Exhaust silencer of medical oxygen generator

Abstract

The utility model discloses a medical oxygen generator exhaust silencer which comprises a pair of silencer body shells, the silencer body shells are semicircular, the interiors of the silencer body shells are of hollow structures, semicircular openings are formed in the two ends of each silencer body shell, a pair of binding belts are arranged on the silencer body shells in a sleeved mode, and the binding belts are connected with the silencer body shells in a sleeved mode. A first limiting connecting sleeve and a second limiting connecting sleeve are installed at the two ends of the silencer body shell respectively, a first filter element and a Y-shaped PVC molding pipe are installed at the two ends of the first limiting connecting sleeve respectively, and a second filter element is installed at the other end of the second limiting connecting sleeve. According to the utility model, the flow velocity of air can be effectively slowed down, the exhaust direction of the air is dispersed, the silencing and noise reduction effects are greatly improved, the disassembly is convenient, and the first filter element and the second filter element can be quickly maintained and replaced.

Description

Technical Field

[0001] The utility model belongs to the technical field of oxygen generator silencing, and particularly relates to an exhaust silencer for a medical oxygen generator. Background Technique

[0002] The function of a medical oxygen generator is to separate nitrogen and oxygen in the air through physical principles to produce oxygen. The efficacy of a medical oxygen generator is used for oxygen therapy and oxygen health care of various people. The high-concentration oxygen produced by it can correct physiological hypoxia and environmental hypoxia, is an auxiliary means to correct pathological hypoxia, and is also one of the important means for emergency rescue. After the medical oxygen generator separates oxygen and nitrogen in the air through a molecular sieve tank, it will export the separated pure oxygen for patients to breathe. In this process, due to the relatively large instantaneous pressure and flow rate of the air exhaust, relatively large noise is often generated, thus affecting the quality of life of patients and family members.

[0003] At present, there are some oxygen generator silencing devices on the market. For example, a patent on the Chinese Patent Network discloses an exhaust silencer for an oxygen generator, with the publication number CN108916523A. However, there are some defects and deficiencies to be improved: (1) Due to the reasons of structural design, some existing silencers are difficult to effectively slow down the air flow rate and disperse the direction of gas discharge, resulting in an unsatisfactory noise reduction effect; (2) Most of the existing silencers are of an integrated structure and are difficult to disassemble at will, which is not convenient for maintaining and replacing internal components. Therefore, in view of the above problems, it is of great significance to provide an exhaust silencer for a medical oxygen generator according to the utility model. Summary of the Utility Model

[0004] The utility model provides an exhaust silencer for a medical oxygen generator. The flow rate of air can be effectively slowed down and the direction of gas discharge can be dispersed through the flow diversion ring in the first filter element, thereby greatly improving the sound absorption and noise reduction effect; the outer shells of a pair of silencer main bodies can be bundled and fixed together through a binding band, and the outer shell of the silencer main body can be opened by untying the binding band, so as to quickly complete the disassembly work of the silencer, and thus the first filter element and the second filter element can be quickly maintained and replaced. In summary, the problems in the background technique are solved.

[0005] To solve the above technical problems, the utility model is realized through the following technical solutions:

[0006] A medical oxygen generator exhaust silencer of the utility model includes a pair of silencer main body shells. The silencer main body shells are semi-circular, with a hollow structure inside, and semi-circular openings are provided at both ends of the silencer main body shells. A pair of binding straps are sleeved on the silencer main body shells. A first limit connection sleeve and a second limit connection sleeve are respectively installed at both ends of the silencer main body shell. A first filter element and a Y-shaped PVC molded pipe are respectively installed at both ends of the first limit connection sleeve. External threads and internal threads that match each other are respectively engraved on the outer wall of one end of the second limit connection sleeve and the inner wall surface of one end of the silencer main body shell, and a second filter element is installed at the other end of the second limit connection sleeve. Cavities are provided inside both the first filter element and the second filter element;

[0007] A spring limit seat is arranged at the bottom of the cavity of the first filter element. A threaded hole is provided on the spring limit seat, and a connecting rod is installed in the threaded hole. One end of the connecting rod is provided with a large head end, and the other end of the connecting rod is provided with a threaded end that matches the threaded hole. A spring is wound around the rod body of the connecting rod. One end of the spring is provided with a flow splitting ring. The flow splitting ring is circular, a through hole is provided at its center, and a plurality of flow splitting holes are provided on the surface of the flow splitting ring.

[0008] Furthermore, a limit protrusion and a card slot are respectively arranged at the top and bottom end faces of the silencer main body shell. The limit protrusion and the card slot are both rectangular, and their lengths and widths are correspondingly equal.

[0009] Furthermore, a plurality of first reinforcing ribs are fixedly connected to the outer wall of the silencer main body shell. The first reinforcing ribs are arc-shaped and are linearly distributed at equal intervals along the length direction of the silencer main body shell. A pair of second reinforcing ribs are fixedly connected to both outer walls of the silencer main body shell. The second reinforcing ribs are arc-shaped, and the distance between each pair of the second reinforcing ribs corresponds to the width of the binding strap.

[0010] Furthermore, the first limit connection sleeve and the second limit connection sleeve are cylindrical, the end face of the opening at one end bulges outwards, and the outer diameters of the first limit connection sleeve and the second limit connection sleeve correspond to the diameters of the openings at both ends of the silencer main body shell.

[0011] Furthermore, convex blocks that match each other are respectively arranged on the outer wall of the top end of the first filter element and the inner wall of the port of the first limit connection sleeve. The outer diameter of the second filter element corresponds to the inner diameter of the second limit connection sleeve, and external threads and internal threads that match each other are respectively engraved on the outer wall of the second filter element and the inner wall surface of the second limit connection sleeve.

[0012] Furthermore, the aperture of the through hole corresponds to the rod diameter of the connecting rod, and the flow splitting holes are arranged in an annular array with the through hole as the center.

[0013] The utility model has the following beneficial effects compared with the prior art:

[0014] (1) When a medical oxygen generator exhaust silencer in the utility model is in use, the flow rate of air can be effectively slowed down through the flow splitting ring in the first filter element, and the direction of gas discharge can be dispersed, so that the effect of noise reduction can be greatly improved;

[0015] (2) When a medical oxygen generator exhaust silencer in the utility model is in use, a pair of silencer main body shells can be bundled and fixed together through the binding belt, and the silencer main body shells can be opened by untying the binding belt, so as to quickly complete the disassembly work of the silencer, and thus the first filter element and the second filter element can be quickly maintained and replaced.

[0016] Of course, it is not necessary for any product implementing the utility model to achieve all the above-mentioned advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model, and those of ordinary skill in the art can also obtain other drawings based on these drawings without creative efforts.

[0018] Figure 1 It is a schematic structural diagram of a medical oxygen generator exhaust silencer of the utility model;

[0019] Figure 2 It is a cross-sectional view of the internal structure of a medical oxygen generator exhaust silencer of the utility model;

[0020] Figure 3 It is an exploded view of the assembly structure of a medical oxygen generator exhaust silencer of the utility model;

[0021] Figure 4 It is a schematic structural diagram of the silencer main body shell in the utility model;

[0022] Figure 5 It is an exploded view of the assembly structure of the first filter element in the utility model;

[0023] Figure 6 It is a cross-sectional view of the internal structure of the first filter element in the utility model;

[0024] Figure 7 It is a top view of the first filter element in the utility model;

[0025] Figure 8 It is an air flow guiding diagram inside the first filter element in the utility model.

[0026] In the accompanying drawings, the list of components represented by each reference numeral is as follows:

[0027] 1. Silencer main body housing; 2. Binding strap; 3. First limit connection sleeve; 4. Second limit connection sleeve; 5. First filter element; 6. Y-shaped PVC molded pipe; 7. Second filter element; 8. Spring limit seat; 9. Threaded hole; 10. Connecting rod; 11. Big head end; 12. Threaded end; 13. Spring; 14. Shunt ring; 15. Through hole; 16. Shunt hole; 17. Limit projection; 18. Card slot; 19. First reinforcing rib; 20. Second reinforcing rib; 21. Protrusion. Detailed implementation manners

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0029] In the description of the present utility model, it should be understood that the terms "relative", "one end", "inside", "lateral", "end", "both ends", "both sides", "front", "one end face", "the other end face", etc. indicating the orientation or positional relationship are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0030] Please refer to Figure 1-8As shown in the figure, an exhaust muffler for a medical oxygen generator of the present utility model includes a pair of muffler main body shells 1. The muffler main body shell 1 is semi-circular, with a hollow structure inside, and semi-circular openings are provided at both ends of the muffler main body shell 1. A pair of binding straps 2 are sleeved on the muffler main body shell 1. The pair of muffler main body shells 1 can be bundled and fixed together through the binding straps 2. When it is necessary to maintain and replace the components inside the muffler main body shell 1, only need to untie the binding straps 2 and open the muffler main body shell 1 to quickly complete the disassembly work of the muffler. A first limit connection sleeve 3 and a second limit connection sleeve 4 are respectively installed at both ends of the muffler main body shell 1. A first filter element 5 and a Y-shaped PVC molded pipe 6 are respectively installed at both ends of the first limit connection sleeve 3. The Y-shaped PVC molded pipe 6 is Y-shaped and can be respectively connected to the air outlets of the left and right molecular sieve tanks. External threads and internal threads that match each other are respectively engraved on the outer wall of one end of the second limit connection sleeve 4 and the inner wall surface of one end of the muffler main body shell 1, and a second filter element 7 is installed at the other end of the second limit connection sleeve 4. The second limit connection sleeve 4 can be fixed at one end of the muffler main body shell 1 by means of threaded connection. Cavities are provided inside both the first filter element 5 and the second filter element 7. Both the first filter element 5 and the second filter element 7 are existing products, and tiny air holes are evenly distributed on their surfaces. When gas enters the first filter element 5 and the second filter element 7, the internal filter medium can effectively remove particles, impurities, microorganisms, etc. in the gas to play a filtering role. The second filter element 7 is connected to the exhaust pipe, and the noise-reduced and muffled pure oxygen can be led out through the exhaust pipe and supplied to the patient for breathing;

[0031] A spring limit seat 8 is arranged at the bottom of the cavity of the first filter element 5. A threaded hole 9 is provided on the spring limit seat 8, and a connecting rod 10 is installed in the threaded hole 9. One end of the connecting rod 10 is provided with a large head end 11, and the other end of the connecting rod 10 is provided with a threaded end 12 that matches the threaded hole 9. The connecting rod 10 can be fixed on the spring limit seat 8 by means of threaded connection. A spring 13 is wound around the rod body of the connecting rod 10. One end of the spring 13 is provided with a shunt ring 14. The shunt ring 14 is circular, a through hole 15 is provided at its center, and a number of shunt holes 16 are provided on the surface of the shunt ring 14.

[0032] Among them, a limit protrusion 17 and a card slot 18 are respectively arranged at the top and bottom end faces of the muffler main body shell 1. Both the limit protrusion 17 and the card slot 18 are rectangular, and their lengths and widths are correspondingly equal. The limit protrusion 17 on one muffler main body shell 1 can be aligned and inserted into the card slot 18 on the other muffler main body shell 1. At this time, the pair of muffler main body shells 1 can be spliced together through the mutual cooperation between the limit protrusion 17 and the card slot 18 to form a complete cylinder.

[0033] Among them, a plurality of first reinforcing ribs 19 are fixedly connected to the outer wall of the muffler main body housing 1. The first reinforcing ribs 19 are arc-shaped and are linearly distributed at equal intervals along the length direction of the muffler main body housing 1. The muffler main body housing 1 can be reinforced through the first reinforcing ribs 19, so as to improve the hardness of the muffler main body housing 1, thereby preventing the muffler main body housing 1 from being damaged when subjected to external force collision. A pair of second reinforcing ribs 20 are fixedly connected to the outer walls on both sides of the muffler main body housing 1. The second reinforcing ribs 20 are arc-shaped, and the distance between each pair of second reinforcing ribs 20 corresponds to the width of the binding band 2. The muffler main body housing 1 can also be reinforced through the second reinforcing ribs 20, and the binding band 2 can be limited through the second reinforcing ribs 20 to prevent the position of the binding band 2 from shifting and affecting the fixing effect of the muffler main body housing 1.

[0034] Among them, the first limiting connection sleeve 3 and the second limiting connection sleeve 4 are tubular, and the end face at the open end of one end protrudes outward. The outer diameters of the first limiting connection sleeve 3 and the second limiting connection sleeve 4 correspond to the diameters of the openings at both ends of the muffler main body housing 1. The first limiting connection sleeve 3 and the second limiting connection sleeve 4 can be attached to the inner walls of the openings of the muffler main body housing 1. The first limiting connection sleeve 3 can pass through the opening at one end of the muffler main body housing 1 and be fixedly connected to the opening at one end of the muffler main body housing 1 through the protrusion at the end face for fixation.

[0035] Among them, convex blocks 21 that cooperate with each other are provided on the outer wall of the top end of the first filter element 5 and the inner wall of the port of the first limiting connection sleeve 3. The first filter element 5 can pass through the first limiting connection sleeve 3 and be fixedly connected to the inside of the first limiting connection sleeve 3 through the convex blocks 21. The outer diameter of the second filter element 7 corresponds to the inner diameter of the second limiting connection sleeve 4, and external threads and internal threads that cooperate with each other are engraved on the outer wall of the second filter element 7 and the inner wall of the second limiting connection sleeve 4. The second filter element 7 can be fixedly connected to the second limiting connection sleeve 4 by means of threaded connection.

[0036] Among them, the aperture of the through hole 15 corresponds to the rod diameter of the connecting rod 10. The diversion holes 16 are annularly arranged around the through hole 15. When the gas enters the first limiting connection sleeve 3 through the Y-shaped PVC molded pipe 6, a part of the air flow will enter the cavity of the first filter element 5 through the gap between the diversion ring 14 and the first limiting connection sleeve 3, while the other part of the air flow will pass through the respective diversion holes 16 on the surface of the diversion ring 14 and enter the cavity of the first filter element 5. At this time, the two air flows will contact and collide with each other and cancel each other out, thereby effectively slowing down the air flow rate to play a role in noise reduction. Meanwhile, the direction of gas discharge can be dispersed through the plurality of diversion holes 16 to play a role in diversion, thereby further improving the noise reduction effect.

[0037] The circuits, electronic components, and chip modules involved in the present utility model are all prior arts, which can be fully realized by those skilled in the art without further elaboration. The content protected by the present utility model does not involve improvements to software and methods either.

[0038] The standard parts used in the application documents can all be purchased from the market. All components in this application document can be customized according to the descriptions in the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts, and equipment all adopt conventional models in the prior art. The electrical components mentioned in this article are all electrically connected to the external main controller and the 220V mains power supply, and the main controller can be a conventional known device such as the LED lamp body for control.

[0039] The working principle of the present utility model is:

[0040] When the present utility model is in use, it can be respectively connected to the air outlets of the left and right molecular sieve tanks through the Y-shaped PVC molding pipe 6, so as to introduce the pure oxygen separated by the molecular sieve tanks into the first limit connection sleeve 3. After the gas enters the first limit connection sleeve 3, a part of the air flow will enter the cavity of the first filter element 5 through the gap between the shunt ring 14 and the first limit connection sleeve 3, while another part of the air flow will pass through each shunt hole 16 on the surface of the shunt ring 14 and enter the cavity of the first filter element 5. At this time, the two air flows will contact and collide with each other and cancel each other out, so as to effectively slow down the air flow rate and play a role in noise reduction and noise elimination. At the same time, through a plurality of shunt holes 16, the direction of gas discharge can be dispersed to play a role in shunting, thereby further improving the noise reduction effect. The pure oxygen gas after noise reduction and noise elimination can be led out through the second filter element 7 and the exhaust pipe for the patient to breathe. The pair of muffler main body shells 1 can be bundled and fixed together by the binding belt 2. When it is necessary to maintain and replace the components inside the muffler main body shell 1, only need to untie the binding belt 2 and open the muffler main body shell 1 to quickly complete the disassembly work of the muffler. Then, the first limit connection sleeve 3 and the second limit connection sleeve 4 are respectively removed from the openings at both ends of the muffler main body shell 1, and then the first filter element 5 and the second filter element 7 are respectively taken out from the first limit connection sleeve 3 and the second limit connection sleeve 4, so as to quickly maintain and replace the first filter element 5 and the second filter element 7.

[0041] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific embodiments described. Obviously, according to the content of this specification, many modifications and variations can be made. These embodiments are selected and specifically described in this specification to better explain the principle and practical application of the present utility model, so that those skilled in the art can well understand and utilize the present utility model. The present utility model is only limited by the claims and their full scope and equivalents.

Claims

1. A medical oxygen generator exhaust muffler, characterized in that, It includes a pair of silencer main body housings, the silencer main body housings are semi-circular, with a hollow structure inside, and semi-circular openings are provided at both ends of the silencer main body housings. A pair of binding straps are sleeved on the silencer main body housings. A first limit connection sleeve and a second limit connection sleeve are respectively installed at both ends of the silencer main body housing. A first filter element and a Y-shaped PVC molded pipe are respectively installed at both ends of the first limit connection sleeve. External threads and internal threads that match each other are respectively engraved on the outer wall of one end of the second limit connection sleeve and the inner wall surface of one end of the silencer main body housing, and a second filter element is installed at the other end of the second limit connection sleeve. Cavities are provided inside both the first filter element and the second filter element; A spring limit seat is arranged at the bottom of the cavity of the first filter element. A threaded hole is provided in the spring limit seat, and a connecting rod is installed in the threaded hole. One end of the connecting rod is provided with a large head end, and the other end of the connecting rod is provided with a threaded end that matches the threaded hole. A spring is wound around the rod body of the connecting rod. One end of the spring is provided with a flow dividing ring. The flow dividing ring is circular, a through hole is provided at its center, and a plurality of flow dividing holes are provided on the surface of the flow dividing ring.

2. The exhaust muffler of a medical oxygen generator according to claim 1, characterized in that, Limit protrusions and clamping grooves are respectively arranged at the top and bottom end faces of the silencer main body housing. The limit protrusions and the clamping grooves are both rectangular, and their lengths and widths correspond equally.

3. The exhaust muffler of a medical oxygen generator according to claim 1, characterized in that, A plurality of first reinforcing ribs are fixedly connected to the outer wall of the silencer main body housing. The first reinforcing ribs are arc-shaped and are linearly distributed at equal intervals along the length direction of the silencer main body housing. A pair of second reinforcing ribs are fixedly connected to both outer walls of the silencer main body housing. The second reinforcing ribs are arc-shaped, and the distance between each pair of the second reinforcing ribs corresponds equally to the width of the binding strap.

4. The exhaust muffler of a medical oxygen generator according to claim 1, characterized in that, The first limit connection sleeve and the second limit connection sleeve are cylindrical, and the end face of the opening at one end bulges outwards, and the outer diameters of the first limit connection sleeve and the second limit connection sleeve correspond equally to the diameters of the openings at both ends of the silencer main body housing.

5. The exhaust muffler of a medical oxygen generator according to claim 1, characterized in that, Convex blocks that match each other are respectively arranged on the outer wall of the top end of the first filter element and the inner wall of the port of the first limit connection sleeve. The outer diameter of the second filter element corresponds equally to the inner diameter of the second limit connection sleeve, and external threads and internal threads that match each other are respectively engraved on the outer wall of the second filter element and the inner wall surface of the second limit connection sleeve.

6. The exhaust muffler of a medical oxygen generator according to claim 1, characterized in that, The aperture of the through hole corresponds equally to the rod diameter of the connecting rod, and the flow dividing holes are arranged in a circular array centered on the through hole.

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