CN214487447U

CN214487447U - Exhaust silencing device of pneumatic type flush coater

Info

Publication number: CN214487447U
Application number: CN202120290672.6U
Authority: CN
Inventors: 龙江
Original assignee: Chongqing Ounaishi Technology Co ltd
Current assignee: Chongqing Ounaishi Technology Co ltd
Priority date: 2021-02-02
Filing date: 2021-02-02
Publication date: 2021-10-26
Anticipated expiration: 2031-02-02

Abstract

The exhaust silencer of pneumatic coating machine includes one distributing block with exhaust passage, one silencer fixed to the left of the distributing block and communicated with the exhaust passage, and one lining net pipe, one sound absorbing sponge and one silencer casing set successively from inside to outside. The utility model discloses have following advantage: the spraying machine can be prevented from being stopped due to icing and blockage of the silencer.

Description

Exhaust silencing device of pneumatic type flush coater

Technical Field

The utility model relates to a flush coater field, concretely relates to pneumatic type flush coater's exhaust noise eliminator.

Background

The exhaust silencer of the existing pneumatic coating machine is generally that a silencer provided with a plurality of small holes is directly connected to a distribution block with an exhaust channel on the pneumatic coating machine.

The exhaust muffler device of the pneumatic type coating machine described above has the following disadvantages:

1. when the pneumatic type spraying machine normally works, the pneumatic motor can continuously reciprocate, and compressed air is discharged from the exhaust channel during each reversing. When the compressed air is discharged, the phenomenon of adiabatic expansion is inevitably generated, so that the temperature around the exhaust passage is rapidly reduced. Because the compressed air and the surrounding air contain moisture, except in high-temperature weather in summer, frost is quickly distributed on the silencer and the air distribution block, small holes in the silencer are gradually blocked by the frost, the blockage is quicker when the temperature is lower, and the blockage to a certain degree can cause unsmooth exhaust of an exhaust channel, so that the pneumatic type coating machine stops. In this case, the spraying machine can work normally only by taking the silencer off the gas distribution block; however, when the muffler is removed, the exhaust noise of the pneumatic type coating machine is very loud, and thus the pneumatic type coating machine does not meet the requirement of environmental protection.

2. The air distribution block is generally provided with an upper air exchange channel, a lower air exchange channel and an exhaust channel arranged between the upper air exchange channel and the lower air exchange channel; the upper middle part of the upper air exchange channel is provided with an upper channel cover plate which is integrated with the air distribution block, and the upper middle part of the lower air exchange channel is provided with a lower channel cover plate which is integrated with the air distribution block. The upper channel cover plate and the lower channel cover plate are integrally arranged with the air distribution block, sand cores are required to be used for casting and molding under the integrally arranged condition, and the upper air exchange channel and the lower air exchange channel which are cast by the sand cores are rough in surface and easy to accumulate ice.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an exhaust noise eliminator of pneumatic type flush coater can reduce exhaust noise by a wide margin, still can avoid pneumatic type flush coater because of the frozen shut down that blocks up and cause of silencer simultaneously.

The utility model aims at realizing like this, a pneumatic type flush coater's exhaust noise eliminator, including the distribution piece that has exhaust passage, distribution piece left side is fixed with the silencer with exhaust passage intercommunication, and the silencer includes inside lining net pipe, sound absorbing sponge and the silencer casing that sets gradually from inside toward outside.

The utility model discloses in, the theory of operation lies in: when the pneumatic type spraying machine freezes and freezes the air exhaust channel and the surrounding cooling frost due to 'adiabatic expansion', the frost can be directly blown out from the middle of the lining net pipe by the high-speed airflow discharged by the spraying machine, and a silencer and the air exhaust channel cannot be blocked; meanwhile, when high-speed airflow discharged by the spraying machine passes through the lining mesh pipe arranged in the silencer, sound waves can be reflected by the lining mesh pipe and absorbed by the sound-absorbing sponge, so that the effect of greatly reducing exhaust noise is achieved.

Owing to adopted above-mentioned scheme, consequently the utility model has the following advantage: the pneumatic spraying machine can avoid the shutdown of the pneumatic spraying machine caused by blocking a silencer due to the 'adiabatic expansion' cooling frost freezing, and can also greatly reduce the exhaust noise; even has the advantage of improving the surface quality of the upper ventilation channel and the lower ventilation channel so as to be beneficial to blowing out frost.

Drawings

The drawings of the utility model are as follows:

fig. 1 is a schematic structural view of the exhaust muffler device of the pneumatic type coating machine of the present invention.

Fig. 2 is a cross-sectional view taken at a-a in fig. 1.

Fig. 3 is a left side view of a gas distribution block in the exhaust muffler device of the pneumatic type coating machine.

Fig. 4 is a cross-sectional view at B-B in fig. 3.

In the figure: 1. a gas distribution block; 2. an upper ventilation channel; 3. an upper channel cover plate; 4. An exhaust passage; 5. a lower channel cover plate; 6. a lower ventilation channel; 7. heat exchange fins; 8. locking the screw; 9. bending the pipe; 10. a muffler adapter; 11. a muffler housing; 12. Sound-absorbing sponge; 13. Lining net pipes; 14. an annular groove.

Detailed Description

The invention will be further explained with reference to the following figures and examples:

in the present invention, the terms of orientation such as "upper", "lower", "left", "right" and the like are described with reference to fig. 1, and the orientation of the display device in specific use can be changed according to the actual application scene.

As shown in fig. 1 to 4, the exhaust muffler device of the pneumatic type coating machine comprises a gas distribution block 1 with an exhaust channel 4, wherein a muffler communicated with the exhaust channel 4 is fixed on the left side of the gas distribution block 1, and the muffler comprises an inner lining mesh pipe 13, a sound absorbing sponge 12 and a muffler shell 11 which are sequentially arranged from inside to outside.

The utility model discloses in, the theory of operation lies in: when the pneumatic type spraying machine freezes the air exhaust channel 4 and the surrounding cooling frost due to 'adiabatic expansion', the frost can be directly blown out from the middle of the lining net pipe 13 by the high-speed airflow discharged by the spraying machine, and a silencer and the air exhaust channel 4 cannot be blocked; meanwhile, when the high-speed airflow discharged by the coating machine passes through the lining mesh pipe 13 arranged in the silencer, the sound wave is reflected by the lining mesh pipe 13 and absorbed by the sound-absorbing sponge 12, so that the effect of greatly reducing the exhaust noise is achieved.

Furthermore, an elbow 9 communicated with the exhaust channel 4 is installed on the air distribution block 1, a locking screw 8 is arranged on the air distribution block 1 at a position corresponding to the right end face of the elbow 9, and the silencer is fixed on the elbow 9. In order to facilitate the muffler to be quickly and conveniently mounted or dismounted, in the embodiment, the elbow 9 is connected to the gas distribution block 1 through the threads, and the orientation of the elbow 9 is uncertain after the threads are screwed, so that the locking screw 8 is arranged at the position, corresponding to the right end face of the elbow 9, on the gas distribution block 1, and the locking screw 8 is used for: when the elbow 9 is turned fine to the desired orientation, the locking screw 8 is tightened to fix the orientation of the elbow 9. In other embodiments, the elbow 9 may also be secured to the gas distribution block 1 by welding, adhesive, integral arrangement, or other fastener means.

Further, in order to facilitate quick, simple and convenient mounting or dismounting of the muffler, in this embodiment the muffler is fixed to the elbow 9 by a muffler fitting 10. In other embodiments, the muffler may be secured to the elbow 9 by welding, bonding, integral placement, or other fastening means.

Further, in order to facilitate the processing and manufacturing of the muffler, in this embodiment, the upper end of the muffler shell 11 is fixedly connected to the muffler joint 10, and the lining mesh pipe 13 is sleeved on the excircle of the lower end of the muffler joint 10; the lower end of the silencer shell 11 is provided with an annular groove 14, and the lining net pipe 13 and the sound absorption sponge 12 are arranged in the annular groove 14. The utility model discloses in, the rigid coupling can be welded fastening, cohere fixed or through mode fixed connection such as fastener is fixed.

Furthermore, the air distribution block 1 further comprises an upper air exchange channel 2, a lower air exchange channel 6, an upper channel cover plate 3 and a lower channel cover plate 5, wherein the upper channel cover plate 3 is embedded into the air distribution block 1 and corresponds to the upper air exchange channel 2, and the lower channel cover plate 5 is embedded into the air distribution block 1 and corresponds to the lower air exchange channel 6. After the upper channel cover plate 3, the lower channel cover plate 5 and the gas distribution block 1 are embedded and arranged, the upper channel cover plate and the lower channel cover plate can be manufactured in a die-casting mode, so that the production efficiency of the gas distribution block 1 is improved in comparison with a mode that the upper channel cover plate 3, the lower channel cover plate 5 and the gas distribution block 1 are integrally arranged in the background technology, and the surface quality of the upper air exchange channel 2 and the surface quality of the lower air exchange channel 6 are improved, so that the advantage of blowing out frost is facilitated.

Further, the outer wall of the air distribution block 1 is provided with heat exchange fins 7. The heat exchange fins 7 are used for increasing the heat exchange area of the exhaust channel 4, the upper ventilation channel 2 and the lower ventilation channel 6, so that the phenomenon that the pneumatic type coating machine is frozen due to 'adiabatic expansion' of the exhaust channel 4 and the surrounding cooling frost is further reduced. In this embodiment, the outer wall of the left side of the air distribution block 1 is provided with 17 heat exchange fins 7, and in other embodiments, the outer wall of the air distribution block 1 can also be provided with other numbers of heat exchange fins 7. The heat exchange fins 7 can be arranged on the outer wall of the gas distribution block 1 in a welding fixing mode, an adhesion fixing mode, a fastening piece fixing mode or an integrated setting mode.

Claims

1. An exhaust muffler device of a pneumatic type coating machine, comprising a gas distribution block (1) with an exhaust passage (4), characterized in that: the left side of the gas distribution block (1) is fixed with a silencer communicated with the exhaust passage (4), and the silencer comprises an inner lining net pipe (13), a sound absorption sponge (12) and a silencer shell (11) which are sequentially arranged from inside to outside.

2. The exhaust muffler device for a pneumatic type coating machine according to claim 1, wherein: an elbow (9) communicated with the exhaust channel (4) is installed on the gas distribution block (1), a locking screw (8) is arranged at a position, corresponding to the right end face of the elbow (9), on the gas distribution block (1), and the silencer is fixed on the elbow (9).

3. The exhaust muffler device for a pneumatic type coating machine according to claim 2, wherein: the silencer is fixed on the elbow (9) through a silencer joint (10).

4. The exhaust muffler device for a pneumatic type coating machine according to claim 3, wherein: the upper end of the silencer shell (11) is fixedly connected with a silencer joint (10), and the lining net pipe (13) is sleeved on the excircle of the lower end of the silencer joint (10); the lower end of the silencer shell (11) is provided with an annular groove (14), and the lining net pipe (13) and the sound-absorbing sponge (12) are both arranged in the annular groove (14).

5. An exhaust muffler device for a pneumatic type coating machine according to claim 1, 2, 3 or 4, wherein: the air distribution block (1) further comprises an upper air exchange channel (2), a lower air exchange channel (6), an upper channel cover plate (3) and a lower channel cover plate (5), the upper channel cover plate (3) is embedded into the air distribution block (1) and corresponds to the upper air exchange channel (2), and the lower channel cover plate (5) is embedded into the air distribution block (1) and corresponds to the lower air exchange channel (6).

6. An exhaust muffler device for a pneumatic type coating machine according to claim 1, 2, 3 or 4, wherein: the outer wall of the gas distribution block (1) is provided with heat exchange fins (7).

7. The exhaust muffler device for a pneumatic type coating machine according to claim 5, wherein: the outer wall of the gas distribution block (1) is provided with heat exchange fins (7).