Noise reduction protection device for oxygen discharge of nitrogen making machine

Abstract

The utility model discloses a noise reduction protection device for oxygen discharge of a nitrogen making machine, which belongs to the field of noise reduction of the nitrogen making machine and comprises two symmetrically arranged inner pipe pieces, a plurality of fixing rods are fixedly connected to opposite cambered surfaces of the two inner pipe pieces, one side of each fixing rod is fixedly connected with a spring rod, and the other side of each fixing rod is fixedly connected with a piston rod. One side of each spring rod is fixedly connected with an airflow buffering cushion, the airflow buffering cushions are arranged between the two inner pipe pieces in a staggered mode, and by means of cooperation between the airflow buffering cushions and the spring rods, when high-speed oxygen airflow is discharged by the nitrogen making machine, the speed of the oxygen airflow can be effectively reduced, and the oxygen flow is prevented from being blocked. Therefore, noise generated when high-speed oxygen flow collides with the interior of the inner pipe piece is effectively reduced, meanwhile, the noise generated in the pipeline can be further absorbed through the sound insulation cotton layer, collision between the sound insulation cotton layer and the outer connecting pipe can be buffered through the rubber sleeve, and the noise reduction effect is further improved.

Description

Technical Field

[0001] The utility model relates to the field of nitrogen generator silencer, and more specifically to a nitrogen generator oxygen exhaust silencer protection device. Background Art

[0002] A nitrogen generator is a nitrogen-generating equipment that separates nitrogen and oxygen in the air. The nitrogen generator needs to discharge oxygen while producing nitrogen.

[0003] In the process of the nitrogen generator discharging oxygen, when the air pressure is high, the air flow discharge speed is relatively fast. At this time, the oxygen will constantly collide with the inner wall of the oxygen exhaust pipe, causing noise in the exhaust pipe. Workers are prone to hearing damage if they are in a strong noise environment for a long time.

[0004] Therefore, in view of the above problems, a noise reduction and protection device for exhausting oxygen from a nitrogen generator is proposed. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] In view of the problems existing in the prior art, the purpose of the utility model is to provide a noise reduction protection device for exhaust oxygen from a nitrogen generator, which can achieve the function of reducing noise by slowing down the oxygen gas flow and facilitate the staff to disassemble, assemble and repair the internal components.

[0007] 2. Technical solution

[0008] To solve the above problems, the utility model adopts the following technical solutions.

[0009] A noise-reducing protective device for exhausting oxygen from a nitrogen generator comprises two symmetrically arranged inner tube segments, the relative arc surfaces of the two inner tube segments are fixedly connected with a plurality of fixing rods, one side of the plurality of fixing rods are fixedly connected with a spring rod, one side of the plurality of spring rods are fixedly connected with an airflow buffer pad, the plurality of airflow buffer pads are staggered between the two inner tube segments, one side of the plurality of airflow buffer pads is penetrated with a plurality of evenly distributed vent holes, both sides of the two inner tube segments are fixedly connected with mounting plates, the top surfaces of the four mounting plates are penetrated with a plurality of threaded holes, and the internal threads of the threaded holes are threaded with bolts.

[0010] Furthermore, the outsides of the two inner tube segments are fixedly connected with limiting plates, and the outsides of the two inner tube segments are slidably provided with mounting tubes, the inner walls of the mounting tubes are provided with two No. 1 limiting grooves, and the inner walls of the mounting tubes are provided with two No. 2 limiting grooves.

[0011] Furthermore, the four mounting plates are slidably connected to the two No. 1 limiting grooves respectively, and the two limiting plates are slidably connected to the two No. 2 limiting grooves respectively.

[0012] Furthermore, a sound insulation cotton layer is sleeved on the outside of the installation tube.

[0013] Furthermore, the outside of the sound insulation cotton layer is sleeved with an external connecting pipe, and a plurality of rubber sleeves are arranged between the sound insulation cotton layer and the external connecting pipe.

[0014] Furthermore, one end of the external connecting pipe is fixedly connected with a connecting flange.

[0015] 3. Beneficial effects

[0016] Compared with the prior art, the advantages of the present invention are:

[0017] (1) In this solution, by utilizing the cooperation between the airflow buffer pad and the spring rod, when the high-speed oxygen airflow is discharged by the nitrogen generator, the oxygen airflow can be effectively decelerated, thereby effectively reducing the noise generated by the collision between the high-speed oxygen airflow and the inside of the inner pipe segment. At the same time, the sound insulation cotton layer can further absorb the noise generated in the pipeline, and the rubber sleeve can buffer the collision between the sound insulation cotton layer and the external connecting pipe, further improving the noise reduction effect.

[0018] (2) In this solution, the four mounting plates are aligned one by one, and the inner tube segment can be quickly disassembled and assembled using threaded holes and bolts, thereby facilitating maintenance and repair of the parts inside the inner tube segment by the staff, thereby improving the convenience of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0020] Figure 2 It is a front cross-sectional structural schematic diagram of the utility model;

[0021] Figure 3 For the utility model Figure 2 A magnified schematic diagram of the structure at center A;

[0022] Figure 4 It is a schematic diagram of the disassembled structure of part of the structure of the utility model.

[0023] Description of the numbers in the figure:

[0024] 1. Inner pipe segment; 2. Fixing rod; 3. Spring rod; 4. Air flow buffer pad; 5. Vent hole; 6. Mounting plate; 7. Threaded hole; 8. Limiting plate; 9. Mounting tube; 10. No. 1 limiting groove; 11. No. 2 limiting groove; 12. Sound insulation cotton layer; 13. Rubber sleeve; 14. External connecting pipe; 15. Connecting flange. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0026] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0028] Example:

[0029] See also Figure 1 - Figure 4 A noise reduction protection device for exhausting oxygen from a nitrogen generator comprises two symmetrically arranged inner tube segments 1, the relative arc surfaces of the two inner tube segments 1 are fixedly connected with a plurality of fixing rods 2, one side of the plurality of fixing rods 2 is fixedly connected with a spring rod 3, one side of the plurality of spring rods 3 is fixedly connected with an air flow buffer pad 4, the plurality of air flow buffer pads 4 are staggeredly arranged between the two inner tube segments 1, one side of the plurality of air flow buffer pads 4 is penetrated with a plurality of evenly distributed vent holes 5, both sides of the two inner tube segments 1 are fixedly connected with mounting plates 6, the top surfaces of the four mounting plates 6 are penetrated with a plurality of threaded holes 7, and the internal threads of the threaded holes 7 are threadedly connected with bolts.

[0030] In the present solution, the two inner tube segments 1 can be combined into a circular tube after the four mounting plates 6 are aligned one by one, and are fixed with bolts on the threaded holes 7. When the staff needs to repair the relevant parts inside the inner tube segment 1, the inner tube segment 1 can also be quickly disassembled. The airflow buffer pads 4 are staggered in the circular tube formed by the two inner tube segments 1. When the oxygen airflow enters the inner tube segment 1, the oxygen airflow will contact the airflow buffer pads 4. At this time, the airflow buffer pads 4 are pushed by the pressure of the airflow to push the spring rod 3. The spring rod 3 generates elastic force after contraction, thereby buffering the airflow buffer pads 4. At the same time, the airflow buffer pads 4 are used to reduce the speed of the oxygen airflow, thereby effectively reducing the noise generated by the collision of the high-speed oxygen airflow with the inside of the inner tube segment 1.

[0031] See also Figure 1 , Figure 3 and Figure 4 The outsides of the two inner tube segments 1 are fixedly connected with limit plates 8, and the outsides of the two inner tube segments 1 are slidably provided with mounting tubes 9. The inner walls of the mounting tubes 9 are provided with two No. 1 limit grooves 10, and the inner walls of the mounting tubes 9 are provided with two No. 2 limit grooves 11.

[0032] Specifically, the four mounting pieces 6 are slidably connected to the two No. 1 limiting grooves 10 , respectively, and the two limiting pieces 8 are slidably connected to the two No. 2 limiting grooves 11 , respectively.

[0033] In this solution, the first limiting groove 10 and the second limiting groove 11 cooperate with each other, which can facilitate the staff to quickly and accurately install the two combined inner pipe segments 1 into the interior of the installation pipe 9.

[0034] See also Figure 2 , Figure 3 and Figure 4 The outside of the mounting tube 9 is sleeved with a sound insulation cotton layer 12 .

[0035] In this solution, the sound insulation cotton layer 12 can absorb the noise generated inside the installation pipe 9, further improving the noise reduction effect of the device.

[0036] See also Figure 1 - Figure 3 The outside of the sound insulation cotton layer 12 is sleeved with an external connecting pipe 14, and a plurality of rubber sleeves 13 are arranged between the sound insulation cotton layer 12 and the external connecting pipe 14.

[0037] In this solution, the rubber sleeve 13 has a certain elasticity, which can fix the sound insulation cotton layer 12 on the outside of the mounting tube 9. At the same time, it can also buffer the collision between the sound insulation cotton layer 12 and the external connecting tube 14 caused by the passage of oxygen gas, thereby further reducing the noise of the nitrogen generator when exhausting oxygen.

[0038] See also Figure 1 - Figure 3 One end of the external connecting pipe 14 is fixedly connected with a connecting flange 15 .

[0039] In this solution, the connecting flange 15 is used to install the entire device onto the oxygen exhaust pipeline of the nitrogen generator.

[0040] Working principle: First, the staff aligns the mounting pieces 6 on both sides of the two inner segments 1 one by one, and fixes the two inner segments 1 with bolts, then installs the pipeline formed by the two inner segments 1 into the mounting pipe 9, then puts the sound insulation cotton layer 12 on the outside of the mounting pipe 9, and uses the rubber sleeve 13 to tightly cover the sound insulation cotton layer 12 on the mounting pipe 9, and installs it as a whole into the external connecting pipe 14, finally aligns the external connecting pipe 14 with the oxygen exhaust pipeline of the nitrogen generator, and installs the external connecting pipe 14 to the nitrogen generator with the connecting flange 15;

[0041] When the nitrogen generator is discharging oxygen, the high-speed oxygen airflow will pass through the airflow buffer pad 4, and the elastic force of the spring rod 3 will be used to buffer the impact on the airflow buffer pad 4, and the airflow buffer pad 4 and the vent 5 will be used to slow down the oxygen airflow, thereby effectively reducing the noise generated by the collision between the high-speed oxygen airflow and the inner pipe segment 1. At the same time, the sound insulation cotton layer 12 can further absorb the noise generated in the pipeline, and the rubber sleeve 13 can buffer the collision between the sound insulation cotton layer 12 and the external connecting pipe 14, further improving the noise reduction effect.

[0042] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A noise-reducing protective device for exhausting oxygen from a nitrogen generator, characterized in that: The invention comprises two symmetrically arranged inner tube segments (1), wherein the opposite arc surfaces of the two inner tube segments (1) are fixedly connected with a plurality of fixing rods (2), one side of the plurality of fixing rods (2) is fixedly connected with a spring rod (3), one side of the plurality of spring rods (3) is fixedly connected with an air flow buffer pad (4), the plurality of air flow buffer pads (4) are staggeredly arranged between the two inner tube segments (1), one side of the plurality of air flow buffer pads (4) is penetrated with a plurality of evenly distributed ventilation holes (5), both sides of the two inner tube segments (1) are fixedly connected with mounting plates (6), the top surfaces of the four mounting plates (6) are penetrated with a plurality of threaded holes (7), and the internal threads of the threaded holes (7) are threadedly connected with bolts.

2. A noise reduction protection device for exhausting oxygen from a nitrogen generator according to claim 1, characterized in that: The outsides of the two inner tube segments (1) are fixedly connected with limit plates (8), and the outsides of the two inner tube segments (1) are slidably provided with mounting tubes (9), the inner walls of the mounting tubes (9) are provided with two No. 1 limit grooves (10), and the inner walls of the mounting tubes (9) are provided with two No. 2 limit grooves (11).

3. A noise reduction protection device for exhausting oxygen from a nitrogen generator according to claim 2, characterized in that: The four mounting plates (6) are respectively slidably connected to the two No. 1 limiting grooves (10), and the two limiting plates (8) are respectively slidably connected to the two No. 2 limiting grooves (11).

4. A noise reduction protection device for exhausting oxygen from a nitrogen generator according to claim 2, characterized in that: The outside of the installation tube (9) is sleeved with a sound insulation cotton layer (12).

5. A noise reduction protection device for exhausting oxygen from a nitrogen generator according to claim 4, characterized in that: The exterior of the sound insulation cotton layer (12) is sleeved with an external connection pipe (14), and a plurality of rubber sleeves (13) are arranged between the sound insulation cotton layer (12) and the external connection pipe (14).

6. A noise reduction protection device for exhausting oxygen from a nitrogen generator according to claim 5, characterized in that: One end of the external connecting pipe (14) is fixedly connected to a connecting flange (15).

Images