CN111189742A - Cigarette suction resistance measuring device - Google Patents
Cigarette suction resistance measuring device Download PDFInfo
- Publication number
- CN111189742A CN111189742A CN202010187560.8A CN202010187560A CN111189742A CN 111189742 A CN111189742 A CN 111189742A CN 202010187560 A CN202010187560 A CN 202010187560A CN 111189742 A CN111189742 A CN 111189742A
- Authority
- CN
- China
- Prior art keywords
- cigarette
- unit
- air
- sleeve
- resistance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N7/00—Analysing materials by measuring the pressure or volume of a gas or vapour
- G01N7/10—Analysing materials by measuring the pressure or volume of a gas or vapour by allowing diffusion of components through a porous wall and measuring a pressure or volume difference
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Manufacturing Of Cigar And Cigarette Tobacco (AREA)
Abstract
The invention discloses a cigarette resistance measuring device, wherein an air exhaust mechanism comprises an air supply unit, a one-way valve, a pressure reducing valve and an air exhaust unit; the flow control mechanism comprises a flow measurement unit and a flow control unit; the cigarette fixing mechanism comprises a cigarette clamping mechanism, a protective cover and a sleeve ventilation unit, wherein the protective cover is provided with a plurality of first air holes communicated with the outside, the diameter of each first air hole is 1-3cm, and the distance between every two adjacent first air holes is 5-8 cm; the detection mechanism includes a temperature detection unit and a pressure detection unit. The cigarette resistance measuring device disclosed by the invention is beneficial to improving the stability of cigarette suction and reducing the influence of temperature on the accuracy of cigarette resistance measurement by arranging the air exhaust mechanism, the flow control mechanism and the cigarette fixing mechanism in a partitioning manner. Moreover, the protective cover of the cigarette fixing mechanism is beneficial to balancing the temperature difference between the outside and the cigarette, thereby effectively eliminating the influence of the temperature on the accuracy of cigarette resistance measurement.
Description
Technical Field
The invention relates to the field of cigarette resistance measurement, in particular to a cigarette resistance measurement device.
Background
The resistance to smoking is an important physical property parameter strictly controlled by cigarette industry enterprises, is closely related to the smoking feeling of consumers, and influences the release amount of main stream smoke such as tar, nicotine, carbon monoxide and the like.
GB/T22838.5-2009 defines the resistance to draw as: "seal the cigarette in the measuring equipment, insert the depth of the output end to 9mm, maintain the flow rate of the output end to 17.5mL/s and exert the negative pressure on the output end under the standard condition of GB/T16447". The temperature indicated by the "standard condition" is 22 ℃, and in the actual measurement process, the temperature is difficult to be strictly stabilized at 22 ℃, and usually fluctuates to some extent.
The existing cigarette resistance is measured by a comprehensive test bench for the physical properties of cigarettes and filter sticks. In order to weaken the influence of temperature on the accuracy of cigarette suction resistance measurement, a suction resistance standard rod is firstly adopted to calibrate the comprehensive test bench, and then the comprehensive test bench is adopted to test cigarette samples. The comprehensive test bench for the physical properties of cigarettes and filter sticks is generally stored in a physical detection laboratory and a rolling and wrapping workshop, wherein the temperature of the laboratory fluctuates within the range of (20-24) DEG C, and the temperature of the rolling and wrapping workshop fluctuates within the range of (23-28) DEG C. Because the temperature of the cigarette sample during testing is inconsistent with the temperature of the suction resistance standard rod during calibration, the influence of the temperature on the accuracy of cigarette suction resistance measurement cannot be effectively eliminated by adopting the suction resistance standard rod for calibration.
Therefore, how to provide a device capable of effectively eliminating the influence of temperature on the accuracy of cigarette resistance measurement becomes a technical problem which needs to be solved urgently in the field.
Disclosure of Invention
The invention aims to provide a new technical scheme of a cigarette resistance measuring device which can effectively eliminate the influence of temperature on the accuracy of cigarette resistance measurement.
The invention provides a cigarette suction resistance measuring device.
The cigarette resistance measuring device comprises an air suction mechanism, a flow control mechanism, a cigarette fixing mechanism and a detection mechanism; wherein the content of the first and second substances,
the air pumping mechanism comprises an air supply unit, a one-way valve, a pressure reducing valve and an air pumping unit, the air supply unit, the one-way valve, the pressure reducing valve and the air pumping unit are sequentially connected, and air flow in the air pumping mechanism sequentially flows to the one-way valve, the pressure reducing valve and the air pumping unit from the air supply unit;
the flow control mechanism comprises a flow measurement unit and a flow control unit, two ends of the flow measurement unit are respectively connected with the flow control unit and the air extraction unit, and air flow in the flow control mechanism flows to the flow measurement unit and the air extraction unit from the flow control unit in sequence;
the cigarette fixing mechanism comprises a cigarette clamping mechanism, a protective cover and a sleeve ventilation unit, the cigarette clamping mechanism comprises a first cigarette clamping unit, a second cigarette clamping unit, a sleeve and a clamping control unit, the first cigarette clamping unit and the second cigarette clamping unit are respectively arranged at two ends of the sleeve, the clamping control unit is set to control the first cigarette clamping unit and the second cigarette clamping unit so as to clamp a cigarette inserted in the sleeve, the flow control mechanism is set to be used for carrying out suction operation on a suction end of the cigarette in the sleeve, a ventilation opening is arranged on the side wall of the sleeve, a plurality of first air holes communicated with the outside are arranged on the protective cover, the diameter of each first air hole is 1-3cm, and the distance between every two adjacent first air holes is 5-8cm, the cigarette clamping mechanism and the cigarettes inserted in the sleeve are positioned in the protective cover, the sleeve ventilation unit is positioned outside the protective cover and is connected with the ventilation port through a pipeline so as to control the communication or separation of the ventilation port and the outside;
the detection mechanism comprises a temperature detection unit and a pressure detection unit, the temperature detection unit is located in the protective cover, the temperature detection unit is arranged to be used for detecting the temperature in the protective cover, and the pressure detection unit is arranged to be used for detecting the pressure change between the flow control mechanism and the suction end of the cigarette inserted in the sleeve.
Optionally, the air supply unit includes an air compressor and an air storage tank, and two ends of the air storage tank are respectively connected with the air compressor and the check valve.
Optionally, the pressure reducing valve is a filtering pressure reducing valve.
Optionally, the air pumping unit is a vacuum generator.
Optionally, first cigarette clamping unit and second cigarette clamping unit are the flexible tube, it is the aspiration pump to press from both sides tight control unit, just it is right to press from both sides tight control unit to set up to be used for first cigarette clamping unit with second cigarette clamping unit bleeds, so that first cigarette clamping unit with second cigarette clamping unit warp, thereby presss from both sides tightly to insert and establishes cigarette in the cover and seal clearance between cover and the cigarette.
Optionally, the first cigarette clamping unit is located at the suction end of the sleeve, and the air suction amount of the first cigarette clamping unit by the clamping control unit is greater than that of the second cigarette clamping unit.
Optionally, the sum of the heights of the first cigarette clamping unit, the second cigarette clamping unit and the sleeve is equal to the height of a filter of a cigarette.
Optionally, a second air hole is further formed in the protective cover, the second air hole is opposite to the sleeve, and the diameter of the second air hole is larger than that of the first air hole.
Optionally, the sleeve ventilation unit is a two-position three-way valve.
Optionally, the detection mechanism further comprises a data processing unit, and the data processing unit is configured to collect and/or process the temperature data detected by the temperature detection unit and the pressure data detected by the pressure detection unit.
The cigarette resistance measuring device disclosed by the invention is beneficial to improving the stability of cigarette suction and reducing the influence of temperature on the accuracy of cigarette resistance measurement by arranging the air exhaust mechanism, the flow control mechanism and the cigarette fixing mechanism in a partitioning manner. Moreover, the protective cover of the cigarette fixing mechanism is beneficial to balancing the temperature difference between the outside and the cigarette, thereby effectively eliminating the influence of the temperature on the accuracy of cigarette resistance measurement.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic structural diagram of an embodiment of a cigarette resistance measuring device of the present disclosure.
Fig. 2 is a schematic flow chart of the cigarette resistance temperature compensation measuring method disclosed in the present disclosure.
The figures are labeled as follows:
the cigarette smoke detector comprises an air compressor-1, an air storage tank-2, a one-way valve-3, a pressure reducing valve-4, an air extracting unit-5, a flow measuring unit-6, a flow control unit-7, a first cigarette clamping unit-8, a second cigarette clamping unit-9, a sleeve-10, a protective cover-11, a first air hole-101, a second air hole-102, a sleeve ventilating unit-12, a temperature detecting unit-13, a pressure measuring unit-14, a data processing unit-15 and a cigarette-01.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
As shown in fig. 1, the present disclosure provides a cigarette resistance measuring device, which includes an air pumping mechanism, a flow control mechanism, a cigarette fixing mechanism and a detecting mechanism.
The air extraction mechanism comprises an air supply unit, a one-way valve 3, a pressure reducing valve 4 and an air extraction unit 5. The air supply unit, the one-way valve 3, the pressure reducing valve 4 and the air extraction unit 5 are sequentially connected, and air flow in the air extraction mechanism sequentially flows to the one-way valve 3, the pressure reducing valve 4 and the air extraction unit 5 from the air supply unit. The air supply unit may be, for example, a pump or an air tank. As shown in fig. 1, the air flow of the air supply unit enters the check valve, then enters the pressure reducing valve 4, and then enters the air suction unit 5 in the direction indicated by the arrow.
The flow rate control mechanism includes a flow rate measurement unit 6 and a flow rate control unit 7. The two ends of the flow measuring unit 6 are respectively connected with the flow control unit 7 and the air extraction unit 5, and the air flow in the flow control mechanism flows from the flow control unit 7 to the flow measuring unit 6 and the air extraction unit 5 in sequence. The flow rate measurement unit 6 may be, for example, a flow meter, and the flow rate control unit 7 may be, for example, a flow rate controller. As shown in fig. 1, the air flows from the flow control unit 7 to the flow measurement unit 6 and then to the air-extracting unit 5 in the direction indicated by the arrow.
In specific implementation, the flow control unit 7 is a device capable of providing a constant flow rate of (17.5 ± 0.3) mL/s. Further, in order to ensure accuracy of flow measurement, the flow measurement unit 6 may be a thermal type flow meter, and the accuracy should be better than 0.5 level.
The cigarette fixing mechanism comprises a cigarette clamping mechanism, a protective cover 11 and a sleeve ventilation unit 12. The cigarette gripping mechanism comprises a first cigarette gripping unit 8, a second cigarette gripping unit 9, a sleeve 10 and a gripping control unit (not shown in the figures). The first cigarette clamping unit 8 and the second cigarette clamping unit 9 are respectively installed at both ends of the sleeve 10. The first cigarette gripping unit 8 and the second cigarette gripping unit 9 may be, for example, elastic sealing rings or a robot arm, etc. In specific implementation, the first cigarette clamping unit 8 and/or the second cigarette clamping unit 9 can be set as a flexible tube which can be inflated or deflated, so that the deformation of the first cigarette clamping unit 8 or the second cigarette clamping unit 9 can be realized through inflation or deflation, and the cigarette 01 in the sleeve 10 can be clamped or released.
The clamping control unit may be used to control the first cigarette clamping unit 8 and the second cigarette clamping unit 9 to clamp a cigarette 01 inserted in the sleeve 10. The gripping control unit may have various embodiments according to the variation of the structure of the first cigarette gripping unit 8 or the second cigarette gripping unit 9. For example, when the first cigarette gripping unit 8 or the second cigarette gripping unit 9 is a robot arm, the gripping control unit may be a motor that drives the robot arm to move. For another example, when the first cigarette clamping unit 8 or the second cigarette clamping unit 9 is a flexible tube, the clamping control unit may be a suction pump.
The flow control mechanism may be used to perform a smoking operation on the smoking end of a cigarette 01 within the sleeve 10. That is, a communicating pipe is provided between the sleeve 10 of the cigarette holding mechanism and the flow control unit 7 so that the cigarette 01 in the sleeve 10 can be sucked.
Vents (not shown) are provided in the sidewall of the sleeve 10. The protective cover 11 is provided with a plurality of first air holes 101 communicating with the outside. The diameter of the first air holes 101 is 1-3cm, and the distance between the adjacent first air holes 101 is 5-8 cm.
The cigarette clamping mechanism and the cigarettes 01 inserted in the sleeve 10 are both positioned in the protective cover 11. The cannula vent unit 12 is located outside the protective cover 11, and the cannula vent unit 12 can be connected with the vent port through a pipe to control the communication or separation of the vent port from the outside. The cannula vent unit 12 may be, for example, a valve or plug, etc. When the open resistance of the cigarette 01 needs to be detected, the sleeve ventilation unit 12 is opened, and the ventilation port of the sleeve 10 is communicated with the outside. When the cigarette 01 needs to be detected, the sleeve ventilation unit 12 is closed, and the ventilation port of the sleeve 10 is separated from the outside.
The detection mechanism includes a temperature detection unit 13 and a pressure detection unit 14. The temperature detecting unit 13 is located in the protection cover 11, and the temperature detecting unit 13 can be used for detecting the temperature in the protection cover 11. The temperature detection unit 13 may be, for example, a thermometer or the like. In order to ensure the accuracy of temperature detection, the extending direction of the temperature detection unit 13 can be perpendicular to the extending direction of the cigarette 01, and the distance between the temperature detection unit 13 and the outer side surface of the tobacco shred end of the cigarette 01 is 0.5-1 cm.
The pressure detection unit 14 may be used to detect a change in pressure between the flow control mechanism and the suction end of a cigarette 01 inserted in the sleeve 10. The pressure detection unit 4 may be, for example, a digital differential pressure gauge or the like. In particular implementations, the accuracy of the digital differential pressure gauge should be better than 0.1. The pressure sensing unit 14 may be disposed generally outside the protective cover 11 and on the conduit between the sleeve 10 and the flow control unit 7.
The cigarette resistance measuring device disclosed by the invention is beneficial to improving the stability of cigarette suction and reducing the influence of temperature on the accuracy of cigarette resistance measurement by arranging the air exhaust mechanism, the flow control mechanism and the cigarette fixing mechanism in a partitioning manner. Moreover, the protective cover 11 of the cigarette fixing mechanism is beneficial to balancing the temperature difference between the outside and the cigarette, thereby effectively eliminating the influence of the temperature on the accuracy of cigarette resistance measurement.
In one embodiment of the cigarette resistance measuring apparatus of the present disclosure, in order to improve stability of smoking a cigarette, the air supply unit includes an air compressor 1 and an air tank 2. Two ends of the air storage tank 2 are respectively connected with the air compressor 1 and the one-way valve 3. In particular implementations, the air compressor 1 may be rotary rather than piston reciprocating.
In one embodiment of the cigarette resistance measuring device of the present disclosure, the pressure reducing valve 4 is a filter pressure reducing valve in order to improve the stability of smoking the cigarette.
In one embodiment of the cigarette resistance measuring device of the present disclosure, in order to improve the stability of smoking the cigarette, the air extracting unit 5 is a vacuum generator.
In one embodiment of the cigarette resistance measuring device of the present disclosure, the first cigarette clamping unit 8 and the second cigarette clamping unit 9 are both flexible tubes. The clamping control unit is a suction pump and can be used for sucking air from the first cigarette clamping unit 8 and the second cigarette clamping unit 9 so as to deform the first cigarette clamping unit 8 and the second cigarette clamping unit 9, thereby clamping the cigarette 01 inserted in the sleeve 10 and closing the gap between the sleeve 10 and the cigarette 01.
In specific implementation, after the cigarette 01 is inserted into the sleeve 10, the clamping control unit can simultaneously suck air from the first cigarette clamping unit 8 and the second cigarette clamping unit 9, so that the first cigarette clamping unit 8 and the second cigarette clamping unit 9 clamp the cigarette 01 tightly, and the gap between the sleeve 10 and the cigarette 01 is closed.
Further, in order to improve the stability of cigarette smoking, the first cigarette clamping unit 8 is located at the smoking end of the sleeve 10, and the air suction amount of the clamping control unit to the first cigarette clamping unit 8 is greater than that to the second cigarette clamping unit 9. The suction end of the sleeve 10 is the end of the sleeve 10 closer to the flow control mechanism in the direction of flow of the gas stream.
In one embodiment of the cigarette resistance measuring device of the present disclosure, the sum of the heights of the first cigarette gripping unit 8, the second cigarette gripping unit 8 and the sleeve 10 is equal to the height of the filter of the cigarette 01. This arrangement is advantageous in ensuring that the filter of the cigarette 01 is fully within the envelope of the sleeve 10, thereby improving the accuracy of the cigarette resistance measurement.
In one embodiment of the cigarette resistance measuring device of the present disclosure, in order to improve the accuracy of cigarette resistance measurement and the stability of cigarette smoking, the protective cover 11 is further provided with a second air hole 102. The second air hole 102 is disposed opposite to the sleeve 10, and the diameter of the second air hole 102 is larger than that of the first air hole 101. When the cigarette is smoked, the second air holes 102 facing the sleeve 10 and the cigarette 01 in the sleeve 10 are more favorable for meeting the smoking requirement of the cigarette 01, so that the accuracy of cigarette resistance measurement is improved.
In one embodiment of the cigarette resistance measuring device of the present disclosure, the casing ventilation unit 12 is a two-position three-way valve in order to more effectively and conveniently control the opening and closing of the ventilation port of the casing 10.
In one embodiment of the cigarette resistance measuring device of the present disclosure, the detection mechanism further includes a data processing unit 15. The data processing unit 15 may be used to collect and/or process temperature data detected by the temperature detection unit 13 and pressure data detected by the pressure detection unit 14. The data processing unit 15 may be, for example, a processing center or a CPU or the like.
The cigarette resistance measuring device can also be applied in combination with a cigarette resistance temperature compensation measuring method, as shown in fig. 2, the cigarette resistance temperature compensation measuring method comprises the following steps:
step S1: adjusting the ambient temperature until the ambient temperature reaches a predetermined temperature TnAnd then, balancing for a period of time. Wherein n is a natural number greater than or equal to 1, and the preset temperature T is gradually increased along with the gradual increase of nnAnd gradually increases. The above-mentioned equilibration time is typically 12 h.
In specific implementation, the temperature T is presetnMay be a standard temperature, i.e., T1It was 22 ℃. With increasing n, the preset temperature TnIncrease of (2)The step length can be increased for equal step length, or can be flexibly set according to actual requirements.
In order to ensure the accuracy of the measured cigarette resistance value, the preset temperature T can be setnIs equal step increase, n may have an upper limit of 4, and T is set to1Set to 22 ℃ and preset temperature TnThe step size of the change of (2). That is, in step S1, T1、T2、T3And T4The temperatures were set at 22 ℃, 24 ℃, 26 ℃ and 28 ℃, respectively.
Further, in step S1, T may be reached at ambient temperature1After equilibration at (22 ℃) for a period of time, the cigarette resistance measuring device was calibrated using a resistance draw standard rod.
Step S2: at different preset temperatures TnThen, the cigarette resistance is measured for N cigarettes for M times respectively, and the measured environment temperature T is obtained when the cigarette resistance is measuredm. The quantity of the cigarettes and the times of measuring the smoking resistance of the cigarettes can be flexibly selected according to actual requirements.
In order to balance the relationship between the detection efficiency and the detection accuracy, N may be set to 5, and M may be set to 3.
Step S3: according to different actually measured environmental temperatures TmAnd (3) measuring the cigarette resistance parameter P (x) to obtain a relation function of the cigarette resistance parameter P (x) and the ambient temperature T. The cigarette resistance parameter p (x) may be, for example, a cigarette resistance value or a cigarette resistance change rate.
Step S4: and obtaining the cigarette resistance correction coefficient k by the relation function of the cigarette resistance parameter P (x) and the ambient temperature T.
Step S5: determination of the cigarette resistance P of a single cigarettexAnd obtaining a measured cigarette draw resistance PxReal time ambient temperature T of timep。
Step S6: according to Ps＝k×(22-Tp)+PxOr Ps＝Px{1+[k×(22-Tp)/100]Calculating to obtain a cigarette suction resistance correction value Ps。
In an embodiment of the cigarette resistance temperature compensation measuring method of the present disclosure, step S3 may specifically be as follows:
step S3-1: volume according to assaySmoke resistance, calculating different measured ambient temperatures TmThe average value of the cigarette smoke resistance values P (a) of the cigarettes is as follows.
Step S3-2: average value of cigarette resistance value P (a) and actually measured environment temperature TmLinear fitting is carried out to obtain a relation function P (a) k of the cigarette resistance value and the ambient temperature T1T+b1Wherein b is1Is a constant.
In this embodiment, step S4 is as follows: the function P (a) k of the relationship between the cigarette resistance value and the ambient temperature T1T+b1Obtaining the correction coefficient k of the cigarette suction resistance1. Step S5 is as follows: determination of the cigarette resistance P of a single cigarettexAnd obtaining a measured cigarette draw resistance PxReal time ambient temperature T of timep. Step S6 is as follows: according to Ps＝k1×(22-Tp)+PxCalculating to obtain the cigarette suction resistance correction value Ps. The cigarette resistance correction value P is obtained by calculationsThe measured cigarette resistance value is compensated and corrected according to the environment temperature measured by the cigarette resistance, the influence of the temperature on the cigarette resistance measurement accuracy is effectively eliminated, and the method has the advantages of strong real-time performance and high accuracy.
In another embodiment of the cigarette resistance temperature compensation measuring method of the present disclosure, step S3 may specifically be as follows:
step S3-1: calculating different actually measured environmental temperatures T according to the measured cigarette resistancemAverage value of the cigarette resistance change rate p (b) of each cigarette.
Step S3-2: average value of cigarette resistance change rate P (b) and measured environment temperature TmLinear fitting is carried out to obtain a relation function P (b) k of the cigarette resistance change rate and the environmental temperature T2T-b2Wherein b is2Is a constant.
In this embodiment, step S4 is as follows: the function P (b) k of the cigarette resistance change rate and the environmental temperature T2T-b2Obtaining the correction coefficient k of the cigarette suction resistance2. Step S5 is as follows: determination of the cigarette resistance P of a single cigarettexAnd obtaining a measured cigarette draw resistance PxReal time ambient temperature of timeDegree Tp. Step S6 is as follows: according to Ps＝Px{1+[k2×(22-Tp)/100]Calculating to obtain a cigarette suction resistance correction value Ps. The cigarette resistance correction value P is obtained by calculationsThe measured cigarette resistance value is compensated and corrected according to the environment temperature measured by the cigarette resistance, the influence of the temperature on the cigarette resistance measurement accuracy is effectively eliminated, and the method has the advantages of strong real-time performance and high accuracy.
It will be appreciated by those skilled in the art that the temperature detection unit 13 can be used to detect the ambient temperature in the cigarette resistance temperature compensation determination method of the present disclosure. The data processing unit 15 of the present disclosure may be configured to process the acquired related data to obtain a cigarette draw resistance correction value Ps。
An embodiment of the cigarette resistance temperature compensation measuring method of the present disclosure is specifically described below:
the ambient temperature was set to 22 ℃ and after reaching the set temperature, the balance was maintained for 12 hours, and the resistance-suction measuring apparatus was calibrated with a resistance-suction standard bar of about 1 kPa. Selecting 5 cigarettes of a certain specification with normal appearance detection, repeatedly measuring the resistance of the 5 cigarettes for 3 times, and recording the actually measured environment temperature at the moment of 22.51 ℃.
Setting the environmental temperature to 24 ℃, 26 ℃ and 28 ℃ in sequence, balancing for 12 hours after the set temperature is reached, respectively repeating the measurement for 3 times on 5 cigarettes with certain specification and brands with normal appearance detection, and recording the actually measured environmental temperature to 24.34 ℃, 26.26 ℃ and 28.07 ℃ in sequence. The effect of temperature on the five cigarette smoke resistance measurements is shown in table 1. The effect of temperature on the rate of change of the draw resistance of five cigarettes is shown in table 2.
TABLE 1 influence of temperature on the measurement of the draw resistance of five cigarettes (unit: Pa)
TABLE 2 influence of temperature on the rate of change of the draw resistance of five cigarettes (unit:%)
| Temperature (. degree.C.) | #1 | # | 2 | # | 3 | # | 4 | # | 5 cigarette | Mean value of |
| 22.51 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | ||||
| 24.34 | 1.25 | 1.06 | 1.08 | 1.60 | 1.15 | 1.23 | ||||
| 26.26 | 1.91 | 1.81 | 2.36 | 2.31 | 2.20 | 2.12 | ||||
| 28.07 | 2.76 | 2.39 | 3.21 | 3.30 | 3.04 | 2.94 |
And performing least square normal fitting on the change rate and the temperature of the cigarette resistance according to the average value of the change rates of the 5 cigarettes at different temperatures of 22.51 ℃, 24.34 ℃, 26.26 ℃ and 28.07 ℃.
For the #1 cigarette, the linear relation between the change rate of the draw resistance and the temperature is P (b) 0.4802T-10.6660, R20.9807; for the #2 cigarette, the linear relation between the change rate of the draw resistance and the temperature is P (b) 0.4253T-9.4447, R20.9820; for the #3 cigarette, the linear relation between the change rate of the draw resistance and the temperature is P (b) 0.5864T-9.5175, R20.9959; for the #4 cigarette, the linear relation between the change rate of the draw resistance and the temperature is P (b) 0.5705T-12.6190, R20.9705; for the #5 cigarette, the linear relation between the change rate of the draw resistance and the temperature is P (b) 0.5474T-12.2470, R2＝0.9959。
Thus, the relation function P (b) 0.5219T-11.6300 of the cigarette resistance change rate and the environmental temperature T is obtained, and R20.9903. Obtaining the cigarette suction resistance correction coefficient k2Is 0.5219.
Taking a single cigarette with the same specification and brand to measure the cigarette suction resistance PxAnd obtaining a measured cigarette draw resistance PxReal time ambient temperature T of timep。
According to Ps＝Px{1+[0.5219×(22-Tp)/100]Correcting the cigarette suction resistance value to be compensated to 22 ℃ under the standard condition to obtain a corrected value Ps。
Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (10)
1. A cigarette resistance measuring device is characterized by comprising an air suction mechanism, a flow control mechanism, a cigarette fixing mechanism and a detection mechanism; wherein the content of the first and second substances,
the air pumping mechanism comprises an air supply unit, a one-way valve, a pressure reducing valve and an air pumping unit, the air supply unit, the one-way valve, the pressure reducing valve and the air pumping unit are sequentially connected, and air flow in the air pumping mechanism sequentially flows to the one-way valve, the pressure reducing valve and the air pumping unit from the air supply unit;
the flow control mechanism comprises a flow measurement unit and a flow control unit, two ends of the flow measurement unit are respectively connected with the flow control unit and the air extraction unit, and air flow in the flow control mechanism flows to the flow measurement unit and the air extraction unit from the flow control unit in sequence;
the cigarette fixing mechanism comprises a cigarette clamping mechanism, a protective cover and a sleeve ventilation unit, the cigarette clamping mechanism comprises a first cigarette clamping unit, a second cigarette clamping unit, a sleeve and a clamping control unit, the first cigarette clamping unit and the second cigarette clamping unit are respectively arranged at two ends of the sleeve, the clamping control unit is set to control the first cigarette clamping unit and the second cigarette clamping unit so as to clamp a cigarette inserted in the sleeve, the flow control mechanism is set to be used for carrying out suction operation on a suction end of the cigarette in the sleeve, a ventilation opening is arranged on the side wall of the sleeve, a plurality of first air holes communicated with the outside are arranged on the protective cover, the diameter of each first air hole is 1-3cm, and the distance between every two adjacent first air holes is 5-8cm, the cigarette clamping mechanism and the cigarettes inserted in the sleeve are positioned in the protective cover, the sleeve ventilation unit is positioned outside the protective cover and is connected with the ventilation port through a pipeline so as to control the communication or separation of the ventilation port and the outside;
the detection mechanism comprises a temperature detection unit and a pressure detection unit, the temperature detection unit is located in the protective cover, the temperature detection unit is arranged to be used for detecting the temperature in the protective cover, and the pressure detection unit is arranged to be used for detecting the pressure change between the flow control mechanism and the suction end of the cigarette inserted in the sleeve.
2. The cigarette resistance measuring device according to claim 1, wherein the air supply unit includes an air compressor and an air tank, and both ends of the air tank are connected to the air compressor and the check valve, respectively.
3. The cigarette resistance-to-draw measuring device of claim 1, wherein the pressure reducing valve is a filter pressure reducing valve.
4. The cigarette resistance-draw assay device of claim 1, wherein the suction unit is a vacuum generator.
5. The cigarette resistance-of-draw assay device of claim 1, wherein the first cigarette clamping unit and the second cigarette clamping unit are both flexible tubes, the clamping control unit is a suction pump, and the clamping control unit is configured to draw air against the first cigarette clamping unit and the second cigarette clamping unit to deform the first cigarette clamping unit and the second cigarette clamping unit to clamp a cigarette inserted in the sleeve and to close a gap between the sleeve and the cigarette.
6. The cigarette resistance-of-draw assay device of claim 5, wherein the first cigarette gripping unit is located at the suction end of the sleeve, and the draw volume of the first cigarette gripping unit by the gripping control unit is greater than the draw volume of the second cigarette gripping unit.
7. The cigarette resistance-of-draw assay device of claim 1, wherein the sum of the heights of the first cigarette gripping unit, the second cigarette gripping unit, and the sleeve is equal to the height of a filter of a cigarette.
8. The cigarette resistance measuring device according to claim 1, wherein a second air hole is further provided on the protective cover, the second air hole is disposed opposite to the sleeve, and the diameter of the second air hole is larger than that of the first air hole.
9. The cigarette resistance-of-draw assay device of claim 1, wherein the sleeve vent unit is a two-position three-way valve.
10. The cigarette resistance measurement device according to any one of claims 1 to 9, wherein the detection mechanism further comprises a data processing unit configured to collect and/or process temperature data detected by the temperature detection unit and pressure data detected by the pressure detection unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010187560.8A CN111189742A (en) | 2020-03-17 | 2020-03-17 | Cigarette suction resistance measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010187560.8A CN111189742A (en) | 2020-03-17 | 2020-03-17 | Cigarette suction resistance measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111189742A true CN111189742A (en) | 2020-05-22 |
Family
ID=70705508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010187560.8A Pending CN111189742A (en) | 2020-03-17 | 2020-03-17 | Cigarette suction resistance measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111189742A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112229465A (en) * | 2020-10-12 | 2021-01-15 | 中国烟草总公司郑州烟草研究院 | Suction resistance standard rod measuring system capable of adjusting volume flow |
| CN112304803A (en) * | 2020-11-13 | 2021-02-02 | 上海烟草集团有限责任公司 | Cigarette dynamic suction resistance detection instrument and method |
| CN113837367A (en) * | 2021-09-24 | 2021-12-24 | 浙江中烟工业有限责任公司 | Cigarette suction resistance online prediction method of wrapping machine based on probabilistic neural network |
| CN112229465B (en) * | 2020-10-12 | 2024-05-31 | 中国烟草总公司郑州烟草研究院 | Suction resistance standard rod measuring system capable of adjusting volume flow |
-
2020
- 2020-03-17 CN CN202010187560.8A patent/CN111189742A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112229465A (en) * | 2020-10-12 | 2021-01-15 | 中国烟草总公司郑州烟草研究院 | Suction resistance standard rod measuring system capable of adjusting volume flow |
| CN112229465B (en) * | 2020-10-12 | 2024-05-31 | 中国烟草总公司郑州烟草研究院 | Suction resistance standard rod measuring system capable of adjusting volume flow |
| CN112304803A (en) * | 2020-11-13 | 2021-02-02 | 上海烟草集团有限责任公司 | Cigarette dynamic suction resistance detection instrument and method |
| CN112304803B (en) * | 2020-11-13 | 2023-02-28 | 上海烟草集团有限责任公司 | Cigarette dynamic suction resistance detection instrument and method |
| CN113837367A (en) * | 2021-09-24 | 2021-12-24 | 浙江中烟工业有限责任公司 | Cigarette suction resistance online prediction method of wrapping machine based on probabilistic neural network |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111307655A (en) | Cigarette resistance temperature compensation measuring method | |
| CN106226000B (en) | A kind of vacuum sealing performance measurement device and method | |
| CN111189742A (en) | Cigarette suction resistance measuring device | |
| CN107655805B (en) | System and method for measuring permeability of low-permeability rock ore particles | |
| CN108225972B (en) | Apparatus and method for determining the size of a leak in a sample | |
| CN111551476B (en) | Gas permeability testing system and method based on differential pressure method | |
| CN213516169U (en) | Compound vacuum calibrating device | |
| JP2996721B2 (en) | How to measure the control cross section of a nozzle | |
| CN112097868B (en) | System and method for calibrating micro-gas flow controller for space | |
| US6962090B2 (en) | Heated stainless steel emissions canister | |
| CN211784936U (en) | Cigarette suction resistance measuring device | |
| CN102243160B (en) | Method for detecting suction resistance of cigar | |
| CN105651337A (en) | Device and method for testing sensitivity and ease degree of electronic cigarette | |
| CN211086029U (en) | Dynamic filter ventilation rate detection device based on suction mode | |
| CN112229455B (en) | Suction resistance standard rod measuring method capable of adjusting volume flow | |
| CN205384051U (en) | Sensitivity of electron cigarette and relaxation degree testing arrangement | |
| CN101614650B (en) | Device for taking and measuring gas in negative-pressure pipelines | |
| CN104132708A (en) | Volume calibration system and method for irregularly-shaped closed container | |
| CN106841482B (en) | A kind of application process of gas chromatograph vacuum sampling device | |
| CN110595979A (en) | Constant flow based dynamic filter tip ventilation rate detection method | |
| CN111307656A (en) | Method for measuring cigarette resistance humidity and atmospheric pressure compensation | |
| CN106706816A (en) | Vacuum sampling device for gas chromatograph | |
| CN110873674B (en) | Device for measuring saturated vapor pressure of solid matter | |
| CN110608985A (en) | Dynamic filter ventilation rate detection device based on suction mode | |
| CN111307654A (en) | Method for measuring absorption resistance humidity and atmospheric pressure compensation of absorption resistance standard rod |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |