Standard rod assembly with adjustable suction resistance

Abstract

The utility model discloses a draw-resistance-adjustable standard rod assembly which comprises at least two draw-resistance standard rods of the same structure and at least one connecting piece, and the adjacent draw-resistance standard rods are connected through the connecting pieces. According to the invention, a plurality of draw resistance standard rods are connected through the connecting pieces according to actual needs to adjust the draw resistance value, so that the draw resistance value is matched with a to-be-calibrated draw resistance detection instrument, and therefore, the self-assembly of the standard rods with different resistance values can be realized according to the actual needs.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of cigarette technology, and more particularly, to a standard rod assembly with adjustable resistance. BACKGROUND

[0002] In the tobacco industry, resistance is one of the key indicators affecting the smoking experience of cigarette products, and the detection of the resistance of cigarette products is usually performed using corresponding test instruments. The standard rod is a measurement standard for cigarette product resistance detection instruments, which can be used to calibrate the resistance detection instrument to ensure the accuracy of the detection value.

[0003] The existing standard rod has a fixed resistance value and cannot be freely adjusted according to different product types. CONTENT OF THE INVENTION

[0004] The present application provides a standard rod assembly with adjustable resistance, which connects multiple resistance standard rods through a connecting piece to adjust the resistance value according to actual needs, so that it matches the resistance detection instrument to be calibrated. Therefore, different resistance standard rods can be self-assembled according to actual needs.

[0005] The present application provides a standard rod assembly with adjustable resistance, which includes at least two resistance standard rods with the same structure and at least one connecting piece, and adjacent resistance standard rods are connected by the connecting piece.

[0006] Preferably, the connecting piece is tubular, and the inner diameter of the connecting piece matches the diameter of the resistance standard rod.

[0007] Preferably, the inner wall of the connecting piece is symmetrically provided with two groups of press-type self-locking structures, and each group of press-type self-locking structures is symmetrically arranged along the circumference of the connecting piece.

[0008] The two ends of the resistance standard rod are provided with a clamping groove corresponding to the position of the press-type self-locking structure.

[0009] Preferably, an annular sealing ring is arranged between the press-type self-locking structure and the end of the connecting piece on the inner wall of the connecting piece.

[0010] Preferably, the resistance standard rod is made of high borosilicate glass, quartz glass, or resin.

[0011] Preferably, the connecting piece is made of metal.

[0012] Preferably, the connecting piece is made of aluminum material.

[0013] Preferably, the connecting piece is made of hard aluminum, aluminum-zinc-magnesium-copper alloy, anti-rust aluminum alloy, aluminum alloy, or cast aluminum alloy.

[0014] Preferably, the annular sealing ring is made of nitrile rubber, hydrogenated nitrile rubber, silicone rubber, fluorine rubber or fluorosilicone rubber.

[0015] Other features and advantages of the present application will become apparent from the following detailed description of illustrative embodiments thereof, taken in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0016] The accompanying drawings incorporated in and forming a part of the specification, illustrate embodiments of the present application and, together with the description, serve to explain the principles of the application.

[0017] Figure 1 Structure diagram of an embodiment of the adjustable resistance standard rod assembly provided by the present application;

[0018] Figure 2 Sectional view of the adjustable resistance standard rod assembly provided by the present application;

[0019] Figure 3 Sectional view of the adjustable resistance standard rod provided by the present application;

[0020] Figure 4 Perspective view of the connecting piece provided by the present application. DETAILED DESCRIPTION

[0021] Various exemplary embodiments of the present application will now be described in detail with reference to the figures. It should be noted that the relative arrangements, numerical expressions, and values of the components and steps set forth in these embodiments are not limiting to the scope of the present application unless otherwise specifically stated.

[0022] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way limiting to the scope of the application or its applications or uses.

[0023] Techniques, methods, and apparatus known to those of ordinary skill in the relevant art can not be discussed in detail herein, but should be considered as part of the specification, where appropriate.

[0024] In all of the examples shown and discussed herein, any specific values should be interpreted as merely illustrative and not as a limitation. Thus, other examples of the exemplary embodiments can have different values.

[0025] The present application provides an adjustable resistance standard rod assembly, which connects multiple resistance standard rods through connecting pieces according to actual needs to adjust the resistance value so as to match the resistance detection instrument to be calibrated.

[0026] The standard rod assembly with adjustable suction resistance provided in the application comprises at least two suction resistance standard rods with the same structure and at least one connecting piece, and adjacent suction resistance standard rods are connected through the connecting piece, so that the self-assembly of standard rods with different resistance values can be realized according to actual needs.

[0027] As shown in the embodiment shown in the drawings, Figures 1-2 The standard rod assembly comprises two first suction resistance standard rods 10, two second suction resistance standard rods 20 and one connecting piece 30.

[0028] As an embodiment, as shown in the drawings, Figure 1 and 4 The connecting piece 30 is in a tubular shape, the inner diameter of the connecting piece 30 matches the diameter of the suction resistance standard rod 10, and the ends of the two suction resistance standard rods are inserted from the two ends of the connecting piece 30 to realize the connection of the two.

[0029] As shown in the drawings, Figure 4 The inner wall of the connecting piece 30 is symmetrically provided with two groups of press-type self-locking structures 32, and each group of press-type self-locking structures 32 is symmetrically arranged along the circumference of the connecting piece.

[0030] Figure 3 A sectional view of the first suction resistance standard rod 10 is shown. As shown in the drawings, Figure 3 The two ends of the first suction resistance standard rod 10 are provided with clamping grooves 12 corresponding to the positions of the press-type self-locking structures 32, and after connection, the press-type self-locking structures 32 are inserted into the clamping grooves 12 to fix the suction resistance standard rod on the connecting piece 30, so as to ensure that the connection is tight and not easy to fall off.

[0031] As an embodiment, the connecting piece 30 is made of metal material.

[0032] Specifically, the connecting piece 30 is made of aviation aluminum material, such as hard aluminum, aluminum-zinc-magnesium-copper alloy, rust-proof aluminum alloy, aluminum alloy or cast aluminum alloy. Among them, the specific gravity of the cast aluminum alloy is small, and the corrosion resistance and heat resistance are high, so it has strong applicability.

[0033] Preferably, an annular sealing ring 31 is arranged between the press-type self-locking structure 32 and the end of the connecting piece 30 on the inner wall of the connecting piece 30, so as to guarantee the air tightness and stability of the connection of the suction resistance standard rod.

[0034] As an embodiment, the annular sealing ring 31 is made of butyronitrile rubber, hydrogenated butyronitrile rubber, silicone rubber, fluorine rubber or fluorosilicone rubber.

[0035] The size and shape of the suction resistance standard rod are similar to those of a cigarette or a filter rod, the pressure drop value has good repeatability under certain conditions, and the measurement uncertainty of the calibration value is not more than 1%. The size, number and distribution of the capillary tubes of the suction resistance standard rod can be reasonably adjusted according to the situation of the product to be detected. For example, Figure 1 and 3As shown, the middle part of the first resistance standard rod 10 is provided with a plurality of capillary tubes 11 extending along the axial direction. After the two resistance standard rods are connected by the connecting piece 30, all the capillary tubes of the two resistance standard rods are aligned with each other, so that each capillary tube is through.

[0036] As an embodiment, the resistance standard rod is made of high borosilicate glass, quartz glass or resin, etc.

[0037] As an embodiment, the resistance standard rod has a design length of 3 cm and a diameter of 0.8 cm, and is uniformly punched with 10 capillary tubes, each having a diameter of 0.2 mm and a single resistance value of 200 Pa.

[0038] Although some specific embodiments of the present application have been described in detail by examples, those skilled in the art should understand that the above examples are only for illustration, but not for limiting the scope of the present application. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A standard rod assembly with adjustable resistance, characterized in that, The connecting piece is tubular, and the inner diameter of the connecting piece matches the diameter of the standard rod.

2. The adjustable resistance standard rod assembly of claim 1, wherein, The inner wall of the connecting piece is symmetrically provided with two groups of press-type self-locking structures, and each group of press-type self-locking structures is symmetrically arranged along the circumference of the connecting piece.

3. The adjustable resistance standard rod assembly of claim 2, wherein, The two end portions of the standard rod are provided with clamping grooves corresponding to the positions of the press-type self-locking structures. The inner wall of the connecting piece is provided with an annular sealing ring between the press-type self-locking structures and the end portions of the connecting piece.

4. The adjustable resistance standard rod assembly of claim 3, wherein, The standard rod is made of high borosilicate glass, quartz glass or resin.

5. The adjustable resistance standard rod assembly of claim 1, wherein, The connecting piece is made of metal material.

6. The adjustable resistance standard rod assembly of claim 1, wherein, The connecting piece is made of aviation aluminum material.

7. The adjustable resistance standard rod assembly of claim 1, wherein, The connecting piece is made of hard aluminum, aluminum-zinc-magnesium-copper alloy, anti-rust aluminum alloy or cast aluminum alloy.

8. The adjustable resistance standard rod assembly of claim 7, wherein, The annular sealing ring is made of butyronitrile rubber, hydrogenated butyronitrile rubber, silicone rubber, fluorine rubber or fluorosilicone rubber.

9. The adjustable resistance standard rod assembly of claim 4, wherein, ​

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