Silencing device of pneumatic jumbolter

Abstract

The utility model discloses a pneumatic jumbolter silencer which comprises a shell, a baffling channel and a throttling baffle. An air inlet and an exhaust port are formed in the shell, a baffling channel is arranged between the air inlet and the exhaust port, a plurality of throttling baffles are fixed in the baffling channel, and sound absorption materials are fixed on the throttling baffles; and the exhaust port is covered with a metal sound insulation net. The device has the advantages that when the pneumatic jumbolter works, compressed air enters the device from the air inlet and is sequentially baffled through the bottom channel and the side wall channel, the speed of the compressed air is reduced, and when the compressed air passes through the throttling baffle in the side wall channel, the airflow speed is reduced, and noise is reduced; when air flow passes through the sound absorbing material on the throttling baffle and the metal sound insulation net outside the exhaust port, noise is further absorbed and blocked and is finally exhausted from the exhaust hole, and the noise of the exhausted air is greatly reduced at the moment.

Description

Technical Field

[0001] This utility model relates to the technical field of auxiliary equipment for anchor drilling rigs, and in particular to a pneumatic anchor drilling rig noise reduction device. Background Technology

[0002] Pneumatic anchor drilling rigs are widely used in mining, tunnel construction and other engineering operations; however, existing pneumatic anchor drilling rigs generate a lot of noise when working, which not only damages the hearing of the workers, but also causes noise pollution to the surrounding environment.

[0003] Currently, some noise reduction devices on the market are either complex in structure and inconvenient to install, failing to meet actual engineering needs, or have poor sealing and ineffective noise reduction, still producing sharp and piercing noise far exceeding the acceptable range for the human body. Workers who are in such an environment for a long time are at risk of developing noise-induced hearing loss.

[0004] Therefore, developing an efficient and convenient pneumatic anchor drilling rig noise reduction device is of great practical significance. Utility Model Content

[0005] The purpose of this utility model is to provide a pneumatic anchor drilling rig noise reduction device with reliable noise reduction effect and good sealing performance.

[0006] This utility model is implemented by the following technical solution: a pneumatic anchor drilling rig noise reduction device, characterized in that it includes a shell, a baffle channel, and a throttling baffle; the shell is provided with an air inlet and an exhaust outlet, the baffle channel is provided between the air inlet and the exhaust outlet, a plurality of throttling baffles are fixed in the baffle channel, and sound-absorbing material is fixed on the throttling baffles; a metal sound insulation mesh is provided on the exhaust outlet.

[0007] Furthermore, the outer shell is a hollow shell structure in the shape of a "U", and the air inlet is opened on the inner bottom surface of the outer shell.

[0008] Furthermore, the outer bottom surface of the outer shell has an installation port opposite to the air inlet, and the end of the air duct of the anchor drilling machine passes through the air inlet and is screwed with a lock nut.

[0009] Furthermore, a sealing gasket is fitted at the air inlet.

[0010] Furthermore, the mounting port is covered with a rubber pad, and the rubber pad is covered with a movable cover plate, which is fixedly connected to the outer shell by screws.

[0011] Furthermore, a pad is fixed to the surface of the movable cover plate and pressed against the rubber pad.

[0012] Furthermore, several partitions are fixed inside both sides of the outer casing, and a side wall channel is formed between each two adjacent partitions. Each side wall channel is connected to the air inlet through a bottom channel.

[0013] Furthermore, a U-shaped enclosure and a U-shaped enclosure with opposite openings are fixed inside the bottom of the outer shell. The U-shaped enclosure covers the air inlet, and the U-shaped enclosure covers the U-shaped enclosure. Baffles are fixed on both sides of the U-shaped enclosure, and a connecting plate is fixed between the baffles and the closed end of the U-shaped enclosure.

[0014] Furthermore, a baffle plate is vertically fixed to the closed end of the U-shaped enclosure, and the bottom channel is formed by the U-shaped enclosure, the U-shaped enclosure, the connecting plate, the baffle plate and the baffle plate.

[0015] Furthermore, exhaust ports are provided on both outer walls of the outer casing and communicate with the corresponding side wall channels. Exhaust baffles are fixed on both outer walls of the outer casing and fit onto the exhaust ports. Exhaust holes corresponding to the exhaust ports are provided on the exhaust baffles. The metal sound insulation mesh is inserted between the exhaust baffles and the exhaust ports.

[0016] The advantages of this invention are as follows: When the pneumatic anchor drilling rig is working, compressed air enters the device from the air inlet. As it flows through the bottom channel and the side wall channel, its speed is reduced. When it passes through the throttling baffle in the side wall channel, the airflow speed is reduced, thus reducing noise generation. When the airflow passes through the sound-absorbing material on the throttling baffle and the metal sound insulation mesh outside the exhaust port, the noise is further absorbed and blocked. Finally, it is discharged from the exhaust hole. At this time, the noise of the discharged gas has been greatly reduced. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 for Figure 1 AA sectional view.

[0020] Figure 3 for Figure 1 BB cross-sectional view.

[0021] Figure 4 for Figure 1CC section view.

[0022] Figure 5 This is a schematic diagram of the internal baffle channel of the outer shell of the present invention.

[0023] The components in the attached diagram are labeled as follows: outer casing 1, air inlet 1.1, exhaust outlet 1.2, mounting port 1.3, baffle channel 2, throttling baffle 3, sound-absorbing material 4, metal sound insulation mesh 5, duct 6, lock nut 7, sealing gasket 8, copper flat gasket 9, rubber gasket 10, cover plate 11, pad 12, partition 13, bottom channel 14, U-shaped enclosure 15, U-shaped enclosure 16, baffle plate 17, connecting plate 18, baffle plate 19, exhaust baffle 20, side wall channel 21. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "front", "rear", "top", "bottom", "left", "right", "vertical", "horizontal", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] like Figures 1 to 5 As shown, this embodiment provides a pneumatic anchor drilling rig silencing device, which includes a shell 1, a baffle channel 2, and a throttling baffle 3. The shell 1 is a hollow shell structure in the shape of a "U", which is spliced ​​and welded from lightweight iron plates with a thickness of 2mm. The air inlet 1.1 is opened on the inner bottom surface of the shell 1. In this embodiment, there are two air inlets 1.1 for connecting the air outlet of the pneumatic anchor drilling rig. The outer bottom surface of the shell 1 has an installation port 1.3 opposite to the air inlet 1.1. The end of the air pipe 6 of the anchor drilling rig passes through the air inlet 1.1 and is screwed with a lock nut 7. The installation port 1.3 makes it easy for the operator to reach into the lock nut 7 and screw it onto the end of the air pipe 6 of the anchor drilling rig placed inside the shell 1.

[0027] The outer edge of the air inlet 1.1 is fitted with a sealing gasket 8 that is sleeved on the air duct 6 of the anchor drilling machine. A copper flat gasket 9 that is sleeved on the air duct 6 is pressed onto the sealing gasket 8, and the step of the air duct 6 abuts against the copper flat gasket 9. The sealing gasket 8 is pressed tightly against the outer edge of the air inlet 1.1 by the lock nut 7, which plays a good sealing role and prevents air leakage.

[0028] The mounting port 1.3 is covered with a rubber pad 10, and the rubber pad 10 is covered with a movable cover plate 11. The movable cover plate 11 is fixedly connected to the outer shell 1 by screws. A pad 12 is welded and fixed on the surface of the movable cover plate 11, which is pressed against the rubber pad 10. While the screws fix the movable cover plate 11 to the outer shell 1, the pad 12 presses the rubber pad 10 tightly and seals it on the mounting port 1.3, so as to achieve a firm connection and good sealing effect. The movable cover plate 11 can be opened and closed easily.

[0029] An exhaust port 1.2 is provided on the outer side wall of the outer casing 1. A baffle channel 2 is provided between the air inlet 1.1 and the exhaust port 1.2. The baffle channel 2 includes a bottom channel 14 and a side wall channel 21 that are interconnected.

[0030] The bottom of the outer casing 1 is fixed with a U-shaped enclosure 15 and a U-shaped enclosure 16 with opposite openings. The U-shaped enclosure 15 covers the air inlet 1.1, and the U-shaped enclosure 16 covers the open end of the U-shaped enclosure 15. Baffles 17 are fixed on both sides of the U-shaped enclosure 16, and a connecting plate 18 is fixed between the baffles 17 and the closed end of the U-shaped enclosure 15. A baffle plate 19 is vertically fixed to the closed end of the U-shaped enclosure 16. The bottom channel 14 consists of the U-shaped enclosure 15, the U-shaped enclosure 16, and the connecting plate 18. The enclosure is formed by baffle 17 and baffle 19. The airflow enters the U-shaped enclosure 15 from the air inlet 1.1, and flows through the opening end of the U-shaped enclosure 15 to both sides of the U-shaped enclosure 16. The two airflows flow through the channel between the side wall of the U-shaped enclosure 15 and the side wall of the U-shaped enclosure 16, respectively, and flow along the connecting plate 18 to the channel between the side wall of the U-shaped enclosure 16 and the baffle 17. Under the blockage of the baffle 19, the two airflows enter the corresponding side wall channels 21 on both sides of the outer shell 1.

[0031] Several partitions 13 are fixed on the inner edges of both sides of the outer casing 1 perpendicular to the bottom of the outer casing 1. A side wall channel 21 is formed between each two adjacent partitions 13. Each side wall channel 21 is connected to the air inlet 1.1 through the bottom channel 14. A gap is left between each partition 13 and the top inner side of the outer casing 1 to ensure communication with the bottom channel 14.

[0032] Several throttling baffles 3 are staggered and fixed along the length of the partition 13 in each side wall channel 21. Sound-absorbing material 4 is fixed on the throttling baffles 3. The sound-absorbing material 4 can be any of the existing fabric sound insulation board, mineral wool sound absorption board or porous sound-absorbing material. In this embodiment, it is glass wool, which has a porous and soft structure and contains a large number of tiny pores inside, which can effectively absorb sound waves, thereby reducing sound reflection and echo to achieve noise reduction. The staggered throttling baffles 3 can change the airflow direction and speed, so that the high-pressure gas is buffered and collided to reduce airflow noise.

[0033] The outer walls of the outer casing 1 are provided with exhaust ports 1.2 that communicate with the corresponding side wall channels 21. Exhaust baffles 20 are fixed to the outer walls of the outer casing 1 and attached to the exhaust ports 1.2. Exhaust baffles 20 are provided with exhaust holes corresponding to the exhaust ports 1.2. Metal sound insulation mesh 5 is inserted between the exhaust baffles 20 and the exhaust ports 1.2 and covers the exhaust ports 1.2. After the airflow passes through the side wall channels 21, it passes through the metal sound insulation mesh 5 through the exhaust ports 1.2 and is discharged from the exhaust holes. The metal sound insulation mesh 5 has the function of buffering airflow and reducing noise, further reducing airflow noise. Thus, this utility model can achieve a good sound insulation effect.

[0034] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pneumatic anchor drilling rig noise reduction device, characterized in that, It includes a housing, a baffle channel, and a throttle baffle; An air inlet and an exhaust outlet are provided on the housing. The baffle channel is provided between the air inlet and the exhaust outlet. A plurality of the throttle baffles are fixed in the baffle channel, and a sound-absorbing material is fixed on the throttle baffle; A metal sound insulation net is covered on the exhaust outlet.

2. The pneumatic anchor drilling rig noise reduction device according to claim 1, characterized in that, The housing is a "U-shaped" hollow shell structure, and the air inlet is opened on the inner bottom surface of the housing.

3. The pneumatic anchor drilling rig noise reduction device according to claim 2, characterized in that, An installation opening opposite to the air inlet is opened on the outer bottom surface of the housing. The end of the air duct of the rock bolt drill penetrates into the air inlet and is screwed with a lock nut.

4. The pneumatic anchor drilling rig noise reduction device according to claim 3, characterized in that, A sealing gasket is fitted at the air inlet.

5. A pneumatic anchor drilling rig noise reduction device according to claim 3, characterized in that, A rubber gasket is covered on the installation opening, and a movable cover plate is covered on the rubber gasket. The movable cover plate is fixedly connected to the housing by screws.

6. The pneumatic anchor drilling rig noise reduction device according to claim 5, characterized in that, A pad iron that fits and presses on the rubber gasket is fixed on the plate surface of the movable cover plate.

7. A pneumatic anchor drilling rig noise reduction device according to any one of claims 2 to 6, characterized in that, A plurality of partition plates are fixed inside both sides of the housing. A side wall channel is formed between every two adjacent partition plates. Each side wall channel is communicated with the air inlet through a bottom channel.

8. A pneumatic anchor drilling rig noise reduction device according to claim 7, characterized in that, A U-shaped enclosure and a U-shaped enclosure with opposite openings are fixed inside the bottom of the housing. The U-shaped enclosure covers the air inlet, and the U-shaped enclosure covers the U-shaped enclosure; Baffle plates are fixed on both sides of the U-shaped enclosure, and a connecting plate is fixed between the baffle plates and the closed end of the U-shaped enclosure.

9. A pneumatic anchor drilling rig noise reduction device according to claim 8, characterized in that, A flow partition plate is vertically fixed at the closed end of the U-shaped enclosure. The bottom channel is surrounded by the U-shaped enclosure, the U-shaped enclosure, the connecting plate, the baffle plate, and the flow partition plate.

10. A pneumatic anchor drilling rig noise reduction device according to claim 7, characterized in that, The exhaust outlets communicated with the corresponding side wall channels are opened on the outer walls of both sides of the housing. Exhaust baffle plates that fit on the exhaust outlets are fixed on the outer walls of both sides of the housing. Exhaust holes corresponding to the exhaust outlets are opened on the exhaust baffle plates. The metal sound insulation net is inserted between the exhaust baffle plate and the exhaust outlet.

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