CN216771510U - Filter rod detector based on near infrared spectrum - Google Patents

Abstract

The utility model discloses a filter stick detector based on a near infrared spectrum, which comprises a machine body, a carrier and a spectrum acquisition module, wherein the carrier is externally arranged on the machine body, an acquisition channel is arranged between the carrier and the machine body, and the spectrum acquisition module is arranged in the machine body and can be used for carrying out spectrum acquisition on an object to be detected extending out of the acquisition channel; the carrier is just right the collection passageway is provided with clamping structure, makes clamping structure's centre gripping hole can just right the collection passageway makes clamping structure can follow the carrier gets into the determinand centre gripping of collection passageway stabilizes the gesture of determinand in carrying out the spectrum collection process. The portable sampling device adopts a portable structural design, can conveniently sample the filter stick sample in a production workshop, and realizes the field rapid detection of the content of triacetyl glycerine in the filter stick in the production workshop.

Description

Filter rod detector based on near infrared spectrum

Technical Field

The utility model belongs to the technical field of near-infrared rapid detection, and particularly relates to a filter stick detector based on a near-infrared spectrum.

Background

The content of the glycerol triacetate serving as a plasticizer and a curing agent in the process of forming the cigarette filter stick can directly influence the hardness, the suction resistance and the filtering effect of the filter stick, and further influence the sensory quality of cigarette smoke. If the content of the glycerol triacetate is too low, the hardness of the filter stick is not enough, and the quality of the filter stick is directly influenced; if the content of the glycerol triacetate is too high, the excessive glycerol triacetate can be transferred into smoke, so that the sensory quality of the cigarette smoke is influenced. Therefore, the content of the triacetyl glycerine is often used as an important index for the quality control of the filter stick, and how to quickly and accurately measure the content of the triacetyl glycerine in the filter stick has important practical significance and popularization and application values for the quality control of the filter stick forming process.

With the rapid development of near infrared spectroscopy analysis technology, especially compared with the traditional detection technology, the near infrared spectroscopy analysis technology has the advantages of no damage to samples, low cost, rapidness and the like, and is more and more favored by domestic and foreign scholars. Many researches show that the near infrared spectrum analysis technology has a good effect on the rapid prediction of the content of triacetin in the filter stick, but most of the near infrared spectrum analysis technology still stays in laboratory researches and cannot be applied in a filter stick production workshop. Therefore, the portable rapid filter stick triacetyl glycerine detector can realize the quality control of the filter stick forming process in a production workshop.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a filter stick detector based on a near infrared spectrum, which has a portable structural design and can conveniently sample a filter stick sample in a production workshop and realize the field rapid detection of the content of triacetyl glycerine in a filter stick in the production workshop.

The technical scheme adopted by the utility model for solving the technical problem is that the utility model provides a filter stick detector based on a near infrared spectrum, which comprises a machine body, a carrier and a spectrum acquisition module, wherein the carrier is externally arranged on the machine body, an acquisition channel is arranged between the carrier and the machine body, and the spectrum acquisition module is arranged in the machine body and can carry out spectrum acquisition on an object to be detected extending out of the acquisition channel; the carrier is just right the collection passageway is provided with clamping structure for clamping structure's centre gripping hole can just right the collection passageway makes clamping structure can be with following the carrier gets into the determinand centre gripping of collection passageway stabilizes the gesture of determinand in carrying out the spectrum collection process.

Furthermore, the machine body also comprises a power supply module and a control processing module, wherein the power supply module comprises a power supply unit, a display unit and a power supply management unit; the control processing module comprises a circuit board, a PC control unit and a touch control unit.

Further, the lamp also comprises a light source module, wherein the light source module comprises a halogen lamp bead; the PC control unit is connected with the halogen lamp beads through a circuit board, the spectrum acquisition module is connected with the PC control unit, and the PC control unit is connected with the touch control unit.

The clamping piece comprises an upper angle plate, a lower angle plate and a connecting part, wherein the connecting part is vertically arranged between the upper angle plate and the lower angle plate, and the angles of the top angles of the upper angle plate and the lower angle plate are the same; the lower angle plate is provided with a limiting block at the position of the outer side edge of the bottom surface, and a driving block at the position of the outer side edge of the front surface.

Further, it is a plurality of the holder circumference distributes and forms with the both sides limit of apex angle laminating butt joint in proper order the clamping structure makes clamping structure divide into upper scute, connection structure, lower floor scute from last to down in proper order.

Furthermore, the carrier further comprises a substrate, a round hole is formed in the center of the substrate corresponding to the collecting channel, a plurality of limiting holes are distributed along the radial direction and circumferentially around the round hole, and the limiting blocks on the lower-layer angle plate can be inserted into the limiting holes in the substrate in a one-to-one correspondence mode, so that the substrate can limit the displacement direction of the lower-layer angle plate.

Furthermore, the carrier further comprises a control handle, the control handle comprises a carrier plate and a rotating shaft, a central hole is formed in the center of the carrier plate, and a plurality of driving holes are circumferentially distributed by taking the central hole as a circle center, so that when the carrier plate is sleeved on the connecting structure of the clamping structure, the driving blocks on the lower-layer angle plate can be correspondingly inserted into the driving holes on the carrier plate one by one; the outer edge of the support plate is provided with a plurality of rotating shafts, and the base plate is correspondingly provided with a plurality of rotating holes, so that the support plate can rotate by taking the round holes of the base plate as the center.

Furthermore, the control handle still includes the handle, the carrier still includes the curb plate, the curb plate encloses to be located form the rampart on the base plate and seted up and rotate the breach, the support plate by rotate in the breach outside extend the handle.

Furthermore, the direction of the driving hole corresponding to the same clamping piece is different from the direction of the limiting hole; the included angle between the direction of the driving hole corresponding to any clamping piece and the direction of the limiting hole is the same; the handle is rotated, so that the center positions of the clamping pieces can form the clamping holes with adjustable apertures, and the periphery of each clamping hole is always shielded by the clamping pieces, so that the clamping structure only has the light transmission property of the clamping holes.

Furthermore, the aperture of the clamping hole is adjustable, so that stable clamping of the object to be detected can be realized, and the spectrum acquisition posture of the object to be detected is ensured.

Furthermore, the carrier also comprises a cover plate, wherein an inlet is formed in the center of the upper plate of the cover plate, and the inlet is opposite to the clamping hole; the upper plywood covers to the side plate, the upper plywood is provided with a limiting column and a fixing column downwards, the fixing column is fixedly connected with the base plate, and the limiting column is used for stopping the rotation of the handle.

The utility model has the beneficial effects that:

the filter stick detector based on the near infrared spectrum can conveniently realize on-site rapid lossless sampling of a filter stick sample so as to complete spectrum data acquisition work, and is convenient for rapid detection of the content of triacetin of a filter stick at the later stage.

Compared with the traditional gravimetric method, saponification titration method, gas chromatography, near infrared spectroscopy (table type) and the like which can not realize the field rapid detection of the filter rod in a production workshop, the rapid detection device can realize the rapid nondestructive detection of the triacetyl glycerine content of the filter rod in the production workshop, is portable, can be suitable for filter rods with various sizes, and realizes the quality control of the filter rod forming process.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the utility model and together with the description, serve to explain the principles of the utility model. In the drawings, like reference numerals are used to indicate like elements. The drawings in the following description are directed to some, but not all embodiments of the utility model. For a person skilled in the art, other figures can be derived from these figures without inventive effort.

FIG. 1 is a block diagram of a filter rod detector based on near infrared spectroscopy in an embodiment of the present invention;

FIG. 2 is a carrier structure diagram of a filter stick detector based on near infrared spectrum according to an embodiment of the present invention;

FIG. 3 is an internal structural view of a carrier of a filter rod testing apparatus based on near infrared spectrum according to an embodiment of the present invention;

FIG. 4 is a bottom structure view of a carrier of a filter rod testing apparatus based on near infrared spectrum according to an embodiment of the present invention;

FIG. 5 is a combined structure diagram of a holder of a filter rod testing apparatus based on near infrared spectrum according to an embodiment of the present invention;

FIG. 6 is a cover plate structure diagram of a filter stick detector based on near infrared spectrum according to an embodiment of the present invention;

FIG. 7 is a block diagram of a control handle of a filter rod maker based on near infrared spectroscopy in accordance with an embodiment of the present invention;

figure 8 is a block diagram of a clamp of a filter rod maker based on near infrared spectroscopy in accordance with an embodiment of the present invention.

In the figure: 1. a body; 2. a carrier; 3. a control handle; 4. a clamping member; 5. a cover plate; 6. a substrate; 7. a drive aperture; 8. a drive block; 9. a limiting block; 21. a side plate; 31. a carrier plate; 32. a handle; 33. a rotating shaft; 34. a central bore; 41. an upper corner plate; 42. a lower corner plate; 43. a connecting portion; 51. a plywood is arranged; 52. a limiting column; 53. fixing a column; 61. rotating the hole; 62. a limiting hole; 511. an inlet; 512. surrounding the aperture.

Detailed Description

In order to more clearly illustrate the embodiments of the present invention and the technical solutions in the prior art, the following description will be made with reference to the accompanying drawings. It is to be understood that the drawings in the following description are merely exemplary of the utility model and that other drawings and embodiments can be derived by those skilled in the art without undue burden. The designation of the design orientation merely indicates the relative positional relationship between the respective members, not the absolute positional relationship.

The embodiment of the utility model provides a filter stick detector based on a near infrared spectrum, and please refer to fig. 1-8, which mainly comprises a machine body 1, a carrier 2 and a spectrum acquisition module, wherein the carrier 2 is externally arranged on the machine body 1, an acquisition channel is arranged between the carrier 2 and the machine body 1, and the spectrum acquisition module is arranged in the machine body 1 and can carry out spectrum acquisition on an object to be detected extending out of the acquisition channel; carrier 2 is just being provided with clamping structure to gathering the passageway for clamping structure's centre gripping hole can just be to gathering the passageway, makes clamping structure can be with getting into the determinand centre gripping of gathering the passageway from carrier 2, stabilizes the gesture of determinand in carrying out the spectrum collection process.

The carrier 2 is externally arranged outside the machine body 1, and the machine body 1 at least comprises a power supply module, a control processing module and a light source module. The power supply module comprises a power supply unit, a display unit and a power supply management unit; the control processing module comprises a circuit board, a PC control unit and a touch control unit, and the light source module can be a halogen lamp bead.

The touch control unit can be a touch screen and can be arranged in a way of distinguishing from the display unit.

The PC control unit is connected with the halogen lamp beads through the circuit board, the spectrum acquisition module is connected with the PC control unit, and the PC control unit is connected with the touch control unit. Further, the PC control unit may be connected to a display unit, which may be a display screen disposed right in front of the body 1, and a touch screen disposed on an upper side of the display screen.

In the embodiment of the utility model, the clamping structure of the carrier 2 is controlled by the control handle 3, and the cover plate 5, the base plate 6 and the clamping structure of the carrier 2 are coaxially arranged, so that the clamping hole of the clamping structure can be in a vertical state, and the posture of the object to be detected (filter stick) during insertion is in a vertical state, so that the object to be detected (filter stick) becomes detection quantification.

Specifically, the carrier 2 further includes a side plate 21 surrounding the substrate 6 to form a circular wall; meanwhile, a rotation notch can be reserved in the rotation range corresponding to the control handle 3.

The center positions of the cover plate 5 and the base plate 6 can be provided with holes with certain sizes, so that when the clamping aperture of the clamping structure is changed, the cover plate 5 and the base plate 6 can always allow the filter stick to pass through, and clamping of the filter stick are carried out in the clamping structure.

The cover plate 5 comprises an upper plate 51, the center of the upper plate 51 is provided with an inlet 511, and the periphery of the upper plate can be provided with a decorative surrounding hole 512 for viewing. The inlet 511 is just opposite to the clamping hole. The upper plate 51 covers the side plate 21 which is annularly surrounded, the upper plate 51 can be provided with two limiting columns 52 and two fixing columns 53 downwards, one limiting column 52 is arranged to form a fixed connection effect with the base plate 6, and meanwhile, the limiting column 52 can be used for stopping the rotation of the control handle 3 and limiting the rotation range of the handle 32.

In the embodiment of the utility model, the clamping structure is formed by combining a plurality of clamping pieces 4, as shown in fig. 5, the aperture of the clamping hole is adjusted by matching the substrate 6 with the control handle 3, and the peripheral structure of the clamping hole is shielded, so that the clamping structure can shield external stray light while clamping and clamping are realized, and the effect of a light shield is realized, namely, only the clamping hole with good light transmittance is required to be formed in the process of adjusting the aperture of the clamping hole by the clamping structure so as to clamp a filter stick.

It can be understood that after clamping of the filter stick is completed, the light transmittance of the clamping hole is completely covered by the filter stick, the whole clamping structure does not have good light transmittance, external stray light can be effectively shielded, and meanwhile, detection of the filter stick is not affected.

In the embodiment of the present invention, referring to fig. 8, the clamping member 4 includes an upper angle plate 41, a lower angle plate 42, and a connecting portion 43, wherein the connecting portion 43 is vertically disposed between the upper angle plate 41 and the lower angle plate 42, and the angles of the top angles of the upper angle plate 41 and the lower angle plate 42 are the same; the lower angle plate 42 is provided with a limiting block 9 at the outer side of the bottom surface, and the lower angle plate 42 is provided with a driving block 8 at the outer side of the front surface.

The upper corner plate 41 and the lower corner plate 42 are parallel to each other, the area of the upper corner plate 41 is smaller than that of the lower corner plate 42, the top angle of the upper corner plate 41 can correspond to the top angle of the lower corner plate 42, and two side edges of the top angle are flush.

Referring to fig. 5, a plurality of clamping members 4 are circumferentially distributed and are sequentially abutted with two sides of a vertex angle to form a clamping structure, so that the clamping structure is sequentially divided into an upper layer angle plate, a connecting structure and a lower layer angle plate from top to bottom.

Based on the basic structure of the clamping member 4, a circular hole may be formed in the central position of the substrate 6 of the carrier 2 corresponding to the collecting channel, and a plurality of limiting holes 62 are radially formed and circumferentially distributed around the circular hole. When the clamping structure is installed on the base plate 6, the plurality of limiting blocks 9 below the lower corner plate can be inserted into the plurality of limiting holes 62 on the base plate 6 in a one-to-one correspondence manner, so that a single clamping piece 4 can only displace along the direction of the limiting holes 62.

In the embodiment of the utility model, the aperture size of the clamping structure is adjusted by the rotation of the control handle 3. The control handle 3 comprises a support plate 31 and a rotating shaft 33, a central hole 34 is formed in the center of the support plate 31, the plurality of driving holes 7 are circumferentially distributed by taking the central hole 34 as a circle center, and the size of the central hole 34 can be preset according to the aperture moving range of the clamping structure, so that the adjustment requirement is met. When the support plate 31 is sleeved on the connecting structure of the clamping structure, the plurality of driving blocks 8 above the lower corner plate can be inserted into the respective driving holes 7 on the substrate 6 in a one-to-one correspondence manner, so that the driving of the clamping members 4 can be linked in a unified manner.

Furthermore, the direction of the driving hole 7 corresponding to the same clamping piece 4 is different from the direction of the limiting hole 62; the included angle between the direction of the driving hole 7 corresponding to any clamping piece 4 and the direction of the limiting hole 62 is the same.

Each clamping piece 4 in the clamping structure is limited by the control handle 3 and the substrate 6, so that when any one of the clamping pieces 4 is driven to displace, the rest clamping pieces 4 can be linked to synchronously realize displacement, the direction of displacement is limited by the trend of the limiting hole 62, the control handle 3 drives the clamping structure to rotate, and the driving hole 7 which is obliquely arranged relative to the limiting hole 62 can realize the driving of the clamping piece 4 during rotation.

When the control handle 3 is rotated, the center positions of the plurality of clamping pieces 4 can form clamping holes with adjustable apertures, and the periphery of each clamping hole is always shielded by the upper-layer angle plate or the lower-layer angle plate.

Further, the connecting portions 43 can be arranged on the side edges of the vertex angles and flush with the short side edges, so that the whole shading effect of the clamping holes is guaranteed. It will be appreciated that the size of the circular hole in the base 6 and the entrance 511 in the upper plate 51 are based on the shielding effect of the lower and upper gussets.

It should be clear that, when the lever 3 is rotated, it should be rotated about the clamping hole as the axis, so that a plurality of arc-shaped rotating holes 61 can be provided on the substrate 6, located in the outermost region of the substrate 6, without interfering with the clamping structure in the central region; correspondingly, a plurality of rotation shafts 33 may be disposed at the outer edge of carrier plate 31 to cooperate with rotation holes 61, so that carrier plate 31 can rotate around the circular hole of substrate 6.

Further, the handle 32 can be disposed by selecting the spacing area of the rotating shaft 33, so that the handle 32 can extend outward to the annular side plate 21, and the manual control operation can be conveniently performed by external workers.

It should be clear that, when in a standing state, clamping and chucking of the filter stick can be realized based on the friction force between the clamping structure and the control handle 3 and the base plate 6, and the elasticity of the filter stick is negligible; therefore, the corresponding gripping driving force stabilizing function can be abandoned.

It should be clear that when the centre gripping hole of carrier 2 is adjusted through control handle 3, can realize centre gripping, chucking to the filter rod for the filter rod can enter into collection passageway along vertical centre gripping hole, guarantees that the gesture of filter rod is stable.

Based on the diameter parameters of the filter stick in the actual production process, the clamping size of the clamping structure in the carrier 2 can be limited, for example, the circumferential diameter of the filter stick is less than 15mm, and the length is more than 10 mm.

It should be clear that the size of the clamping hole of the clamping structure of the utility model is adjustable, and the clamping and clamping standing effects can be realized for filter rods with different circumferences, so as to ensure the posture stability of the filter rods during the spectral information acquisition, ensure that incident light can stably irradiate on a filter rod sample to be detected, and reduce the error during the spectral information acquisition of the filter rod sample.

In an embodiment of the present invention, the spectrum collection module may be a near infrared spectrometer, such as DLP2010NIR produced by texas instruments, the detector of the spectrum module may be a DLP micromirror array, the diffuse reflection light collection system may be an integrating sphere, and the light source may be a halogen lamp. The filter stick sample is vertically placed on a light source for detection by adopting a near infrared spectrum measuring mode of diffuse reflection, a detection port emits incident light towards the filter stick sample, and in the diffuse reflection process, the analysis light and the internal action of the sample are reflected and scattered. And (3) diffuse reflection, wherein the light propagation direction is changed continuously, the light carrying the sample information is finally reflected out of the surface of the sample, and the light is finally detected after being processed by modules such as a light splitter and the like.

The PC control unit can be a raspberry type microcomputer, the type can be ras pberry pi 4B, the spectrum data and the filter stick triacetin model are stored, and the triacetin content of the filter stick sample to be detected is obtained through calculation. The power supply can be a lithium battery, the battery capacity can be 6400mA, and the power supply can provide electric energy for the light source and the PC control unit.

When the filter stick detector is used, the light chopper (clamping structure) is opened, a filter stick sample to be detected is placed in the carrier 2, and the aperture of the light chopper is adjusted to ensure that the filter stick is clamped and kept stable, so that the filter stick can be irradiated by a light source. The light source emits incident light towards the filter stick sample, in the diffuse reflection process, the analysis light and the surface or internal action of the sample are analyzed, reflection, scattering and diffuse reflection are generated, the light propagation direction is changed continuously, finally the sample information is carried and the sample surface is reflected, and the collected spectral data is calculated through the embedded prediction model through the PC control unit to obtain the content of the triacetyl glycerine of the filter stick.

Further, the steps of detecting the sample by adopting the near-infrared detector of the utility model are as follows:

(1) and turning on a power switch of the detector, and turning on the spectrum acquisition and prediction software.

(2) The apparatus is preheated for 1 to 2 minutes.

(3) Setting parameters (main spectrum wavelength range, integration time, resolution, average scanning times and a prediction model), placing a customized standard filter stick white board at a light hole for collecting a reference spectrum, and then collecting a near infrared spectrum of the filter stick. The near infrared spectrum acquisition mode adopts a diffuse reflection mode, the spectrum range is 900nm-1700nm, the spectrum resolution is 5.85 nm, the number of scanning points is 225, each sample spectrum is scanned for six times, and the average value of the six spectra is taken as the final spectrum.

(4) After the spectrum collection is finished, clicking a prediction button of the software, and obtaining the content of triacetyl glycerine of the filter stick in site within 15 seconds through the embedded spectrum prediction model

(5) The near-infrared detector disclosed by the utility model is used for rapidly detecting the content of the triacetin in 20 filter stick samples on site, and is detected and verified with a measured value measured by 'determination of the triacetin in the acetate fiber filter stick-gas chromatography', the experimental result shows that the average absolute error of 20 samples is 0.0935%, the average relative error is 1.35%, and the detection result shows that the near-infrared spectrum detector disclosed by the utility model has better detection accuracy on the content of the triacetin in the filter sticks, and the detector disclosed by the utility model can be applied to a workshop site and has outstanding advantages.

The specific prediction results are shown in the following figure:

it is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The foregoing is a more detailed description of the utility model in connection with specific preferred embodiments and it is not intended that the specific embodiments of the utility model be limited to these descriptions. For those skilled in the art to which the utility model pertains, several simple deductions or substitutions can be made without departing from the spirit of the utility model, and all shall be considered as belonging to the protection scope of the utility model.

Claims (10)

1. The filter stick detector based on the near infrared spectrum is characterized by comprising a machine body (1), a carrier (2) and a spectrum acquisition module, wherein the carrier (2) is externally arranged on the machine body (1), an acquisition channel is arranged between the carrier (2) and the machine body (1), and the spectrum acquisition module is arranged in the machine body (1) and can carry out spectrum acquisition on an object to be detected extending out of the acquisition channel; the carrier (2) is right opposite to the acquisition channel, a clamping structure is arranged on the acquisition channel, so that a clamping hole of the clamping structure can be right opposite to the acquisition channel, the clamping structure can clamp an object to be detected entering the acquisition channel from the carrier (2), and the posture of the object to be detected in the spectrum acquisition process is stabilized.

2. The filter stick detector based on the near infrared spectrum according to claim 1, wherein the machine body (1) further comprises a power module and a control processing module, wherein the power module comprises a power supply unit, a display unit and a power management unit; the control processing module comprises a circuit board, a PC control unit and a touch control unit.

3. The filter stick detector based on the near infrared spectrum according to claim 2, further comprising a light source module, wherein the light source module comprises a halogen lamp bead; the PC control unit is connected with the halogen lamp beads through a circuit board, the spectrum acquisition module is connected with the PC control unit, and the PC control unit is connected with the touch control unit.

4. A filter rod maker according to claim 1, further comprising a clamp (4), wherein the clamp (4) comprises an upper corner plate (41), a lower corner plate (42) and a connecting portion (43), the connecting portion (43) is vertically arranged between the upper corner plate (41) and the lower corner plate (42), and the angles of the top corners of the upper corner plate (41) and the lower corner plate (42) are the same; the lower angle plate (42) is provided with a limiting block (9) at the position of the outer side edge of the bottom surface, and the lower angle plate (42) is provided with a driving block (8) at the position of the outer side edge of the front surface.

5. The filter stick detector based on the near infrared spectrum according to claim 4, wherein a plurality of clamping pieces (4) are circumferentially distributed and are sequentially attached and butted at two side edges of a vertex angle to form the clamping structure, so that the clamping structure is sequentially divided into an upper layer corner plate, a connecting structure and a lower layer corner plate from top to bottom.

6. The filter stick detector based on the near infrared spectrum according to claim 5, wherein the carrier (2) further comprises a substrate (6), a circular hole is formed in the center of the substrate (6) corresponding to the collection channel, a plurality of limiting holes (62) are distributed circumferentially along the radial direction with the circular hole as the center of a circle, and the limiting blocks (9) on the lower layer corner plate can be inserted into the limiting holes (62) on the substrate (6) in a one-to-one correspondence manner, so that the substrate (6) can limit the displacement direction of the lower layer corner plate.

7. The filter stick detector based on the near infrared spectrum according to claim 6, wherein the carrier (2) further comprises a control handle (3), the control handle (3) comprises a support plate (31) and a rotating shaft (33), a central hole (34) is formed in the center of the support plate (31), and a plurality of driving holes (7) are circumferentially distributed by taking the central hole (34) as a circle center, so that when the support plate (31) is sleeved on the connecting structure of the clamping structure, the driving blocks (8) on the corner plate at the lower layer can be inserted into the driving holes (7) on the support plate (31) in a one-to-one correspondence manner; the outer edge of the carrier plate (31) is provided with a plurality of rotating shafts (33), and the base plate (6) is correspondingly provided with a plurality of rotating holes (61), so that the carrier plate (31) can rotate by taking the round hole of the base plate (6) as a center.

8. A filter rod detector according to claim 7, wherein the control handle (3) further comprises a handle (32), the carrier (2) further comprises a side plate (21), the side plate (21) is arranged on the base plate (6) in a surrounding manner to form a ring wall and is provided with a rotation notch, and the support plate (31) extends out of the handle (32) from the rotation notch.

9. A filter rod detector according to claim 8, wherein the drive holes (7) and the limit holes (62) of the same clamp (4) are oriented in different directions; the included angle between the direction of the driving hole (7) corresponding to any clamping piece (4) and the direction of the limiting hole (62) is the same; the handle (32) is rotated, so that the center positions of the clamping pieces (4) can form the clamping holes with adjustable hole diameters, the periphery of each clamping hole is always shielded by the clamping pieces (4), and the clamping structure only has the light transmission property of the clamping holes.

10. A filter stick detector based on near infrared spectrum according to claim 8, characterized in that the carrier (2) further comprises a cover plate (5), an inlet (511) is arranged at the center of the upper plywood (51) of the cover plate (5), and the inlet (511) is opposite to the clamping hole; the upper plywood (51) covers the side plates (21), the upper plywood (51) is provided with a limiting column (52) and a fixing column (53) downwards, the limiting column (52) is fixedly connected with the base plate (6), and the limiting column (52) is used for stopping the rotation of the handle (32).

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