CN212028876U

CN212028876U - Compressed air silencer

Info

Publication number: CN212028876U
Application number: CN202020086757.8U
Authority: CN
Inventors: 沈立华; 刘素昭
Original assignee: Hunan Xieyouyi Machinery Industry Co ltd
Current assignee: Hunan Xieyouyi Machinery Industry Co ltd
Priority date: 2020-01-15
Filing date: 2020-01-15
Publication date: 2020-11-27
Anticipated expiration: 2030-01-15

Abstract

The utility model discloses a compressed air muffler, include: first barrel, connection structure, baffle and fastening structure. One end of the first cylinder is closed, and a first silencing hole is formed in the peripheral wall of the first cylinder; the connecting structure connects the other end of the first cylinder with the exhaust pipe in a sealing way; the baffle slope sets up in the barrel, the baffle middle part is provided with the air vent. The fastening structure is arranged at one end of the first cylinder body, which is provided with a connecting structure, and comprises an extension rod and a fastening bolt which is arranged at the end part of the extension rod and can move and fix along the radial direction of the first cylinder body. Carry out the air current reposition of redundant personnel through the baffle, the noise that sends when the minimize exhausts to improve noise cancelling effect, send the noise when avoiding compressed air to discharge, and strengthened the connection through fastening structure, effectively prevent the muffler because of assaulting the problem that drops.

Description

Compressed air silencer

Technical Field

The utility model relates to a muffler technical field especially relates to a compressed air muffler.

Background

At present, the compressed air silencer is mainly used for silencing equipment of boiler steam emission in the electric power industry, the petrochemical industry, the metallurgy industry, the mine industry, the textile industry and the like. The noise that mainly used restraines the high pressure draught and produce when discharging, the hole of silencing is arranged on mainly through the thin metal tube to current compressed air muffler for quick exhaust air when carminative vibration muffler offsets each other, such noise cancelling effect structure is single, and the noise when noise cancelling effect is relatively poor, reduction compressed air that can not be fine discharges.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a compressed air muffler can reduce the noise that compressed air sent when the release.

According to the utility model discloses a compressed air muffler of first aspect embodiment, include: first barrel, connection structure, baffle and fastening structure. One end of the first cylinder is closed, and a first silencing hole is formed in the peripheral wall of the first cylinder; the connecting structure connects the other end of the first cylinder with the exhaust pipe in a sealing way; the baffle, the slope sets up in the barrel, the baffle middle part is provided with the air vent. The fastening structure is arranged at one end of the first cylinder body, which is provided with a connecting structure, and comprises an extension rod and a fastening bolt which is arranged at the end part of the extension rod and can move and fix along the radial direction of the first cylinder body.

According to the utility model discloses compressed air muffler has following beneficial effect at least: the baffle plate is used for shunting the air flow, so that the noise generated during exhaust is reduced as much as possible, the noise reduction effect is improved, and the noise generated during the discharge of compressed air is avoided.

According to some embodiments of the utility model, first barrel is equipped with the second barrel outward, be provided with the second hole of eliminating noise on the second barrel.

According to some embodiments of the utility model, the second barrel overcoat is equipped with the third barrel, be provided with the third hole of eliminating noise on the third barrel perisporium.

According to some embodiments of the utility model, be provided with sound absorbing material between third barrel and the second barrel.

According to some embodiments of the utility model, the baffle is provided with the polylith, and two adjacent baffles slope opposite direction.

According to some embodiments of the invention, the second muffling aperture is larger than the first muffling aperture.

According to some embodiments of the utility model, connection structure extends to be provided with a screw thread section of thick bamboo dorsad first barrel, screw thread section of thick bamboo outer wall is provided with connecting thread.

According to some embodiments of the present invention, a fastening nut is further provided between the connection structure and the first cylinder.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is a front view of an embodiment of the present invention;

fig. 3 is a cross-sectional view taken at a-a in fig. 2.

First cylinder-100 first muffling holes-110 baffle-120 vent-121

Connection structure-200 thread cylinder-210 fastening nut-220

Second cylinder 300 second silencing hole 310

Third cylinder-400 third sound-absorbing hole-410

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

Referring to fig. 1 to 3, an embodiment of the present invention is a compressed air muffler including a first cylinder 100, a connection structure 200, a partition 120, and a fastening structure 500. The first cylinder 100 is closed at one end and provided with a first muffling hole 110 on the circumferential wall; the connecting structure 200 connects the other end of the first cylinder 100 with the scheduling pipe in a sealing way; the baffle 120 is obliquely arranged in the cylinder, the middle part of the baffle 120 is provided with a vent hole 121, the fastening structure 500 is arranged at one end of the first cylinder 100 with the connecting structure 200, and the fastening structure 500 comprises an extension rod 510 and a fastening bolt 520 which is arranged at the end part of the extension rod 510 and can move and fix along the radial direction of the first cylinder 100.

For example, referring to fig. 3, the partition 120 is obliquely disposed in the first cylinder 100, which can achieve a shunting effect, so that a part of the airflow is blocked by the partition 120 and then discharged from the nearby first muffling hole 110, thereby reducing the speed and pressure of the airflow. Under the condition of no partition plate 120, the high-pressure airflow can directly impact the outer side, the exhaust effect of the first muffling hole closer to the air outlet is poor, and the first muffling hole cannot be fully utilized for muffling and exhausting. The connection structure 200 tightly connects the first cylinder 100 with the exhaust pipe, preventing noise from being generated when compressed air leaks from the gap. The inclined disposition of the partition 120 enables a portion of the compressed air, which is not able to pass, to change direction. The compressed air is prevented from directly striking the partition 120 and the vent hole 121 allows the compressed air to be partially discharged in the original direction. The fastening structure 500 can enhance the connection of the connection structure 200 by way of the fastening bolts 520 pressing against each other.

According to some embodiments of the present invention, the second cylinder 300 is sleeved outside the first cylinder 100, and the second cylinder 300 is provided with the second muffling hole 319. For example, referring to fig. 3, the airflow diffused through the first muffling hole still has a high velocity and pressure, and the direct discharge still generates a certain noise, so that the second sleeve is sleeved outside the first sleeve 100, and the second muffling hole 319 is further formed on the second sleeve, thereby further reducing the pressure and velocity of the airflow. Specifically, the first muffling hole 110 and the second muffling hole 319 are staggered from each other, so that the flow velocity of the air flow is reduced.

According to some embodiments of the present invention, the third cylinder 400 is installed outside the second cylinder 300, and the third muffling hole 410 is provided on the peripheral wall of the third cylinder 400, for example, referring to fig. 3, the airflow diffused through the second muffling hole still has higher speed and pressure, and still generates a certain noise due to direct discharge, so that the third sleeve is installed outside the second cylinder 300, and the third muffling hole is further provided on the third sleeve, thereby further reducing the pressure and speed of the airflow. Specifically, the second muffling hole 319 and the third muffling hole are staggered with each other to slow down the flow velocity of the air flow.

According to some embodiments of the present invention, a sound absorbing material is disposed between the third cylinder 400 and the second cylinder 300. For example, referring to fig. 3, the compressed air may also rub against the edges of the first and second muffling holes 110 and 319 during the releasing process to generate noise, and in order to sufficiently reduce the noise, the second cylinder 300 is usually coated with a sound-deadening material through which air can flow. Specifically, the second cylinder 300 is externally coated with the third cylinder 400, and the sound-deadening material is filled in a chamber formed by the second cylinder 300 and the third cylinder 400. The sound-deadening material is required to have a certain ventilation performance, and may be generally made of a sound-absorbing sponge or the like, and one surface facing the first cylinder 100 is generally provided with an uneven structure to absorb sound waves.

According to some embodiments of the present invention, the partition plates 120 are provided with a plurality of blocks, and the inclination directions of two adjacent partition plates 120 are opposite. For example, referring to fig. 3, the adjacent partition plates 120 are inclined in opposite directions, so that noise is mainly prevented from being generated due to resonance of the air flows between the partition plates 120 in the same flow direction, and the air flows need to be disturbed to prevent resonance of the air flows.

According to some embodiments of the present invention, the second muffling hole 319 is larger than the first muffling hole 110, for example, referring to fig. 3, in order to make the gas exhaust faster, the air flow diffused through the first muffling hole 110 is further diffused through the larger second muffling hole 319, and the larger muffling hole can effectively disperse and reduce the pressure of the air flow, exhausting the air flow faster while avoiding the noise.

According to some embodiments of the present invention, the connection structure 200 is provided with the screw thread cylinder 210 facing away from the first cylinder 100, and the outer wall of the screw thread cylinder 210 is provided with the connection screw thread, for example, referring to fig. 1 and 2, a tight sealing connection is required between the silencer and the exhaust pipe, which prevents the air flow from escaping from the joint and prevents the silencing cylinder from falling off from the exhaust hole. For this reason, the connection between the silencer and the exhaust hole is usually realized by a threaded connection, that is, the outer wall of the threaded cylinder 210 is provided with a connecting thread, and the inside of the exhaust hole is provided with an internal thread, so that the silencer and the exhaust hole are tightly connected by the threaded cylinder 210 selecting the exhaust hole.

According to some embodiments of the present invention, a fastening nut 220 is further disposed between the connecting structure 200 and the first barrel 100. For example, referring to fig. 1 and 2, it is generally necessary to screw the muffler to the exhaust hole due to the tight connection between the muffler and the exhaust hole. Since the muffler is easily damaged by hand tightening, a fastening nut 220 is usually provided between the connection structure 200 and the first cylinder 100, and the muffler is easily disassembled by assisting the tightening operation with a tool such as a wrench.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the gist of the present invention within the knowledge range of those skilled in the art.

Claims

1. A compressed air silencer adapted to be mounted on a compressed air discharge pipe for reducing noise, comprising:

a first cylinder (100) having one closed end and a first muffling hole (110) formed in the circumferential wall thereof;

the connecting structure (200) is used for hermetically connecting the other end of the first cylinder (100) with the exhaust pipe;

a baffle plate (120) obliquely arranged in the first cylinder (100), wherein the middle part of the baffle plate is provided with a vent hole (121)

The fastening structure (500) is arranged at one end, provided with the connecting structure (200), of the first cylinder (100), and the fastening structure (500) comprises an extension rod (510) and a fastening bolt (520) which is arranged at the end part of the extension rod (510) and can move and be fixed along the radial direction of the first cylinder (100).

2. The compressed air silencer of claim 1, wherein: the first cylinder body (100) is sleeved with a second cylinder body (300), and a second silencing hole (310) is formed in the second cylinder body (300).

3. The compressed air silencer of claim 2, wherein: the second cylinder (300) is sleeved with a third cylinder (400), and a third sound-deadening hole (410) is formed in the peripheral wall of the third cylinder (400).

4. The compressed air silencer of claim 3, wherein: and a sound absorption material is arranged between the third cylinder (400) and the second cylinder (300).

5. The compressed air silencer of claim 2, wherein: the partition plates (120) are provided with a plurality of blocks, and the inclination directions of two adjacent partition plates (120) are opposite.

6. The compressed air silencer of claim 2, wherein: the second muffling aperture (310) is larger than the first muffling aperture (110).

7. The compressed air silencer of claim 1, wherein: the connecting structure (200) comprises a threaded cylinder (210) extending back to the first cylinder (100), and connecting threads are arranged on the outer wall of the threaded cylinder (210).

8. The compressed air silencer of claim 1, wherein: the connection structure (200) further comprises a fastening nut (220) disposed between the threaded cylinder (210) and the first cylinder (100).