Sound-absorbing ventilating duct for hot blast stove

Abstract

The utility model relates to the field of hot blast stoves, in particular to a sound-absorbing ventilating duct for a hot blast stove, which comprises a duct body, a sound-absorbing cotton mounting groove arranged along the circumferential direction of the duct body is arranged on the outer side wall of the duct body, sound-absorbing cotton is arranged in the sound-absorbing cotton mounting groove, and a mounting step is further arranged on the outer side wall of the duct body. And a sealing plate for sealing the sound-absorbing cotton mounting groove is arranged at the mounting step. According to the utility model, noise caused when air flows in the pipeline body can be well reduced through the sound-absorbing cotton and the sealing cavity formed by the sealing plate and the sound-absorbing cotton mounting groove. Therefore, interference of noise to production and life of people is avoided, and compared with the mode that the sound-absorbing cotton is directly installed on the pipeline body, the sound-absorbing cotton is more convenient to install and replace.

Description

Technical Field

[0001] The utility model relates to the field of hot blast stoves, and specifically to a sound-absorbing ventilation duct for a hot blast stove. Background Art

[0002] At present, hot blast stoves are widely used as heat sources in agricultural product baking rooms such as for tobacco leaves and vegetables. Its working principle is: fuel is transported to the furnace of the hot blast stove through a feeding device for combustion, the flame heats the air in the heat exchanger to generate hot air, and the hot air is transported to the baking room to provide heat for the baking work. When the hot blast stove is in use, a ventilation duct needs to be set up to discharge the heat-exchanged air. Since the air flows relatively fast in the ventilation duct and rubs against the inner wall of the ventilation duct, noise is easily generated. In order to reduce noise pollution, sound-absorbing cotton is usually set in the ventilation duct at present to reduce noise. Since the air in the ventilation duct contains soot, it will pollute the sound-absorbing cotton, resulting in a reduced service life of the sound-absorbing cotton. And setting the sound-absorbing cotton in the ventilation duct is very inconvenient both in installation and replacement. Content of the Utility Model

[0003] In order to solve the above technical problems, the utility model is solved by the following technical solutions:

[0004] A sound-absorbing ventilation duct for a hot blast stove, which includes a duct body. A sound-absorbing cotton installation groove is provided on the outer side wall of the duct body along its circumferential direction. Sound-absorbing cotton is provided in the sound-absorbing cotton installation groove. An installation step is further provided on the outer side wall of the duct body, and a sealing plate for sealing the sound-absorbing cotton installation groove is provided at the installation step.

[0005] As a preferred scheme of the utility model, a connection head communicating with the sound-absorbing cotton installation groove is provided at the sealing plate, and a sealing cover for sealing the connection head is provided at the connection head.

[0006] As a preferred scheme of the utility model, a sealing strip installation groove is provided at the installation step, and a rubber sealing strip is provided in the sealing strip installation groove.

[0007] As a preferred scheme of the utility model, one side of the sealing plate is hinged to the outer side wall of the duct body through a hinge. A fixing screw hole is provided at the end of the duct body far from the hinge, a fixing bolt is provided in the fixing screw hole, and a fixing rod for fixing the end of the sealing plate is rotatably provided at the fixing bolt.

[0008] As a preferred scheme of the utility model, connection components are provided at both ends of the duct body. The connection component includes two groups of connection blocks, the two groups of connection blocks are arranged oppositely, and a connection block through hole is provided in the connection block; the connection component further includes two groups of grooves, the two groups of grooves are in clearance fit with the connection block, and a groove screw hole with the same aperture as the connection block through hole is provided at the bottom end surface of the groove.

[0009] The utility model adopts the above technical solutions, and the beneficial effects that can be achieved are as follows:

[0010] Through the sound-absorbing cotton and the sealed cavity formed by the sealing plate and the sound-absorbing cotton installation groove, the utility model can preferably reduce the noise caused by the air flowing in the pipeline body. Thus, the interference of the noise to people's production and life is avoided, and compared with the way of directly installing the sound-absorbing cotton on the pipeline body, the utility model is more convenient in installing and replacing the sound-absorbing cotton. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic structural diagram of the sound-absorbing ventilation pipeline for the hot blast stove in Embodiment 1.

[0012] Figure 2 It is Figure 1 the sectional view of the sound-absorbing ventilation pipeline for the hot blast stove in

[0013] Figure 3 It is Figure 2 the enlarged view of part A in DETAILED DESCRIPTION OF THE EMBODIMENTS

[0014] To further understand the content of the utility model, the utility model will be described in detail with reference to the drawings and embodiments. It should be understood that the embodiments are only for explaining the utility model rather than limiting it.

[0015] Embodiment 1

[0016] As Figures 1-3 shown, this embodiment provides a sound-absorbing ventilation pipeline for a hot blast stove, which includes a pipeline body 110. A sound-absorbing cotton installation groove 310 is arranged on the outer side wall of the pipeline body 110 along its circumferential direction. A sound-absorbing cotton 320 is arranged in the sound-absorbing cotton installation groove 310. An installation step 330 is further arranged on the outer side wall of the pipeline body 110. A sealing plate 120 for sealing the sound-absorbing cotton installation groove 310 is arranged at the installation step 330. One side of the sealing plate 120 is hinged to the outer side wall of the pipeline body 110 through a hinge 140. A fixing screw hole 150 is arranged at the end of the pipeline body 110 far from the hinge 140. A fixing bolt 160 is arranged in the fixing screw hole 150. A fixing rod 170 for fixing the end of the sealing plate 120 is rotatably arranged at the fixing bolt 160.

[0017] During installation, the sealing plate 120 is opened, and then the sound-absorbing cotton 320 is placed in the sound-absorbing cotton installation groove 310, and then the sealing plate 120 is closed. During use, through the sound-absorbing cotton 320 and the sealed cavity formed by the sealing plate 120 and the sound-absorbing cotton installation groove 310, the noise caused by the air flowing in the pipeline body 110 can be preferably reduced. When the sound-absorbing cotton 320 needs to be replaced, the sealing plate 120 is opened to replace the sound-absorbing cotton.

[0018] In this embodiment, the sound-absorbing cotton 320 and the sealing cavity formed by the sealing plate 120 and the sound-absorbing cotton installation groove 310 can preferably reduce the noise generated when air flows in the pipe body 110. Thus, the interference caused by noise to people's production and life is avoided, and the sound-absorbing ventilation pipe for the hot blast stove in this embodiment is more convenient to install and replace the sound-absorbing cotton 320 compared with the method of directly installing the sound-absorbing cotton 320 on the pipe body 110.

[0019] Among them, through the arrangement of the fixing bolts 160 and the fixing rods 170, the sealing plate 120 can be fixed.

[0020] In order to further improve the sound insulation effect of the sound-absorbing ventilation pipe for the hot blast stove, a connector 210 communicating with the sound-absorbing cotton installation groove 310 is provided at the sealing plate 120, and a sealing cover 130 for sealing the connector 210 is provided at the connector 210. A sealing strip installation groove 340 is provided at the installation step 330, and a rubber sealing strip 350 is provided in the sealing strip installation groove 340.

[0021] During use, the air in the sound-absorbing cotton installation groove 310 can be pumped out by connecting a suction pump to the connector 210, so as to further improve the noise reduction effect on the noise in the pipe body 110. Through the arrangement of the sealing strip 350, the sealing performance between the sealing plate 120 and the sound-absorbing cotton installation groove 310 can be preferably improved, thereby preventing air from entering the sound-absorbing cotton installation groove 310, and thus preferably improving the stability of the sound-absorbing ventilation pipe for the hot blast stove during use.

[0022] In this embodiment, connection components are provided at both ends of the pipe body 110. The connection components include two sets of connection blocks 180, the two sets of connection blocks 180 are arranged oppositely, and connection block through holes 190 are provided in the connection blocks 180; the connection components further include two sets of grooves 1100, the two sets of grooves 1100 are in clearance fit with the connection blocks 180, and groove screw holes 1110 with the same aperture as the connection block through holes 190 are provided at the bottom end surfaces of the grooves 1100.

[0023] In this embodiment, through the arrangement of the connection components, when connecting two pipe fittings bodies 110, the connection block at one pipe fitting body 110 is inserted into the groove 1100 at the other pipe fitting body 110, and then the two pipe fittings bodies 110 can be connected by screwing bolts into the groove screw holes 1110, so that the connection of the pipe fittings bodies 110 can be realized more conveniently.

[0024] The specific working principle of the sound-absorbing ventilation pipe for the hot blast stove in this embodiment is as follows:

[0025] During installation, first open the sealing plate 120, then place the sound-absorbing cotton 320 in the sound-absorbing cotton installation groove 310, and then close the sealing plate 120; afterwards, unscrew the sealing cover 130, connect it with the air pump through the connector 210 and extract the air in the sound-absorbing cotton installation groove 310, and then cover the sealing cover 130. When it is necessary to replace the sound-absorbing cotton 320, open the sealing cover 130, then loosen the fixing bolt 160 and rotate the fixing rod 170 to open the sealing plate 120 to replace the sound-absorbing cotton 320.

[0026] In summary, the above are only the preferred embodiments of the present invention, and all equivalent changes and modifications made according to the scope of the patent application of the present invention shall fall within the scope of the patent of the present invention.

Claims

1. A sound-absorbing ventilation duct for a hot blast stove, characterized in that: The invention comprises a pipe body (110), wherein a sound-absorbing cotton installation groove (310) is arranged along the circumference of the pipe body (110) on the outer side wall thereof, sound-absorbing cotton (320) is arranged in the sound-absorbing cotton installation groove (310), and a mounting step (330) is also arranged on the outer side wall of the pipe body (110), and a sealing plate (120) for sealing the sound-absorbing cotton installation groove (310) is arranged at the mounting step (330).

2. A sound-absorbing ventilation duct for a hot blast stove according to claim 1, characterized in that: A connector (210) communicating with the sound-absorbing cotton installation groove (310) is provided at the sealing plate (120), and a sealing cover (130) used for sealing the connector (210) is provided at the connector (210).

3. A sound-absorbing ventilation duct for a hot blast stove according to claim 2, characterized in that: A sealing strip installation groove (340) is provided at the installation step (330), and a rubber sealing strip (350) is provided in the sealing strip installation groove (340).

4. The sound-absorbing ventilation duct for a hot blast stove according to claim 1, characterized in that: One side of the sealing plate (120) is hinged to the outer wall of the pipe body (110) through a hinge (140); an end of the pipe body (110) away from the hinge (140) is provided with a fixing screw hole (150); a fixing bolt (160) is provided in the fixing screw hole (150); and a fixing rod (170) for fixing the end of the sealing plate (120) is rotatably provided at the fixing bolt (160).

5. The sound-absorbing ventilation duct for a hot blast stove according to claim 1, characterized in that: Both ends of the pipe body (110) are provided with connection components, the connection components comprising two groups of connection blocks (180), the two groups of connection blocks (180) are arranged opposite to each other, and the connection blocks (180) are provided with connection block through holes (190); the connection components also comprise two groups of grooves (1100), the two groups of grooves (1100) are clearance-matched with the connection blocks (180), and the bottom end surfaces of the grooves (1100) are provided with groove screw holes (1110) having the same aperture as the connection block through holes (190).

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