A variable resistance standard rod for adjustable microwell arrays

Abstract

The utility model provides a kind of variable resistance standard stick of adjustable micropore array, including several rotating parts, several capillary inner cores and several partitions;Several rotating parts are connected head to tail to constitute standard stick main body, and several rotating parts are internally provided with through hole in axial direction;The capillary inner core is installed in the through hole of each rotating part, and rotates with each rotating part;The partition is installed between adjacent two rotating parts, and is stationary relative to adjacent capillary inner core;Capillary hole in axial direction is provided on the capillary inner core in annular array, and each capillary hole is distributed in circumferential direction according to set mode, and ventilation window is opened on the partition;In adjacent two rotating parts, by rotating one of rotating parts, the capillary inner core is relatively rotated with adjacent partition, the number of capillary hole opposite ventilation window changes, so that resistance changes.The scheme changes resistance by the adjustment of micropore array.

Description

Technical Field

[0001] This utility model relates to the field of standardization technology, specifically to a variable resistance standard bar with an adjustable micropore array. Background Technology

[0002] Draw resistance is one of the important parameters of cigarettes or filter rods, used to reflect the quality of cigarettes. Draw resistance usually needs to be tested with a draw resistance testing device.

[0003] As a measuring device, the suction resistance testing equipment needs to be calibrated regularly to ensure its accuracy during long-term use. The suction resistance standard rod, as a product with a specific suction resistance value, can be used for the calibration of the suction resistance testing equipment.

[0004] In scenarios requiring relatively high precision, such as laboratories, high-end product development and manufacturing, the accuracy requirements for suction resistance are high. Therefore, the suction resistance standard rods used are mostly made of inert materials such as quartz to give them strong stability. However, quartz standard rods are difficult to manufacture and are easily damaged due to their brittleness. In addition, standard rods need to be used in sets, resulting in high usage costs.

[0005] To improve the flexibility and convenience of using the standard bar, it is necessary to modify the suction resistance standard bar to enable it to have adjustable suction resistance.

[0006] In order to solve the above problems, people have been seeking an ideal technological solution. Utility Model Content

[0007] The purpose of this invention is to address the shortcomings of existing technologies by providing a variable resistance standard bar with an adjustable micropore array that changes the resistance through adjustment of the micropore array.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is: a variable resistance standard rod with an adjustable micropore array, comprising several rotating parts, several capillary cores and several partitions; Several rotating parts are connected end to end to form the main body of the standard rod, and the interior of the several rotating parts is provided with an axially penetrating inner hole; The capillary core is installed in the inner hole of each rotating component and rotates with each rotating component; The partition is installed between two adjacent rotating parts and is stationary relative to the adjacent capillary core. The inner core of the capillary tube is provided with capillary pores arranged in a ring array and extending along the axial direction. Each of the capillary pores is distributed in a predetermined manner along the circumferential direction, and ventilation windows are opened on the partition plate. In two adjacent rotating components, by rotating one of the rotating components, the capillary core rotates relative to the adjacent partition, and the number of capillary pores facing the ventilation window changes, thus changing the suction resistance.

[0009] Based on the above, the rotating component is in the shape of a ring.

[0010] Based on the above, the cross-section of both the outer contour and the inner hole of the rotating component is T-shaped.

[0011] Based on the above, the rotating component includes a plug-in end and an operating end, the outer wall of the plug-in end and the inner wall of the operating end of two adjacent rotating components are rotatably engaged, the capillary inner core is fixedly installed in the inner hole of the plug-in end, and the partition is fixedly installed in the inner hole of the operating end.

[0012] Based on the above, the capillary pore diameters of the capillary cores in adjacent rotating components are different.

[0013] Based on the above, the capillary pores on the inner core of each capillary are evenly distributed in the circumferential direction.

[0014] Based on the above, the capillaries on the inner core of each capillary are divided into several units in the circumferential direction, and the number of capillaries in each unit is different.

[0015] Based on the above, the projected area of ​​each unit is equivalent to the area of ​​the ventilation window opened on the adjacent partition.

[0016] Based on the above, the ventilation window is fan-shaped.

[0017] Based on the above, the outer peripheral surface of the plug-in end and the inner peripheral surface of the operating end are respectively provided with arc grooves and balls, and the outer peripheral surface of the plug-in end and the inner peripheral surface of the operating end are in frictional contact.

[0018] A variable resistance standard bar with an adjustable micropore array, comprising several rotating parts and several capillary cores; Several rotating parts are connected end to end to form the main body of the standard rod, and the interior of the several rotating parts is provided with an axially penetrating inner hole; The capillary inner core is installed in the inner hole of each rotating component and rotates with each rotating component. The adjacent ends of two adjacent capillary inner cores abut together, and the abutment part forms a dynamic sealing structure. The number and diameter of capillary arrays in the inner cores of two adjacent capillaries are different; By rotating the rotating component, the number and diameter of the capillary pores in the inner cores of two adjacent capillaries are changed, thereby altering the suction resistance.

[0019] Based on the above, the number of capillary cores is at least two, one of which has four capillary pores distributed at equal angles, and the other has eight capillary pores distributed at equal angles.

[0020] This utility model has substantial features and progress compared to the prior art. Specifically, this utility model has the following advantages: 1. The standard bar is divided into several rotating parts that rotate with each other at their ends, and these parts are built into an axially permeable inner hole. Several capillary cores are installed in the inner hole, and a partition with ventilation windows is installed in the space between adjacent capillary cores. By designing the micropore array layout of the capillary cores, the number of capillaries that are connected through the ventilation windows changes when adjacent rotating parts rotate relative to each other, thereby changing the suction resistance of the entire standard bar.

[0021] 2. The inner diameter of the capillary pores in each section of the capillary core is different, forming a certain gradient effect. The size of each ventilation window can also be designed to be different, thus making the matching more flexible. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the variable resistance standard bar with adjustable micropore array in Embodiment 1 of this utility model.

[0023] Figure 2 This is a schematic diagram of the rotating disk in Embodiment 1 of this utility model.

[0024] Figure 3 This is a cross-sectional view of AA, BB, and CC in Embodiment 1 of this utility model.

[0025] Figure 4 This is a cross-sectional view of AA, BB, and CC in Embodiment 1 of this utility model.

[0026] Figure 5 This is a schematic diagram of the variable resistance standard bar with adjustable micropore array in Embodiment 2 of this utility model.

[0027] Figure 6 This is a schematic diagram of the structure of the capillary core in the middle and right sides of Embodiment 2 of this utility model.

[0028] In the figure: 1. Rotating component; 2. Capillary inner core; 3. Partition; 11. Insertion end; 12. Operating end; 13. Capillary pore; 14. Ventilation window. Detailed Implementation

[0029] The technical solution of this utility model will be further described in detail below through specific embodiments.

[0030] Example 1 like Figures 1-4 As shown, a variable resistance standard bar with an adjustable micropore array includes several rotating parts 1, several capillary cores 2, and several partitions 3.

[0031] Several rotating parts 1 are connected end to end to form the main body of a standard rod. Each rotating part 1 has an axially penetrating inner hole. The capillary core 2 is installed in the inner hole of each rotating part 1 and rotates with each rotating part 1.

[0032] The partition 3 is installed between two adjacent rotating parts 1 and is stationary relative to the adjacent capillary core 2.

[0033] Specifically, in this embodiment, the rotating component 1 is in the shape of a ring, and the cross-section of the outer contour and the inner hole of the rotating component 1 are both T-shaped. The rotating component 1 includes a plug-in end 11 and an operating end 12. The outer wall of the plug-in end 11 and the inner wall of the operating end 12 of two adjacent rotating components 1 are rotatably engaged. The capillary inner core 2 is fixedly installed in the inner hole of the plug-in end 11, and the partition 3 is fixedly installed in the inner hole of the operating end 12.

[0034] To ensure smooth rotation, in this embodiment, the outer peripheral surface of the plug-in end and the inner peripheral surface of the operating end are respectively provided with arc grooves and balls to form a rotation guide. At the same time, in order to ensure self-locking after rotation adjustment, the outer peripheral surface of the plug-in end and the inner peripheral surface of the operating end are in frictional contact, which has a certain frictional force to restrict rotation.

[0035] In the rotating components located at the beginning and end, either a capillary core or a septum is installed, so that the number of septums and the number of capillary cores are equal throughout the entire standard rod structure.

[0036] The capillary core 2 is provided with capillary pores 13 arranged in a ring array and extending along the axial direction. Each capillary pore 13 is distributed in a predetermined manner along the circumferential direction. The partition 3 is provided with ventilation windows 14. In this embodiment, the ventilation windows 14 are fan-shaped.

[0037] In this embodiment, the capillary inner diameters of the capillary inner cores 2 in adjacent rotating parts 1 are different. In other embodiments, the capillary inner diameters of adjacent capillary inner cores are the same.

[0038] In this embodiment, the meaning of "distributed according to a set method" includes the following: The first type is as follows Figure 3 As shown, the capillaries on the inner core of each capillary are evenly distributed in the circumferential direction, and the number of capillaries that allow air to pass through the ventilation window changes regularly during rotation.

[0039] The second type is as follows Figure 4 As shown, the capillaries on the inner core of each capillary are divided into several units in the circumferential direction. The number of capillaries in each unit is different, and the projected area of ​​each unit is equivalent to the area of ​​the ventilation window opened on the adjacent partition.

[0040] In two adjacent rotating components, by rotating one of the rotating components, the capillary core rotates relative to the adjacent partition, and the number of capillary pores facing the ventilation window changes, thus changing the suction resistance.

[0041] Working principle explanation: The standard rod in this embodiment includes four rotating parts, three capillary cores, and three partitions. The rotation of any rotating part can be performed independently. By rotating the rotating parts, the position of the ventilation window 14 on the partition changes, which changes the number of capillary pores in the capillary core, thereby changing the suction resistance.

[0042] To make the change pattern controllable, a scale can be set on the outside of each rotating component to ensure the accuracy of the rotation.

[0043] Example 2 like Figure 5 and Figure 6 As shown, a variable resistance standard bar with an adjustable micropore array includes several rotating parts 1 and several capillary cores 2.

[0044] Several rotating parts 1 are connected end to end to form the main body of the standard rod, and an axially penetrating inner hole is provided inside the several rotating parts 1.

[0045] The capillary inner core 2 is installed in the inner hole of each rotating component 1 and rotates with each rotating component 1. The adjacent ends of two adjacent capillary inner cores 2 abut together, and the abutment part forms a dynamic sealing structure.

[0046] The number and diameter of the capillary pores 3 array in two adjacent capillary cores 2 are different. Taking this embodiment as an example, there are three capillary cores. The leftmost capillary core has four capillary pores distributed at equal angles, the middle capillary core has four capillary pores distributed at equal angles, and the right capillary core has eight capillary pores distributed at equal angles.

[0047] In a preferred embodiment, the capillary pores on the inner core of the intermediate capillary are divided into two groups: one group with a large diameter and the other with a small diameter, which are distributed alternately and are set to four in each group.

[0048] By rotating the rotating component, the number and diameter of the capillary pores in the inner cores of two adjacent capillaries are changed, thereby altering the suction resistance.

[0049] The main difference between this embodiment and embodiment 1 is that no partition or ventilation window is provided. The air passage is achieved by connecting the end face of the capillary core with the end face, and the suction resistance is changed by controlling the number of air passages.

[0050] The drawback of this structure is that the number of resistance values ​​that can be changed is limited. For example, in the example listed in this embodiment, two resistance values ​​can be changed; in the example listed in the aforementioned preferred embodiment, two resistance values ​​can also be changed.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A variable resistance standard bar with an adjustable micropore array, characterized in that: It includes several rotating parts, several capillary cores, and several partitions; Several rotating parts are connected end to end to form the main body of the standard rod, and the interior of the several rotating parts is provided with an axially penetrating inner hole; The capillary core is installed in the inner hole of each rotating component and rotates with each rotating component; The partition is installed between two adjacent rotating parts and is stationary relative to the adjacent capillary core. The inner core of the capillary tube is provided with capillary pores arranged in a ring array and extending along the axial direction. Each of the capillary pores is distributed in a predetermined manner along the circumferential direction, and ventilation windows are opened on the partition plate. In two adjacent rotating components, by rotating one of the rotating components, the capillary core rotates relative to the adjacent partition, and the number of capillary pores facing the ventilation window changes, thus changing the suction resistance.

2. The adjustable micropore array variable resistance standard rod according to claim 1, characterized in that: The rotating component is in the shape of a ring.

3. The adjustable micropore array variable resistance standard rod according to claim 2, characterized in that: The outer contour and the cross-section of the inner hole of the rotating component are both T-shaped.

4. The variable resistance standard rod with adjustable micropore array according to claim 3, characterized in that: The rotating component includes a plug-in end and an operating end. The outer wall of the plug-in end and the inner wall of the operating end of two adjacent rotating components are rotatably fitted. The capillary inner core is fixedly installed in the inner hole of the plug-in end, and the partition is fixedly installed in the inner hole of the operating end.

5. The adjustable micropore array variable resistance standard bar according to any one of claims 1-4, characterized in that: The capillary pore diameters of the inner cores of the capillaries in adjacent rotating parts are different.

6. The variable resistance standard rod with adjustable micropore array according to claim 5, characterized in that: The capillaries on the inner core of each capillary are evenly distributed in the circumferential direction.

7. The adjustable micropore array variable resistance standard rod according to claim 5, characterized in that: The capillaries on the inner core of each capillary are divided into several units in the circumferential direction, and the number of capillaries in each unit is different.

8. The variable resistance standard bar with adjustable micropore array according to claim 7, characterized in that: The projected area of ​​each unit is equivalent to the area of ​​the ventilation window opened on the adjacent partition; the ventilation window is fan-shaped.

9. The adjustable micropore array variable resistance standard rod according to claim 4, characterized in that: The outer peripheral surface of the plug-in end and the inner peripheral surface of the operating end are respectively provided with arc grooves and balls, and the outer peripheral surface of the plug-in end and the inner peripheral surface of the operating end are in frictional contact.

10. A variable resistance standard bar with an adjustable micropore array, characterized in that: It includes several rotating parts and several capillary cores; Several rotating parts are connected end to end to form the main body of the standard rod, and the interior of the several rotating parts is provided with an axially penetrating inner hole; The capillary inner core is installed in the inner hole of each rotating component and rotates with each rotating component. The adjacent ends of two adjacent capillary inner cores abut together, and the abutment part forms a dynamic sealing structure. The number and diameter of capillary arrays in the inner cores of two adjacent capillaries are different; By rotating the rotating component, the number and diameter of the capillary pores in the inner cores of two adjacent capillaries are changed, thereby altering the suction resistance.

11. The variable resistance standard bar with adjustable micropore array according to claim 10, characterized in that: The number of capillary cores is at least two, one of which has four capillary pores distributed at equal angles, and the other has eight capillary pores distributed at equal angles.

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