Second-hand smoke purification device

Abstract

The invention relates to the technical field of second-hand smoke purification, and discloses a second-hand smoke purification device which comprises a lifting mechanism, the lifting mechanism comprises a first motor installed on the upper surface of a supporting bottom plate in a matched mode, and the output end of the first motor is fixedly sleeved with a first limiting wheel located in the supporting bottom plate. Through the action of the lifting mechanism, different heights of the whole device can be adjusted according to different heights of a cigarette held in a mouth and held in a hand, so that the function of eliminating smoke is utilized to the maximum extent, and through the action of the filtering mechanism, the smoke can be absorbed, filtered and melted, so that the smoke can be effectively eliminated. And meanwhile, under the action of the detector, the device is controlled to be started and stopped, the problem that the service life of the device is shortened due to frequent manual switching is solved, finally, under the action of the sweeping mechanism, the air inlet where smoke enters for a long time can be subjected to blockage removal operation, and the cleaning efficiency is improved. And the service life of the device is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of secondhand smoke purification, and in particular to a secondhand smoke purification device. Background Art

[0002] Secondhand smoke contains many harmful substances, such as nicotine, tar, carbon monoxide, benzopyrene, etc. Long-term exposure to secondhand smoke environment will cause serious harm to human health. For non-smokers, inhaling secondhand smoke may increase the risk of lung cancer, heart disease, respiratory diseases, etc., especially in closed spaces or poorly ventilated places where ventilation effect is not ideal.

[0003] Most of the existing secondhand smoke purification devices lack the function of secondary purification of secondhand smoke, which will result in incomplete purification of secondhand smoke, causing people in a certain space to inhale secondhand smoke into their lungs. At the same time, they also lack the ability to lift and lower the device, and cannot expand the range of the device to absorb secondhand smoke. Therefore, a secondhand smoke purification device has emerged. Summary of the invention

[0004] In view of the above problems existing in the existing secondhand smoke purification device, the present invention is proposed.

[0005] Therefore, the purpose of the present invention is to provide a secondhand smoke purification device, the purpose of which is to be able to perform a secondary purification operation on the secondhand smoke, thereby completely purifying the secondhand smoke in the air, and at the same time, the height of the device can be adjusted to different heights following the cigarettes.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a secondhand smoke purification device, comprising: The supporting mechanism comprises a supporting bottom plate, and brake wheels are fixedly mounted on the four corners of the bottom of the supporting bottom plate by bolts; A lifting mechanism is fixedly arranged on the top of the supporting bottom plate, a filtering mechanism is fixedly arranged on the top of the lifting mechanism, and a cleaning mechanism is fixedly arranged in the inner cavity of the filtering mechanism.

[0007] As a preferred solution of the secondhand smoke purification device described in the present invention, wherein: the lifting mechanism includes a first motor adapted to be installed on the upper surface of the supporting base plate, the output end fixed sleeve of the first motor is provided with a first limiting wheel located inside the supporting base plate, the outer surface of the first limiting wheel is transmission-connected with a belt, a hollow column is fixedly provided on the top of the supporting base plate, and a one-way screw is rotatably provided in the inner cavity of the hollow column.

[0008] As a preferred solution of the secondhand smoke purification device described in the present invention, wherein: the bottom fixed sleeve of the outer surface of the one-way screw is provided with a second limiting wheel, the outer surface of the one-way screw is threadedly connected with a hollow lifting column, the inner surface of the hollow column is fixedly installed with fixing strips used in conjunction with the hollow lifting column, and are symmetrically distributed, and the top of the hollow lifting column is fixedly connected with a mounting plate by bolts.

[0009] As a preferred solution of the secondhand smoke purification device of the present invention, the one-way screw is rotatably connected to the inside of the supporting base plate, the second limiting wheel is connected to the first limiting wheel through a belt drive, and the hollow lifting column is slidably connected to the inner cavity of the hollow column.

[0010] As a preferred solution of the secondhand smoke purification device described in the present invention, wherein: the filtering mechanism includes a double-layer shell fixedly installed on the top of the mounting plate by bolts, a side door is hinged on one side of the double-layer shell, the upper surface of the double-layer shell is fixedly connected to a liquid filling port, one side of the outer surface of the double-layer shell is fixedly connected to a liquid discharge port adapted for use with the liquid filling port, and limit strips are symmetrically fixedly arranged on the inner surface of the double-layer shell.

[0011] As a preferred solution of the secondhand smoke purification device described in the present invention, a filter plate is movably inserted inside the double-layer shell, an exhaust fan used in conjunction with the filter plate is adapted and installed on the bottom of the inner surface of the upper layer of the double-layer shell, an exhaust hood adapted for use with the exhaust fan is fixedly provided on one side of the filter plate, a partition is fixedly installed on the inner surface of the double-layer shell, and a detector is fixedly installed on the input end of the exhaust fan.

[0012] As a preferred solution of the secondhand smoke purification device described in the present invention, wherein: the filter plate is slidably connected to the limit bar, the exhaust hood is fixedly connected to the detector through a pipe, and the output end of the exhaust fan passes through the pipe and extends to the bottom of the side opposite to the partition and the double-layer shell.

[0013] As a preferred solution of the secondhand smoke purification device described in the present invention, the cleaning mechanism includes a second motor adapted to be installed at the bottom of the inner surface of the lower layer of the double-layer shell, the output end of the second motor is fixedly connected with a bidirectional screw rod, the outer side of the bidirectional screw rod is connected to a limiting block through a threaded connection, a roller is rotatably provided on one side of the side door, and a plurality of brushes are fixedly installed on the outer surface of the roller and are evenly arranged on the outer side of the roller.

[0014] As a preferred solution of the secondhand smoke purification device described in the present invention, a gear is fixedly sleeved on the outer surface of the other end of the drum, one side of the gear is meshed with a toothed pressure plate fixedly installed on one side of the inner surface of the lower layer of the double-layer shell, and the inner surface of the lower layer of the double-layer shell is symmetrically fixed with a fixing plate used in conjunction with the drum.

[0015] As a preferred solution of the secondhand smoke purification device described in the present invention, the other end of the bidirectional screw is rotatably connected to the top of the inner surface of the lower layer of the double-layer shell, one end of the roller is rotatably connected to the inside of the limit block, and the brush is adapted to the air inlet of the side door.

[0016] The beneficial effects of the present invention are as follows: through the action of the lifting mechanism, the different heights of the entire device can be adjusted according to the different heights of the cigarette when it is held in the mouth and in the hand, so as to maximize the use of the smoke elimination function; through the action of the filtering mechanism, the smoke can be absorbed, filtered and melted into water, so as to improve the air quality in a certain space; at the same time, under the action of the detector, the start and stop of the device are controlled, so as to solve the problem of shortening the service life of the device due to frequent manual switching; finally, under the action of the cleaning mechanism, the air inlet that has been taking in smoke for a long time can be blocked and cleared, so as to improve the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them: Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 It is a partial cross-sectional schematic diagram of the lifting mechanism of the present invention.

[0019] Figure 3 It is a schematic diagram of the filter mechanism of the present invention.

[0020] Figure 4 It is a partial cross-sectional schematic diagram of the filtering mechanism of the present invention.

[0021] Figure 5 It is a schematic diagram of the overall structure of the cleaning mechanism of the present invention.

[0022] Figure 6 It is a schematic diagram of the partial structure of the cleaning mechanism of the present invention.

[0023] In the figure: 100, support mechanism; 101, support bottom plate; 102, brake wheel; 200, lifting mechanism; 201, first motor; 202, first limiting wheel; 203, belt; 204, hollow column; 205, one-way screw rod; 206, second limiting wheel; 207, hollow lifting column; 208, fixing bar; 209, mounting plate; 300, filtering mechanism; 301, double-layer shell; 302 , side door; 303, liquid filling port; 304, liquid discharge port; 305, limit strip; 306, filter plate; 307, exhaust fan; 308, exhaust hood; 309, partition; 310, detector; 400, cleaning mechanism; 401, second motor; 402, bidirectional screw rod; 403, limit block; 404, roller; 405, brush; 406, gear; 407, gear pressure plate; 408, fixing plate. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0025] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0026] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0027] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0028] Example 1 Reference Figures 1 to 6 , which is the first embodiment of the present invention, provides a secondhand smoke purification device, the device comprising: The support mechanism 100 includes a support base plate 101, and brake wheels 102 are fixedly mounted on the four corners of the bottom of the support base plate 101 by bolts; A lifting mechanism 200 is fixedly disposed on the top of the supporting bottom plate 101 , a filtering mechanism 300 is fixedly disposed on the top of the lifting mechanism 200 , and a cleaning mechanism 400 is fixedly disposed in the inner cavity of the filtering mechanism 300 .

[0029] Specifically, the lifting mechanism 200 includes a first motor 201 adapted to be installed on the upper surface of the supporting base plate 101, the output end of the first motor 201 is fixedly sleeved with a first limiting wheel 202 located inside the supporting base plate 101, the outer surface of the first limiting wheel 202 is transmission-connected with a belt 203, a hollow column 204 is fixedly provided on the top of the supporting base plate 101, and a one-way screw rod 205 is rotatably provided in the inner cavity of the hollow column 204.

[0030] Among them, the one-way screw rod 205 is rotatably connected to the inside of the supporting base plate 101, and the first limiting wheel 202, the belt 203, and the second limiting wheel 206 are all located inside the supporting base plate 101. Under the action of the belt 203, the power of the power source is transmitted to the use end, thereby having the function of power transmission, so that the parts can rise stably.

[0031] Furthermore, a second limiting wheel 206 is fixedly sleeved on the bottom of the outer surface of the one-way screw rod 205, and a hollow lifting column 207 is threadedly connected to the outer surface of the one-way screw rod 205. A fixing strip 208 used in conjunction with the hollow lifting column 207 is fixedly installed on the inner surface of the hollow column 204 and is symmetrically distributed. The top of the hollow lifting column 207 is fixedly connected to a mounting plate 209 by bolts.

[0032] Among them, the second limiting wheel 206 is connected to the first limiting wheel 202 through the belt 203, the hollow lifting column 207 is slidably connected to the inner cavity of the hollow column 204, and the upper end of the one-way screw rod 205 is rotatably connected to the hollow column 204. When the one-way screw rod 205 rotates, it can drive the hollow lifting column 207 to rise smoothly, thereby lifting the components to a moving height.

[0033] Preferably, the filtering mechanism 300 includes a double-layer shell 301 fixedly mounted on the top of the mounting plate 209 by bolts, a side door 302 is hinged on one side of the double-layer shell 301, a liquid filling port 303 is fixedly connected to the upper surface of the double-layer shell 301, a liquid discharge port 304 adapted for use with the liquid filling port 303 is fixedly connected to one side of the outer surface of the double-layer shell 301, and a limit strip 305 is symmetrically fixedly arranged on the inner surface of the double-layer shell 301.

[0034] There are multiple limit strips 305, which are symmetrically distributed on both sides of the filter plate 306, so as to ensure the stability of the filter plate 306 when inserted in the double-layer shell 301. The filter plate 306 is made of raw materials containing activated carbon components, so as to absorb secondhand smoke in the air and improve air quality.

[0035] It should be noted that a filter plate 306 is movably inserted inside the double-layer shell 301, and an exhaust fan 307 used in conjunction with the filter plate 306 is adapted and installed at the bottom of the inner surface of the upper layer of the double-layer shell 301. An exhaust hood 308 adapted for use with the exhaust fan 307 is fixedly provided on one side of the filter plate 306. A partition plate 309 is fixedly installed on the inner surface of the double-layer shell 301, and a detector 310 is fixedly installed at the input end of the exhaust fan 307.

[0036] Among them, the filter plate 306 is slidably connected to the limit bar 305, the exhaust hood 308 is fixedly connected to the detector 310 through a pipeline, and the output end of the exhaust fan 307 passes through the pipeline and extends to the bottom of the side opposite to the partition 309 and the double-layer shell 301. Water is added to the side opposite to the partition 309 and the double-layer shell 301 through the liquid filling port 303, so that the secondhand smoke that has not been absorbed by the filter plate 306 can be filtered again, thereby improving the operation of eliminating the secondhand smoke.

[0037] When in use, the device is moved to a suitable position through the action of the brake wheel 102, and the brake wheel 102 is locked to control the operation of the first motor 201. The output end of the first motor 201 drives the first limiting wheel 202 to rotate, and the first limiting wheel 202 drives the belt 203 to transmit, and the belt 203 drives the second limiting wheel 206 to rotate, thereby driving the one-way screw rod 205 to rotate, and with the assistance of the fixing bar 208, the hollow lifting column 207 is driven to move upward in the inner cavity of the hollow column 204. Under the action of the mounting plate 209, the filter mechanism 300 and the cleaning mechanism 400 located on the top of the mounting plate 209 are pushed until they are adjusted to a suitable height to adapt to the level of the device and the burning cigarette in the hands of the smoker, so as to facilitate the absorption of smoke produced after the burning cigarette; A proper amount of water is added from the liquid filling port 303 into the enclosed space on the side opposite to the partition 309 and the double-layer shell 301, and the operation of the exhaust fan 307 is controlled to suck the secondhand smoke located outside the side door 302 into the double-layer shell 301. The secondhand smoke is firstly filtered by the filter plate 306, and under the action of the exhaust hood 308, the secondhand smoke after the preliminary filtration is sucked into the pipeline from the detector 310 to the output end of the exhaust fan 307 through the pipeline. Because the pipeline at the output end of the exhaust fan 307 is located at the bottom of the aqueous solution, the secondhand smoke after the preliminary filtration can be filtered for a second time. After the purification of the secondhand smoke is completed, the drain port 304 is finally opened to discharge the sewage. Smokers can also throw cigarette butts into the solution from the liquid filling port 303. When the drain port 304 is opened, the water-soaked cigarette butts can also be discharged, thereby reducing the risk of fire. At the same time, under the action of the detector 310, it is detected whether there are still secondhand smoke components in the air, thereby controlling the opening and closing of the device.

[0038] In summary, through the action of the lifting mechanism 200, the different heights of the entire device can be adjusted according to the different heights of the cigarette when it is held in the mouth and in the hand, so as to maximize the smoke elimination function. Through the action of the filtering mechanism 300, the smoke can be absorbed, filtered and melted into water, thereby improving the air quality in a certain space. At the same time, under the action of the detector 310, the start and stop of the device are controlled, which solves the problem of shortening the service life of the device due to frequent manual switching. Finally, under the action of the cleaning mechanism 400, the air inlet that has been intake of smoke for a long time can be cleared and blocked, thereby increasing the service life of the device.

[0039] Example 2 Reference Figure 5 and 6 , which is the second embodiment of the present invention, is different from the first embodiment in that: the cleaning mechanism 400 uses a brush 405 to clean the hole of the side door 302 that has been used for a long time.

[0040] Furthermore, the cleaning mechanism 400 includes a second motor 401 adapted to be installed at the bottom of the inner surface of the lower layer of the double-layer shell 301, the output end of the second motor 401 is fixedly connected to a bidirectional screw rod 402, the outer side of the bidirectional screw rod 402 is connected to a limiting block 403 through a threaded connection, a roller 404 is rotatably provided on one side of the side door 302, and a plurality of brushes 405 are fixedly installed on the outer surface of the roller 404 and are evenly arranged on the outer side of the roller 404.

[0041] Among them, the other end of the bidirectional screw rod 402 is rotatably connected to the top of the inner surface of the lower layer of the double-layer shell 301, one end of the roller 404 is rotatably connected to the inside of the limit block 403, and the outer surface of the brush 405 is distributed with a number of protrusions, so that the holes of the side door 302 can be cleaned to ensure that the air inlet of the side door 302 always maintains the state of maximum air intake to avoid blockage.

[0042] Furthermore, a gear 406 is fixedly mounted on the outer surface of the other end of the roller 404, and one side of the gear 406 is meshed with a toothed pressure plate 407 fixedly mounted on one side of the inner surface of the lower layer of the double-layer shell 301, and a fixing plate 408 used in conjunction with the roller 404 is symmetrically fixedly mounted on the inner surface of the lower layer of the double-layer shell 301.

[0043] Among them, the brush 405 is adapted to the air inlet of the side door 302, the gear 406 is meshed with the gear pressure plate 407, and the rotation speed of the bidirectional screw 402 can make one row of brushes 405 about to exit the holes of the side door 302 while the other row of brushes 405 is about to enter the holes of the side door 302, thereby cleaning every hole of the side door 302.

[0044] When in use, the operation of the second motor 401 is controlled, the second motor 401 drives the bidirectional screw rod 402 to rotate, and the bidirectional screw rod 402 drives the limit block 403 to move through the bolt, thereby driving the roller 404 to move on the inner side of the fixed plate 408. Because the gear 406 on the outer surface of the roller 404 is meshed with the gear pressure plate 407, when the roller 404 moves, under the action of the gear pressure plate 407, the gear 406 rotates, thereby driving the roller 404 to rotate, so that the roller 404 rotates inside the limit block 403. At this time, the roller 404 drives the brush 405 to rotate. At this time, when a row of brushes 405 is turned out from the holes of the side door 302, the adjacent row of brushes 405 is about to be inserted into the next row of holes of the side door 302. By controlling the reciprocating operation of the second motor 401, the holes of the side door 302 that have been used for a long time are cleaned, so that the tar attached to the holes of the side door 302 and the dust in the air can be cleaned.

[0045] In summary, through the action of the cleaning mechanism 400, the holes of the side door 302 that have been used for a long time are cleaned by the brush 405, so that the subsequent efficiency of secondhand smoke purification is not affected, thereby ensuring that the efficiency of the device in purifying secondhand smoke will not be reduced, thereby extending the service life of the device and solving the problem of blockage of the air inlet of the device after long-term air intake.

[0046] Importantly, it should be noted that the construction and arrangement of the present application shown in a number of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, changes in orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature or number or position of the discrete element may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to an alternative embodiment. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structure. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, the present invention is not limited to a specific embodiment, but extends to a variety of modifications that still fall within the scope of the appended claims. In addition, in order to provide a concise description of the exemplary embodiments, not all features of the actual embodiment (i.e., those features that are not relevant to the best mode currently contemplated for carrying out the invention, or those features that are not relevant to implementing the invention) may be described.

[0047] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A secondhand smoke purification device, characterized in that: include, The support mechanism (100) comprises a support base plate (101), and brake wheels (102) are fixedly mounted on the four bottom corners of the support base plate (101) by means of bolts; A lifting mechanism (200) is fixedly arranged on the top of the supporting bottom plate (101), a filtering mechanism (300) is fixedly arranged on the top of the lifting mechanism (200), and a cleaning mechanism (400) is fixedly arranged in the inner cavity of the filtering mechanism (300).

2. The secondhand smoke purification device according to claim 1, characterized in that: The lifting mechanism (200) comprises a first motor (201) adapted to be mounted on the upper surface of the supporting base plate (101); an output end of the first motor (201) is fixedly sleeved with a first limiting wheel (202) located inside the supporting base plate (101); an outer surface of the first limiting wheel (202) is transmission-connected with a belt (203); a hollow column (204) is fixedly arranged on the top of the supporting base plate (101); a one-way screw rod (205) is rotatably arranged in the inner cavity of the hollow column (204).

3. The secondhand smoke purification device according to claim 2, characterized in that: A second limiting wheel (206) is fixedly sleeved at the bottom of the outer surface of the one-way screw rod (205); a hollow lifting column (207) is threadedly connected to the outer surface of the one-way screw rod (205); fixing strips (208) used in conjunction with the hollow lifting column (207) are fixedly mounted on the inner surface of the hollow column (204) and are symmetrically distributed; a mounting plate (209) is fixedly connected to the top of the hollow lifting column (207) by means of bolts.

4. The secondhand smoke purification device according to claim 3, characterized in that: The one-way screw rod (205) is rotatably connected to the inside of the supporting base plate (101), the second limiting wheel (206) is transmission-connected to the first limiting wheel (202) via a belt (203), and the hollow lifting column (207) is slidably connected to the inner cavity of the hollow column (204).

5. The secondhand smoke purification device according to claim 4, characterized in that: The filtering mechanism (300) comprises a double-layer shell (301) fixedly mounted on the top of the mounting plate (209) by means of bolts, a side door (302) being hingedly connected to one side of the double-layer shell (301), a liquid filling port (303) being fixedly connected to the upper surface of the double-layer shell (301), a liquid discharge port (304) adapted for use with the liquid filling port (303) being fixedly connected to one side of the outer surface of the double-layer shell (301), and limit strips (305) being symmetrically fixedly arranged on the inner surface of the double-layer shell (301).

6. The secondhand smoke purification device according to claim 5, characterized in that: A filter plate (306) is movably inserted inside the double-layer shell (301); an exhaust fan (307) for use with the filter plate (306) is mounted on the bottom of the inner surface of the upper layer of the double-layer shell (301); an exhaust hood (308) for use with the exhaust fan (307) is fixedly arranged on one side of the filter plate (306); a partition plate (309) is fixedly mounted on the inner surface of the double-layer shell (301); and a detector (310) is fixedly mounted on the input end of the exhaust fan (307).

7. The secondhand smoke purification device according to claim 6, characterized in that: The filter plate (306) is slidably connected to the limit bar (305), the exhaust hood (308) is fixedly connected to the detector (310) through a pipeline, and the output end of the exhaust fan (307) passes through the pipeline and extends to the bottom of the side opposite to the partition (309) and the double-layer shell (301).

8. The secondhand smoke purification device according to claim 7, characterized in that: The cleaning mechanism (400) comprises a second motor (401) adapted to be mounted at the bottom of the inner surface of the lower layer of the double-layer shell (301); the output end of the second motor (401) is fixedly connected to a bidirectional screw rod (402); the outer side of the bidirectional screw rod (402) is connected to a limit block (403) via a thread; a roller (404) is rotatably provided on one side of the side door (302); a plurality of brushes (405) are fixedly mounted on the outer surface of the roller (404) and are evenly arranged on the outer side of the roller (404).

9. The secondhand smoke purification device according to claim 8, characterized in that: A gear (406) is fixedly sleeved on the outer surface of the other end of the roller (404); one side of the gear (406) is meshed with a toothed pressure plate (407) fixedly mounted on one side of the inner surface of the lower layer of the double-layer shell (301); and a fixing plate (408) used in conjunction with the roller (404) is symmetrically fixedly mounted on the inner surface of the lower layer of the double-layer shell (301).

10. The secondhand smoke purification device according to claim 9, characterized in that: The other end of the bidirectional screw rod (402) is rotatably connected to the top of the inner surface of the lower layer of the double-layer shell (301), one end of the roller (404) is rotatably connected to the inside of the limit block (403), and the brush (405) is adapted to the air inlet of the side door (302).

Images