, the range of the inclination angle a is 0°≤a<90°.

[0043] Reference Figure 4 The sound-absorbing component 3 includes an end portion 31, an outer lining mesh 32, a sound-absorbing layer 33, an inner lining mesh 34, and a sealing protrusion 35. The outer lining mesh 32 and the inner lining mesh 34 are respectively attached to both sides of the sound-absorbing layer 33. The end portion 31 is located at both ends of the sound-absorbing layer 33. The sealing protrusion 35 is located on the end portion 31.

[0044] Since the number of openings of the silencer holes 241 on each row of silencer hole rings 24 on the central tube 2 is greater the farther away from the air flow inlet, the silencer holes 241 at the far end of the air flow inlet have a large flow rate, while the silencer holes at the near end of the air flow inlet have a small flow rate. Since the silencer holes 241 are arranged obliquely, the gas entering and discharged from the silencer holes 241 continues to move axially in the silencer cavity after colliding with the inner wall of the lining mesh 34 of the silencer component 3, and collides with the gas discharged from other groups of silencer holes 241, which greatly consumes gas energy and realizes the first silencer. After that, the gas is discharged into the atmosphere through the sound absorbing layer 33, and flows through the sound absorbing layer 33 to realize the secondary silencer.

[0045] It is worth noting that, in some embodiments of the present invention, the front end cover 4 and the center tube 2 are integrally formed.

[0046] Through one-piece molding, the length of the product weld can be reduced and the impact of welding stress on product life can be reduced.

[0047] It is worth noting that, in some embodiments of the present invention, the front end cover 4 is connected to the center tube 2 by welding.

[0048] Through welding connection, the product length specifications can be made more varied, thus improving market competitiveness.

[0049] It is worth noting that, in some embodiments of the present invention, there are multiple silencer components 3 , and the multiple silencer components 3 are connected via a mounting plate 5 .

[0050] It is understandable that, in some embodiments, the silencer component 3 can be cut and assembled as required without limiting the length.

[0051] It can be understood that in some other embodiments, the silencer component 3 can be of fixed length to achieve modular assembly.

[0052] A combined silencer assembly method comprises the following steps:

[0053] Align the front end cover: put the front end cover 4 on the center tube 2 and perform spot welding for alignment;

[0054] Optional silencer components: Optional silencer components 3 according to the length required by the design;

[0055] Installation of silencer components: Put silencer component 3 on the central tube 2;

[0056] Align the rear end cover: insert the rear end cover 1 into the rear cover installation opening 22 and tighten it.

[0057] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A combined silencer, characterized in that: include: A rear end cover (1), a center pipe (2), a silencer component (3) and a front end cover (4), wherein one end of the center pipe (2) is connected to the rear end cover (1), the silencer component (3) is sleeved on the center pipe (2) and connected to the rear end cover (1), and the front end cover (4) is sleeved on the center pipe (2) and connected to the silencer component (3).

2. A combined silencer according to claim 1, characterized in that: The central tube (2) comprises a tube body (21), one end of the tube body (21) is provided with a rear cover mounting opening (22), and the other end is provided with a silencer mounting opening (23), a plurality of rows of silencer hole rings (24) are provided on the tube body (21), the silencer hole rings (24) are composed of a plurality of silencer holes (241), and the plurality of silencer holes (241) are evenly distributed along the circumference of the tube body (21), and airflow enters the tube body (21) from the silencer mounting opening (23) and is discharged from the plurality of silencer holes (241).

3. A combined silencer according to claim 2, characterized in that: Along the direction from the muffler mounting opening (23) to the rear cover mounting opening (22), the distance between two adjacent muffler hole rings (24) gradually decreases.

4. A combined silencer according to claim 2, characterized in that: The axis of the silencer hole (241) is at an inclination angle a with the axis of the tube body (21).

5. A combined silencer according to claim 4, characterized in that: The range of the inclination angle a is 0°≤a<90°.

6. A combined silencer according to claim 1, characterized in that: The front end cover (4) and the center tube (2) are integrally formed.

7. A combined silencer according to claim 1, characterized in that: The front end cover (4) is connected to the center tube (2) by welding.

8. A combined silencer according to claim 1, characterized in that: The sound-absorbing component (3) comprises an end portion (31), an outer lining mesh (32), a sound-absorbing layer (33), an inner lining mesh (34) and a sealing protrusion (35); the outer lining mesh (32) and the inner lining mesh (34) are respectively attached to two sides of the sound-absorbing layer (33); the end portion (31) is located at two ends of the sound-absorbing layer (33); and the sealing protrusion (35) is located on the end portion (31).

9. A combined silencer according to any one of claims 1 to 8, characterized in that: There are a plurality of the silencing components (3), and the plurality of the silencing components (3) are connected via a mounting plate (5).

10. A method for assembling a combined silencer, characterized in that: The following steps are involved: Aligning the front end cover: putting the front end cover (4) on the center tube (2) and spot welding it; Optional silencer components: Optional silencer components (3) are installed according to the length required by the design; Installation of the silencer component: Sleeve the silencer component (3) onto the central tube (2); Align the rear cover: Insert the rear cover (1) into the rear cover installation opening (22) and tighten it.

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