A muffler for chimney

Abstract

The present invention discloses a muffler for a chimney, which comprises a chimney body; the main points are that a muffler honeycomb tube is arranged at the top of the chimney body; a plurality of transversely transparent honeycomb holes are arranged around the circumferential arm of the muffler honeycomb tube; a rain shield is arranged at the top of the muffler honeycomb tube. The beneficial effects of the present invention are: the muffler honeycomb tube can disperse the high-temperature flue gas and effectively slow down the flow rate of the flue gas, and the flue gas can play a role in muffler and noise reduction while penetrating the muffler honeycomb tube. The overall structure is simple and exempts from later maintenance, and can be replaced regularly according to production conditions, with obvious cost advantages.

Description

Technical Field

[0001] The invention belongs to the technical field of silencer equipment, and in particular relates to a silencer for a chimney. Background Art

[0002] In the existing technology, when plate production enterprises heat treat plates, they will generate a lot of flue gas. The traditional way is to discharge it directly. Although the environmental protection standards of flue gas can meet the requirements, the flue gas will generate a lot of noise pollution when it is discharged, which can reach 80 decibels. The noise can be heard more obviously within 3 kilometers around, especially the noise is louder within the working range. At present, they are protected by wearing earmuffs, so the noise pollution is large and the working environment of workers is poor. There are also noise reduction products, but the procurement cost is high and the structure is complex. The later maintenance depends entirely on the product provider. If maintenance is carried out, it will also have a great impact on the production progress. Summary of the invention

[0003] The purpose of the present invention is to solve the above technical problems existing in the prior art and to provide a muffler for a chimney to overcome the shortcomings of the prior art.

[0004] In order to achieve the above-mentioned purpose, the present invention provides a silencer for a chimney, which includes a chimney body; the key points are that a silencer honeycomb tube is provided at the top of the chimney body; a plurality of transversely transparent honeycomb holes are provided on the peripheral arms of the silencer honeycomb tube; and a rain shield is provided at the top of the silencer honeycomb tube.

[0005] Furthermore, the outer wall of the sound-absorbing honeycomb tube protrudes from the outer wall of the chimney body by 4 cm, and the inner wall of the sound-absorbing honeycomb tube protrudes from the inner wall of the chimney body by 4 cm.

[0006] Furthermore, the diameter of the honeycomb holes is 4-6 mm.

[0007] Furthermore, the honeycomb holes have a hole spacing of 6-10 mm.

[0008] As another inventive aspect of the present invention, it also relates to an improvement in the material of the sound-absorbing honeycomb tube;

[0009] The muffler honeycomb tube is prepared according to the following process:

[0010] 1) Mix hydrogenated nitrile rubber, polytetrafluoroethylene, polycarbonate and stearic acid evenly, add into internal mixer, mix at 90°C for 4-8 minutes to obtain main material;

[0011] 2) Adding di-n-octyl phthalate to a reaction kettle containing polyvinyl chloride paste resin, stirring until uniformly forming a polymer concentrated solution; adding glass fiber and graphene to the polymer concentrated solution, dispersing at 1000-2000 rpm for 5-10 minutes to obtain a feed solution;

[0012] 3) Add the main ingredients to the liquid, stir, and after it is uniform, pour it directly into the steel plate mold, and then place it on an internal mixer and plasticize it at 170°C for 20 minutes, press it into shape, and demold it after natural cooling.

[0013] Furthermore, the mass ratio of di-n-octyl phthalate, polyvinyl chloride paste resin, glass fiber and graphene is 10-20:3-5:1-2:1-2.

[0014] Furthermore, the hydrogenated nitrile rubber, polytetrafluoroethylene, polycarbonate and stearic acid are uniformly mixed in a mass ratio of 10-20:4-8:1-3:1-2.

[0015] Compared with the prior art, the effects of the present invention mainly include but are not limited to the following aspects:

[0016] The silencer honeycomb tube can disperse the high-temperature smoke and effectively slow down the flow rate of the smoke. The smoke can penetrate the silencer honeycomb tube and reduce noise. The overall structure is simple and free of later maintenance. It can be replaced regularly according to production conditions, with obvious cost advantages.

[0017] The present invention also relates to the improvement of the sound-absorbing honeycomb tube material. The polymer materials used in the prior art are mostly insulating materials, and the polarized charges generated by them cannot be conducted out through the polymer matrix material. Without the formation of electric current, heat cannot be generated, and the sound waves cannot be dissipated well through the material. Graphene has good electrical conductivity, but poor interface bonding with the resin, and cannot be well formed. It must be surface treated to improve its compatibility with the resin. Glass fiber has good mechanical strength and flame retardant properties, and can be dispersed in the resin to form a mesh pore structure. During the sound wave conduction process, the sound energy is converted into heat energy, thereby achieving the effect of absorbing waves and reducing noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention.

[0019] Figure 2 It is a schematic front view of the structure of the silencer honeycomb tube in the present invention.

[0020] In the figure, 1, chimney body 2, muffler honeycomb tube 3, rain shield 4, honeycomb hole. DETAILED DESCRIPTION

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Example 1

[0023] Reference Figure 1 and Figure 2 The present invention discloses a muffler for a chimney, which comprises a chimney body 1; a muffler honeycomb tube 2 is arranged at the top of the chimney body 1; a plurality of transversely transparent honeycomb holes 4 are arranged around the periphery of the muffler honeycomb tube 2; a rain shield 3 is arranged at the top of the muffler honeycomb tube 2.

[0024] Furthermore, the outer wall of the sound-absorbing honeycomb tube 2 protrudes from the outer wall of the chimney body 1 by 4 cm, and the inner wall of the sound-absorbing honeycomb tube 2 protrudes from the inner wall of the chimney body 2 by 4 cm.

[0025] Furthermore, the diameter of the honeycomb holes 4 is 4-6 mm.

[0026] Furthermore, the hole spacing of the honeycomb holes 4 is 6-10 mm.

[0027] The beneficial effects of the present invention are:

[0028] The silencer honeycomb tube can disperse the high-temperature smoke and effectively slow down the flow rate of the smoke. The smoke can penetrate the silencer honeycomb tube and reduce noise. The overall structure is simple and free of later maintenance. It can be replaced regularly according to production conditions, with obvious cost advantages.

[0029] Example 2

[0030] As another inventive point of the present invention, it also relates to an improvement in the material of the sound-absorbing honeycomb tube; the sound-absorbing honeycomb tube is prepared according to the following process:

[0031] The hydrogenated nitrile rubber, polytetrafluoroethylene, polycarbonate and stearic acid were uniformly mixed in a mass ratio of 20:7:2:1, added into an internal mixer, and kneaded at a temperature of 90° C. for 5 minutes to obtain a main material;

[0032] Adding di-n-octyl phthalate to a reaction kettle filled with polyvinyl chloride paste resin, stirring until uniformly forming a concentrated polymer solution; adding glass fiber and graphene to the concentrated polymer solution, dispersing at 2000 rpm for 10 minutes to obtain a feed solution; the mass ratio of di-n-octyl phthalate, polyvinyl chloride paste resin, glass fiber and graphene is 10:3:1:1;

[0033] Add the main material to the same weight of the liquid, stir, and pour it directly into the steel plate mold after it is uniform. Then, place it on an internal mixer and plasticize it at 170°C for 20 minutes, press it into shape, and demould it after natural cooling.

[0034] Example 3

[0035] As another inventive point of the present invention, it also relates to an improvement in the material of the sound-absorbing honeycomb tube; the sound-absorbing honeycomb tube is prepared according to the following process:

[0036] The hydrogenated nitrile rubber, polytetrafluoroethylene, polycarbonate and stearic acid were uniformly mixed in a mass ratio of 30:12:3:2, added into an internal mixer, and kneaded at a temperature of 90° C. for 5 minutes to obtain a main material;

[0037] Adding di-n-octyl phthalate to a reaction kettle containing polyvinyl chloride paste resin, stirring until uniformly forming a polymer concentrated solution; adding glass fiber and graphene to the polymer concentrated solution, dispersing at 2000 rpm for 10 minutes to obtain a feed solution; the mass ratio of di-n-octyl phthalate, polyvinyl chloride paste resin, glass fiber and graphene is 15:4:2:2;

[0038] Add the main material to the same weight of the liquid, stir, and pour it directly into the steel plate mold after it is uniform. Then, place it on an internal mixer and plasticize it at 170°C for 20 minutes, press it into shape, and demould it after natural cooling.

[0039] Comparative Example 1

[0040] A sound-absorbing honeycomb tube is prepared according to the following process:

[0041] The hydrogenated nitrile rubber, polytetrafluoroethylene, polycarbonate and stearic acid were uniformly mixed in a mass ratio of 20:7:2:1, added into an internal mixer, and kneaded at a temperature of 90° C. for 5 minutes to obtain a main material;

[0042] Adding dioctyl phthalate to a reaction kettle containing polyvinyl chloride paste resin and stirring until a polymer concentrated solution is formed; adding glass fiber to the polymer concentrated solution and dispersing at 2000 rpm for 10 minutes to obtain a feed solution; the mass ratio of dioctyl phthalate, polyvinyl chloride paste resin and glass fiber is 10:3:1;

[0043] Add the main material to the same weight of the liquid, stir, and pour it directly into the steel plate mold after it is uniform. Then, place it on an internal mixer and plasticize it at 170°C for 20 minutes, press it into shape, and demould it after natural cooling.

[0044] Comparative Example 2

[0045] A sound-absorbing honeycomb tube is prepared according to the following process:

[0046] The hydrogenated nitrile rubber, polytetrafluoroethylene, polycarbonate and stearic acid were uniformly mixed in a mass ratio of 20:7:2:1, added into an internal mixer, and kneaded at a temperature of 90° C. for 5 minutes to obtain a main material;

[0047] Adding di-n-octyl phthalate to a reaction kettle containing polyvinyl chloride paste resin, stirring until a polymer concentrated solution is uniformly formed; adding graphene to the polymer concentrated solution, dispersing at 2000 rpm for 10 minutes to obtain a feed solution; the mass ratio of di-n-octyl phthalate, polyvinyl chloride paste resin and graphene is 10:3:1;

[0048] Add the main material to the same weight of the liquid, stir, and pour it directly into the steel plate mold after it is uniform. Then, place it on an internal mixer and plasticize it at 170°C for 20 minutes, press it into shape, and demould it after natural cooling.

[0049] Example 4

[0050] The sound absorption effects of the composite materials of Examples 2-3 and Comparative Examples 1-2 are compared, and the specific sound absorption effects are shown in Table 1.

[0051] Table 1

[0052] Sound absorption coefficient Hz Example 2 Example 3 Comparative Example 1 Comparative Example 2 250 0.36 0.35 0.26 0.28 500 0.31 0.32 0.19 0.23 1000 0.27 0.28 0.16 0.18 2000 0.24 0.25 0.13 0.14

[0053] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be construed as limitations on the present invention. Those of ordinary skill in the art can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A muffler for a chimney, comprising a chimney body (1); The chimney is characterized in that a sound-absorbing honeycomb tube (2) is provided at the top of the chimney body (1); a plurality of transversely transparent honeycomb holes (4) are provided around the periphery of the sound-absorbing honeycomb tube (2); a rain shield (3) is provided at the top of the sound-absorbing honeycomb tube (2); The outer wall of the sound-absorbing honeycomb tube (2) protrudes from the outer wall of the chimney body (1) by 4 cm, and the inner wall of the sound-absorbing honeycomb tube (2) protrudes from the inner wall of the chimney body (1) by 4 cm; The muffler honeycomb tube is prepared according to the following process: 1) mixing hydrogenated nitrile rubber, polytetrafluoroethylene, polycarbonate and stearic acid uniformly, adding into an internal mixer, and mixing at 90° C. for 4-8 minutes to obtain a main material; 2) adding di-n-octyl phthalate to a reaction kettle containing polyvinyl chloride paste resin, stirring until a polymer concentrated solution is uniformly formed; adding glass fiber and graphene to the polymer concentrated solution, dispersing at 1000-2000 rpm for 5-10 minutes, to obtain a feed solution; 3) Add the main material to the same weight of the liquid, stir, and pour it directly into the steel plate mold after it is uniform, and then place it on an internal mixer for plastication at 170°C for 20 minutes, mold it, and demould it after natural cooling; The mass ratio of di-n-octyl phthalate, polyvinyl chloride paste resin, glass fiber and graphene is 10-20:3-5:1-2:1-2; The hydrogenated nitrile rubber, polytetrafluoroethylene, polycarbonate and stearic acid are uniformly mixed in a mass ratio of 10-20:4-8:1-3:1-2.

2. A muffler for a chimney according to claim 1, characterized in that: The pore diameter of the honeycomb hole (4) is 4-6 mm.

3. A muffler for a chimney according to claim 1, characterized in that: The hole spacing of the honeycomb holes (4) is 6-10 mm.

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