CN-224228744-U - Pneumatic jumbolter silencing device

CN224228744UCN 224228744 UCN224228744 UCN 224228744UCN-224228744-U

Abstract

The utility model discloses a pneumatic jumbolter silencing device which comprises a shell, a baffling channel and throttling baffles, wherein an air inlet and an air outlet are formed in the shell, the baffling channel is arranged between the air inlet and the air outlet, a plurality of throttling baffles are fixed in the baffling channel, sound-absorbing materials are fixed on the throttling baffles, and a metal sound-insulating net is covered on the air outlet. The pneumatic roof bolter has the advantages that when the pneumatic roof bolter works, compressed air enters the device from the air inlet, is deflected through the bottom channel and the side wall channel in sequence, reduces the speed of the compressed air, reduces the air flow speed and reduces noise when the compressed air passes through the throttling baffle in the side wall channel, when the air passes through the sound absorbing material on the throttling baffle and the metal sound insulation net outside the air outlet, the noise is further absorbed and blocked, and finally the compressed air is discharged from the air outlet, and the discharged air noise is greatly reduced.

Inventors

YU FENGQI
CHEN AIXI
LIU QINGBIN
ZHANG YUNHAI
ZHANG ZHENGUO
ZHAO JUNYI
ZHANG MING
MENG ZHAOBO

Assignees

国电电力发展股份有限公司
国电建投内蒙古能源有限公司

Dates

Publication Date: 20260512
Application Date: 20250527

Claims (10)

1. The pneumatic jumbolter silencing device is characterized by comprising a shell, a baffling channel and a throttling baffle; The shell is provided with an air inlet and an air outlet, the baffling channel is arranged between the air inlet and the air outlet, a plurality of throttling baffles are fixed in the baffling channel, sound absorbing materials are fixed on the throttling baffles, and a metal sound insulation net is covered on the air outlet.
2. A pneumatic jumbolter silencing apparatus according to claim 1, wherein the housing is a "U" -shaped hollow shell structure, and the air inlet is formed in the inner bottom surface of the housing.
3. The pneumatic jumbolter silencing apparatus of claim 2, wherein the outer bottom surface of the housing is provided with a mounting opening opposite to the air inlet, and the air duct end of the jumbolter penetrates through the air inlet and is screwed with a locking nut.
4. A pneumatic jumbolter silencing apparatus as claimed in claim 3, wherein a gasket is attached to the air inlet.
5. A pneumatic jumbolter silencing apparatus according to claim 3, wherein the mounting opening is covered with a rubber pad, the rubber pad is covered with a removable cover, and the removable cover is fixedly connected with the housing by screws.
6. The silencing device of a pneumatic jumbolter of claim 5, wherein a sizing block which is pressed on the rubber cushion in a fitting way is fixed on the plate surface of the movable cover plate.
7. A pneumatic jumbolter silencing apparatus according to any one of claims 2 to 6, wherein a plurality of partition plates are fixed in both sides of the housing, a side wall passage is formed between each two adjacent partition plates, and each side wall passage is communicated with the air inlet through a bottom passage.
8. The silencer of the pneumatic jumbolter of claim 7, wherein a U-shaped enclosing baffle and a U-shaped enclosing baffle with opposite openings are fixed in the bottom of the shell, the U-shaped enclosing baffle cover is arranged on the air inlet, the U-shaped enclosing baffle cover is arranged on the U-shaped enclosing baffle, flow baffle plates are fixed on two sides of the U-shaped enclosing baffle, and a connecting plate is fixed between the flow baffle plates and the closed ends of the U-shaped enclosing baffle.
9. The pneumatic jumbolter silencing apparatus of claim 8, wherein the closed end of the U-shaped enclosure is vertically secured with a flow baffle, and the bottom channel is defined by the U-shaped enclosure, the connecting plate, the flow baffle and the flow baffle.
10. The pneumatic jumbolter silencing apparatus according to claim 7, wherein the outer walls of the two sides of the casing are provided with exhaust ports communicated with the corresponding side wall channels, the outer walls of the two sides of the casing are fixedly provided with exhaust baffles attached to the exhaust ports, the exhaust baffles are provided with exhaust holes corresponding to the exhaust ports, and the metal sound insulation net is inserted between the exhaust baffles and the exhaust ports.

Description

Pneumatic jumbolter silencing device Technical Field The utility model relates to the technical field of auxiliary equipment of jumbolter, in particular to a pneumatic jumbolter silencing device. Background However, the existing pneumatic jumbolter can generate larger noise when working, thereby not only damaging the hearing of operators, but also generating noise pollution to the surrounding environment. Some silencing devices in the current market are complex in structure and inconvenient to install, cannot meet actual engineering demands, are poor in sealing performance and poor in silencing effect, still generate sharp and harsher noise far exceeding the acceptable range of human bodies, work in such environments for a long time by operators, and risk of suffering noise deafness exists. Therefore, the development of the efficient and convenient pneumatic jumbolter silencing device has important practical significance. Disclosure of utility model The utility model aims to provide a pneumatic jumbolter silencing device which is reliable in silencing effect and good in sealing performance. The utility model is implemented by the following technical scheme that the pneumatic jumbolter silencing device is characterized by comprising a shell, a baffling channel and a throttling baffle, wherein an air inlet and an air outlet are formed in the shell, the baffling channel is arranged between the air inlet and the air outlet, a plurality of throttling baffles are fixed in the baffling channel, sound absorbing materials are fixed on the throttling baffle, and a metal sound insulation net is covered on the air outlet. Further, the shell is of a U-shaped hollow shell structure, and the air inlet is formed in the inner bottom surface of the shell. Further, an installation opening opposite to the air inlet is formed in the outer bottom surface of the shell, and the air pipe end part of the anchor rod drilling machine penetrates through the air inlet and is in threaded connection with a locking nut. Further, sealing gaskets are attached to the air inlet. Further, the upper cover of the mounting opening is provided with a rubber cushion, the upper cover of the rubber cushion is provided with a movable cover plate, and the movable cover plate is fixedly connected with the shell through screws. Further, a sizing block which is pressed on the rubber leather pad in a fitting way is fixed on the plate surface of the movable cover plate. Further, a plurality of partition boards are fixed in the two sides of the shell, a side wall channel is formed between every two adjacent partition boards, and each side wall channel is communicated with the air inlet through a bottom channel. Further, a U-shaped enclosing baffle and a U-shaped enclosing baffle with opposite openings are fixed in the bottom of the shell, the U-shaped enclosing baffle cover is arranged on the air inlet, the U-shaped enclosing baffle cover is arranged on the U-shaped enclosing baffle, flow baffle plates are fixed on two sides of the U-shaped enclosing baffle, and a connecting plate is fixed between the flow baffle plates and the closed ends of the U-shaped enclosing baffle. Further, the closed end of the U-shaped enclosing baffle is vertically fixed with a flow baffle, and the bottom channel is formed by enclosing the U-shaped enclosing baffle, the connecting plate, the flow baffle and the flow baffle. Further, the exhaust ports communicated with the corresponding side wall channels are formed in the outer walls of the two sides of the shell, the exhaust baffles attached to the exhaust ports are fixed on the outer walls of the two sides of the shell, exhaust holes corresponding to the exhaust ports are formed in the exhaust baffles, and the metal sound insulation net is inserted between the exhaust baffles and the exhaust ports. The utility model has the advantages that when the pneumatic jumbolter works, compressed air enters the device from the air inlet, is deflected through the bottom channel and the side wall channel in sequence, reduces the speed of the compressed air, reduces the air flow speed when the compressed air passes through the throttling baffle in the side wall channel, reduces noise generation, and further absorbs and blocks the noise when the air passes through the sound absorbing material on the throttling baffle and the metal sound insulation net outside the air outlet, and finally is discharged from the air outlet, so that the discharged air noise is greatly reduced. Drawings In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Fi