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 relates to the technical field of noise reduction of nitrogen making machines and comprises a nitrogen making machine body, an air inlet end is mounted on the side edge of the nitrogen making machine body, the end head of the air inlet end is connected with an oxygen discharge pipe, the other end of the oxygen discharge pipe is connected with an exhaust end, and barrier plates are distributed in the oxygen discharge pipe at equal intervals. According to the oxygen exhaust device, the barrier plate and the first sound insulation cotton are arranged, in the oxygen exhaust process, the flow speed of gas can be effectively reduced through blocking of the barrier plate, the first sound insulation cotton wrapping the outer side of the oxygen exhaust pipe is matched, noise can be absorbed, and therefore noise can be effectively reduced; and after the device is used for a period of time, a worker can pull out the limiting bolt from the interior of the oxygen discharging pipe, so that regular replacement operation of the second sound insulation cotton and the first sound insulation cotton is conveniently realized, and the noise absorption effect can be guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of nitrogen generator silencer, in particular to a nitrogen generator oxygen exhaust silencer protection device. Background Art

[0002] A nitrogen generator is a device that uses air as raw material and uses physical methods to separate oxygen and nitrogen in air to obtain nitrogen.

[0003] During the operation of the nitrogen generator, the separated oxygen will be discharged through the oxygen exhaust pipe while generating nitrogen. During the oxygen exhaust process, when the air pressure is high when the oxygen is discharged, the airflow discharge speed is relatively fast. Since the structure of the existing oxygen exhaust pipe is relatively simple, the oxygen will constantly collide with the inner wall of the oxygen exhaust pipe and generate noise, which will affect the working environment of the staff and the hearing health of the users. Therefore, we propose a nitrogen generator oxygen exhaust silencing protection device to solve the above problems. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a noise reduction and protection device for exhausting oxygen from a nitrogen generator.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A noise reduction protection device for exhausting oxygen from a nitrogen generator comprises a nitrogen generator body, an air inlet end is installed on the side of the nitrogen generator body, and the end of the air inlet end is connected to an oxygen exhaust pipe, the other end of the oxygen exhaust pipe is connected to an exhaust end, baffles are equidistantly distributed inside the oxygen exhaust pipe, and the cross section of the baffles is set to be funnel-shaped, and the outer side of the nitrogen generator body is wrapped with a first sound insulation cotton.

[0007] Preferably, a rubber ring is glued to the inner wall of the oxygen exhaust pipe, and the outer side of the blocking plate is connected to the inner wall of the rubber ring.

[0008] Preferably, a moving ball is abutted on one side of the blocking plate away from the air inlet end, and connecting rods are equidistantly distributed on the outside of the moving ball, the ends of the connecting rods are connected to connecting blocks, and the sides of the connecting blocks are connected to the blocking plate through springs.

[0009] Preferably, a slot hole is provided inside the connection block, and a guide rod is inserted into the slot hole, and an end of the guide rod is fixedly connected to the blocking plate.

[0010] Preferably, the outer side of the moving ball is wrapped with a protective cover, and the protective cover is made of rubber material.

[0011] Preferably, one end of the first sound insulation cotton is connected to a mounting ring, and limiting bolts are symmetrically inserted inside the mounting ring, the ends of the limiting bolts are connected to rotating blocks, and a limiting groove adapted to the limiting bolts is opened inside the oxygen exhaust pipe.

[0012] Preferably, a second sound insulation cotton is connected to the inner side of the mounting ring, and a receiving cavity adapted for the second sound insulation cotton is provided on the inner wall of the oxygen exhaust pipe.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The device is provided with a blocking plate and a first sound insulation cotton. During the oxygen discharge process, the gas flow rate can be effectively reduced by blocking the blocking plate, and the first sound insulation cotton wrapped around the outside of the oxygen discharge pipe can absorb the noise, thereby effectively reducing the noise generation and protecting the working environment of the staff.

[0015] 2. The device is provided with a rotating block and a mounting ring. After being used for a period of time, the staff can pull out the limit bolt from the inside of the oxygen exhaust pipe to facilitate the regular replacement of the second sound insulation cotton and the first sound insulation cotton, thereby ensuring the overall noise absorption effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional structural schematic diagram of a noise-reducing and protective device for exhausting oxygen from a nitrogen generator proposed by the utility model;

[0017] Figure 2 for Figure 1 A three-dimensional cross-sectional diagram of the air intake end and the oxygen exhaust pipe structure;

[0018] Figure 3 for Figure 1 A three-dimensional schematic diagram of the connecting block and spring structure;

[0019] Figure 4 for Figure 1 A schematic diagram of a three-dimensional cross-section of the oxygen exhaust pipe and the exhaust end structure;

[0020] Figure 5 for Figure 1 Schematic diagram of the three-dimensional cross-section of the moving ball and protective sleeve structure.

[0021] In the figure: 1. nitrogen generator body; 2. air inlet end; 3. oxygen exhaust pipe; 4. exhaust end; 5. baffle plate; 6. first sound insulation cotton; 7. mounting ring; 8. second sound insulation cotton; 9. limit bolt; 10. rotating block; 11. moving ball; 12. connecting rod; 13. connecting block; 14. spring; 15. guide rod; 16. protective cover; 17. rubber ring. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] Reference Figure 1-5 A noise reduction protection device for exhausting oxygen from a nitrogen generator comprises a nitrogen generator body 1, an air inlet end 2 is installed on the side of the nitrogen generator body 1, and the end of the air inlet end 2 is connected to an oxygen exhaust pipe 3. The nitrogen making principle and oxygen exhaust principle of the nitrogen generator body 1 are prior art, which will not be described in detail here. The other end of the oxygen exhaust pipe 3 is connected to an exhaust end 4, and baffles 5 are evenly distributed inside the oxygen exhaust pipe 3, and the cross-section of the baffles 5 is set to a funnel shape. The baffles 5 set in a funnel shape can reduce the passing area of ​​oxygen, thereby blocking oxygen. The outer side of the nitrogen generator body 1 is wrapped with a first sound insulation cotton 6, and the sound absorption principle of the first sound insulation cotton 6 is prior art, which will not be described in detail here.

[0024] Further, see Figure 4 It can be known that a rubber ring 17 is glued to the inner wall of the oxygen exhaust pipe 3, and the outer side of the blocking plate 5 is connected to the inner wall of the rubber ring 17. The setting of the rubber ring 17 can prevent oxygen from directly hitting the inner wall of the oxygen exhaust pipe 3, and because the rubber ring 17 has certain elastic characteristics, it can buffer the impact force to a certain extent, thereby weakening the generation of noise.

[0025] Further, see Figure 5 It can be known that a moving ball 11 is abutted against the side of the blocking plate 5 away from the air inlet end 2, and connecting rods 12 are equidistantly distributed on the outside of the moving ball 11, and a connecting block 13 is connected to the end of the connecting rod 12, and the side of the connecting block 13 is connected to the blocking plate 5 through a spring 14. When in use, the right end opening of each group of blocking plates 5 can be blocked by the mutual cooperation of the moving ball 11 and the spring 14. In addition, since the elastic force of the spring 14 is limited, when the gas passes through the blocking plate 5, it will drive the spring 14 to deform and expand, so that the moving ball 11 and the blocking plate 5 are moved away from each other, so as to open the right side opening of the blocking plate 5. Through the setting of the spring 14, a certain blockage can be further provided for the oxygen in the flow process.

[0026] Further, see Figure 5 It can be known that a groove is opened inside the connecting block 13, and a guide rod 15 is inserted into the groove. The end of the guide rod 15 is fixedly connected to the blocking plate 5. When the moving ball 11 moves, the connecting block 13 can be driven to slide along the outer wall of the guide rod 15 under force, so as to realize the guiding operation of the moving ball 11 and the connecting rod 12, thereby preventing the spring 14 from being skewed.

[0027] Further, see Figure 5It can be known that the outer side of the moving ball 11 is wrapped with a protective cover 16, and the protective cover 16 is set to rubber material. One end of the connecting rod 12 is connected to the protective cover 16. The protective cover 16 set to rubber material can protect the outer side of the moving ball 11 to prevent the moving ball 11 from directly hitting the blocking plate 5 and generating noise when it is reset.

[0028] Further, see Figure 4 It can be known that one end of the first sound insulation cotton 6 is connected to a mounting ring 7, and a limiting bolt 9 is symmetrically inserted inside the mounting ring 7, the end of the limiting bolt 9 is connected to a rotating block 10, and a limiting groove matched with the limiting bolt 9 is provided inside the oxygen exhaust pipe 3, and an internal thread is provided on the inner wall of the limiting groove. When in use, through the mutual cooperation of the mounting ring 7 and the limiting bolt 9, the first sound insulation cotton 6 can be quickly removed from the outer periphery of the nitrogen generator body 1 for replacement after a period of use, so as to ensure the sound absorption effect of the first sound insulation cotton 6.

[0029] Further, see Figure 4 It can be known that the inner side of the mounting ring 7 is connected to the second sound insulation cotton 8, and the inner wall of the oxygen exhaust pipe 3 is provided with a accommodating cavity adapted for the second sound insulation cotton 8. The second sound insulation cotton 8 inserted inside the accommodating cavity can further enhance the noise absorption effect.

[0030] Working principle: When the utility model is in use, the oxygen generated by the nitrogen generator body 1 during operation can be transported to the inside of the oxygen exhaust pipe 3 through the guidance of the air inlet end 2. The multiple groups of baffles 5 arranged inside the oxygen exhaust pipe 3 can achieve preliminary blocking of the oxygen. In addition, when the airflow passes through the baffle 5, a thrust will be applied to the moving ball 11. Through the cooperation of the connecting rod 12 and the spring 14, the moving ball 11 can be forced to approach the exhaust end 4, thereby realizing the opening of the right side of the baffle 5. At this time, the oxygen can continue to enter the other group of baffles 5 from the opening. The blocking of the moving ball 11 and the connecting rod 12 can further slow down the flow rate of the oxygen. After the oxygen passes through the multiple groups of baffles 5 one after another, it will be discharged from the exhaust end 4. The first sound insulation cotton 6 and the second sound insulation cotton 8 arranged on the outer side and the inner wall of the oxygen exhaust pipe 3 can absorb the noise, so as to enhance the silencing effect of the device and realize the protection of the staff. The above is the entire working principle of the utility model.

[0031] In the present invention, the installation method, connection method or setting method of all the components mentioned above are common mechanical methods, and the specific structures, models and coefficient indicators of all its components are its own technology. As long as it can achieve its beneficial effects, it can be implemented, so it will not be elaborated.

[0032] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited by the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principle of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

[0033] In the present utility model, unless otherwise stated, the directional words contained in the terms such as "up, down, left, right, front, back, inside, outside, vertical, horizontal" only represent the orientation of the term in normal use, or are common names understood by those skilled in the art, and should not be regarded as limitations on the term. At the same time, number series nouns such as "first", "second" and "third" do not represent specific quantities and orders, but are merely used to distinguish names. Moreover, the terms "include", "comprise" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also includes other elements that are not explicitly listed, or also includes elements inherent to such process, method, article or device.

Claims

1. A noise-reducing protective device for exhausting oxygen from a nitrogen generator, comprising a nitrogen generator body (1), characterized in that: An air inlet end (2) is installed on the side of the nitrogen generator body (1), and the end of the air inlet end (2) is connected to an oxygen exhaust pipe (3), and the other end of the oxygen exhaust pipe (3) is connected to an exhaust end (4), and baffle plates (5) are evenly distributed inside the oxygen exhaust pipe (3), and the cross section of the baffle plates (5) is arranged in a funnel shape, and the outer side of the nitrogen generator body (1) is wrapped with a first sound insulation cotton (6).

2. A noise reduction protection device for exhausting oxygen from a nitrogen generator according to claim 1, characterized in that: A rubber ring (17) is glued to the inner wall of the oxygen exhaust pipe (3), and the outer side of the blocking plate (5) is connected to the inner wall of the rubber ring (17).

3. The noise reduction protection device for exhausting oxygen from a nitrogen generator according to claim 1 is characterized in that: A moving ball (11) is abutted against a side of the blocking plate (5) away from the air inlet end (2), and connecting rods (12) are evenly distributed outside the moving ball (11), the ends of the connecting rods (12) are connected to connecting blocks (13), and the sides of the connecting blocks (13) are connected to the blocking plate (5) via springs (14).

4. A noise reduction protection device for exhausting oxygen from a nitrogen generator according to claim 3, characterized in that: A slot hole is provided inside the connection block (13), and a guide rod (15) is inserted into the slot hole. The end of the guide rod (15) is fixedly connected to the blocking plate (5).

5. The noise reduction protection device for exhausting oxygen from a nitrogen generator according to claim 3 is characterized in that: The outer side of the moving ball (11) is wrapped with a protective sleeve (16), and the protective sleeve (16) is made of rubber material.

6. A noise reduction protection device for exhausting oxygen from a nitrogen generator according to claim 1, characterized in that: One end of the first sound insulation cotton (6) is connected to a mounting ring (7), and a limiting bolt (9) is symmetrically inserted inside the mounting ring (7), the end of the limiting bolt (9) is connected to a rotating block (10), and a limiting groove adapted to the limiting bolt (9) is opened inside the oxygen exhaust pipe (3).

7. A noise reduction protection device for exhausting oxygen from a nitrogen generator according to claim 6, characterized in that: The inner side of the mounting ring (7) is connected to a second sound insulation cotton (8), and the inner wall of the oxygen exhaust pipe (3) is provided with a receiving cavity adapted to the second sound insulation cotton (8).

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