Device for verifying suction capacity of smoking machine

Abstract

The utility model relates to the technical field of cigarette detection, in particular to a smoking machine suction capacity verification device which comprises a liquid soap storage part, a transparent manifold pipe, a first three-way valve, a second three-way valve, a third three-way valve, a negative pressure suction part, a first liquid level sensor and a second liquid level sensor. According to the smoking machine suction capacity verification device, the negative pressure suction piece, the first three-way valve, the second three-way valve and the third three-way valve are arranged, the flowing direction of liquid soap in the liquid soap storage piece can be controlled through the first three-way valve, the second three-way valve and the third three-way valve, automatic wall moistening is achieved, and a single soap film is automatically prepared in a transparent branch pipe; manual wall moistening and film forming are not needed, the operation technical requirement can be lowered, and the defects that the verification process is tedious and errors are prone to occurring due to the defects that an existing full-manual mode is complex in operation, needs repeated operation and is high in technical proficiency degree are overcome.

Description

Technical Field

[0001] This utility model relates to the field of cigarette testing technology, and in particular to a device for verifying the suction capacity of a smoking machine. Background Technology

[0002] A smoking machine is a device used to simulate human smoking, capturing particulate matter produced during cigarette combustion and detecting components such as nicotine and tar through chemical analysis. To ensure the repeatability and comparability of data from each smoking test, national standards stipulate that the standard suction capacity should be (35.0 ± 0.3) ml. Therefore, before each smoking experiment, the suction capacity of each channel (usually 20) of the smoking machine needs to be calibrated and corrected.

[0003] In existing technologies, custom-made soap film flow meters are typically calibrated and corrected entirely manually. Because the glass tube of the soap film flow meter becomes dry when in use due to contact with air, the tube wall is prone to cracking when the soap film moves within the tube, thus requiring lubrication of the tube wall. During lubrication, operators usually use a latex airbag to repeatedly inflate the soap film tank, forcing the soap solution to rise along the glass tube beyond the scale, and then releasing the air to allow the soap solution to flow back, requiring repeated operations. Furthermore, because the soap solution easily generates foam during flow, it is difficult to form a single soap film during calibration. To solve this problem, defoaming is required. This is done by sealing other outlets of the glass tube, using a latex airbag to force the soap solution to the top of the glass tube, and then using other tools to scoop out or remove the foam, requiring repeated operations to completely remove it.

[0004] It is evident that the existing fully manual method is complex to operate, requires repeated operations and a high level of technical proficiency, resulting in a cumbersome and error-prone verification process. Utility Model Content

[0005] This utility model provides a device for verifying the suction capacity of a smoking machine, which solves the problems of the existing fully manual method, which is complicated to operate, requires repeated operation and high technical proficiency, and makes the verification process cumbersome and prone to errors.

[0006] This utility model provides a suction capacity verification device for a smoking machine, comprising: a soap storage component, a transparent manifold, a first three-way valve, a second three-way valve, a third three-way valve, a negative pressure suction component, a first liquid level sensor, and a second liquid level sensor.

[0007] The soap storage container has a storage space for storing soap liquid; the transparent manifold includes a main pipe and a branch pipe, the branch pipe is connected to the main pipe, and one end of the main pipe is connected to the soap storage container; the first port of the first three-way valve is connected to the branch pipe, and the second port of the first three-way valve is connected to the atmosphere; the first port of the second three-way valve is connected to the third port of the first three-way valve; the first port of the third three-way valve is connected to the second port of the second three-way valve, the second port of the third three-way valve is connected to the main pipe, the connection point of the second port of the third three-way valve and the main pipe is located above the connection point of the branch pipe and the main pipe, and the third port of the third three-way valve is connected to the atmosphere; the negative pressure suction device is connected to the third port of the second three-way valve; the first liquid level sensor is located on one side of the main pipe for detecting the liquid level in the main pipe; the second liquid level sensor is located on one side of the branch pipe for detecting the liquid level in the branch pipe.

[0008] The suction capacity calibration device for a smoking machine provided by this utility model also includes a defoaming component, which is disposed inside the branch pipe.

[0009] According to the smoking machine suction capacity verification device provided by this utility model, the defoaming component is located below the second liquid level sensor.

[0010] According to the smoking machine suction capacity verification device provided by this utility model, the branch pipe is provided with a fixing structure for fixing the demister.

[0011] According to the smoking machine suction capacity verification device provided by this utility model, the defoaming component is a defoaming screen.

[0012] According to the smoking machine suction capacity verification device provided by this utility model, one end of the main tube is connected to the bottom of the soap liquid storage component.

[0013] The smoking machine suction capacity calibration device provided by this utility model also includes a liquid replenishment structure, which is connected to the soap liquid storage device and is connected to the atmosphere.

[0014] According to the smoking machine suction capacity verification device provided by this utility model, the soap liquid storage component is a transparent storage component.

[0015] According to the smoking machine suction capacity verification device provided by this utility model, the first three-way valve, the second three-way valve and the third three-way valve are all actuator-driven three-way valves; and / or, the negative pressure suction component is a peristaltic pump.

[0016] The smoking machine suction capacity verification device provided by this utility model also includes a control terminal, wherein the first three-way valve, the second three-way valve, the third three-way valve and the negative pressure suction component are all communicatively connected to the control terminal.

[0017] The suction capacity calibration device for a smoking machine provided by this utility model, by setting up a negative pressure suction component, a first three-way valve, a second three-way valve, and a third three-way valve, can control the flow direction of soap solution in the soap solution storage component through the first three-way valve, the second three-way valve, and the third three-way valve, to achieve automatic wall lubrication and automatic preparation of a single soap film in a transparent manifold tube. It eliminates the need for manual wall lubrication and film formation, reduces the technical requirements for operation, and solves the defects of the existing fully manual method, which is complicated to operate, requires repeated operation and high technical proficiency, and leads to a cumbersome and error-prone calibration process.

[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the suction capacity verification device for a smoking machine provided in an embodiment of this utility model.

[0021] Figure label:

[0022] 1. Soap liquid storage unit; 2. Transparent manifold; 201. Main pipe; 202. Branch pipe; 3. First three-way valve; 4. Second three-way valve; 5. Third three-way valve; 6. Negative pressure suction unit; 7. First liquid level sensor; 8. Second liquid level sensor; 9. Defoaming unit; 10. Liquid replenishment structure; 11. Control terminal. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] In the description of the embodiments of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model according to the specific circumstances.

[0026] In this embodiment of the utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0027] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0028] The following is combined Figure 1 This invention describes the suction capacity calibration device for a smoking machine provided by this utility model.

[0029] See Figure 1 As shown, the smoking machine suction capacity verification device provided in this embodiment of the present invention includes: a soap storage component 1, a transparent manifold 2, a first three-way valve 3, a second three-way valve 4, a third three-way valve 5, a negative pressure suction component 6, a first liquid level sensor 7, and a second liquid level sensor 8.

[0030] The soap storage unit 1 has a storage space for storing soap liquid; the transparent manifold 2 includes a main pipe 201 and a branch pipe 202, the branch pipe 202 is connected to the main pipe 201, and one end of the main pipe 201 is connected to the soap storage unit 1; the first port of the first three-way valve 3 is connected to the branch pipe 202, and the second port of the first three-way valve 3 is connected to the atmosphere; the first port of the second three-way valve 4 is connected to the third port of the first three-way valve 3; the first port of the third three-way valve 5 is connected to the second port of the second three-way valve 4, and the third three-way valve 5 is connected to the second port of the second three-way valve 4. The second port of the three-way valve 5 is connected to the main pipe 201. The connection point between the second port of the third three-way valve 5 and the main pipe 201 is located above the connection point between the branch pipe 202 and the main pipe 201. The third port of the third three-way valve 5 is connected to the atmosphere. The negative pressure suction component 6 is connected to the third port of the second three-way valve 4. The first liquid level sensor 7 is located on one side of the main pipe 201 and is used to detect the liquid level in the main pipe 201. The second liquid level sensor 8 is located on one side of the branch pipe 202 and is used to detect the liquid level in the branch pipe 202.

[0031] The suction capacity calibration device for a smoking machine provided by this utility model, by setting a negative pressure suction component 6, a first three-way valve 3, a second three-way valve 4, and a third three-way valve 5, can control the flow direction of soap solution in the soap solution storage component 1 through the first three-way valve 3, the second three-way valve 4, and the third three-way valve 5, to achieve automatic wall lubrication and automatic preparation of a single soap film in the transparent manifold 2. It eliminates the need for manual wall lubrication and film formation, reduces the technical requirements of operation, and solves the defects of the existing fully manual method, which is complicated to operate, requires repeated operation and high technical proficiency, and leads to a cumbersome and error-prone calibration process.

[0032] Specifically, when using the suction capacity calibration device for a smoking machine... Figure 1 The D port of the transparent manifold 2 shown is connected to the smoking machine or sealed with a sealing plug.

[0033] When the transparent manifold 2 needs wall lubrication, the flow direction is switched by controlling the first three-way valve 3, the second three-way valve 4, and the third three-way valve 5, so that the second three-way valve 4 is connected to the third three-way valve 5, the third three-way valve 5 is connected to the main pipe 201, and the negative pressure suction component 6 is connected to the third three-way valve 5. Figure 1The B and D ports of the transparent manifold 2 shown are closed. Simultaneously, the negative pressure suction device is activated, drawing soap solution through the C port of the transparent manifold 2 and causing it to move upwards along the inner wall of the main pipe 201. When the soap solution passes the first level sensor 7, it moves upwards a set distance. Once it exceeds the scale line, the negative pressure suction device 6 is closed, and the flow direction of the third three-way valve 5 is switched, allowing the C port of the transparent manifold 2 to communicate with the atmosphere. This causes the soap solution to descend and return to the soap solution storage container 1. This operation is repeated multiple times until the soap film in the transparent manifold 2 moves without breaking.

[0034] When the transparent manifold 2 needs to perform membrane formation, the flow direction is switched by controlling the first three-way valve 3, the second three-way valve 4, and the third three-way valve 5, so that the second three-way valve 4 is connected to the third three-way valve 5, the third three-way valve 5 is connected to the main pipe 201, and the negative pressure suction component 6 is connected to the third three-way valve 5. Figure 1 The B and D ports of the transparent manifold 2 shown are closed. Simultaneously, the negative pressure suction device is activated, drawing soap solution through the C port of the transparent manifold 2, causing it to move upwards along the inner wall of the main pipe 201. When the soap solution passes the first liquid level sensor 7, the negative pressure suction device 6 is closed, and the flow direction of the third three-way valve 5 is switched, allowing the C port of the transparent manifold 2 to communicate with the atmosphere. This causes the soap solution to descend and return to the soap solution storage container 1, leaving a soap film at the bifurcation point where the main pipe 201 connects to the branch pipe 202. After maintaining this position for a set time, the flow direction of the first three-way valve 3 and the third three-way valve 5 is switched, allowing the B port of the transparent manifold 2 to communicate with the atmosphere and connecting the negative pressure suction device 6 to the third three-way valve 5. Simultaneously, the negative pressure suction device 6 is activated, drawing the soap film until it reaches the zero mark on the main pipe 201, thus completing one film-forming operation. During the calibration of the smoke extraction machine, each calibration of each channel requires one film-forming operation.

[0035] The soap solution storage unit 1 is used to store the prepared soap solution. It is preferably a box-type storage box made of transparent material to facilitate observation of the stored soap solution level and to ensure that it can be stably placed in the designated position during use, facilitating verification operations. Of course, in some embodiments, the soap solution storage unit 1 may also adopt other materials or structural designs, such as opaque storage containers or storage boxes with liquid level markings, depending on actual needs, and there are no special limitations on this.

[0036] The transparent manifold 2 is preferably made of transparent glass, which ensures visualization of the liquid flow process, allowing operators to monitor the flow status and level changes of the soap solution in real time. Glass also possesses good chemical stability and corrosion resistance, resulting in a long service life. Of course, in some embodiments, the transparent manifold 2 may also be made of transparent plastic (such as polycarbonate or acrylic) or transparent acrylic, etc., without particular limitation.

[0037] The first three-way valve 3, the second three-way valve 4, and the third three-way valve 5 are preferably actuator-driven three-way valves, which can achieve automated control and precise adjustment of the opening and closing state of the fluid channel, thereby controlling the liquid flow direction and allowing the device to switch freely between conditions such as wall lubrication and film formation (or defoaming). Actuator-driven three-way valves control the valve's movement through electric or pneumatic actuators, enabling remote operation and improving the overall system efficiency and automation level. Actuator-driven three-way valves include electric three-way valves and pneumatic three-way valves.

[0038] The negative pressure suction device 6 is preferably a peristaltic pump, which can provide a stable flow rate and precisely control the fluid suction process, enabling precise control of the amount of soap solution suctioned during the calibration process. Of course, in some embodiments, the negative pressure suction device 6 can also be a diaphragm pump, piston pump, etc., without special limitation.

[0039] The first liquid level sensor 7 is located on one side of the main pipe 201, and the second liquid level sensor 8 is located on one side of the branch pipe 202. Since both the main pipe 201 and the branch pipe 202 are made of transparent material, the first liquid level sensor 7 and the second liquid level sensor 8 can be photoelectric liquid level sensors or capacitive liquid level sensors, etc. Among them, the photoelectric liquid level sensor can sense changes in liquid level through the transparent pipe without direct contact with the liquid, and has the advantages of high accuracy, fast response speed, small size, and simple maintenance; the capacitive liquid level sensor can determine the liquid level by sensing changes in the capacitance of the liquid in the pipe, also without direct contact with the liquid, and has high accuracy and strong stability.

[0040] See Figure 1 As shown, according to some embodiments of the present invention, the suction capacity verification device for the smoking machine further includes a defoaming component 9, which is disposed inside the branch pipe 202.

[0041] By installing a demisting component 9 inside the branch pipe 202, the device can be equipped with a demisting function without manual operation, thereby further improving its automation level and reducing the technical requirements for operation.

[0042] Specifically, when the transparent manifold 2 needs to undergo film formation, the flow direction of the first three-way valve 3, the second three-way valve 4, and the third three-way valve 5 is switched, so that the second three-way valve 4 is connected to the branch pipe 202, and the negative pressure suction device 6 is connected to the first three-way valve 3. The C and D ports of the transparent manifold 2 are closed. At the same time, the negative pressure suction device 6 is opened, and soap solution is drawn through the B port of the transparent manifold 2, causing it to move upward along the inner wall of the branch pipe 202. When the soap solution passes the second liquid level sensor 8, the negative pressure suction device 6 is closed, and the flow direction of the first three-way valve 3, the second three-way valve 4, and the third three-way valve 5 is switched, so that the B port of the transparent manifold 2 is connected to the atmosphere. The soap solution descends, and the foam is punctured or blocked by the defoaming device 9. Since the soap solution returning to the soap solution storage device 1 is relatively pure during the descent process, one defoaming operation is completed. In addition, since the foam on the defoaming device 9 is connected to the atmosphere, it will gradually break and dissipate after a short period of time.

[0043] The demister 9 is preferably made of demister mesh, which can effectively intercept foam on the liquid surface through its mesh structure, preventing foam from flowing back into the soap storage container 1. In some embodiments, the demister 9 can also be made of demister cotton, metal mesh, or porous materials, etc., without particular limitation. Demisting cotton, metal mesh, and porous materials can all allow soap solution to pass through, effectively absorb foam and accelerate foam breakage, and have better defoaming performance.

[0044] See Figure 1 As shown, according to some embodiments of the present invention, the demister 9 is located below the second liquid level sensor 8.

[0045] By placing the demister 9 below the second liquid level sensor 8, foam interference with the liquid level sensor's measurement can be effectively prevented, ensuring the accuracy of liquid level detection.

[0046] According to some embodiments of the present invention, the branch pipe 202 is provided with a fixing structure (not shown in the figure) for fixing the demister 9.

[0047] By setting a fixing structure inside the branch pipe 202 to fix the demister 9, the demister 9 can be fixed, ensuring the positional stability of the demister 9 during use and preventing it from shifting vertically, which would affect the demister effect and the accuracy of liquid level detection.

[0048] Specifically, the fixing structure can adopt a slot-type fixing structure or a boss-type fixing structure. The slot-type fixing structure involves a corresponding slot or groove within the branch pipe 202, allowing the demister 9 to be fixed by inserting it into the slot. The boss-type fixing structure involves a radially extending boss structure on the branch pipe 202, on which the demister 9 is placed and secured using adhesive or other auxiliary methods.

[0049] See Figure 1As shown, according to some embodiments of the present invention, one end of the main pipe 201 is connected to the bottom of the soap liquid storage container 1.

[0050] By connecting one end of the main pipe 201 to the bottom of the soap liquid storage unit 1, a stable supply of soap liquid can be ensured, and the supply demand can be met even when the liquid level in the soap liquid storage unit 1 is low.

[0051] See Figure 1 As shown, according to some embodiments of the present invention, the smoking machine suction capacity calibration device further includes a liquid replenishment structure 10, which is connected to the soap liquid storage device 1 and is connected to the atmosphere.

[0052] By setting up the replenishment structure 10, the soap liquid storage unit 1 can be replenished with soap liquid using the replenishment structure 10. Furthermore, by connecting the replenishment structure 10 to the atmosphere, the air pressure inside the replenishment structure 10 can be kept stable, preventing the liquid from flowing unevenly or being replenished unevenly due to air pressure imbalance.

[0053] Specifically, the replenishment structure 10 can be a replenishment tube, a replenishment port, or other structures, and there are no special limitations on this.

[0054] See Figure 1 As shown, according to some embodiments of the present invention, the smoking machine suction capacity verification device further includes a control terminal 11, and the first three-way valve 3, the second three-way valve 4, the third three-way valve 5 and the negative pressure suction component 6 are all communicatively connected to the control terminal 11.

[0055] By setting up the control terminal 11, remote control and monitoring of the first three-way valve 3, the second three-way valve 4, the third three-way valve 5 and the negative pressure suction component 6 can be realized, the conduction paths of the first three-way valve 3, the second three-way valve 4 and the third three-way valve 5 can be switched and the opening and closing of the negative pressure suction component 6 can be controlled.

[0056] In practical implementation, the control terminal 11 can be equipped with wetted wall, defoaming and film-forming buttons, and corresponding wetted wall, defoaming and film-forming programs can be set. When the wetted wall, defoaming and film-forming buttons are pressed respectively, the device can automatically control the conduction path of the first three-way valve 3, the second three-way valve 4 and the third three-way valve 5 according to the preset program and control the opening and closing of the negative pressure suction component 6 to achieve one-button operation and further improve the convenience of calibration.

[0057] The control terminal 11 can be a touch screen interface, a smartphone or tablet application, or an integrated control panel, etc., without any special restrictions.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A device for verifying the suction capacity of a smoking machine, characterized in that, include: A soap liquid storage unit (1) has a storage space formed therein for storing soap liquid; A transparent manifold (2) includes a main pipe (201) and a branch pipe (202), the branch pipe (202) being connected to the main pipe (201), and one end of the main pipe (201) being connected to the soap liquid storage container (1); The first three-way valve (3) has its first port connected to the branch pipe (202) and its second port connected to the atmosphere. The second three-way valve (4) has its first port connected to the third port of the first three-way valve (3); The third three-way valve (5) has its first port connected to the second port of the second three-way valve (4), and its second port connected to the main pipe (201). The connection point between the second port of the third three-way valve (5) and the main pipe (201) is located above the connection point between the branch pipe (202) and the main pipe (201). The third port of the third three-way valve (5) is connected to the atmosphere. Negative pressure suction component (6), the negative pressure suction component (6) is connected to the third port of the second three-way valve (4); The first liquid level sensor (7) is located on one side of the main pipe (201) and is used to detect the liquid level height in the main pipe (201); The second liquid level sensor (8) is located on one side of the branch pipe (202) and is used to detect the liquid level height in the branch pipe (202).

2. The smoking machine suction capacity calibration device according to claim 1, characterized in that, It also includes a defoaming component (9), which is disposed inside the branch pipe (202).

3. The smoking machine suction capacity calibration device according to claim 2, characterized in that, The demister (9) is located below the second liquid level sensor (8).

4. The smoking machine suction capacity calibration device according to claim 2, characterized in that, The branch pipe (202) is provided with a fixing structure for fixing the demister (9).

5. The smoking machine suction capacity calibration device according to claim 2, characterized in that, The demister (9) is a demister screen.

6. The smoking machine suction capacity verification device according to any one of claims 1 to 5, characterized in that, One end of the main pipe (201) is connected to the bottom of the soap storage container (1).

7. The smoking machine suction capacity calibration device according to any one of claims 1 to 5, characterized in that, It also includes a replenishment structure (10), which is connected to the soap liquid storage unit (1) and is connected to the atmosphere.

8. The smoking machine suction capacity verification device according to any one of claims 1 to 5, characterized in that, The soap storage container (1) is a transparent container.

9. The smoking machine suction capacity verification device according to any one of claims 1 to 5, characterized in that, The first three-way valve (3), the second three-way valve (4) and the third three-way valve (5) are all actuator-driven three-way valves; And / or, the negative pressure suction device (6) is a peristaltic pump.

10. The smoking machine suction capacity verification device according to any one of claims 1 to 5, characterized in that, It also includes a control terminal, and the first three-way valve (3), the second three-way valve (4), the third three-way valve (5) and the negative pressure suction component (6) are all connected to the control terminal for communication.

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