CN216969623U

CN216969623U - Exhaust silencer of relay valve

Info

Publication number: CN216969623U
Application number: CN202220417788.6U
Authority: CN
Inventors: 蔡世庆; 叶源春; 蔡世明
Original assignee: Quanzhou Xinlida Machinery Manufacturing Co ltd
Current assignee: Quanzhou Xinlida Machinery Manufacturing Co ltd
Priority date: 2022-02-28
Filing date: 2022-02-28
Publication date: 2022-07-15
Anticipated expiration: 2032-02-28

Abstract

The utility model provides an exhaust silencer of a relay valve, which comprises a shell and a speed reduction and noise reduction device, wherein the speed reduction and noise reduction device is arranged on the inner wall of the shell and is positioned at the air inlet end of the shell and used for reducing the flow rate of gas and reducing the noise generated by the gas in the shell, the speed reduction and noise reduction device is arranged on the inner wall of the shell and is positioned at the air inlet end of the shell, the speed reduction and noise reduction device is used for reducing the flow rate of the gas and reducing the noise generated by the gas in the shell when the gas passes through the air inlet end of the shell, and the inner part of the shell is not easy to damage and is beneficial to long-term use.

Description

Exhaust silencer of relay valve

Technical Field

The utility model relates to the technical field of relay valve exhaust silencers, in particular to a relay valve exhaust silencer.

Background

Silencers can be classified into resistive, resistive and resistive hybrid silencers according to their operating principles, and are differentiated according to the spectral characteristics of the noise source. The medium and high frequency components of the noise source are stronger, and a resistive silencer is preferably adopted under the condition that the frequency spectrum mechanism is changeable; under the conditions that the low-frequency component of the noise source is strong and has peak frequency, a resonant cavity type is preferably adopted; the noise spectrum with broadband property is preferably an impedance composite silencer.

The pneumatic braking system is mainly used for trucks and buses with the total mass larger than 8 t. The relay valve is an important component of a pneumatic brake system and is generally mounted in the air path from the air supply or master cylinder to the rear axle brake chamber. The relay valve can quickly release the braking action, and the compressed air in the brake air chamber is directly discharged into the atmosphere from the air outlet without passing through a master brake valve far away from the brake air chamber of the rear axle. However, the exhaust of the vehicle rear relay valve often gives out the airflow noise of 'gouge' harsh in releasing the brake, and the noise is more prominent in a wide band and a high frequency band.

The relay valve exhaust silencer disclosed in the Chinese patent No. CN201120142383.8 comprises a shell, wherein a partition plate I and a partition plate II are arranged in the shell, the upper area of the partition plate I is a first-stage expansion area of the relay valve exhaust silencer, and the area between the partition plate I and the partition plate II is a second-stage expansion area; the end part of the shell is provided with a rear end cover, a resistive silencing area is formed between the partition plate II and the rear end cover and comprises a resistive silencing area I and a resistive silencing area II, the silencing area I is positioned on the upper part of the resistive silencing area II, and a porous sound absorption material is arranged in the resistive silencing area II. The partition board I is of a flat plate structure, four layers of small round holes are uniformly distributed on the partition board I along the radial direction, the number of the small round holes distributed from the inner layer to the outer layer is at least 8, 16, 24 and 32 respectively, and the small round holes are uniformly distributed in the circumferential direction. The baffle II is circular, a downward vertical part is arranged at the center of the baffle II, and the upper surface of the baffle II is an inclined part inclined downwards from the center to the edge. An upper layer of small round holes and a lower layer of small round holes are uniformly distributed on the vertical part of the clapboard II along the circumferential direction, and the number of the small round holes on each layer along the circumferential direction is at least 6; 3 layers of small round holes are uniformly distributed on the inclined part of the partition plate II along the circumferential direction, and the number of the small round holes from the inner layer to the outer layer is at least 18, 26 and 30 respectively. The partition plate I and the partition plate II are clamped in the shell through the clamping grooves, and the rear end cover is connected with the shell through the clamping grooves. When the anti-explosion shell is applied, the rear end cover can be disassembled, and the resistive material is placed inside the shell. In addition, the upper part of the outer side of the shell is provided with a clip matched with the relay valve, so that the valve body is clamped with the air release port of the relay valve, and the valve body is fixed firmly and conveniently. And the porous sound absorption material in the resistive sound attenuation area II is a stainless steel wire ball bound by a nylon woven mesh. The rear end cover is provided with an air outlet for exhausting air.

The specific process is as follows: compressed air exhausted by the relay valve enters the relay valve exhaust silencer, is silenced through the internal round hole, is punched through multiple reflections and is silenced in a resistive mode, and is finally exhausted to the atmosphere through the air outlets of the rear end cover, so that the noise of airflow is greatly reduced.

The utility model adopts the silencing principle of through hole injection and resistance, wherein the flow is controlled by large hole expansion, thereby structurally ensuring the smooth exhaust of the relay valve. Firstly, gas passes through the through holes for multiple times to primarily absorb noise; then, the compressed gas wave enters the pores in the porous sound absorption material to excite the porous material molecules to vibrate. By combining the resistive silencing principle, sound energy is changed into heat energy in order to overcome frictional resistance and viscous force, so that an ideal silencing effect is achieved, and smooth removal of compressed air is ensured.

The utility model adopts two-stage expansion, gradually reduces the flow rate and pressure of exhaust gas, and utilizes the small round hole and the resistance to reduce noise to convert the noise generated by the exhaust of the relay valve to an inaudible noise area, thereby reducing the vibration of the shell of the silencer.

The utility model adopts the plastic part, has fashionable and beautiful appearance, compact size, convenient arrangement and simple manufacturing process.

Although the above patent can solve the corresponding technical problems, there still exist certain drawbacks:

the relay valve exhaust silencer cannot reduce the flow velocity of gas when the gas passes through the gas inlet end of the relay valve exhaust silencer, so that the noise generated in the relay valve exhaust silencer is reduced, the interior of the relay valve exhaust silencer is easy to damage, and the relay valve exhaust silencer is not beneficial to long-term use.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a relay valve exhaust silencer aiming at the defects and shortcomings of the prior art.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a relay valve exhaust muffler, includes the casing, still including set up in shells inner wall is located the inlet end department of casing is used for reducing the gas velocity of flow and alleviates the gaseous device of making an uproar that slows down that produces the noise in the casing.

The further improvement is that: the device of making an uproar falls in the speed reduction including set up in be located in the casing be used for reducing the gas flow rate for the first time of the inlet end department of casing and alleviate gaseous one-level speed reduction that produces the noise in the casing fall the board, set up in be located in the casing be used for reducing the gas flow rate for the second time under the board of making an uproar falls the board, connects the board of making an uproar falls in the second grade speed reduction that produces the noise in the casing with shells inner wall's several connecting plates, connection the board of making an uproar falls in the one-level speed reduction with the spliced pole of the board of making an uproar falls in the second grade speed reduction.

The further improvement is that: the area of the upper end face of the first-stage speed reducing and noise reducing plate is smaller than that of the upper end face of the second-stage speed reducing and noise reducing plate.

The further improvement is that: and the upper end surface of the primary speed reducing and noise reducing plate is provided with a shock reducing device which reduces the impact force on the primary speed reducing and noise reducing plate when gas impacts the upper end surface of the primary speed reducing and noise reducing plate.

The further improvement is that: the impact reducing device comprises an impact reducing cover arranged on the upper end face of the primary speed reducing and noise reducing plate and an elastic body arranged between the impact reducing cover and the primary speed reducing and noise reducing plate.

The further improvement is that: the shock reducing cover is a wear-resistant shock reducing cover.

The further improvement is that: the elastomer is a rubber elastomer.

The further improvement is that: the inner wall of the shell and the second-stage speed reduction noise reduction plates are arranged between the two adjacent connecting plates and provided with intercepting strips used for intercepting strip-shaped sundries in gas.

After the technical scheme is adopted, the utility model has the beneficial effects that: the end department that shells inner wall is located the casing is provided with the device of making an uproar that falls that slows down, and the device of making an uproar that falls reduces the gas velocity of flow and alleviates gaseous noise production in the casing when gaseous inlet end through the casing that slows down, and the casing is inside difficult impaired, is favorable to long-term the use.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural diagram of the casing, the two-stage speed reduction and noise reduction plate, the connecting plate and the intercepting strip of the utility model.

Detailed Description

The utility model will now be further described with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1 to 2, the technical solution adopted by the present embodiment is:

the utility model provides a relay valve exhaust muffler, includes casing 1, still including set up in 1 inner wall of casing is located 2 departments of inlet end of casing 1 are used for reducing the gas velocity of flow and alleviate the speed reduction and noise reduction device that gas produced the noise in casing 1.

The device of making an uproar falls in the speed reduction is including set up in 1 casing lie in 2 first time of being used for of the inlet end of casing 1 department reduce the gaseous velocity of flow and alleviate gaseous one-level of producing the noise in the casing fall the board 3, set up in 1 casing lie in the one-level is reduced the gaseous velocity of flow and is alleviateed gaseous second grade of producing the noise in 1 casing fall the board 4, connect fall the board 4 with the several connecting plates 5 of 1 inner wall of casing, connection fall the board 3 with the spliced pole 6 of the board 4 falls in the second grade of reducing the speed.

The area of the upper end face of the first-stage speed reducing and noise reducing plate 3 is smaller than that of the upper end face of the second-stage speed reducing and noise reducing plate 4.

The upper end face of the first-stage speed reduction noise reduction plate 3 is provided with a shock reduction device which reduces the impact force on the first-stage speed reduction noise reduction plate 3 when the gas impacts the upper end face of the first-stage speed reduction noise reduction plate 3.

The impact reducing device comprises an impact reducing cover 7 arranged on the upper end face of the primary speed reducing and noise reducing plate 3 and an elastic body 8 arranged between the impact reducing cover 7 and the primary speed reducing and noise reducing plate 3.

The impact reduction cover 7 is a wear-resistant impact reduction cover.

The elastic body 8 is a rubber elastic body.

The inner wall of the shell 1 and the second-stage speed reduction noise reduction plate 4 are arranged between and adjacent to the connecting plates 5, and intercepting strips 9 used for intercepting strip-shaped sundries in gas are arranged between the connecting plates.

The working principle of the utility model is as follows: the air inlet 2 that the 1 inner wall of casing is located casing 1 is located and is provided with the device of making an uproar that falls that slows down, and the cooperation of the board 3 of making an uproar falls in the one-level speed reduction, the board 4 of making an uproar falls in the second grade speed reduction, connecting plate 5, spliced pole 6 reduces the gas velocity of flow and alleviates gaseous noise production in casing 1 when gaseous inlet 2 through casing 1, and casing 1 is inside difficult impaired, is favorable to long-term the use. The impact reduction cover 7 and the elastic body 8 are matched to reduce the impact force on the primary speed reduction noise reduction plate 3 when the gas impacts the upper end surface of the primary speed reduction noise reduction plate 3, and the interception strip 9 is used for intercepting strip-shaped sundries in the gas.

While there have been shown and described what are at present considered to be the fundamental and essential features of the utility model and its advantages, it will be understood by those skilled in the art that the utility model is not limited by the embodiments described above, which are merely illustrative of the principles of the utility model, but various changes and modifications may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims and their equivalents.

Claims

1. The utility model provides a relay valve exhaust muffler, includes the casing, its characterized in that: the gas-liquid separator further comprises a speed reduction and noise reduction device which is arranged on the inner wall of the shell and is used for reducing the flow velocity of gas and reducing the noise generated by the gas in the shell at the gas inlet end of the shell.

2. A relay valve exhaust muffler according to claim 1, wherein: the device of making an uproar falls in the speed reduction including set up in be located in the casing be used for reducing the gas flow rate for the first time of the inlet end department of casing and alleviate gaseous one-level speed reduction that produces the noise in the casing fall the board, set up in be located in the casing be used for reducing the gas flow rate for the second time under the board of making an uproar falls the board, connects the board of making an uproar falls in the second grade speed reduction that produces the noise in the casing with shells inner wall's several connecting plates, connection the board of making an uproar falls in the one-level speed reduction with the spliced pole of the board of making an uproar falls in the second grade speed reduction.

3. A relay valve exhaust muffler according to claim 2, wherein: the area of the upper end face of the first-stage speed reducing and noise reducing plate is smaller than that of the upper end face of the second-stage speed reducing and noise reducing plate.

4. A relay valve exhaust muffler according to claim 2, wherein: and the upper end surface of the primary speed reducing and noise reducing plate is provided with a shock reducing device which reduces the impact force on the primary speed reducing and noise reducing plate when gas impacts the upper end surface of the primary speed reducing and noise reducing plate.

5. A relay valve exhaust muffler according to claim 4, wherein: the impact reducing device comprises an impact reducing cover arranged on the upper end face of the primary speed reducing and noise reducing plate and an elastic body arranged between the impact reducing cover and the primary speed reducing and noise reducing plate.

6. A relay valve exhaust muffler according to claim 5, wherein: the shock reducing cover is a wear-resistant shock reducing cover.

7. A relay valve exhaust muffler according to claim 5, wherein: the elastomer is a rubber elastomer.

8. A relay valve exhaust muffler according to claim 2, wherein: the inner wall of the shell and the second-stage speed reduction noise reduction plates are arranged between the two adjacent connecting plates and provided with intercepting strips used for intercepting strip-shaped sundries in gas.