Rotation-free suction resistance and ventilation degree measuring device

Abstract

The utility model discloses a suction resistance and ventilation degree measuring device without rotation. The suction resistance and ventilation degree measuring device comprises a cylindrical measuring head, a base used for installing the measuring head, and a plugging mechanism used for plugging the bottom of the measuring head. Two ends of the measuring head are opened, and a detection cavity for mounting a sample branch is arranged in the measuring head; a plurality of rubber sleeve mechanisms are arranged in the detection cavity along the axial direction of the detection cavity, so that when the sample branch is positioned in the detection cavity, each part of the sample branch is isolated in different cavities through the rubber sleeve mechanisms; the base is provided with a measuring hole used for being connected with the measuring head in a matched mode, and the measuring head is inserted into the measuring hole. A discharging through hole is formed in the bottom of the measuring hole; the blocking mechanism comprises a sealing cover and a driving mechanism used for driving the sealing cover to seal the bottom of the discharging through hole. After the sample branch is detected, the measuring head does not need to rotate by 180 degrees, and only the sealing cover needs to be opened to enable the sample branch to fall from the bottom of the measuring head.

Description

Technical Field

[0001] The utility model belongs to the technical field of cigarette measurement, in particular to a device for measuring draw resistance and ventilation. Background Art

[0002] During the production process of cigarettes, samples on the conveyor line (production line) need to be tested. The test parameters include draw resistance, mouthpiece ventilation rate, and cigarette paper ventilation rate.

[0003] The draw resistance of a cigarette is its resistance to airflow. The mouthpiece ventilation rate is the ratio of the amount of air drawn in from the gripped end of the mouthpiece to the junction of the cigarette and filter to the total airflow. The paper ventilation rate is the ratio of the amount of air drawn in through the cigarette paper to the total airflow. These parameters are important factors in controlling the taste, smoke composition, and combustion performance of a cigarette.

[0004] The prior art CN202123429491.6 discloses a device for measuring the resistance to draw and ventilation of a cigarette, comprising a measuring head outer cylinder assembly and a PV measuring head assembly; the measuring head outer cylinder assembly comprises a measuring head outer cylinder, a base and a PV measuring head cover; a cigarette butt placement seat is provided on the base, the top of the cigarette butt placement seat is used to place cigarette butts, air flow holes are provided on the side walls of the cigarette butt placement seat, and connecting holes are provided between the top of the cigarette butt placement seat and the air flow holes; the PV measuring head assembly comprises a PV upper measuring head and a PV lower measuring head; the PV lower measuring head and the base form a resistance to draw measurement space in the measuring head outer cylinder; an air pipe interface is provided on the measuring head outer cylinder, the air pipe interface is connected to the resistance to draw measurement space, and the air pipe interface is connected to an external measuring device.

[0005] In the above-mentioned prior art, the measuring head is connected to a rotating cylinder. During measurement, the sample is loaded into the measuring head through an opening at the top of the measuring head. After the measurement is completed, the rotating cylinder rotates the measuring head 180°, so that the opening at the top faces downward, and the sample is poured out of the measuring head for discharge.

[0006] The above-mentioned material cutting method is relatively complicated and affects the detection efficiency. Utility Model Content

[0007] In view of this, the utility model provides a device for measuring suction resistance and airflow rate that does not require rotation, and can discharge materials without rotating the measuring head during the material discharge process.

[0008] In order to solve the above technical problems, the technical solution of the utility model is to adopt a non-rotating suction resistance and airflow measurement device, which includes a cylindrical measuring head, a base for mounting the measuring head, and a blocking mechanism for blocking the bottom of the measuring head;

[0009] The measuring head is open at both ends, and a detection cavity for mounting a sample is provided therein; a plurality of rubber sleeve mechanisms are provided in the detection cavity along its axial direction, so that when the sample is located in the detection cavity, the rubber sleeve mechanisms isolate different parts of the sample in different cavities;

[0010] The base is provided with a measuring hole for connecting with a measuring head, and the measuring head is inserted into the measuring hole; and a discharge hole is provided at the bottom of the measuring hole;

[0011] The blocking mechanism includes a sealing cover and a driving mechanism for driving the sealing cover to seal the bottom of the discharge through hole.

[0012] As an improvement, the top surface of the cover is a grooved plane, and an O-ring is installed on the top surface of the cover.

[0013] As a further improvement, the driving mechanism includes a slide plate that can move horizontally, and the slide plate is driven by a telescopic cylinder; a lifting cylinder is installed on the slide plate, and the cover is arranged on the lifting cylinder.

[0014] As another further improvement, the invention further comprises a guide block for guiding the slide, wherein the guide block is provided with a rotatable steel ball.

[0015] As an improvement, the measuring head includes a cylinder composed of an upper cylinder and a lower cylinder; a funnel-shaped guide cover is provided at the upper end of the cylinder; an annular step is provided on the lower cylinder; and a pressure ring is also included for pressing the cylinder onto the base using the annular step.

[0016] As an improvement, the rubber sleeve mechanism includes upper, middle, lower rubber sleeve mechanisms and a bottom rubber sleeve mechanism arranged in sequence from top to bottom; the rubber sleeves in the upper, middle, and lower rubber sleeve mechanisms embrace the sample when deflated, and the rubber sleeve in the bottom rubber sleeve mechanism supports the lower end of the sample when deflated.

[0017] As an improvement, the upper rubber sleeve mechanism and the middle rubber sleeve mechanism are respectively arranged on the inner ring surfaces of the two annular sliders; the annular slider can slide axially in the detection cavity; an O-ring is sleeved on the outer wall of the annular slider, and the annular slider uses the O-ring to interfere with the inner wall of the detection cavity to lock the position of the annular slider.

[0018] As an improvement, a funnel-shaped guide ring is provided on the top of the annular sliding block located above.

[0019] As an improvement, the annular slider is arranged in the upper cylinder, and the lower rubber sleeve mechanism and the bottom rubber sleeve mechanism are arranged in the lower cylinder.

[0020] As an improvement, a sensor for sensing the sample is provided below the discharge hole.

[0021] The utility model is beneficial in that:

[0022] Compared to existing measuring devices that rely on flipping the measuring head to discharge material, this new device features an open measuring head at both ends. During measurement, a sealing mechanism seals the bottom of the measuring head to achieve airtightness. After testing, the sealing mechanism opens, allowing the sample to fall out of the measuring head, eliminating the need to rotate the measuring head 180° for discharge. This reduction in rotation speeds up loading and unloading, thereby improving sample testing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0024] Figure 2 It is a schematic cross-sectional structural diagram of the present utility model.

[0025] Figure 3 It is a schematic diagram of the three-dimensional structure of the blocking mechanism.

[0026] Figure 4 This is a schematic diagram of the measuring head after it is cut open.

[0027] Figure 5 This is a schematic diagram of the base after it is partially cut away.

[0028] Markings in the figure:

[0029] 10. Sealing mechanism, 20. Base, 30. Measuring head.

[0030] 11 telescopic cylinder, 12 trachea joint, 13 cylinder mounting spacer, 14 floating joint, 15 slide plate, 16 trachea joint, 17 lifting cylinder, 18 sealing cover, 19 O-ring.

[0031] 21 base body, 22 pressure ring, 23 lower cover, 24 guide block, 25 sensor mounting seat, 26 sensor, 27 air pipe joint, 28 fastening bolt, 29 measuring hole, 210 discharge through hole.

[0032] 31 guide cover, 32 upper tube, 34 guide ring, 35 annular slider, 36 upper rubber sleeve mechanism, 37 annular slider, 38 middle rubber sleeve mechanism, 39 lower rubber sleeve mechanism, 310 bottom rubber sleeve mechanism, 311 lower tube. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with specific implementation methods.

[0034] like Figure 1 、 Figure 2As shown, the present invention provides a device for measuring suction resistance and airflow without rotation, comprising a cylindrical measuring head 30, a base 20 for mounting the measuring head 30, and a blocking mechanism 10 for blocking the bottom of the measuring head 30;

[0035] The measuring head 30 is open at both ends, and a detection cavity for mounting the sample 100 is provided therein; a plurality of rubber sleeve mechanisms are provided along the axial direction of the detection cavity, so that when the sample 100 is located in the detection cavity, the rubber sleeve mechanisms isolate the different parts of the sample in different cavities;

[0036] The base 20 is provided with a measuring hole 29 for connecting with a measuring head 30 , and the measuring head 30 is inserted into the measuring hole 29 ; and a discharge hole 210 is provided at the bottom of the measuring hole 29 ;

[0037] The blocking mechanism 10 includes a sealing cover 18 and a driving mechanism for driving the sealing cover 18 to seal the bottom of the discharge through hole 29 .

[0038] Compared to existing measuring devices that rely on flipping the measuring head to discharge material, the measuring head 30 in the present invention is open at both ends. During measurement, a sealing mechanism 10 seals the bottom of the measuring head 30 to achieve airtightness. After testing, the sealing mechanism 10 opens, allowing the sample 100 to fall out of the measuring head 30, eliminating the need to rotate the measuring head 30 180°. This reduced rotation speed increases loading and unloading, thereby improving sample testing efficiency.

[0039] More specifically, the top surface of the cover 18 in the present invention is a grooved surface, and an O-ring 19 is mounted on the top surface of the cover 18. In some embodiments, the cover 18 is disc-shaped, with a grooved surface at the top for sealing with the outlet of the discharge hole 210. To further enhance airtightness, the top surface of the cover is also provided with an O-ring 19 to strengthen the sealing effect. It is foreseeable that the diameter of the O-ring 19 will be larger than the diameter of the discharge hole 210, so that the O-ring 19 forms an annular sealing band during sealing.

[0040] like Figure 3As shown, in order for the cover 18 to achieve the purpose of blocking and at the same time not block the sample from falling when opened, the cover 18 needs to be telescopically extended and retracted in the horizontal direction and lifted and lowered in the vertical direction. Therefore, the driving mechanism described in this embodiment includes a horizontally movable slide 15, and the slide 15 is driven by a telescopic cylinder 11, and a floating joint 14 is provided between the slide 15 and the telescopic cylinder 11. A lifting cylinder 17 is installed on the slide 15, and the cover 18 is provided on the lifting cylinder 17. The slide 15 is driven by the telescopic cylinder 11 to slide back and forth on the plane, and the cover 18 is driven by the lifting cylinder 17 to lift and lower in the vertical direction. The telescopic cylinder 11 and the lifting cylinder 17 are connected to the air compressor through the trachea joint 12 and the trachea joint 16 respectively. In order to facilitate installation, the telescopic cylinder 11 is fixed on the cylinder mounting pad 13.

[0041] In order to make the slide 15 extend and retract more smoothly, a guide block 24 is also included for guiding the slide 15. The guide block 24 is provided with a rotatable steel ball. The bottom of the slide 15 contacts the guide block 24, and the steel ball slides, which not only ensures that the slide 15 does not deviate, but also makes the movement of the slide 15 smoother.

[0042] like Figure 4 As shown, the measuring head 30 in this embodiment is of a split type, including a cylinder composed of an upper cylinder 32 and a lower cylinder 311; a funnel-shaped guide cover 31 is provided at the upper end of the cylinder for guiding when loading; an annular step is provided on the lower cylinder 311; and a pressure ring 22 is also included for using the annular step to press the cylinder onto the base 20. It can be understood that the pressure ring 22 is fixed by a fastening bolt 28, thereby fixing the measuring head 30 in the measuring hole 29. In this embodiment, the upper cylinder 32 and the lower cylinder 311 can be connected by an interference fit through a sealing ring, and of course they can also be connected by means of threads or other methods. The split upper cylinder 32 and lower cylinder 311 can be quickly disassembled and assembled, making it easy to replace to accommodate samples of different specifications.

[0043] In this embodiment, the rubber sleeve mechanism includes, from top to bottom, an upper rubber sleeve mechanism 36, a middle rubber sleeve mechanism 38, a lower rubber sleeve mechanism 39, and a bottom rubber sleeve mechanism 310. The rubber sleeves in the upper, middle, and lower rubber sleeve mechanisms 36, 38, and 39 encircle the sample 100 during deflation, while the rubber sleeve in the bottom rubber sleeve mechanism 310 supports the lower end (filter end) of the sample 100 during deflation. When inflated, the rubber sleeve mechanism expands, forming a ring with an inner diameter larger than the sample, allowing the sample to pass through. When deflated, the elastic rubber sleeve mechanism contracts, encircling the sample and creating an airtight seal. Furthermore, the bottom rubber sleeve mechanism 310, located at the bottom, prevents the sample 100 from falling out of the detection chamber. Therefore, it is located at the bottom 100 of the sample and does not encircle it.

[0044] To facilitate adjustment of the spacing between the rubber sleeves, in this embodiment, the upper rubber sleeve mechanism 36 and the middle rubber sleeve mechanism 38 are disposed on the inner annular surfaces of the annular slider 35 and the annular slider 37, respectively. The annular sliders are axially slidable within the detection cavity. O-rings are fitted around their outer walls, creating an interference fit between the O-rings and the inner wall of the detection cavity, locking the annular sliders in place. By pushing the annular sliders axially within the detection cavity, the spacing between the upper rubber sleeve mechanism 36 and the middle rubber sleeve mechanism 38, as well as between the middle rubber sleeve mechanism 38 and the lower rubber sleeve mechanism 39, can be adjusted, thereby forming sealed cavities of varying lengths for testing samples of varying specifications.

[0045] In order to further play a guiding role, a funnel-shaped guide ring 34 is provided at the top of the annular slider located above.

[0046] More specifically, the annular slider 35 and the annular slider 37 are arranged in the upper tube 32, and the lower rubber sleeve mechanism 39 and the bottom rubber sleeve mechanism 310 are arranged in the lower tube 311. This allows the upper rubber sleeve mechanism 36 and the middle rubber sleeve mechanism 38 as well as the lower rubber sleeve mechanism 39 and the bottom rubber sleeve mechanism 310 to be replaced very quickly.

[0047] like Figure 5 As shown, the base 20 includes a base body 21, the bottom of which is provided with a lower cover 23. The base body 23 is provided with an air pipe joint 27, which is communicated with the detection cavity for monitoring the suction resistance and ventilation degree.

[0048] In addition, in order to sense whether the sample 100 has fallen out of the detection chamber, a sensor 26 for sensing the sample 100 is provided below the discharge hole 210 . The sensor 26 is provided on the sensor mounting seat 25 .

[0049] During operation, the rubber sleeves are deflated, and the cover 18 seals the opening of the discharge hole 210, creating an airtight seal. After testing, the cover 18 is opened, and all rubber sleeves are inflated, allowing the sample 100 to fall from the test chamber through the discharge hole 210. To accelerate the drop, a ventilation test airflow can be activated to blow the sample 100 out of the test chamber.

[0050] The above are merely preferred embodiments of the present invention. It should be noted that the above preferred embodiments should not be construed as limiting the present invention. The scope of protection of the present invention shall be determined by the scope defined in the claims. Persons skilled in the art will appreciate that improvements and modifications may be made without departing from the spirit and scope of the present invention, and such improvements and modifications shall also be considered within the scope of protection of the present invention.

Claims

1. A device for measuring suction resistance and airflow without rotation, characterized in that: It includes a cylindrical measuring head, a base for mounting the measuring head, and a blocking mechanism for blocking the bottom of the measuring head; The measuring head is open at both ends, and a detection cavity for mounting a sample is provided therein; a plurality of rubber sleeve mechanisms are provided in the detection cavity along its axial direction, so that when the sample is located in the detection cavity, the rubber sleeve mechanisms isolate different parts of the sample in different cavities; The base is provided with a measuring hole for connecting with a measuring head, and the measuring head is inserted into the measuring hole; and a discharge hole is provided at the bottom of the measuring hole; The blocking mechanism includes a sealing cover and a driving mechanism for driving the sealing cover to seal the bottom of the discharge through hole.

2. The device for measuring the resistance to draw and airflow without requiring rotation according to claim 1, wherein: The top surface of the sealing cover is a grooved plane, and an O-shaped sealing ring is installed on the top surface of the sealing cover.

3. The device for measuring the resistance to draw and airflow without requiring rotation according to claim 1, wherein: The driving mechanism includes a slide plate capable of horizontal movement, and the slide plate is driven by a telescopic cylinder; a lifting cylinder is installed on the slide plate, and the sealing cover is arranged on the lifting cylinder.

4. The device for measuring the resistance to draw and airflow without requiring rotation according to claim 3, wherein: The utility model also comprises a guide block for guiding the slide plate, and the guide block is provided with a rotatable steel ball.

5. The device for measuring the resistance to draw and airflow without requiring rotation according to claim 1, wherein: The measuring head includes a cylinder body composed of an upper cylinder and a lower cylinder; a funnel-shaped guide cover is provided at the upper end of the cylinder body; an annular step is provided on the lower cylinder; and a pressure ring is further provided for pressing the cylinder body onto the base using the annular step.

6. The device for measuring the resistance to draw and airflow without requiring rotation according to claim 5, characterized in that: The rubber sleeve mechanism includes upper, middle, lower rubber sleeve mechanisms and a bottom rubber sleeve mechanism which are arranged in sequence from top to bottom; wherein the rubber sleeves in the upper, middle, and lower rubber sleeve mechanisms embrace the sample when deflated, and the rubber sleeve in the bottom rubber sleeve mechanism supports the lower end of the sample when deflated.

7. The device for measuring the resistance to draw and airflow without requiring rotation according to claim 6, wherein: The upper rubber sleeve mechanism and the middle rubber sleeve mechanism are respectively arranged on the inner ring surfaces of the two annular sliders; the annular slider can slide axially in the detection cavity; an O-ring is sleeved on the outer wall of the annular slider, and the annular slider uses the O-ring to interfere with the inner wall of the detection cavity to lock the position of the annular slider.

8. The device for measuring the resistance to draw and airflow without requiring rotation according to claim 7, wherein: A funnel-shaped guide ring is provided on the top of the annular sliding block located above.

9. The device for measuring the resistance to draw and airflow without requiring rotation according to claim 7, wherein: The annular sliding block is arranged in the upper cylinder, and the lower rubber sleeve mechanism and the bottom rubber sleeve mechanism are arranged in the lower cylinder.

10. The device for measuring the resistance to draw and airflow without requiring rotation according to claim 1, wherein: A sensor for sensing the sample is provided below the discharge through hole.

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