Gas path sealing structure of oxygen candle chemical oxygen generator

Abstract

The utility model relates to the field of gas path sealing and pressure relief, in particular to a gas path sealing structure of an oxygen candle chemical oxygen generator, which comprises a shell, a V-shaped spine section is arranged on the shell, a gas gap is arranged at the center of the spine section, and a mounting seat is arranged on the shell and positioned above the spine section; the sealing film covers the inner side of the shell and is positioned below the spine section; the air outlet base is fixed to the mounting base and located above the spine section, and an air outlet through hole is formed in the center of the air outlet base; the shell is detachably connected to the air outlet base; the air outlet mechanism is detachably connected in the shell; due to the adoption of the air outlet mechanism and the pressure relief mechanism, the problem of pressure relief in different stages is effectively solved, so that ultrahigh pressure can be discharged in time through the pressure relief mechanism when inside reaches ultrahigh pressure, and low pressure can be discharged through the air outlet mechanism when inside reaches low pressure, and the pressure relief efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of gas path sealing and pressure relief, specifically to a gas path sealing structure for an oxygen candle chemical oxygen generator. Background Technology

[0002] Before the reaction, the gas path of the oxygen candle chemical oxygen generator must be absolutely sealed to ensure that the properties of the chemical materials inside the device remain unchanged. During the reaction, the oxygen candle chemical oxygen generator must automatically open to allow the gas flow to escape smoothly; when the internal pressure of the oxygen candle chemical oxygen generator becomes too high, it must automatically depressurize to allow the overpressure gas flow to escape smoothly. In addition, the gas path structure of the oxygen candle chemical oxygen generator must ensure high reliability while having good sealing performance to extend the warranty period of the oxygen generator; it must also meet the requirements of simple process, compact structure, and convenient use. Existing gas path sealing and depressurization structures cannot meet the above requirements. Utility Model Content

[0003] This application provides a gas path sealing structure for an oxygen candle chemical oxygen generator, which meets the design requirements of automatic opening during use, automatic pressure relief in case of overpressure, and long-term sealed storage, while also taking into account the characteristics of reliable performance, simple process, compact structure, and convenient use.

[0004] The technical problem solved by this utility model can be achieved by the following technical solution:

[0005] A gas path sealing structure for an oxygen candle chemical oxygen generator includes:

[0006] A housing having spiked sections with air slits, and a mounting base having a portion on the housing above the spiked sections;

[0007] A sealing membrane that covers the inside of the housing and is located below the spiked section;

[0008] An air outlet base is fixed on the mounting base and is located above the spike section, with an air outlet hole at the center of the air outlet base.

[0009] The outer casing is detachably connected to the air outlet base;

[0010] An exhaust mechanism, which is detachably connected to the housing;

[0011] An air outlet is fixed to the outer casing and communicates with the inside of the outer casing;

[0012] A pressure relief mechanism is fixed to the housing and communicates with the inside of the housing.

[0013] Furthermore, the upper surface of the air outlet base has a channel seat, the center of the channel seat has a channel hole, the channel hole is coaxial with the air outlet hole, the air outlet mechanism is detachably connected inside the channel seat, and the bottom end of the air outlet mechanism covers the air outlet hole, and the outer shell is detachably connected to the outer circumferential surface of the channel seat.

[0014] Furthermore, the air outlet mechanism includes an air outlet spring and an air outlet valve core. The air outlet valve core is disposed in the channel seat, and the bottom end of the air outlet valve core covers the air outlet through hole. An air outlet spring is disposed between the air outlet valve core and the upper inner surface of the outer shell.

[0015] Furthermore, a pressure ring is formed along the upper edge of the air outlet hole, and a connecting hole is formed on the lower surface of the air outlet valve core. An air outlet valve plate is detachably connected in the connecting hole. The lower surface of the air outlet valve plate is in contact with the upper surface of the pressure ring, and the outer diameter of the pressure ring is smaller than the outer diameter of the air outlet valve plate.

[0016] Furthermore, a sealing groove is formed on the outer circumferential surface of the channel seat, and a sealing ring is embedded in the sealing groove. The outer circumferential surface of the sealing ring is in contact with the inner circumferential surface of the outer shell.

[0017] Furthermore, the outer circumferential surface of the outer shell has at least one pair of pin holes radially, and the channel seat has a pair of pin grooves. Elastic pins are inserted into the pin holes respectively, and one side of the elastic pin is located in the pin groove.

[0018] Furthermore, the pressure relief mechanism includes: a pressure relief base, a pressure relief valve cover, a pressure relief spring, and a pressure relief valve core. The pressure relief valve cover has a pressure relief hole at its top, the pressure relief base has a pressure relief channel inside, the housing has a pressure relief mounting hole, the pressure relief base is fixed to the pressure relief mounting hole, the pressure relief valve cover is detachably connected to the outer circumferential surface of the pressure relief base, the pressure relief spring is detachably connected between the pressure relief valve cover and the pressure relief base, the lower end of the pressure relief spring is detachably connected to the pressure relief valve core, and the bottom end of the pressure relief valve core covers the pressure relief channel.

[0019] Furthermore, a pressure relief valve plate is detachably connected to the lower end of the pressure relief valve core, and an annular protrusion is opened at the top of the pressure relief channel of the pressure relief base, with the pressure relief valve plate covering the top of the annular protrusion.

[0020] Furthermore, the outer circumferential surface of the pressure relief base has an insert groove, and a damping ring is detachably connected in the insert groove. The damping ring is in contact with the lower end of the inner surface of the pressure relief valve cover and is subjected to pressure.

[0021] The spiked section has a V-shaped structure, and the air slit is located at the center of the spiked section.

[0022] The beneficial effects of this utility model are: by adopting an air outlet mechanism and a pressure relief mechanism, the pressure relief problem at different stages is effectively solved, thereby enabling timely discharge through the pressure relief mechanism when the internal pressure reaches ultra-high pressure and discharge through the air outlet mechanism when the pressure is low, thus improving the pressure relief efficiency.

[0023] Because of the use of a sealing membrane, the problem of repeated fluctuations in internal pressure at the minimum pressure when the air outlet spring is touched is effectively solved, which causes the air outlet mechanism to be triggered. Thus, by setting the puncture pressure of the sealing membrane, the lower limit of the pressure at which the air outlet mechanism is triggered can be limited.

[0024] By employing vent valve plates and pressure relief valve plates, along with pressure rings and annular protrusions, the problem of poor sealing performance under pressure is effectively solved, thereby improving the sealing performance.

[0025] The use of elastic pins effectively solves the problem of difficult disassembly and assembly of the outer casing and channel seat, thus making it easier to open the outer casing and facilitate the maintenance and replacement of the air outlet mechanism. Attached Figure Description

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] Figure 1 This is a schematic diagram of the structure of this utility model.

[0028] In the diagram: 1-Housing; 2-Spike section; 3-Sealing membrane; 4-Air outlet base; 5-Outer shell; 6-Air outlet nozzle; 7-Channel seat; 8-Air outlet spring; 9-Air outlet valve core; 10-Pressure ring; 11-Air outlet valve plate; 12-Sealing ring; 13-Elastic pin; 14-Pressure relief base; 15-Pressure relief valve cover; 16-Pressure relief spring; 17-Pressure relief valve core; 18-Pressure relief valve plate; 19-Annular protrusion; 20-Vibration damping ring. Detailed Implementation

[0029] Example 1:

[0030] Reference Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention, a gas path sealing structure for an oxygen candle chemical oxygen generator, characterized in that it includes:

[0031] The housing 1 has a spiked section 2 with an air slit, and a mounting seat is provided on the housing 1 above the spiked section 2.

[0032] A sealing membrane 3 covers the inside of the housing 1 and is located below the spike section 2;

[0033] The air outlet base 4 is fixed on the mounting base and is located above the spike section 2. The air outlet base 4 has an air outlet hole in the center.

[0034] The outer casing 5 is detachably connected to the air outlet base 4;

[0035] An exhaust mechanism is detachably connected to the housing 5;

[0036] Air outlet 6, which is fixed to the outer shell 5 and communicates with the inside of the outer shell 5;

[0037] A pressure relief mechanism is fixed to the housing 1 and communicates with the inside of the housing 1.

[0038] In actual use: the vent base 4 and the pressure relief mechanism are welded to the mounting base of the housing 1. The sealing membrane 3 is compressed and pressed against the spike section 2, thus causing damage. Gas enters through the damaged part of the sealing membrane 3, and then enters the vent hole through the air gap in the spike section 2. Then, the vent mechanism is triggered to enter the housing 5 and is discharged through the vent nozzle 6. When the internal pressure of the housing 1 is too high and the vent mechanism cannot meet the timely pressure relief, the pressure relief mechanism is triggered, which can quickly relieve pressure.

[0039] In this embodiment, multiple air outlets 6 can be provided to improve air output efficiency.

[0040] In this embodiment, the sealing membrane 3 is set with a puncture pressure, and the air outlet mechanism is set with a low opening pressure. The sealing membrane can only be punctured after reaching a certain pressure.

[0041] Example 2:

[0042] Reference Figure 1 The difference in this embodiment is that: the upper surface of the air outlet base 4 has a channel seat 7, the center of the channel seat 7 has a channel hole, the channel hole is coaxial with the air outlet hole, the air outlet mechanism is detachably connected to the channel seat 7, and the bottom end of the air outlet mechanism covers the air outlet hole, and the outer shell 5 is detachably connected to the outer circumferential surface of the channel seat 7.

[0043] In actual use: The channel hole can improve the stability of the connection with the outer shell 5, and facilitate the installation of the air outlet mechanism. At the same time, when the air outlet mechanism covers the air outlet hole, the air outlet mechanism will not have excessive displacement when subjected to pressure, which would cause the problem of not being able to reset.

[0044] Example 3:

[0045] Reference Figure 1 The difference in this embodiment is that the air outlet mechanism includes an air outlet spring 8 and an air outlet valve core 9. The air outlet valve core 9 is disposed in the channel seat 7, and the bottom end of the air outlet valve core 9 covers the air outlet through hole. The air outlet spring 8 is disposed between the air outlet valve core 9 and the upper inner surface of the outer shell 5.

[0046] In actual use: Gas pushes the outlet valve core 9, which in turn pushes the outlet spring 8, compressing the spring. Simultaneously, influenced by air pressure, the gas pushes the outlet valve core 9 to open the outlet hole. Gas is discharged through the edge of the outlet valve core 9 and enters the housing 5, then exits through the outlet nozzle 6. When the air pressure decreases, the outlet valve core 9 returns to its original position under the action of the compressed outlet spring 8, continuing to cover the outlet hole. By changing the strength of the outlet spring 8, the gas can be discharged when the preset pressure is reached inside the housing 1.

[0047] Example 4:

[0048] Reference Figure 1 The difference in this embodiment is that: a pressure ring 10 is opened on the upper edge of the air outlet hole, a connecting hole is opened on the lower surface of the air outlet valve core 9, an air outlet valve plate 11 is detachably connected in the connecting hole, the lower surface of the air outlet valve plate 11 is in contact with the upper surface of the pressure ring 10, and the outer diameter of the pressure ring 10 is smaller than the outer diameter of the air outlet valve plate 11.

[0049] In actual use: the gas pushes the outlet valve plate 11, and then the outlet valve core 9 pushes the outlet spring 8, causing the outlet valve plate 11 to separate from the pressure ring 10, forming an air passage, and then the gas is discharged.

[0050] In this embodiment, the vent valve plate 11 is made of rubber. The rubber material can adapt to deformation and better seal on the pressure ring 10.

[0051] Example 5:

[0052] Reference Figure 1 The difference in this embodiment is that: a sealing groove is opened on the outer circumferential surface of the channel seat 7, and a sealing ring 12 is embedded in the sealing groove, and the outer circumferential surface of the sealing ring 12 is in contact with the inner circumferential surface of the outer shell 5.

[0053] In actual use: the sealing ring 12 can seal the space between the outer shell 5 and the channel seat 7, so that there will be no gas leakage.

[0054] Example 6:

[0055] Reference Figure 1 The difference in this embodiment is that: at least one pair of pin holes are radially opened on the outer circumferential surface of the outer shell 5, and a pair of pin grooves are opened on the channel seat 7. Elastic pins 13 are inserted into the pin holes respectively, and one side of the elastic pin 13 is located in the pin groove.

[0056] In actual use: the elastic pin 13 facilitates the connection between the outer shell 5 and the channel seat 7, and makes it easy to replace and adjust the air outlet mechanism between the outer shell 5 and the channel seat 7;

[0057] During operation, the elastic pin 13 is inserted from one end of the pin hole side of the housing 5, then passes through the pin groove, and extends out through the other end of the pin hole to complete the limiting connection between the housing 5 and the channel seat 7.

[0058] Example 7:

[0059] Reference Figure 1 The difference in this embodiment is that the pressure relief mechanism includes: a pressure relief base 14, a pressure relief valve cover 15, a pressure relief spring 16, and a pressure relief valve core 17. The pressure relief valve cover 15 has a pressure relief hole at its top, the pressure relief base 14 has a pressure relief channel inside, the housing 1 has a pressure relief mounting hole, the pressure relief base 14 is fixed on the pressure relief mounting hole, the pressure relief valve cover 15 is detachably connected to the outer circumferential surface of the pressure relief base 14, the pressure relief spring 16 is detachably connected between the pressure relief valve cover 15 and the pressure relief base 14, the lower end of the pressure relief spring 16 is detachably connected to the pressure relief valve core 17, and the bottom end of the pressure relief valve core 17 covers the pressure relief channel.

[0060] In actual use: When the oxygen candle chemical oxygen generator is overpressurized during operation, the gas pushes the pressure relief valve core 17 to move upward and compresses the pressure relief spring 16. At this time, the pressure relief channel opens, the gas enters the pressure relief base 14, and is discharged through the pressure relief hole in the pressure relief valve cover 15, so that it can respond quickly and the overpressurized gas flow can be discharged in time.

[0061] Example 8:

[0062] Reference Figure 1 The difference in this embodiment is that: the lower end of the pressure relief valve core 17 is detachably connected to a pressure relief valve plate 18, the top of the pressure relief channel of the pressure relief base 14 is provided with a pressure relief valve plate 18, and the pressure relief valve plate 18 covers the top of the annular protrusion 19.

[0063] In actual use: the gas pushes the pressure relief valve plate 18, and then the pressure relief valve core 17 pushes the pressure relief spring 16, causing the pressure relief valve plate 18 to separate from the pressure relief valve plate 18, forming an air passage, and then the gas is discharged in an emergency.

[0064] In this embodiment, the pressure relief valve plate 18 is made of rubber. The rubber material can adapt to deformation and better seal on the annular protrusion 19.

[0065] Example 9:

[0066] Reference Figure 1 The difference in this embodiment is that: the outer circumferential surface of the pressure relief base 14 has an insert groove, and a damping ring 20 is detachably connected in the insert groove. The damping ring 20 is in contact with the lower end of the inner surface of the pressure relief valve cover 15 and is under pressure.

[0067] In actual use: A damping ring 20 is provided between the pressure relief valve cover 15 and the pressure relief base 14 to prevent the valve cover from loosening and to prevent the pressure relief mechanism from failing.

[0068] Example 10:

[0069] Reference Figure 1 The difference in this embodiment is that the spiked segment 2 has a V-shaped structure and the air slit is located at the center of the spiked segment 2.

[0070] In actual use: the sealing membrane 3 is passively pressed against the spike section 2, and is punctured by the bottom end of the spike section 2, allowing gas to enter and release pressure through the air gap.

[0071] The air gap is located at the center of the spiked section 2, specifically at the sharpest point at the bottom of the spiked section 2. This prevents the sealing membrane 3 from covering the air gap and causing a failure to release pressure when it breaks.

[0072] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention, and all such changes are within the protection scope of the technology.

Claims

1. A gas path sealing structure for an oxygen candle chemical oxygen generator, characterized in that, include: A housing (1) has a spiked section (2) on it, and an air slit is provided on the spiked section (2). A mounting seat is provided on the housing (1) above the spiked section (2). A sealing film (3) covers the inside of the housing (1) and is located below the spiked section (2); The air outlet base (4) is fixed on the mounting base and is located above the spike section (2). An air outlet hole is opened in the center of the air outlet base (4). The outer casing (5) is detachably connected to the air outlet base (4); An exhaust mechanism, which is detachably connected to the housing (5); An air outlet (6) is fixed on the outer shell (5) and communicates with the inside of the outer shell (5); The pressure relief mechanism is fixed on the housing (1) and communicates with the inside of the housing (1).

2. The gas path sealing structure of an oxygen candle chemical oxygen generator according to claim 1, characterized in that, The upper surface of the air outlet base (4) has a channel seat (7), and the center of the channel seat (7) has a channel hole. The channel hole is coaxial with the air outlet hole. The air outlet mechanism is detachably connected inside the channel seat (7), and the bottom end of the air outlet mechanism covers the air outlet hole. The outer shell (5) is detachably connected to the outer circumferential surface of the channel seat (7).

3. The gas path sealing structure of an oxygen candle chemical oxygen generator according to claim 2, characterized in that, The air outlet mechanism includes an air outlet spring (8) and an air outlet valve core (9). The air outlet valve core (9) is located inside the channel seat (7), and the bottom end of the air outlet valve core (9) covers the air outlet through hole. The air outlet spring (8) is provided between the air outlet valve core (9) and the upper inner surface of the outer shell (5).

4. The gas path sealing structure of an oxygen candle chemical oxygen generator according to claim 3, characterized in that, A pressure ring (10) is opened on the upper edge of the air outlet hole, and a connection hole is opened on the lower surface of the air outlet valve core (9). An air outlet valve plate (11) is detachably connected in the connection hole. The lower surface of the air outlet valve plate (11) is in contact with the upper surface of the pressure ring (10), and the outer diameter of the pressure ring (10) is smaller than the outer diameter of the air outlet valve plate (11).

5. The gas path sealing structure of an oxygen candle chemical oxygen generator according to claim 2, characterized in that, The outer circumferential surface of the channel seat (7) has a sealing groove, and a sealing ring (12) is embedded in the sealing groove. The outer circumferential surface of the sealing ring (12) is in contact with the inner circumferential surface of the outer shell (5).

6. The gas path sealing structure of an oxygen candle chemical oxygen generator according to claim 2, characterized in that, The outer circumferential surface of the outer shell (5) has at least one pair of pin holes, and the channel seat (7) has a pair of pin grooves. Elastic pins (13) are inserted into the pin holes respectively, and one side of the elastic pin (13) is located in the pin groove.

7. The gas path sealing structure of an oxygen candle chemical oxygen generator according to claim 1, characterized in that, The pressure relief mechanism includes: a pressure relief base (14), a pressure relief valve cover (15), a pressure relief spring (16), and a pressure relief valve core (17). The pressure relief valve cover (15) has a pressure relief hole at its top. The pressure relief base (14) has a pressure relief channel inside. The housing (1) has a pressure relief mounting hole. The pressure relief base (14) is fixed on the pressure relief mounting hole. The pressure relief valve cover (15) is detachably connected to the outer circumference of the pressure relief base (14). The pressure relief spring (16) is detachably connected between the pressure relief valve cover (15) and the pressure relief base (14). The lower end of the pressure relief spring (16) is detachably connected to the pressure relief valve core (17). The bottom end of the pressure relief valve core (17) covers the pressure relief channel.

8. The gas path sealing structure of an oxygen candle chemical oxygen generator according to claim 7, characterized in that, The pressure relief valve core (17) is detachably connected to a pressure relief valve plate (18) at its lower end. The pressure relief channel of the pressure relief base (14) has an annular protrusion (19) at its top, and the pressure relief valve plate (18) covers the top of the annular protrusion (19).

9. The gas path sealing structure of an oxygen candle chemical oxygen generator according to claim 7, characterized in that, The pressure relief base (14) has an insert groove on its outer circumference. A damping ring (20) is detachably connected in the insert groove. The damping ring (20) is in contact with the lower end of the inner surface of the pressure relief valve cover (15) and is under pressure.

10. The gas path sealing structure of an oxygen candle chemical oxygen generator according to claim 1, characterized in that, The spiked segment (2) has a V-shaped structure, and the air slit is located at the center of the spiked segment (2).

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