Gas outlet needle sealing mechanism for lighter gas outlet valve and lighter gas outlet valve

Abstract

The utility model relates to a gas outlet needle sealing mechanism for a lighter gas outlet valve and the lighter gas outlet valve. The gas outlet needle sealing mechanism comprises a valve seat, a gas outlet needle and a first sealing ring, a sliding cavity is formed in the valve seat, an opening communicated with the sliding cavity is formed in the upper end of the valve seat, and an air inlet is formed in the valve seat and located below the sliding cavity. The lower portion of the air outlet needle is axially slidably arranged in the sliding cavity, the upper end of the air outlet needle extends out of the valve seat through the opening, an air outlet channel is formed in the air outlet needle, a first air outlet communicated with the air outlet channel is formed in the upper end of the air outlet needle, and an air inlet communicated with the air outlet channel is formed in the side wall of the air outlet needle; the first sealing ring is positioned in the valve seat, when the lower end of the gas outlet needle seals the gas inlet hole, the lower portion of the gas outlet needle penetrates through the first sealing ring, and the first sealing ring abuts against the peripheral wall of the gas outlet needle for sealing so as to prevent gas from entering the gas inlet of the gas outlet needle. The first sealing ring is adopted to replace a T-shaped rubber plug, so that the defect of slow flameout caused by continuous combustion of big fire is overcome.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the lighter technical field, concretely relates to a kind of air outlet needle sealing mechanism for lighter air outlet valve and lighter air outlet valve. BACKGROUND

[0002] The valve of current lighter is all T type rubber plug structure, and the defects of this structure are as follows: when fire is adjusted, air current is big, air hole is directly opposite rubber T type rubber bottom, T type rubber plug is frozen hard and loses elasticity, so that air valve cannot be sealed instantly, leading to slow extinguishing, and slow extinguishing may occur after long time of ignition. CONTENT OF UTILITY MODEL

[0003] The utility model aims at overcoming the defects of prior art, and provides a kind of air outlet needle sealing mechanism for lighter air outlet valve and lighter air outlet valve, to solve the technical problems such as slow extinguishing of existing lighter.

[0004] To solve the above problems, the technical scheme of the utility model is as follows: a kind of air outlet needle sealing structure for lighter air outlet valve, comprising:

[0005] Valve seat, sliding cavity is formed in valve seat, opening is formed in the upper end of valve seat and communicated with sliding cavity, air inlet hole is formed in valve seat, and air inlet hole is located below sliding cavity;

[0006] Air outlet needle, the lower part of air outlet needle is axially slidably arranged in sliding cavity, and the upper end of air outlet needle extends to the outside of valve seat through opening, air outlet needle has air outlet passage in it, first air outlet is formed in the upper end of air outlet needle and communicated with air outlet passage, and air inlet is formed in the side wall of air outlet needle and communicated with air outlet passage;

[0007] First sealing ring, positioned in the inside of valve seat, when the lower end of air outlet needle seals air inlet hole, the lower part of air outlet needle passes through first sealing ring, and first sealing ring is in contact with the outer peripheral wall of air outlet needle to prevent gas from entering the air inlet of air outlet needle.

[0008] Another object of the utility model is to provide a kind of lighter air outlet valve, comprising the air outlet needle sealing structure for lighter air outlet valve described above, further comprising:

[0009] Valve body, first installation cavity is formed in the inside of valve body, valve seat is fixedly arranged in first installation cavity, and the upper part of air outlet needle extends to the outside of the upper end of valve body;

[0010] Spring, located in first installation cavity, the upper end of spring is in contact with the inner wall of the top of valve body, and the lower end of spring is in contact with the clamping table of the outer side wall of air outlet needle, in natural state, spring is in contact with clamping table, so that the lower end of air outlet needle blocks air inlet hole.

[0011] Optionally, a limiting plate is fixedly arranged inside the valve seat, a lower mounting groove is formed at the bottom end of the valve seat, the limiting plate separates the sliding cavity and the lower mounting groove, and the air inlet hole is formed in the limiting plate.

[0012] Optionally, the air valve further comprises:

[0013] a filter screen fixedly arranged in the lower mounting groove and abutting against the limiting plate at the upper portion thereof;

[0014] an air regulating sponge fixedly arranged in the lower mounting groove and abutting against the filter screen at the upper portion thereof;

[0015] a mounting shell fixedly arranged at the lower portion of the valve body, the upper portion of the mounting shell being limited in the lower mounting groove, the upper end of the mounting shell abutting against the air regulating sponge, the second air outlet being formed in the upper portion of the mounting shell, the lower portion of the mounting shell extending out of the lower end of the valve body, the mounting shell having a mounting space therein, the mounting port being formed in the lower end of the mounting shell and communicating with the mounting space, and the air suction rod being fixedly arranged in the mounting shell and extending out of the mounting shell at the lower portion thereof.

[0016] Optionally, the valve body comprises:

[0017] a barrel having an inner thread at the inner side wall of the upper portion thereof;

[0018] a screw cap fittedly arranged at the upper portion of the barrel and having an axial through hole formed at the upper end thereof, the air outlet needle passing through the through hole.

[0019] Optionally, the valve seat comprises:

[0020] an upper seat body having a second mounting cavity axially penetrating therethrough, the air outlet needle being slidably arranged in the second mounting cavity, and the upper end of the upper seat body abutting against the screw cap;

[0021] a lower seat body having an upper mounting groove formed at the upper end thereof and a lower mounting groove formed at the lower end thereof, the limiting plate being fixedly arranged in the lower seat body, and the upper mounting groove and the lower mounting groove being separated by the limiting plate, and the lower portion of the upper seat body being press-fitted in the upper mounting groove.

[0022] Optionally, a radial clamping seat is arranged at the side wall of the mounting shell, the radial clamping seat being located in the barrel, the lower end of the barrel having a radial limiting ring plate formed at the inner wall thereof, and the radial clamping seat being positioned by being clamped with the radial limiting ring plate.

[0023] Optionally, a second sealing ring is arranged between the radial clamping seat and the radial limiting ring plate.

[0024] Optionally, the outer peripheral wall of the valve seat has a limiting groove, the third sealing ring is arranged in the limiting groove, and the outer wall of the valve seat and the inner wall of the valve body are sealed by the third sealing ring.

[0025] Optionally, the air regulating sponge is a 2.6 sponge.

[0026] Optionally, the air suction rod is a pen core suction rod.

[0027] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0028] This invention replaces the T-shaped rubber stopper with a first sealing ring, solving the problem of slow extinguishing of a large flame. It uses a 2.6-inch small sponge, a filter screen, and a pen refill suction rod to solve the problem of flame shrinkage. It is suitable for products with higher requirements than disposable products and has a lower cost than metal copper vent valves, achieving a higher cost-performance ratio. Attached Figure Description

[0029] Figure 1 This is a cross-sectional view of the vent valve in the embodiment.

[0030] Reference numerals: 1. Valve seat; 11. Limiting groove; 12. Limiting plate; 121. Air inlet; 13. Upper seat; 131. Second mounting cavity; 14. Lower seat; 141. Upper mounting groove; 142. Lower mounting groove; 2. Air outlet needle; 21. First sealing ring; 22. Air outlet channel; 23. First air outlet; 24. Air inlet; 25. Mounting plate; 3. Valve body; 31. First mounting cavity; 32. Cylinder; 321. Internal thread; 322. Radial limiting ring plate; 33. Nut; 34. Second sealing ring; 35. Third sealing ring; 4. Spring; 5. Filter screen; 6. Air regulating sponge; 7. Mounting shell; 71. Second air outlet; 72. Radial mounting plate; 8. Suction rod; 9. Annular partition; 91. Fourth sealing ring. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0032] Example 1: As Figure 1 As shown, this embodiment provides a sealing structure for the gas outlet valve of a lighter, including a valve seat 1, a gas outlet needle 2, and a first sealing ring 21. The valve seat 1 has a sliding cavity, and the upper end of the valve seat 1 has an opening communicating with the sliding cavity. An air inlet 121 is opened on the valve seat 1, and the air inlet 121 is located below the sliding cavity. The lower part of the gas outlet needle 2 is axially slidably disposed in the sliding cavity, and the upper end of the gas outlet needle 2 extends out of the valve seat 1 through the opening. The gas outlet needle 2 has a gas outlet channel 22, and the upper end of the gas outlet needle 2 has a first gas outlet 23 communicating with the gas outlet channel 22. An air inlet 24 communicating with the gas outlet channel 22 is opened on the side wall of the gas outlet needle 2. The first sealing ring 21 is positioned inside the valve seat 1. When the lower end of the gas outlet needle 2 closes the air inlet 121, the lower part of the gas outlet needle 2 passes through the first sealing ring 21, and the first sealing ring 21 abuts against the outer peripheral wall of the gas outlet needle 2 to seal and prevent gas from entering the air inlet 24 of the gas outlet needle 2.

[0033] With the above settings, this embodiment eliminates the original T-shaped rubber stopper and makes the bottom of the vent needle 2 into an integrally sealed structure. The first sealing ring 21 is used to contact and squeeze the side wall of the vent needle 2 to achieve sealing. The valve is opened and vented when the vent needle 2 is lifted. This avoids the defects of the central airflow concentrating on the first sealing ring 21 and reduces the side effect of the first sealing ring 21 cooling down and failing after the airflow is dispersed. The state of the first sealing ring 21 hardening due to freezing is much better than that of the T-shaped rubber stopper. In the case of long ignition and combustion time, the flame is extinguished faster, which solves the problem of slow flameout after continuous ignition.

[0034] Example 2: As Figure 1 As shown, this embodiment provides a lighter gas valve, including a gas needle sealing structure for a lighter gas valve as described in Embodiment 1, and also includes a valve body 3 and a spring 4; the valve body 3 has a first mounting cavity 31 inside, the valve seat 1 is fixedly disposed in the first mounting cavity 31, and the upper part of the gas needle 2 extends to the outside of the upper end of the valve body 3; the spring 4 is located in the first mounting cavity 31, the upper end of the spring 4 abuts against the inner wall of the top of the valve body 3, and the lower end of the spring 4 abuts against the retaining plate 25 on the outer wall of the gas needle 2. In the natural state, the spring 4 abuts against the retaining plate 25, causing the lower end of the gas needle 2 to block the air inlet 121. With this configuration, the original T-shaped rubber plug is eliminated in this embodiment. The bottom of the vent needle 2 is made into an integral closed structure. The first sealing ring 21 is used to contact and squeeze the side wall of the vent needle 2 to achieve sealing. The valve is opened and vented when the vent needle 2 is lifted. This avoids the defects of the central airflow concentrating on the first sealing ring 21 and reduces the side effect of the first sealing ring 21 cooling down and failing after the airflow is dispersed. The state of the first sealing ring 21 hardening after freezing is much better than that of the T-shaped rubber plug. When the ignition and combustion time is long, the flame is extinguished faster, which solves the problem of slow flameout after continuous ignition.

[0035] The standard for flameout time is: for an open flame height of 100 mm and continuous burning for 2 minutes, the flameout time should not exceed 3 seconds; for a flame of the same size and continuous burning for 20 seconds, the flameout time should be within 2 seconds. This is the ISO9004 general standard, which can basically be achieved by metal-copper exhaust valves. However, the existing disposable exhaust valves only require a 60 mm open flame and a continuous burning time of 20 seconds, resulting in a flameout time exceeding 3 seconds, which is far from meeting the requirements of ISO9004. Therefore, improvements and optimizations are needed.

[0036] In a lighter gas valve according to this embodiment, a limiting plate 12 is fixedly installed inside the valve seat 1, and a lower mounting groove 142 is opened at the bottom of the valve seat 1. The limiting plate 12 separates the sliding cavity from the lower mounting groove 142, and an air inlet 121 is opened on the limiting plate 12. This configuration is simple in structure and serves to limit the gas outlet needle 2.

[0037] The gas outlet valve of the lighter of the embodiment further comprises a filter screen 5, an air regulating sponge 6, a mounting shell 7 and an air suction rod 8. The filter screen 5 is fixed in the lower mounting groove 142, and the upper portion of the filter screen 5 is attached to the limiting plate 12. The air regulating sponge 6 is fixed in the lower mounting groove 142, and the upper portion of the air regulating sponge 6 is attached to the filter screen 5. The mounting shell 7 is fixedly mounted at the lower portion of the valve body 3, the upper portion of the mounting shell 7 is limited in the lower mounting groove 142, and the upper end of the mounting shell 7 is attached to the air regulating sponge 6. The upper portion of the mounting shell 7 is provided with a second gas outlet 71. The lower portion of the mounting shell 7 extends out of the lower end of the valve body 3, the mounting shell 7 has a mounting space, the lower end of the mounting shell 7 is provided with a mounting opening in communication with the mounting space, and the air suction rod 8 is fixedly mounted in the mounting shell 7, and the lower portion of the air suction rod 8 extends out of the mounting shell 7 through the mounting opening. In this way, by providing the lower mounting groove 142, the filter screen 5, the air regulating sponge 6 and the mounting shell 7 are facilitated to be assembled, and the mounting stability of the filter screen 5, the air regulating sponge 6 and the mounting shell 7 is improved.

[0038] In the gas outlet valve of the lighter of the embodiment, the valve body 3 comprises a cylinder body 32 and a screw cap 33. The inner side wall of the upper portion of the cylinder body 32 is provided with an internal thread 321. The screw cap 33 is fittedly mounted on the upper portion of the cylinder body 32, the upper end of the screw cap 33 is provided with an axial through hole, and the gas outlet needle 2 passes through the through hole. In this way, the assembly is facilitated, and the cost is saved.

[0039] In the gas outlet valve of the lighter of the embodiment, the valve seat 1 comprises an upper seat body 13 and a lower seat body 14. The upper seat body 13 is provided with an axially-through second mounting cavity 131, and the gas outlet needle 2 is slidably arranged in the second mounting cavity 131. The upper end of the upper seat body 13 abuts against the screw cap 33. The upper end of the lower seat body 14 is provided with an upper mounting groove 141, and the lower end of the lower seat body 14 is provided with a lower mounting groove 142. The limiting plate 12 is fixedly arranged in the lower seat body 14. The upper mounting groove 141 and the lower mounting groove 142 are separated by the limiting plate 12. The lower portion of the upper seat body 13 is interference-fitted in the upper mounting groove 141. In this way, the structure is simple, the upper seat body 13 and the lower seat body 14 are facilitated to be mounted, and the mounting stability is good.

[0040] In the gas outlet valve of the lighter of the embodiment, the side wall of the mounting shell 7 is provided with a radial clamping seat 72, the radial clamping seat 72 is located in the cylinder body 32, the inner wall of the lower end of the cylinder body 32 is provided with a radial limiting ring plate 322, and the radial clamping seat 72 is positioned by being clamped and connected with the radial limiting ring plate 322. In this way, the structure is simple, the cylinder body 32 and the mounting shell 7 are facilitated to be assembled, and the mounting stability is good.

[0041] In the gas outlet valve of the lighter of the embodiment, the second sealing ring 34 is arranged between the radial clamping seat 72 and the radial limiting ring plate 322. In this way, the sealing effect of the mounting shell 7 and the valve body 3 is improved.

[0042] In the gas outlet valve of the lighter of the embodiment, the outer peripheral wall of the valve seat 1 is provided with a limiting groove 11, a third sealing ring 35 is arranged in the limiting groove 11, and the outer wall of the valve seat 1 and the inner wall of the valve body 3 are sealed by the third sealing ring 35. In this way, the sealing effect between the valve seat 1 and the valve body 3 is improved, and gas flowing in the valve body 3 is avoided to cause gas leakage and waste. Alternatively, the limiting groove 11 has two, and one third sealing ring 35 is installed in each limiting groove 11, further improving the sealing performance.

[0043] In the gas outlet valve of the lighter of the embodiment, the gas outlet needle 2 is sleeved with the annular partition plate 9, the annular partition plate 9 is located in the screw cap 33, the fourth sealing ring 91 is arranged between the upper end of the annular partition plate 9 and the inner wall of the top of the screw cap 33, the fourth sealing ring 91 is in contact with the outer peripheral wall of the gas outlet needle 2 for sealing, and the lower end of the annular partition plate 9 is in contact with the upper end of the spring 4. In this way, the structure is simple, and the sealing effect of the gas outlet needle 2 at the perforation of the screw cap 33 is improved.

[0044] In the gas outlet valve of the lighter of the embodiment, the gas adjusting sponge 6 is a 2.6 small sponge made of metal copper. The existing gas outlet valve structure will cause the flame to become smaller and smaller with continuous ignition, which is called the flame shrinking phenomenon. The reason is that the 4.0 large sponge is in liquid gas for a long time, the shrinkage density becomes smaller, the ventilation performance is reduced, and the flame becomes smaller. In the embodiment, the original 4.0 large sponge is replaced by a 2.6 small sponge made of metal copper. The filter screen 5 has an auxiliary effect on the speed of extinguishing the flame. The gas flow passes through the filter screen 5, the gasification time is improved, the situation that the liquid gas freezes the rubber part of the sealing valve is relieved, and the small sponge has a better effect on shrinking the flame than the existing disposable sponge.

[0045] In the gas outlet valve of the lighter of the embodiment, the gas suction rod 8 is a pen core suction rod. In this way, the density of the pen core suction rod is higher than that of the foam suction rod, the gas amount is effectively controlled, the phenomenon that the gas adjusting sponge 6 is soaked in liquid gas is avoided, and the problem of improving the flame shrinking is solved.

Claims

1. A gas outlet needle seal mechanism for a gas outlet valve of a lighter, characterized in that, include: Valve seat (1), the valve seat (1) has a sliding cavity, the upper end of the valve seat (1) has an opening that communicates with the sliding cavity, and an air inlet (121) is opened on the valve seat (1), the air inlet (121) is located below the sliding cavity; The lower part of the air outlet needle (2) is axially slidably disposed in the sliding cavity, and its upper end extends out of the valve seat (1) through an opening. The air outlet needle (2) has an air outlet channel (22) inside. The upper end of the air outlet needle (2) is opened with a first air outlet (23) communicating with the air outlet channel (22). The side wall of the air outlet needle (2) is opened with an air inlet (24) communicating with the air outlet channel (22). The first sealing ring (21) is positioned inside the valve seat (1). When the lower end of the air outlet needle (2) blocks the air inlet (121), the lower part of the air outlet needle (2) passes through the first sealing ring (21). The first sealing ring (21) abuts against the outer peripheral wall of the air outlet needle (2) to seal and prevent gas from entering the air inlet (24) of the air outlet needle (2).

2. A gas outlet valve for a lighter, characterized in that Including the gas needle sealing mechanism for a lighter gas valve as described in claim 1, it further includes: The valve body (3) has a first mounting cavity (31) inside, the valve seat (1) is fixedly installed in the first mounting cavity (31), and the upper part of the air outlet needle (2) extends to the outside of the upper end of the valve body (3); The spring (4) is located in the first mounting cavity (31). Its upper end abuts against the inner wall of the top of the valve body (3), and its lower end abuts against the retaining plate (25) on the outer side wall of the air outlet needle (2). In its natural state, the spring (4) abuts against the retaining plate (25) so that the lower end of the air outlet needle (2) blocks the air inlet (121).

3. A gas outlet valve for a lighter according to claim 2, wherein A limiting plate (12) is fixedly installed inside the valve seat (1). A lower mounting groove (142) is opened at the bottom of the valve seat (1). The limiting plate (12) separates the sliding cavity from the lower mounting groove (142). The air inlet (121) is opened on the limiting plate (12).

4. A gas outlet valve for a lighter according to claim 3, wherein Also includes: The filter screen (5) is fixedly located in the lower mounting groove (142), and its upper part is attached to the limiting plate (12); An air-regulating sponge (6) is fixedly located in the lower mounting groove (142), with its upper part attached to the filter screen (5); The mounting shell (7) is fixedly installed on the lower part of the valve body (3). The upper part of the mounting shell (7) is limited in the lower mounting groove (142). The upper end of the mounting shell (7) is in contact with the air regulating sponge (6). A second air outlet (71) is opened on the upper part of the mounting shell (7). The lower part of the mounting shell (7) extends to the lower end of the valve body (3). The mounting shell (7) has an installation space inside. An installation port communicating with the installation space is opened at the lower end of the mounting shell (7). An air suction rod (8) is fixedly installed in the mounting shell (7). The lower part of the air suction rod (8) extends to the outside of the mounting shell (7).

5. A gas outlet valve for a lighter according to claim 3, wherein Valve body (3) includes: The cylinder (32) has an internal thread (321) on its upper inner wall; The nut (33) is fitted on the upper part of the cylinder (32), and an axial through hole is opened at its upper end, through which the air needle (2) passes.

6. A gas outlet valve for a lighter according to claim 5, wherein Valve seat (1) includes: Upper seat (13) has an axially penetrating second mounting cavity (131), and the air needle (2) is slidably inserted in the second mounting cavity (131); the upper end of the upper seat (13) abuts against the nut (33); The lower seat body (14) is provided with an upper mounting groove (141) at its upper end and a lower mounting groove (142) at its lower end, and the limiting plate (12) is fixedly arranged in the lower seat body (14), and the upper mounting groove (141) and the lower mounting groove (142) are separated by the limiting plate (12); the lower part of the upper seat body (13) is press-fitted in the upper mounting groove (141).

7. A gas outlet valve for a lighter according to claim 6, wherein The side wall of the mounting shell (7) is provided with a radial clamping seat (72), the radial clamping seat (72) is located in the cylinder body (32), the inner wall of the lower end of the cylinder body (32) is provided with a radial limiting ring plate (322), and the radial clamping seat (72) is in clamping connection with the radial limiting ring plate (322) for positioning.

8. A gas outlet valve for a lighter according to claim 7, wherein A second sealing ring (34) is arranged between the radial clamping seat (72) and the radial limiting ring plate (322).

9. A gas outlet valve for a lighter according to claim 2, wherein The air regulating sponge (6) is made of 2.6 small sponge.

10. The gas outlet valve of a lighter according to claim 2, characterized in that The air suction rod (8) is a refill suction rod.

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