CN218996352U

CN218996352U - Silencer structure for reducing regeneration noise of nitrogen making machine

Info

Publication number: CN218996352U
Application number: CN202223102808.XU
Authority: CN
Inventors: 鲁小俊
Original assignee: Gaisiyi Technology Suzhou Co ltd
Current assignee: Gaisiyi Technology Suzhou Co ltd
Priority date: 2022-11-22
Filing date: 2022-11-22
Publication date: 2023-05-09
Anticipated expiration: 2032-11-22

Abstract

The utility model discloses a silencer structure for reducing regeneration noise of a nitrogen making machine, which belongs to the technical field of nitrogen making machine silencers and comprises an outer shell, wherein an air outlet is formed in the upper end of the outer shell, an air inlet pipe is arranged in the middle of the lower end of the outer shell, the air inlet pipe is arranged in an L shape, one end of the air inlet pipe penetrates into the outer shell to be arranged in a closed mode, a connecting seat is arranged at the other end of the air inlet pipe, a silencing assembly is arranged in the outer shell, when the pressure of air flow is increased, the piston plate is pushed to enable the caliber of an air outlet communicated with a through hole to be increased by arranging the piston plate, so that the flow speed of the air flow is increased, the air flow is discharged through the air outlet at the same time, the inner shell is refluxed, the residence time of the air in the outer shell is prolonged, and then the air is discharged from the air outlet after passing through an annular coconut cushion and a pore plate, and the effect of effective noise reduction is achieved.

Description

Silencer structure for reducing regeneration noise of nitrogen making machine

Technical Field

The utility model relates to the technical field of nitrogen making machine silencers, in particular to a silencer structure for reducing regeneration noise of a nitrogen making machine.

Background

The nitrogen making machine uses clean compressed air as raw material, uses carbon molecular sieve as adsorbent and uses carbon molecular sieve filled with micropores to selectively adsorb gas molecules so as to obtain nitrogen gas. After the adsorption of the carbon molecular sieve reaches saturation, the adsorption tower of the nitrogen making machine needs to discharge oxygen molecules in the holes of the molecular sieve, but the noise generated when the adsorption tower is used for exhausting is larger, most of the adsorption towers are wound with sponge strips, the noise reduction effect on the exhaust pipe is realized, but the sponge strips are poorer in noise reduction effect and can only play a role in smaller exhaust rate, because the exhaust rate is smaller, the air flow pressure is smaller, the generated noise is smaller, but the gas discharge rate is changed, and when the exhaust rate is larger, the air flow pressure is larger, the generated noise is larger, and the sponge strips are difficult to play an effective protective role.

Disclosure of Invention

The utility model aims at: in order to solve the above technical problems, a silencer structure for reducing the regeneration noise of a nitrogen generator is provided.

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

the silencer structure for reducing the regeneration noise of the nitrogen making machine comprises an outer shell, wherein an air outlet is formed in the upper end of the outer shell, an air inlet pipe is arranged in the middle of the lower end of the outer shell, the air inlet pipe is arranged in an L shape, one end of the air inlet pipe penetrates into the outer shell to be arranged in a closed manner, a connecting seat is arranged at the other end of the air inlet pipe, and a silencing assembly is arranged in the outer shell;

the silencer assembly comprises an inner shell and a U-shaped sealing shell which is rotationally sleeved at the upper end of the air inlet pipe, wherein a connecting sleeve is fixedly arranged at the middle part of the upper end of the U-shaped sealing shell, the lower end of the connecting sleeve is rotationally connected with the upper end face of the air inlet pipe through a sealing bearing, a torsion spring is sleeved at the middle part of the connecting sleeve, the upper end of the torsion spring is fixedly clamped with the inner top surface of the U-shaped sealing shell, the lower end of the torsion spring is fixedly clamped with the upper end face of the air inlet pipe, a fixing rod is arranged at the middle part of the inner top surface of the inner shell, the lower end of the fixing rod movably penetrates into the air inlet pipe and is provided with a piston plate, a sliding block is fixedly arranged at the middle part of the inner wall of the connecting sleeve, and a spiral sliding groove matched with the sliding block is formed in the middle part of the side wall of the fixing rod.

As a further description of the above technical solution:

the lower end face of the inner shell and the inner bottom face of the outer shell are provided with gaps, and the inner diameter of the inner shell is larger than the outer diameter of the U-shaped sealing shell.

As a further description of the above technical solution:

and a pore plate is arranged above the inner part of the outer shell.

As a further description of the above technical solution:

an annular coconut cushion is arranged between the outer wall of the inner shell and the inner wall of the outer shell, the upper end face of the annular coconut cushion is connected with the lower end face of the pore plate, and the lower end face of the annular coconut cushion is connected with the inner bottom face of the outer shell.

As a further description of the above technical solution:

two exhaust ports are symmetrically formed in the middle of the side wall of the air inlet pipe, and two ports matched with the exhaust ports are formed in the middle of the side wall of the U-shaped sealing shell.

As a further description of the above technical solution:

the vertical distance from the upper end face of the inner shell to the lower end face of the pore plate is greater than the vertical distance from the upper end to the lower end of the spiral chute.

In summary, due to the adoption of the technical scheme, the beneficial effects of the utility model are as follows:

according to the utility model, by arranging the piston plate, when the pressure of air flow is increased, the piston plate is pushed to enable the caliber of the air outlet communicated with the through hole to be increased, so that the flow speed of the air flow is increased, meanwhile, the air flow is discharged through the air outlet, flows back in the inner shell, the residence time of the air in the outer shell is increased, and then the air is discharged from the air outlet after passing through the annular coconut cushion and the pore plate, so that the effect of effective noise reduction is realized.

Drawings

FIG. 1 shows an external view of a muffler provided according to an embodiment of the present utility model;

FIG. 2 shows a schematic view of a muffler structure provided according to an embodiment of the present utility model;

FIG. 3 shows a schematic diagram of the structure of FIG. 2A according to an embodiment of the present utility model;

fig. 4 shows a schematic view of a partial structure of a muffler provided according to an embodiment of the present utility model in a plan view.

Legend description: 1. an outer housing; 2. an air outlet; 3. an air inlet pipe; 4. a connecting seat; 5. an inner housing; 6. a U-shaped seal housing; 7. connecting sleeves; 8. a torsion spring; 9. a fixed rod; 10. a piston plate; 11. a slide block; 12. a spiral chute; 13. an orifice plate; 14. an annular coconut cushion; 15. an exhaust port; 16. and (5) a through hole.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, the present utility model provides a technical solution:

the silencer structure for reducing the regeneration noise of the nitrogen making machine comprises an outer shell 1, wherein an air outlet 2 is formed in the upper end of the outer shell 1, an air inlet pipe 3 is arranged in the middle of the lower end of the outer shell 1, the air inlet pipe 3 is in an L-shaped structure, one end of the air inlet pipe penetrates into the outer shell 1 to be in a closed structure, a connecting seat 4 is arranged at the other end of the air inlet pipe 3, and a silencing assembly is arranged in the outer shell 1;

the silencing assembly comprises an inner shell 5 and a U-shaped sealing shell 6 rotationally sleeved at the upper end of the air inlet pipe 3, a connecting sleeve 7 is fixedly arranged at the middle part of the upper end of the U-shaped sealing shell 6, the lower end of the connecting sleeve 7 is rotationally connected with the upper end face of the air inlet pipe 3 through a sealing bearing, a torsion spring 8 is sleeved at the middle part of the connecting sleeve 7, the upper end of the torsion spring 8 is fixedly clamped with the inner top face of the U-shaped sealing shell 6, the lower end of the torsion spring 8 is fixedly clamped with the upper end face of the air inlet pipe 3, a fixing rod 9 is arranged at the middle part of the inner top face of the inner shell 5, the lower end of the fixing rod 9 movably penetrates into the air inlet pipe 3 and is provided with a piston plate 10, when the air flow pressure in the air inlet pipe 3 is large, the piston plate 10 can be lifted upwards, a sliding block 11 is fixedly arranged at the middle part of the inner wall of the connecting sleeve 7, and a spiral sliding groove 12 matched with the sliding block 11 is formed in the middle part of the side wall of the fixing rod 9; through the mutual matching of the spiral chute 12 and the sliding block 11, the piston plate 10 moves up and down and drives the sliding block 11 to move, so that the deflection effect of the U-shaped sealing shell 6 is realized.

A gap exists between the lower end surface of the inner shell 5 and the inner bottom surface of the outer shell 1, and the inner diameter of the inner shell 5 is larger than the outer diameter of the U-shaped sealing shell 6; ensuring that the gas can flow back inside the inner housing 5 and flow out from the gap between the lower end surface of the inner housing 5 and the inner bottom surface of the outer housing 1.

An orifice plate 13 is arranged above the inside of the outer shell 1; through holes are uniformly formed in the middle of the pore plate 13, so that the circulation of gas is ensured.

An annular coconut cushion 14 is arranged between the outer wall of the inner shell 5 and the inner wall of the outer shell 1, the upper end surface of the annular coconut cushion 14 is connected with the lower end surface of the pore plate 13, and the lower end surface of the annular coconut cushion 14 is connected with the inner bottom surface of the outer shell 1; the inner wall of the annular coconut cushion 14 is in sliding contact with the inner shell 5.

Two exhaust ports 15 are symmetrically formed in the middle of the side wall of the air inlet pipe 3, and two through holes 16 matched with the exhaust ports 15 are formed in the middle of the side wall of the U-shaped sealing shell 6; the deflection of the U-shaped sealing shell 6 drives the through hole 16 to deflect, so that the caliber of the through hole 16 communicated with the exhaust port 15 is changed, the effect of changing the airflow rate is further realized, and the phenomenon that the airflow pressure is overlarge due to the fact that the caliber of the through hole 16 communicated with the exhaust port 15 is smaller is avoided.

The vertical distance from the upper end surface of the inner shell 5 to the lower end surface of the orifice plate 13 is greater than the vertical distance from the upper end to the lower end of the spiral chute 12; the fixing rod 9 is ensured to move up and down to drive the inner shell 5 to move up and down, the distance from the lower end surface of the inner shell 5 to the inner bottom surface of the outer shell 1 is changed, and the collision between the upper end surface of the inner shell 5 and the lower end surface of the pore plate 13 is avoided.

Working principle: when the air inlet pipe 3 is used, one end of the air inlet pipe 3 is connected with an exhaust gas discharge pipe of the nitrogen making machine through the connecting seat 4, air enters the inner shell 5 through the exhaust port 15 of the air inlet pipe 3, then enters the annular coconut cushion 14 through the lower end of the inner shell 5, and then is discharged from the air outlet 2 through the pore plate 13, when the air flow pressure of the air is increased, the piston plate 10 can be lifted up to move, the piston plate 10 drives the fixing rod 9 to move upwards, the fixing rod 9 moves upwards to drive the spiral chute 12 to move upwards, the connecting sleeve 7 deflects through the mutual matching of the spiral chute 12 and the sliding block 11, and then the U-shaped sealing shell 6 deflects, at the moment, the torsion spring 8 deforms, the caliber of the exhaust port 15 communicated with the through hole 16 increases, meanwhile, the distance between the lower end face of the inner shell 5 and the inner bottom face of the outer shell 1 increases, and then the circulation rate of the air in the inner shell 5 increases, and the air flow pressure is accelerated, and when the air flow pressure is reduced, the top lift force on the piston plate 10 is reduced, and then under the reset action of the torsion spring 8, the fixing rod 9 moves downwards, and the U-shaped sealing shell 6 deflects reversely, the piston 15 is enabled to move, the piston 15 and the sliding block is enabled to deflect slowly, and the piston plate 10 is enabled to move slowly due to the fact that the spiral chute 11 is enabled to move slowly, and the sliding chute 11 is deflected slowly, and the sliding plate is prevented from moving slowly.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. The utility model provides a reduce muffler structure of nitrogen making machine regeneration noise, includes shell body (1), shell body (1) upper end is equipped with gas outlet (2), shell body (1) lower extreme middle part is equipped with intake pipe (3), intake pipe (3) are L type setting and one end run through and are set up for sealing in shell body (1), intake pipe (3) other end is equipped with connecting seat (4), its characterized in that, shell body (1) inside is equipped with the amortization subassembly;

the silencer assembly comprises an inner shell (5) and a U-shaped sealing shell (6) which is rotationally sleeved at the upper end of an air inlet pipe (3), a connecting sleeve (7) is fixedly arranged at the middle part of the upper end of the U-shaped sealing shell (6), the lower end of the connecting sleeve (7) is rotationally connected with the upper end face of the air inlet pipe (3) through a sealing bearing, a torsion spring (8) is sleeved at the middle part of the connecting sleeve (7), the upper end of the torsion spring (8) is fixedly clamped with the inner top face of the U-shaped sealing shell (6), the lower end of the torsion spring (8) is fixedly clamped with the upper end face of the air inlet pipe (3), a fixing rod (9) is arranged at the middle part of the inner top face of the inner shell (5), the fixing rod (9) movably penetrates through the air inlet pipe (3) and is provided with a piston plate (10), a sliding block (11) is fixedly arranged at the middle part of the inner wall of the connecting sleeve (7), and a spiral chute (12) matched with the sliding block (11) is formed in the middle part of the side wall of the fixing rod (9).

2. The silencer structure for reducing regeneration noise of nitrogen making machine according to claim 1, wherein a gap exists between the lower end face of the inner shell (5) and the inner bottom face of the outer shell (1), and the inner diameter of the inner shell (5) is larger than the outer diameter of the U-shaped sealing shell (6).

3. Silencer structure for reducing the regeneration noise of nitrogen making machines according to claim 1, characterized in that the upper inside of the outer shell (1) is provided with an orifice plate (13).

4. The silencer structure for reducing regeneration noise of nitrogen making machine according to claim 1, wherein an annular coconut cushion (14) is arranged between the outer wall of the inner shell (5) and the inner wall of the outer shell (1), the upper end surface of the annular coconut cushion (14) is connected with the lower end surface of the pore plate (13), and the lower end surface of the annular coconut cushion (14) is connected with the inner bottom surface of the outer shell (1).

5. The silencer structure for reducing regeneration noise of nitrogen making machine according to claim 1, wherein two exhaust ports (15) are symmetrically formed in the middle of the side wall of the air inlet pipe (3), and two through holes (16) matched with the exhaust ports (15) are formed in the middle of the side wall of the U-shaped sealing shell (6).

6. The silencer structure for reducing the regeneration noise of the nitrogen making machine according to claim 1, wherein the vertical distance from the upper end surface of the inner shell (5) to the lower end surface of the orifice plate (13) is greater than the vertical distance from the upper end to the lower end of the spiral chute (12).