Mechanical transmission structure for simulating human smoking

Abstract

The utility model discloses a kind of mechanical transmission structures for simulating human smoking, including bottom shell and push-pull device. Upper cover is installed on bottom shell, fixed seat is installed in bottom shell inner wall, servo motor is installed on fixed seat by motor bracket, servo motor is connected with lead screw nut by lead screw transmission, push-pull device is fixedly connected in bottom shell inner wall, push-pull device is connected with lead screw nut, push-pull device surface and end face are respectively equipped with air inlet check valve and air outlet check valve;Servo motor drives lead screw nut to move back and forth by lead screw, lead screw nut moves in sleeve by being driven by push-pull support, sleeve extracts smoke by air inlet check valve, smoke is discharged from air outlet check valve. Servo motor high-speed rotation can quickly extract smoke, accelerate cigarette burning speed, a large amount of smoke can be extracted in short time, meet different experimental needs. Soft tube can be connected on air outlet check valve, smoke can be guided to the height needed, fire alarm detector can be tested.

Description

Technical Field

[0001] This utility model relates to the field of smoke testing technology, specifically a mechanical transmission structure for simulating human smoking. Background Technology

[0002] In the production of various equipment that require real smoke testing, such as fire alarm systems and medical research, there is a great need for simulated human smoking tests. Therefore, the demand for simulated human smoking devices that are harmless to the human body is also increasing.

[0003] Currently available human smoking simulators all use a continuous smoke intake method, primarily designed to test the effects of smoking on bodily organs. The smoke produced is stored in a sealed environment. However, different applications require varying smoke concentrations, necessitating different smoke volume requirements. For example, some scenarios require smoking three cigarettes within one minute. Since human smoking simulators mimic human smoking, their smoking efficiency is limited, making it relatively difficult to achieve the required smoke volume and concentration for testing purposes. Utility Model Content

[0004] The purpose of this invention is to provide a mechanical transmission structure for simulating human smoking, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a mechanical transmission structure for simulating human smoking, including a bottom shell, a top cover mounted on the bottom shell, a fixed seat mounted on the inner wall of the bottom shell, a servo motor mounted on the fixed seat, and a screw nut connected to the servo motor via a screw drive. The fast response characteristics of the servo motor enable the push-pull device to start and stop quickly, thereby achieving efficient smoke extraction, meeting the needs of large amounts of high-concentration smoke, and suitable for experimental scenarios that require the extraction of large amounts of smoke in a short time, meeting different experimental needs; A push-pull device, which is fixedly connected to the inner wall of the bottom shell and is connected to a lead screw nut; The push-pull device is equipped with an inlet check valve and an outlet check valve on its surface and end face, respectively. A servo motor controls a lead screw to drive the lead screw nut to move back and forth. The lead screw nut drives the push-pull device to operate, so that the flue gas drawn by the inlet check valve is discharged from the outlet check valve, which improves the efficiency of smoke extraction and avoids the mixing and backflow of smoke in the pipeline.

[0006] Furthermore, a limit strip is installed on the fixed base. The limit strip is located on the side of the lead screw nut and can restrict the rotation of the lead screw nut, making the movement of the lead screw nut smoother.

[0007] Furthermore, an ash collection cylinder is installed on the lower part of the bottom shell surface. The pull-out ash collection cylinder can quickly clean up the ash and prevent the ash from spreading into the environment.

[0008] Furthermore, the intake one-way valve is connected to an extraction tube via a flexible hose, and the extraction tube is connected to the cigarette butt, making it less prone to leakage when extracting smoke.

[0009] Furthermore, a U-shaped frame and a fixed frame are respectively provided on the middle and right end of the push-pull surface. The U-shaped frame and the fixed frame are fixedly connected to the bottom shell, so that the push-pull will not move when it is running at high speed, and the smoke extraction stability is good.

[0010] Furthermore, the push-pull device includes a sleeve and a lead screw nut. The lead screw nut is connected to the push-pull bracket. The left end of the sleeve is connected to a first bracket and a second bracket that are interconnected. The first bracket and the second bracket are fixedly connected to the bottom shell. The sleeve and the lead screw nut work together to quickly extract and discharge smoke, and maintenance is convenient.

[0011] Compared with the prior art, the beneficial effects of this utility model are: (1) The servo motor drives the lead screw nut to move back and forth through the lead screw. The lead screw nut moves in the sleeve through the push-pull bracket. The sleeve draws smoke through the inlet one-way valve. The smoke is discharged from the outlet one-way valve. The high-speed rotation of the servo motor can quickly draw smoke and accelerate the burning speed of cigarettes. A large amount of smoke can be drawn in a short time to meet different experimental needs.

[0012] (2) The inlet check valve and the outlet check valve work independently to prevent smoke backflow and ensure that the smoke can only flow in one direction. The smoke enters and exits. When the outlet check valve is connected to a hose, the smoke can be guided to the required height to restore the environment when the human body is smoking. The test can determine the concentration of smoke that triggers the fire alarm detector and more accurately analyze whether the alarm is caused by human influence or a real fire. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the entire utility model; Figure 2 This is a schematic diagram showing the connection between the servo motor and the motor frame of this utility model; Figure 3 This is a schematic diagram of the connection between the lead screw nut and the push-pull bracket of this utility model; Figure 4 This is a schematic diagram showing the lead screw nut and sleeve of this utility model separated; Figure 5 This is a schematic diagram showing the connection between the extraction tube and the smoke replacement mechanism of this utility model.

[0014] In the diagram: 1. Bottom shell; 2. Servo motor; 3. Top cover; 4. Ash collection cylinder; 5. Motor frame; 6. Fixing base; 7. Lead screw nut; 8. Push-pull bracket; 9. First bracket; 10. Second bracket; 11. U-shaped frame; 12. Fixing frame; 13. Lead screw nut; 14. Sleeve; 15. Outlet check valve; 16. Inlet check valve; 17. Lead screw; 18. Limit bar; 19. Piston; 20. Extraction tube; 21. Linear module; 22. Driver; 23. Power supply; 24. Smoke changing mechanism; 25. Heating rod. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Example:

[0017] Please see Figure 1-5 This utility model provides a technical solution: a mechanical transmission structure for simulating human smoking, including a bottom shell 1, an upper cover 3 installed on the bottom shell 1, a hinge plate rotatably installed on the upper cover 3, and after rotating and opening the hinge plate, a cigarette can be inserted into the cigarette changing mechanism 24; A fixing seat 6 is installed on the inner wall of the bottom shell 1, and a servo motor 2 is installed on the fixing seat 6. The servo motor 2 is connected to the lead screw nut 7 through the lead screw 17. A push-pull device is fixedly connected to the inner wall of the bottom shell 1. The push-pull device is connected to the lead screw nut 7. The servo motor 2 can automatically drive the push-pull device to work, so as to realize the rapid extraction of smoke. The push-pull device is equipped with an inlet one-way valve 16 and an outlet one-way valve 15 on its surface and end face, respectively. The servo motor 2 controls the lead screw 17 to drive the lead screw nut 7 to move back and forth. The lead screw nut 7 drives the push-pull device to run so that the smoke drawn by the inlet one-way valve 16 is discharged from the outlet one-way valve 15, realizing the smoke in and out. By connecting the hose to the outlet one-way valve 15, the smoke can be quickly delivered to the designated location.

[0018] In this embodiment, as Figure 3 and Figure 5 As shown, a limit bar 18 is installed on the fixed base 6. The limit bar 18 is located on the side of the lead screw nut 7. The limit bar 18 blocks the rotation of the lead screw nut 7 and improves the smoothness of the movement of the lead screw nut 7. The fixed frame 12, motor frame 5, servo motor 2, lead screw nut 7, lead screw 17, and limit bar 18 form a linear module 21.

[0019] In this embodiment, as Figure 1 and Figure 5 As shown, an ash collection cylinder 4 is installed on the lower part of the surface of the bottom shell 1. The ash collection cylinder 4 is located below the ash cylinder and can collect all the ash, preventing the ash from falling into the bottom shell 1.

[0020] In this embodiment, as Figure 1 and Figure 5 As shown, the intake one-way valve 16 is connected to the extraction pipe 20 via a hose. The linear module 21 controls the translation of the extraction pipe 20 so that the extraction pipe 20 can dock with the smoke exchange mechanism 24, making it convenient for the extraction pipe 20 to extract smoke.

[0021] In this embodiment, as Figure 3 As shown, a U-shaped frame 11 and a fixed frame 12 are respectively provided on the middle and right ends of the push-pull device surface. The U-shaped frame 11 and the fixed frame 12 are fixedly connected to the bottom shell 1. The U-shaped frame 11 and the fixed frame 12 support and fix the sleeve 14, which can ensure that the sleeve 14 will not move and the screw nut 13 moves stably in the sleeve 14.

[0022] In this embodiment, as Figure 4 As shown, the push-pull device includes a sleeve 14 and a lead screw nut 13. The lead screw nut 13 is connected to the lead screw nut 7 through the push-pull bracket 8. The end of the lead screw nut 13 is equipped with a piston 19, which is sealed to the sleeve 14 to stably extract smoke.

[0023] In this embodiment, as Figure 3 As shown, the left end of the sleeve 14 is connected to a first bracket 9 and a second bracket 10 that are connected to each other. The first bracket 9 and the second bracket 10 are fixedly connected to the bottom shell 1 with screws. When the lead screw nut 13 moves in the sleeve 14, the sleeve 14 will not move.

[0024] Specifically, when using it, such as Figure 5 As shown, a rotatable smoke-changing mechanism 24, a heating rod 25, a linear module 21, a power supply 23, and a driver 22 are installed in the bottom shell 1. The smoke-changing mechanism 24 also uses a servo motor 2. The driver 22 controls the operation of the servo motor 2, and the power supply 23 supplies power to the driver 22 and the servo motor 2. Six cigarettes are inserted into the cigarette changing mechanism 24. The linear module 21 controls the extraction tube 20 to connect with the cigarette changing mechanism 24. At the same time, the linear module 21 triggers the switch of the heating rod 25, and the heating rod 25 ignites the cigarettes. Servo motor 2 starts to rotate in both directions. Servo motor 2 controls lead screw nut 7 to move back and forth through lead screw 17. Lead screw nut 7 drives lead screw nut 13 to move through push-pull bracket 8. Sleeve 14 draws out smoke through air inlet one-way valve 16 and extraction pipe 20. Smoke is discharged from air outlet one-way valve 15. When the number of push-pull cycles of the lead screw nut 13 reaches the predetermined value, the servo motor 2 driving the lead screw nut 13 stops working, the linear module 21 controls the extraction tube 20 to separate from the smoke exchange mechanism 24, the smoke exchange mechanism 24 rotates 60 degrees, and the next cigarette contacts the heating rod 25, realizing continuous and rapid extraction of smoke.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mechanical transmission structure for simulating human smoking, characterized in that, include: Bottom shell (1), top cover (3) is installed on the bottom shell (1), fixed seat (6) is installed on the inner wall of the bottom shell (1), servo motor (2) is installed on the fixed seat (6) via motor frame (5), and servo motor (2) is connected to screw nut (7) via screw (17). A push-pull device is fixedly connected to the inner wall of the bottom shell (1) and is connected to the lead screw nut (7); The pusher is equipped with an inlet check valve (16) and an outlet check valve (15) on its surface and end face, respectively. The servo motor (2) controls the lead screw (17) to drive the lead screw nut (7) to move back and forth. The lead screw nut (7) drives the pusher to run so that the flue gas drawn by the inlet check valve (16) is discharged from the outlet check valve (15).

2. The mechanical transmission structure for simulating human smoking according to claim 1, characterized in that: A limiting strip (18) is installed on the fixed seat (6), and the limiting strip (18) is located on the side of the lead screw nut (7).

3. The mechanical transmission structure for simulating human smoking according to claim 1, characterized in that: The bottom shell (1) is equipped with a ash collection cylinder (4) on the lower part of its surface.

4. The mechanical transmission structure for simulating human smoking according to claim 1, characterized in that: The intake check valve (16) is connected to the extraction tube (20) via a hose.

5. The mechanical transmission structure for simulating human smoking according to claim 1, characterized in that: The push-pull device is provided with a U-shaped frame (11) and a fixed frame (12) at the middle and right ends of its surface, respectively, and the U-shaped frame (11) and the fixed frame (12) are fixedly connected to the bottom shell (1).

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