Tobacco material true density detection device and detection method

Abstract

The present invention discloses a tobacco material true density detection device and detection method, wherein the device comprises a sealed box, a storage tray, a pressure detection mechanism, a display panel and a cover plate; wherein the sealed box is provided with an interface for connecting a vacuum pump and a joint for injecting an inert gas; the storage tray is arranged at the bottom of the sealed box; the pressure detection mechanism is connected to the storage tray; the display panel is arranged on the sealed box, and the display panel is connected to the pressure detection mechanism; the cover plate is connected to the sealed box, and is used to close the sealed box. The tobacco material true density detection device and detection method provided by the present invention take into account both the solid volume and the micropore volume of the tobacco raw material, and ensure the accuracy of the calculation of the tobacco material true density.

Description

Technical Field

[0001] The invention relates to the technical field of tobacco, and in particular to a device and method for detecting the true density of tobacco materials. Background Art

[0002] True density refers to the actual mass of a solid substance per unit volume when the material is absolutely dense, that is, the density after removing the internal pores or gaps between particles. The current method of measuring true density is generally to use a measuring tool to directly measure the weight and volume of the material, and measure the density of the material based on the weight and volume.

[0003] However, tobacco materials, such as tobacco leaves, tobacco stems, and tobacco shreds, have more micropores, and more gases will penetrate and invade the micropores. In view of the particularity of tobacco materials, when measuring the volume of tobacco materials, it is necessary to retain the volume of the micropore characteristics. The above-mentioned measurement method in the prior art cannot take into account the existence of micropores, which affects the measurement accuracy of the volume of tobacco materials, and further affects the calculation accuracy of the density of tobacco materials. Summary of the invention

[0004] The purpose of the present invention is to provide a tobacco material true density detection device and detection method to solve the above-mentioned problems in the prior art and realize accurate detection of the true density of tobacco shreds.

[0005] The present invention provides a tobacco material true density detection device, which comprises:

[0006] A sealed box body, wherein the sealed box body is provided with an interface for connecting a vacuum pump and a joint for injecting an inert gas;

[0007] A storage tray is arranged at the bottom of the sealed box;

[0008] A pressure detection mechanism connected to the storage tray;

[0009] A display panel is arranged on the sealed box body, and the display panel is connected to the pressure detection mechanism;

[0010] A cover plate is connected to the sealed box body and is used to close the sealed box body.

[0011] The tobacco material true density detection device as described above, wherein preferably, a groove is provided at the bottom of the sealed box, the groove cooperates with the placement plate, and the upper surface of the placement plate is flush with the upper surface of the bottom of the sealed box;

[0012] The pressure detection mechanism is arranged between the groove and the storage tray.

[0013] In the tobacco material true density detection device as described above, preferably, a slide groove is provided on the sealed box body, a slideway is provided on the cover plate, and the slideway is slidably connected to the slide groove.

[0014] In the tobacco material true density detection device as described above, preferably, the inert gas is helium, nitrogen or argon.

[0015] The present invention also provides a method for detecting the true density of tobacco materials, wherein the device for detecting the true density of tobacco materials provided by the present invention is used, and the method comprises the following steps:

[0016] Evacuate the sealed box;

[0017] Injecting a set amount of helium into the sealed box;

[0018] measuring a first volume of helium in the sealed box;

[0019] Putting the tobacco raw materials to be tested on the placing tray in the sealed box;

[0020] Vacuuming the sealed box;

[0021] Injecting the set amount of helium into a sealed box containing tobacco raw materials;

[0022] Measuring a first weight of the tobacco raw material in a sealed box injected with helium;

[0023] Vacuuming the sealed box;

[0024] Measuring the second weight of tobacco raw material under vacuum environment;

[0025] Injecting the set amount of argon gas into a sealed box containing tobacco raw materials;

[0026] Measuring the third weight of the tobacco raw material in a sealed box injected with argon gas;

[0027] measuring a second volume of argon gas in a sealed box containing tobacco material;

[0028] The gas penetration volume into the micropores of the tobacco raw material is obtained according to the following formula:

[0029] V2×ρ 氩 +m1=m2···················(1)

[0030] V2×ρ 氦 +m1=m0···················(2)

[0031] The gas penetration volume is obtained according to formulas (1) and (2):

[0032]

[0033] Where V2 represents the gas penetration volume, ρ 氩 is the density of argon, ρ 氦 is the density of helium, m0 is the first weight, m1 is the second weight, and m2 is the third weight;

[0034] The true density of tobacco raw material is obtained according to the following formula:

[0035]

[0036] Wherein, V0 represents the first volume, V1 represents the second volume, and ρ is the true density of the tobacco raw material.

[0037] The tobacco material true density detection device and detection method provided by the present invention take into account both the solid volume and the micropore volume of the tobacco raw material, thereby ensuring the accuracy of the calculation of the tobacco material true density. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings.

[0039] Figure 1 A schematic diagram of the tobacco material true density detection device provided by an embodiment of the present invention when the cover plate is closed;

[0040] Figure 2 A schematic diagram of the tobacco material true density detection device provided by an embodiment of the present invention when the cover plate is opened;

[0041] Figure 3 for Figure 2 Top view of the .

[0042] Description of reference numerals:

[0043] 100-sealed box 110-connector 120-slide

[0044] 130-Interface 200-Cover 210-Slide

[0045] 300-Display panel 400-Storage tray DETAILED DESCRIPTION

[0046] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the present disclosure and its application or use. The present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present disclosure thorough and complete and to fully express the scope of the present disclosure to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the components and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary and not as limiting.

[0047] The words "first", "second" and similar words used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different parts. The words "include" or "comprises" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements. "Up", "down" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0048] In the present disclosure, when a specific component is described as being located between a first component and a second component, there may or may not be an intermediate component between the specific component and the first component or the second component. When a specific component is described as being connected to other components, the specific component may be directly connected to the other components without an intermediate component, or may not be directly connected to the other components but have an intermediate component.

[0049] All terms (including technical terms or scientific terms) used in the present disclosure have the same meanings as those understood by ordinary technicians in the field to which the present disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, such as general dictionaries, should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined herein.

[0050] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0051] like Figures 1 to 3As shown, an embodiment of the present invention provides a tobacco material true density detection device, which includes a sealed box body 100, a placement tray 400, a pressure detection mechanism, a display panel 300 and a cover plate 200; wherein, the sealed box body 100 is provided with an interface 130 for connecting a vacuum pump and a connector 110 for injecting an inert gas; the placement tray 400 is arranged at the bottom of the sealed box body 100; the pressure detection mechanism is connected to the placement tray 400; the display panel 300 is arranged on the sealed box body 100, and the display panel 300 is connected to the pressure detection mechanism; the cover plate 200 is connected to the sealed box body 100, and is used to close the sealed box body 100.

[0052] When the cover plate 200 closes the sealed box body 100, the interior of the sealed box body 100 is a completely sealed space. After the interface 130 is connected to a vacuum pump, the interior of the sealed box body 100 can be evacuated by the vacuum pump.

[0053] When using the device to measure the density of tobacco raw materials, the measurement can be carried out as follows:

[0054] Step S1, evacuating the sealed box.

[0055] Step S2: injecting a set amount of helium into the sealed box.

[0056] Step S3, measuring a first volume V0 of helium in the sealed box.

[0057] Step S4: placing the tobacco raw material to be tested on the storage tray in the sealed box.

[0058] Step S5, evacuating the sealed box.

[0059] Step S6: injecting the set amount of helium into the sealed box containing the tobacco raw material.

[0060] Step S7, measuring the first weight m0 of the tobacco raw material in the sealed box injected with helium.

[0061] Step S8, evacuating the sealed box.

[0062] Step S9, measuring the second weight m1 of the tobacco raw material under vacuum environment.

[0063] Step S10: injecting the set amount of argon gas into the sealed box containing the tobacco raw material.

[0064] Step S11, measuring the third weight m2 of the tobacco raw material in the sealed box injected with argon gas.

[0065] Step S12, measuring the second volume V1 of the argon gas in the sealed box containing the tobacco raw material.

[0066] Step S13, obtaining the gas penetration volume V2 that penetrates into the micropores of the tobacco raw material according to the following formula:

[0067] V2×ρ 氩 +m1=m2···················(1)

[0068] V2×ρ 氦 +m1=m0···················(2)

[0069] The gas penetration volume V2 is obtained according to formulas (1) and (2):

[0070]

[0071] Where V2 represents the gas penetration volume, ρ 氩 is the density of argon, ρ 氦 is the density of helium, m0 is the first weight, m1 is the second weight, and m2 is the third weight.

[0072] It should be noted that the micropores on the tobacco material are very fine, which will cause the helium or argon molecules in the sealed box to be adsorbed on the tobacco material in the micropores and become part of the tobacco material. When the amount of tobacco material is large, the weight of the helium or argon adsorbed in the micropores of the tobacco material will be detected by the pressure detection mechanism. At this time, the weight data output by the pressure detection mechanism is the sum of the weight of the fixed part of the tobacco material and the argon or helium in the micropores. The surface of the tobacco material generally does not have micropore features, so the argon or helium outside the tobacco material in the sealed box cannot be adsorbed on the surface of the tobacco material, but diffuses in the sealed box, and its weight cannot be detected by the pressure detection mechanism.

[0073] Step S14: Obtain the density of the tobacco raw material according to the following formula:

[0074]

[0075] Wherein, V0 represents the first volume, V1 represents the second volume, and ρ is the true density of the tobacco raw material.

[0076] It can be understood that, when the air pressure in the sealed box is constant, both the first volume V0 and the second volume V1 can be directly measured by existing gas detection equipment.

[0077] It should be noted that in the above formula (3), V0-V1+V2 is the actual volume of the tobacco material, wherein V0-V1 represents the volume of the fixed part of the tobacco material, and V2 is the volume of the gas infiltrated into the micropores of the tobacco material. Therefore, V0-V1+V2 is the combined volume of the fixed part and the micropore part of the tobacco material.

[0078] Therefore, compared with the prior art, the tobacco material true density detection device provided by the embodiment of the present invention takes into account both the solid volume and the micropore volume of the tobacco raw material, thereby ensuring the accuracy of the calculation of the tobacco material true density.

[0079] Furthermore, the bottom of the sealed box is provided with a groove, the groove matches the placement tray, and the upper surface of the placement tray is flush with the upper surface of the bottom of the sealed box; the pressure detection mechanism is arranged between the groove and the placement tray. Thus, it is possible to avoid the pressure detection mechanism being arranged above the bottom of the sealed box and occupying the volume of the internal space of the sealed box, thereby affecting the calculation of the volume of the tobacco material.

[0080] Furthermore, in order to facilitate opening or closing of the cover, a slide groove 120 may be provided on the sealed box body, and a slide track 210 may be provided on the cover 200 , and the slide track 210 is slidably connected to the slide groove 120 .

[0081] The inert gas may be helium, nitrogen or argon.

[0082] The embodiment of the present invention further provides a method for detecting the true density of tobacco materials, which uses the tobacco material true density detection device provided by any embodiment of the present invention, and the method comprises the following steps:

[0083] Step S1, evacuating the sealed box.

[0084] Step S2: injecting a set amount of helium into the sealed box.

[0085] Step S3, measuring a first volume V0 of helium in the sealed box.

[0086] Step S4: placing the tobacco raw material to be tested on the storage tray in the sealed box.

[0087] Step S5, evacuating the sealed box.

[0088] Step S6: injecting the set amount of helium into the sealed box containing the tobacco raw material.

[0089] Step S7, measuring the first weight m0 of the tobacco raw material in the sealed box injected with helium.

[0090] Step S8, evacuating the sealed box.

[0091] Step S9, measuring the second weight m1 of the tobacco raw material under vacuum environment.

[0092] Step S10: injecting the set amount of argon gas into the sealed box containing the tobacco raw material.

[0093] Step S11, measuring the third weight m2 of the tobacco raw material in the sealed box injected with argon gas.

[0094] Step S12, measuring the second volume V1 of the argon gas in the sealed box containing the tobacco raw material.

[0095] Step S13, obtaining the gas penetration volume V2 that penetrates into the micropores of the tobacco raw material according to the following formula:

[0096] V2×ρ 氩 +m1=m2···················(1)

[0097] V2×ρ 氦 +m1=m0···················(2)

[0098] The gas penetration volume V2 is obtained according to formulas (1) and (2):

[0099]

[0100] Where V2 represents the gas penetration volume, ρ 氩 is the density of argon, ρ 氦 is the density of helium, m0 is the first weight, m1 is the second weight, and m2 is the third weight.

[0101] Step S14: Obtain the density of the tobacco raw material according to the following formula:

[0102]

[0103] Wherein, V0 represents the first volume, V1 represents the second volume, and ρ is the true density of the tobacco raw material.

[0104] It can be understood that, when the air pressure in the sealed box is constant, both the first volume V0 and the second volume V1 can be directly measured by existing gas detection equipment.

[0105] The tobacco material true density detection device and detection method provided by the embodiment of the present invention take into account both the solid volume and the micropore volume of the tobacco raw material, thereby ensuring the accuracy of the calculation of the tobacco material true density.

[0106] So far, various embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

[0107] Although some specific embodiments of the present disclosure 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 illustration only and are not intended to limit the scope of the present disclosure. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. A method for detecting the true density of tobacco materials, characterized in that: The method is implemented by using a tobacco material true density detection device, which includes: a sealed box body, on which an interface for connecting a vacuum pump and a joint for injecting an inert gas are provided; a storage tray, which is arranged at the bottom of the sealed box body; a pressure detection mechanism, which is connected to the storage tray; a display panel, which is arranged on the sealed box body, and the display panel is connected to the pressure detection mechanism; a cover plate, which is connected to the sealed box body and is used to close the sealed box body; The method comprises the following steps: Evacuate the sealed box; Injecting a set amount of helium into the sealed box; measuring a first volume of helium in the sealed box; Putting the tobacco raw materials to be tested on the placing tray in the sealed box; Vacuuming the sealed box; Injecting the set amount of helium into a sealed box containing tobacco raw materials; Measuring a first weight of the tobacco raw material in a sealed box injected with helium; Vacuuming the sealed box; Measuring the second weight of tobacco raw material under vacuum environment; Injecting the set amount of argon gas into a sealed box containing tobacco raw materials; Measuring the third weight of the tobacco raw material in a sealed box injected with argon gas; measuring a second volume of argon gas in a sealed box containing tobacco material; The gas penetration volume into the micropores of the tobacco raw material is obtained according to the following formula: ··················（1） ··················（2） The gas penetration volume is obtained according to formulas (1) and (2): ； in, is the gas penetration volume, is the density of argon, is the density of helium, is the first weight, is the second weight, is the third weight; The true density of tobacco raw material is obtained according to the following formula: ； in, represents the first volume, represents the second volume, It is the true density of tobacco raw material.

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