阅读说明：本技术 一种防漏油泄压装置及包含其的雾化器和电子烟 (Oil leakage prevention pressure relief device and atomizer and electronic cigarette comprising same ) 是由 肖卫军 赵贯云 于 2020-07-29 设计创作，主要内容包括：本发明属于雾化器技术领域,特别涉及一种防漏油泄压装置及包含其的雾化器和电子烟。所述防漏油泄压装置包括壳体、储油仓、通气杆和密封件,所述储油仓设于所述壳体内,所述储油仓顶部设有注油口；所述通气杆设于所述储油仓内,其靠近所述注油口的外侧壁开设有排气孔；所述密封件可拆卸地安装于所述注油口中；当将所述密封件压入至所述注油口的第一位置时,所述密封件与所述壳体和通气杆之间形成排气道,所述排气道与所述储油仓和排气孔连通,所述排气道设有至少两个弯折气道。本发明通过设置排气孔、弯折的排气道等结构,可解决因组装造成的产品漏油问题。(The invention belongs to the technical field of atomizers, and particularly relates to an oil leakage prevention pressure relief device, an atomizer comprising the same and an electronic cigarette. The oil leakage prevention pressure relief device comprises a shell, an oil storage bin, a ventilation rod and a sealing piece, wherein the oil storage bin is arranged in the shell, and the top of the oil storage bin is provided with an oil injection port; the ventilation rod is arranged in the oil storage bin, and the outer side wall of the ventilation rod, which is close to the oil filling port, is provided with an exhaust hole; the sealing element is detachably arranged in the oil filling opening; when the sealing element is pressed into the first position of the oil filling opening, an exhaust passage is formed between the sealing element and the shell and between the sealing element and the vent rod, the exhaust passage is communicated with the oil storage bin and the exhaust hole, and the exhaust passage is provided with at least two bent air passages. The invention can solve the problem of oil leakage of products caused by assembly by arranging the exhaust holes, the bent exhaust passages and other structures.)

1. An oil leakage prevention pressure relief device comprises a shell, an oil storage bin, a ventilation rod and a sealing piece, wherein the oil storage bin is arranged in the shell; the ventilation rod is arranged in the oil storage bin, and the outer side wall of the ventilation rod, which is close to the oil filling port, is provided with an exhaust hole; the sealing element is detachably arranged in the oil filling opening; when the sealing element is pressed into the first position of the oil filling opening, an exhaust passage is formed between the sealing element and the shell and between the sealing element and the vent rod, the exhaust passage is communicated with the oil storage bin and the exhaust hole, and the exhaust passage is provided with at least two bent air passages.

2. The oil leakage prevention and pressure relief device according to claim 1, wherein a first protrusion and a second protrusion protrude from an outer side wall of the ventilation rod in sequence, the first protrusion and the second protrusion are located below the exhaust hole, and the first protrusion and the second protrusion, the sealing member and the inner wall of the housing form the bent air passage.

3. An oil leakage prevention and pressure relief device according to claim 2, wherein the height of said second protrusion is higher than the height of said first protrusion; the sealing member has an installation portion, the installation portion lateral wall be equipped with first protruding and the protruding assorted recess of second.

4. The oil leakage prevention and pressure relief device according to claim 3, wherein a first protrusion and a second protrusion protrude from a sidewall of the groove, and when the sealing member is pressed into the second position of the oil filling opening, the groove is engaged with the first protrusion and the second protrusion, the first protrusion closely contacts with the first protrusion, and the second protrusion closely contacts with the second protrusion, so as to close the exhaust passage.

5. The oil leakage prevention and pressure relief device according to claim 1, wherein said seal closes said vent passage when said seal is pressed into said second position of said oil inlet.

6. The oil leakage prevention and pressure relief device according to claim 1, wherein a liquid leakage groove is formed inside the air rod below the air vent; a liquid receiving groove is formed in the outer side of the ventilation rod below the exhaust hole; the exhaust hole is formed in the way that the outer side of the ventilation rod inclines upwards to the inner side of the ventilation rod.

7. An atomizer, comprising a heating assembly and the oil leakage prevention and pressure relief device of any one of claims 1 to 6, wherein the bottom of the heating assembly is provided with an air inlet, the top of the heating assembly is provided with an air outlet, and the air outlet is communicated with the bottom of the ventilation rod; an oil inlet hole is formed between the oil storage bin and the heating assembly.

8. The atomizer of claim 7, further comprising a mouthpiece cover, wherein the mouthpiece cover is disposed above the sealing member and detachably connected to the sealing member, and an air outlet channel is disposed inside the mouthpiece cover and is communicated with the air outlet of the air-permeable rod.

9. The atomizer of claim 8, wherein the upper portion of said sealing member has a raised plug, and the bottom portion of said mouthpiece cover has a slot matching said plug; the outer side of the top of the cigarette holder sleeve is provided with a folding eave, and the folding eave is clamped at the top of the shell during installation; the cigarette holder is characterized in that a clamping block is arranged on the inner side of the bottom of the cigarette holder sleeve, and a clamping groove matched with the clamping block is arranged on the outer side of the upper portion of the ventilation rod.

10. An electronic cigarette, comprising a host and the atomizer of claim 9, the atomizer being mounted on the host.

Technical Field

The invention belongs to the technical field of atomizers, and particularly relates to an oil leakage prevention pressure relief device, an atomizer comprising the same and an electronic cigarette.

Background

The atomizer is a core component of an aerosol generating device and is mainly used for heating, atomizing and discharging tobacco tar stored in the atomizer. The atomizer comprises an oil storage bin, a heating component, a cigarette holder component, a ventilation rod and other structures, wherein the heating component and the ventilation rod are arranged in the oil storage bin; an oil hole is formed between the oil storage bin and the heating assembly, and the tobacco tar in the oil storage bin enters the heating assembly from the oil hole to be heated and atomized and then is discharged from the ventilation rod. The cigarette holder subassembly detachably install in store up oil storehouse top, the inside air flue that is equipped with and ventilates the pole intercommunication of cigarette holder subassembly. The cigarette holder component is used for sealing the tobacco tar and discharging the atomized smoke.

After the tobacco tar has been adorned in the oil storage storehouse of atomizer, can compressed air when assembling the cigarette holder subassembly, will press the air to the oil storage storehouse in, make the atmospheric pressure in the oil storage storehouse be greater than external atmospheric pressure, in order to reach atmospheric pressure balance, atmospheric pressure in the oil storage storehouse can be with the tobacco tar toward external pressure to lead to the tobacco tar to leak outward, both influenced user experience and also influenced the life of product.

Disclosure of Invention

The invention aims to provide an oil leakage prevention pressure relief device, an atomizer comprising the same and an electronic cigarette, so that the defect that oil leakage is easy to occur when a sealing piece is installed after oil is injected into an oil storage bin of the existing atomizer is overcome.

In order to achieve the purpose, the invention provides an oil leakage prevention pressure relief device which comprises a shell, an oil storage bin, a ventilation rod and a sealing element, wherein the oil storage bin is arranged in the shell; the ventilation rod is arranged in the oil storage bin, and the outer side wall of the ventilation rod, which is close to the oil filling port, is provided with an exhaust hole; the sealing element is detachably arranged in the oil filling opening; when the sealing element is pressed into the first position of the oil filling opening, an exhaust passage is formed between the sealing element and the shell and between the sealing element and the vent rod, the exhaust passage is communicated with the oil storage bin and the exhaust hole, and the exhaust passage is provided with at least two bent air passages.

When the exhaust hole is communicated with the oil storage bin, the position of the oil filling port where the sealing element is located is the first position of the oil filling port. Specifically, the bottom of the sealing element is pressed into the shell to seal the top of the oil filling port, and the side wall of the upper part of the oil filling port is connected with the exhaust hole, namely the sealing element does not completely seal the position of the oil storage bin. When the sealing device is used, the sealing element is taken out firstly, oil is filled into the oil storage bin through the oil filling port, and then the sealing element is installed, namely the inner side of the sealing element is in contact with the ventilation rod, and the outer side of the sealing element is in contact with the shell. When the sealing element is pressed into a first position above the exhaust hole, an exhaust channel is formed between the shell and the ventilation rod and between the oil storage bin and the sealing element, the exhaust channel is communicated with the oil storage bin and the exhaust hole, and the exhaust channel is provided with at least two bent air channels. And the gas above the oil storage bin is extruded and is exhausted from the exhaust hole along the exhaust passage. In the sealing process of the sealing element, gas above the oil storage bin is exhausted from the exhaust hole, the air pressure of the oil storage bin and the outside is balanced, the oil leakage phenomenon caused by pressure difference is avoided, and the sealing effect is good. More bends can be arranged, so that better buffering and pressure relief can be realized, the gas can be discharged, and oil leakage can be prevented.

The oil leakage prevention pressure relief device can be applied to an atomizer and can also be applied to other oil storage devices.

Preferably, the outer side wall of the ventilation rod is provided with a first bulge and a second bulge in a protruding mode in sequence, the first bulge and the second bulge are located below the exhaust hole, and the first bulge and the second bulge, the sealing element and the inner wall of the shell form the bent air channel.

Preferably, the height of the second protrusion is higher than the height of the first protrusion; the sealing member has an installation portion, the installation portion lateral wall be equipped with first protruding and the protruding assorted recess of second. Preferably, a limiting bulge is arranged on the outer side of the ventilation rod above the exhaust hole; the protruding height of the limiting protrusion can be consistent with the protruding height of the first protrusion. When the sealing element is pressed above the vent hole and clamped on the inner side of the shell and the outer side of the vent rod, the sealing element is just in contact with the limiting bulge of the vent rod to limit the upward discharge of gas, and the gas can only be discharged through the vent hole on the side wall of the vent rod; the limiting bulge is matched with the sealing element, so that the sealing element can be better sealed, and oil leakage is prevented.

Preferably, the side wall of the groove is convexly provided with a first bump and a second bump, when the sealing element is pressed into the second position of the oil filling opening, the groove is matched with the first bump and the second bump, the first bump is tightly attached to the first bump, and the second bump is tightly attached to the second bump, so that the exhaust passage is closed. The arrangement of the first projection and the second projection enables the contact surface of the sealing element and the side wall to be in curved surface contact, and the sealing performance of the sealing element can be further improved. Preferably, a contact surface of the sealing member and the housing is also in curved surface contact, thereby further improving the sealing property.

Preferably, the seal closes the vent passage when the seal is pressed into the second position of the oil fill port. When the oil storage bin is closed by the sealing element, the position of the oil filling opening where the sealing element is located is the second position of the oil filling opening. The second position means a position where the bottom of the sealing member is pressed into the housing to seal both the top of the oil filling port and the exhaust hole, i.e., a position where the sealing member completely seals the entire oil storage bin.

Preferably, a liquid leakage groove is formed in the inner side of the ventilation rod below the exhaust hole; a liquid receiving groove is formed in the outer side of the ventilation rod below the exhaust hole; the exhaust hole is formed in the way that the outer side of the ventilation rod inclines upwards to the inner side of the ventilation rod. Set up the weeping groove in exhaust hole below, can prevent that the installation from shaking and make the tobacco tar in the oil storage storehouse spill over in the too urgent or use of process, the tobacco tar can be saved in the weeping groove of exhaust hole below, and can not directly discharge from the exhaust hole. The liquid receiving tank can be used for temporarily storing overflowing tobacco tar and also can be used for storing condensate. The exhaust hole is arranged in an inclined manner, which is not only beneficial to the discharge of gas, but also beneficial to the prevention of the leakage of the tobacco tar. Preferably, the exhaust holes are provided with more than 2. Preferably, the exhaust holes are provided at intervals in a circumferential direction of the ventilation bar.

The other technical scheme of the invention is as follows: an atomizer comprises a heating assembly and the oil leakage prevention pressure relief device, wherein the bottom of the heating assembly is provided with an air inlet, the top of the heating assembly is provided with an air outlet, and the air outlet is communicated with the bottom of a ventilation rod; an oil inlet hole is formed between the oil storage bin and the heating assembly. When the heating device is used, tobacco tar in the oil storage bin enters the heating assembly from the oil hole to be heated and atomized and then is discharged from the ventilation rod.

Preferably, the atomizer still includes the cigarette holder cover, the cigarette holder cover is located sealing member top, and with the sealing member is detachable continuous, cigarette holder cover inboard is equipped with the gas outlet channel, the gas outlet channel with the top UNICOM of air pin. The cigarette holder can be disassembled, and is convenient to disassemble and wash.

Preferably, the bottom of the cigarette holder sleeve is provided with a slot, and the upper part of the sealing element is provided with a convex insertion block matched with the slot; the outer side of the top of the cigarette holder sleeve is provided with a folding eave, and the folding eave is clamped at the top of the shell during installation; the cigarette holder is characterized in that a clamping block is arranged on the inner side of the bottom of the cigarette holder sleeve, and a clamping groove matched with the clamping block is arranged on the outer side of the upper portion of the ventilation rod. The installation is convenient and stable.

Preferably, an end cover is further arranged below the shell, an electrode is fixed on the end cover, and the electrode is electrically connected with the heating assembly; the end cover is provided with air ports, an air inlet channel is formed between the air ports and the air inlet of the heating assembly, and the number of the air ports is more than 2. The multiple air ports are arranged, so that air can be uniformly introduced, and the tobacco tar can be uniformly discharged along with the air after being heated.

The invention also provides another technical scheme: the utility model provides an electronic cigarette, includes host computer and above-mentioned atomizer, the atomizer install in on the host computer.

Compared with the prior art, the invention has the following beneficial effects:

1. according to the oil leakage prevention and pressure relief device, the vent hole is formed in the side wall of the vent rod, the exhaust channel communicated between the vent hole and the oil storage bin is provided with at least two bends, and gas in the oil storage bin is exhausted in the installation process of the sealing element, so that oil leakage caused by the fact that gas pressure difference exists between the oil storage bin and the outside due to the fact that the gas is compressed in the installation process is avoided. Wherein, through setting up arch and recess between sealed piece and exhaust rod, make the exhaust passage be equipped with two at least buckles, be favorable to gaseous buffering to excrete, be favorable to the sealed of the tobacco tar in the oil storage storehouse.

2. The liquid leakage groove, the liquid receiving groove and other structures are arranged below the exhaust hole, so that the liquid leakage device can be used for storing tobacco tar overflowing under the conditions of emergency in the installation process, shaking in the use process and the like, or storing condensate and the like, the oil leakage prevention effect of the device is further improved, and the user experience is improved.

3. The detachable cigarette holder sleeve is arranged on the cigarette holder, and the detachable cigarette holder sleeve is detachably combined with the sealing element, the shell, the ventilation rod and the like through structures such as the inserting groove, the folded eaves and the clamping block, so that the cigarette holder is stable, attractive and convenient to disassemble and wash.

Drawings

Fig. 1 is a perspective view of an atomizer according to the present invention.

Fig. 2 is a front view of the atomizer of the present invention.

Fig. 3 is a cross-sectional view of an atomizer according to the present invention.

Fig. 4 is a schematic view of the internal structure of the atomizer of the present invention when a seal is installed.

Fig. 5 is a schematic view showing the internal structure of the atomizer when the seal is mounted according to another embodiment of the present invention. .

Fig. 6 is a schematic view showing the internal structure of the atomizer when the seal is mounted according to still another embodiment of the present invention.

Description of the main reference numerals:

1. a housing;

2. an oil storage bin; 21. an oil filling port;

3. a ventilation bar; 31. an exhaust hole; 32. a first protrusion; 33. a second protrusion; 34. a limiting bulge; 35. a liquid leakage groove; 36. a liquid receiving tank;

4. a seal member; 41. inserting a block; 42. an installation part; 43. a first bump; 44. a second bump;

5. a suction nozzle sleeve; 51. an air outlet channel; 52. a slot; 53. folding the eaves; 54. a clamping block;

6. a heating assembly; 61. a heating element; 62. an atomization bin; 63. an air inlet; 64. an air outlet; 65. oil absorbing cotton; 66. an oil inlet hole;

7. an electrode;

8. an end cap;

9. and (4) an exhaust passage.

Detailed Description

The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the specific embodiments.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

As shown in fig. 1 to 4, an atomizer comprises a housing 1, an oil storage bin 2, a ventilation rod 3, a sealing member 4, a nozzle sleeve 5, a heating assembly 6, an electrode 7 and an end cover 8. The oil storage bin 2 is arranged in the shell 1, the ventilation rod 3 is arranged in the oil storage bin 2, and the ventilation rod 3 extends to the upper portion of the oil storage bin 2. An oil filling port 21 is formed in the top of the oil storage bin 2, and the sealing element 4 is arranged at the oil filling port 21. The cigarette holder sleeve is arranged above the sealing element 4 and detachably connected with the sealing element 4, an air outlet channel 51 is arranged on the inner side of the cigarette holder sleeve, and the air outlet channel 51 is communicated with the top of the ventilation rod 3. The bottom of the heating component 6 is provided with an air inlet 63, the top of the heating component is provided with an air outlet 64, and the air outlet 64 is communicated with the bottom of the ventilation rod 3; an oil inlet 66 is arranged between the oil storage bin 2 and the heating component 6. The end cover 8 is arranged below the shell 1, an electrode 7 is fixed on the end cover 8, and the electrode 7 is electrically connected with the heating component 6.

Furthermore, the ventilation rod 3 is close to the outer side wall of the oil filling opening 21 and is provided with an exhaust hole 31, matched protrusions and grooves are arranged on the outer side of the ventilation rod 3 and the inner side of the sealing element 4, the sealing element 4 is detachably connected with the ventilation rod 3 and the shell, when the sealing element 4 is pressed into the first position of the oil filling opening 21, an exhaust passage 9 is formed between the sealing element 4 and the shell 1 and the ventilation rod 3, and the exhaust passage 9 is communicated with the oil storage bin 2 and the exhaust hole 31. The exhaust passage 9 is provided with at least two bent air passages. Preferably, a first protrusion 32 and a second protrusion 33 are sequentially arranged on the inner side of the ventilation rod 3, the first protrusion 32 and the second protrusion 33 are located below the exhaust hole 31, and the first protrusion 32 and the second protrusion 33, the sealing element 4 and the inner wall of the housing 1 form the bent air passage. The height of the second bulge 33 bulging towards the exhaust passage 9 is greater than that of the first bulge 32; the sealing element 4 is provided with a mounting part 42, and the side wall of the mounting part 42 is provided with a groove matched with the first bulge 32 and the second bulge 33. And a first lug 43 and a second lug 44 protrude from the side wall of the groove, when the sealing element 4 is pressed into the second position of the oil filling port 21, the groove is matched with the first lug 32 and the second lug 33, the first lug 43 is tightly attached to the first lug 32, and the second lug 4433 is tightly attached to the second lug so as to close the exhaust passage 9. Preferably, a limiting protrusion 34 is disposed on the outer side of the ventilation bar 3 above the exhaust hole 31. The height of the stopper protrusion 34 may be identical to the height of the first protrusion 32. Namely, the air vent hole 31 is located in the groove formed by the position-limiting protrusion 34 and the first protrusion 32. The inner side of the sealing element 4 is provided with a groove matched with the first bulge 32 and the second bulge 33. When the sealing element 4 is positioned above the exhaust hole 31 and clamped on the inner side of the shell and the outer side of the ventilation rod 3, the sealing element 4 just contacts with the limiting bulge 34 of the ventilation rod 3 to limit the upward exhaust of the gas, and the gas can only be exhausted through the exhaust hole 31 on the side wall of the ventilation rod 3; the limit protrusion 34 is matched with the sealing element 4, so that the sealing of the sealing element 4 can be better realized, and oil leakage is prevented.

In other embodiments, as shown in fig. 5, a leakage groove 35 is formed inside the ventilation rod 3 below the exhaust hole 31. The liquid leakage groove 35 is arranged below the exhaust hole 31, so that when the smoke oil in the oil storage bin 2 overflows due to over-emergency installation process or shaking in the using process, the smoke oil can be stored in the liquid leakage groove 35 below the exhaust hole 31 and cannot be directly discharged from the exhaust hole 31. Preferably, the exhaust hole 31 is formed to be inclined upward from the outside of the ventilation bar 3 to the inside of the ventilation bar 3. Not only is beneficial to the discharge of gas, but also is beneficial to the prevention of the leakage of the tobacco tar.

In other embodiments, as shown in fig. 6, a liquid receiving groove 36 is provided on the outer side of the ventilation bar 3 below the exhaust hole 31. Can be used for temporarily storing overflowed tobacco tar and also can be used for storing condensate. Further, the number of the exhaust holes 31 may be 1 or more. When a plurality of the exhaust holes 31 are provided, the exhaust holes may be provided at intervals in a circumferential direction of the ventilation bar 3.

Furthermore, a convex insertion block 41 is arranged at the upper part of the sealing element 4, and a slot 52 matched with the insertion block 41 is arranged at the bottom of the cigarette holder sleeve; the outer side of the top of the cigarette holder sleeve is provided with a folding eave 53, and when the cigarette holder sleeve is installed, the folding eave 53 is clamped at the top of the shell; a clamping block 54 is arranged on the inner side of the bottom of the cigarette holder sleeve, and a clamping groove matched with the clamping block 54 is arranged on the outer side of the upper part of the ventilation rod 3. In this embodiment, the slot refers to a groove formed by the limiting protrusion 34 and the first protrusion 32, and the vent hole is also located in the groove.

Further, heating element 6 includes heat-generating body 61 and atomizing storehouse 62, heat-generating body 61 is located in the atomizing storehouse 62, atomizing storehouse 62 bottom is equipped with air inlet 63, the top is equipped with gas outlet 64, the side is equipped with the oil inlet. The oil inlet can be provided with two or more. The oil inlet is provided with an oil absorption cotton 65 for absorbing and storing the tobacco tar. Of course, the oil absorbing cotton 65 can be replaced by other materials with similar functions. After the heating element 61 is connected with the electrode 7, the tobacco tar stored in the oil absorbent cotton 65 and the atomization bin 62 is heated, atomized and discharged from the air outlet 64. The heating body 61 is made of a conductive metal material having a relatively high resistivity.

Further, the bottom of the shell 1 is provided with an end cover 8, and the end cover 8 is detachably connected with the shell 1 through threads or buckles. The electrode 7 is detachably connected with the end cover 8 through an insulating ring with a protrusion and groove structure. The electrode 7 comprises a positive electrode and a negative electrode, and the positive electrode and the negative electrode of the electrode 7 are respectively and electrically connected with the heating body 61. In the existing electronic cigarette product, the other ends of the positive electrode and the negative electrode of the electrode 7 are respectively electrically connected with the positive electrode and the negative electrode of the host machine, and the electric energy of the host machine is transferred to the heating body, so that the heating body 61 generates heat and atomizes the tobacco tar. Preferably, the end cover 8 is provided with air ports, an air inlet channel is formed between the air ports and the air inlet 63 of the heating component 6, and the number of the air ports is more than 2. The multiple air ports are arranged, so that air can be uniformly introduced, and the tobacco tar can be uniformly discharged along with the air after being heated.

The atomizer of this embodiment can be connected with the host computer and constitute the electron cigarette, the atomizer can be with the host computer is detachable to be connected with, provides the power by the host computer.

When in use, the sealing element 4 is taken out, oil is filled into the oil storage bin 2 through the oil filling opening 21, and then the sealing element 4 is installed, namely the inner side of the sealing element 4 is contacted with the ventilation rod 3, and the outer side of the sealing element is contacted with the shell 1. When the sealing element 4 is pressed into the first position of the oil filling opening 21, the gas above the oil storage bin 2 is extruded, and is exhausted from the exhaust hole 31 along the exhaust passage 9 firstly upwards, then leftwards, then upwards and leftwards, wherein when the exhaust hole 31 is communicated with the oil storage bin 2, the sealing element 4 is positioned at the first position of the oil filling opening 21. More bends can be arranged, so that better buffering and pressure relief can be realized, the gas can be discharged, and oil leakage can be prevented. When the sealing member 4 is pressed down to the second position of the oil filling opening 21, the sealing member closes the exhaust passage 9, wherein when the sealing member 4 closes the oil storage bin 2, the sealing member 4 is located at the second position of the oil filling opening 21. In the sealing process of the sealing element 4, the gas above the oil storage bin 2 is exhausted from the exhaust hole 31, the air pressure of the oil storage bin 2 and the outside is balanced, the oil leakage phenomenon cannot be caused due to pressure difference, and the sealing effect is good. In summary, the oil leakage prevention and pressure relief device of the present invention has the exhaust hole 31 disposed on the side wall of the ventilation rod 3, and the exhaust channel 9 communicating between the exhaust hole 31 and the oil storage bin 2 is provided with at least two bends, so that the gas in the oil storage bin 2 is exhausted in the installation process of the sealing member 4, thereby preventing oil leakage caused by a pressure difference between the oil storage bin 2 and the outside due to the gas compression in the installation process. Wherein, set up arch and recess between sealed piece and exhaust rod, make exhaust passage 9 be equipped with two at least buckles, be favorable to gaseous buffering to excrete, be favorable to the sealed of tobacco tar in oil storage storehouse 2.

The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.