A noise-absorbing gas mixing device

Abstract

The present invention relates to a silencing gas mixing device, a silencing gas mixing device, comprising a gas mixing chamber and a silencing gas mixing component arranged in the gas mixing chamber, characterized in that the gas mixing chamber is a square shell, an air inlet I is arranged at the left end of the gas mixing chamber, an air inlet II is arranged at the upper end, and a mixed gas outlet is arranged at the right end, the silencing gas mixing component comprises a plurality of silencing baffles arranged in the gas mixing chamber 1 and a plurality of guide plates I and a plurality of guide plates II respectively connected to the silencing baffles, the lower ends of the plurality of silencing baffles are fixedly connected to the inner wall of the square shell, a guide plate I is arranged at the left end of each two silencing baffles to form a transverse air flow channel corresponding to the air inlet I, and a guide plate II is arranged at the upper end of each two silencing baffles to form a longitudinal air flow channel corresponding to the air inlet II. The advantages are: the silencing and gas mixing structures are combined into one, which can save space, and not only has a silencing effect, but also has a good air flow mixing effect.

Description

Technical Field

[0001] The invention belongs to the technical field of sintering and pelletizing of iron and steel metallurgy, and in particular relates to a noise-reducing and gas-mixing device. Background Art

[0002] Sintering and pelletizing are important raw material processing links in steel enterprises. A large amount of flue gas and waste gas are generated in the production process. Among them, the exhaust gas generated by roasting flue gas or cooling finished ore contains both pollutants and a certain amount of heat. In order to reduce air pollution and recover waste heat, a part of suitable flue gas or exhaust gas can be recycled in the production process. The common practice is to introduce the flue gas or exhaust gas into the air inlet of the fan instead of normal temperature air. In order to adapt to changes in working conditions, the normal temperature air inlet is usually retained at the fan inlet, and a muffler is installed at the air inlet.

[0003] When the fan uses both normal temperature air and recycled flue gas or waste gas, the problem of mixing the two airflows arises. In existing applications, only a three-way pipe is set between the normal temperature air inlet silencer and the fan air inlet. The two airflows merge in the three-way pipe and directly enter the fan. Eddy currents will be generated at the junction, causing noise and vibration. If the temperature difference between the two airflows is large, if they are not fully mixed, uneven deformation of the structural parts will occur, which will have a negative impact on the service life of the fan in severe cases. No effective solution has been proposed for the above problems.

[0004] In order to enhance the mixing effect of the two air flows in a limited space and avoid excessive noise and vibration, it is necessary to install a mixing device at the fan inlet. Summary of the invention

[0005] The object of the present invention is to provide a noise-eliminating gas-mixing device which has a simple structure and can complete the mixing process of two air flows in a relatively small space and has a noise-eliminating effect.

[0006] The objective of the present invention is achieved through the following technical solutions:

[0007] A silencer and air-mixing device of the present invention comprises a mixing chamber and a silencer and air-mixing assembly arranged in the mixing chamber, characterized in that the mixing chamber is a square shell, an air inlet I is arranged at the left end, an air inlet II is arranged at the upper end, and a mixed gas outlet is arranged at the right end, the silencer and air-mixing assembly comprises a plurality of silencer baffles arranged in the mixing chamber 1 and a plurality of guide plates I and a plurality of guide plates II respectively connected to the silencer baffles, the lower ends of the plurality of silencer baffles are fixedly connected to the inner wall of the square shell, a guide plate I is arranged at the left end of every two silencer baffles to form a transverse airflow channel corresponding to the air inlet I, and a guide plate II is arranged at the upper end of every two silencer baffles to form a longitudinal airflow channel corresponding to the air inlet II.

[0008] The noise-absorbing baffle is a square noise-absorbing baffle, the surface of which is a porous steel plate and the interior of which is filled with noise-absorbing materials.

[0009] The guide plates I are arranged sequentially starting from odd numbers, and the guide plates II are arranged sequentially starting from even numbers, so that the transverse air flow channels and the longitudinal air flow channels are arranged alternately.

[0010] Advantages of the present invention:

[0011] (1) The silencing gas mixing device of the present invention combines the structure of the silencing device and the gas flow dividing device into one, which can save space and has a silencing effect while cutting and distributing the gas flow;

[0012] (2) The noise-reducing mixing device of the present invention allows two airflows to be cut and staggered into the mixing device, thereby avoiding mutual impact between the two airflows, reducing the generation of vortices, and reducing vibration and noise;

[0013] (3) The silencer gas mixing device of the present invention allows the two gases to be arranged alternately and orderly before leaving the outlet of the silencer gas mixing device, thereby enhancing the mixing effect of the airflow. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the present invention;

[0015] Figure 2 for Figure 1 AA cross-section diagram.

[0016] Figure 3 for Figure 1 BB cross-section diagram.

[0017] Figure 4 Schematic diagram of the opening of the sound-absorbing baffle.

[0018] Figure 5 for Figure 4 CC cross-section diagram. DETAILED DESCRIPTION

[0019] The specific implementation of the present invention is further described below in conjunction with the accompanying drawings.

[0020] like Figure 1-Figure 5As shown, a silencing gas mixing device of the present invention comprises a gas mixing chamber 1 and a silencing gas mixing component arranged in the gas mixing chamber 1, characterized in that the gas mixing chamber 1 is a square shell, an air inlet Ⅰ2 is arranged at the left end of the gas mixing chamber 1, an air inlet Ⅱ3 is arranged at the upper end, and a mixed gas outlet 4 is arranged at the right end, the silencing gas mixing component comprises a plurality of silencing baffles 5 arranged in the gas mixing chamber 1 and a plurality of guide plates Ⅰ6 and a plurality of guide plates Ⅱ7 respectively connected to the silencing baffles 5, the silencing baffles are square silencing baffles, and the silencing baffles 5 are provided. The surface is a porous steel plate, and the interior is filled with sound-absorbing material 8. The lower ends of the several sound-absorbing baffles 5 are fixedly connected to the inner wall of the square shell. A guide plate I6 is provided at the left end of every two sound-absorbing baffles 5 to form a transverse airflow channel corresponding to the air inlet I2. A guide plate II7 is provided at the upper end of every two sound-absorbing baffles 5 to form a longitudinal airflow channel corresponding to the air inlet II3. The guide plates I are arranged in sequence starting from odd numbers, and the guide plates II are arranged in sequence starting from even numbers, so that the transverse airflow channels and the longitudinal airflow channels are staggered.

[0021] The method of using the noise-eliminating gas mixing device of the present invention is as follows:

[0022] like Figure 1-Figure 4 As shown, the mixing chamber 1 is divided into multiple air flow channels by the silencer baffle 5. The transverse air flow enters the mixing chamber 1 from the air inlet Ⅰ2, and the longitudinal air flow enters the mixing chamber 1 from the air inlet Ⅱ3. The two air flows are cut and split by the guide plate Ⅰ6 and the guide plate Ⅱ7 respectively. The transverse air flow enters the even-numbered air flow channel after passing through the guide plate Ⅰ6, and the longitudinal air flow enters the odd-numbered air flow channel after passing through the guide plate Ⅱ7. The two gases are alternately arranged in the mixing chamber. Through the above method, the contact surface of the two gases after leaving the mixing chamber 1 is doubled, and the two gases can fully contact at the air outlet 4 and quickly complete the mixing process.

[0023] Figure 1 This is only an example of an implementation mode. In actual applications, the number and spacing of the air flow channels in the mixing chamber can be determined according to the ratio of the two gases and the actual flow rates.

Claims

1. A noise-eliminating gas-mixing device, comprising a gas-mixing chamber and a noise-eliminating gas-mixing assembly arranged in the gas-mixing chamber, It is characterized in that The mixing chamber is a square shell, with an air inlet I at the left end, an air inlet II at the upper end, and a mixed gas outlet at the right end. The silencer mixing assembly includes a plurality of silencer baffles arranged in the mixing chamber and a plurality of guide plates I and a plurality of guide plates II respectively connected to the silencer baffles. The lower ends of the plurality of silencer baffles are fixedly connected to the inner wall of the square shell. A guide plate I is provided at the left end of every two silencer baffles to form a transverse airflow channel corresponding to the air inlet I, and a guide plate II is provided at the upper end of every two silencer baffles to form a longitudinal airflow channel corresponding to the air inlet II. The guide plates I are arranged sequentially starting from odd numbers, and the guide plates II are arranged sequentially starting from even numbers, so that the transverse airflow channels and the longitudinal airflow channels are arranged alternately.

2. The silencing gas mixing device according to claim 1, It is characterized in that The sound-absorbing baffle is square, the surface of the sound-absorbing baffle is a porous steel plate, and the interior is filled with sound-absorbing materials.

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