CN201888248U - Netlike groove intercepting filter tip - Google Patents

Abstract

The utility model provides a netlike groove intercepting filter tip. The netlike groove intercepting filter tip consists of a filament bundle core bar (1) and formed paper (6) wrapped on the outer layer; an inner paper layer (2) for wrapping the filament bundle core bar is arranged between the filament bundle core bar and the formed paper; inwards sunken transverse grooves (3) staggered with netlike (brick wall type) structures are formed on the inner paper layer (2); and series pores (4) are distributed on two sides of the grooves. The netlike groove intercepting filter tip has the advantages that: the grooves compress the filament bundle core bar to the center, so the center density is increased, and a part of smoke is compelled to flow through the pores and enter the transverse grooves; and because the space is abruptly enlarged, the transverse grooves play a role of a cold well, and a part of smoke is condensed. By repeated compression of the multiple grooves and repeated access of the smoke from the pores, the flow path of the smoke is of waveform, and the flow path and the time are prolonged; and the smoke is repeatedly acted by coke reducing mechanisms of 'diffusion deposition', 'dense flow', 'pore amplification' and the like, so particles in the smoke are greatly intercepted.

Description

A kind of netted groove trapping filter rod

Technical field

The utility model relates to tobacco product, particularly a kind of filter fibrous type mouth rod of cigarette.

Background technology

The mechanism that fibrous type mouth rod is removed particle matter in the flue gas is exactly that mechanicalness is filtered, and its filter efficiency is relevant with size (quality and diameter), the movement velocity of particulate, the diffusion (distribution situation and the time of staying) of particulate in filament of particulate in the flue gas.Because particulate passes through the time very short (0.04 second) of mouth rod, the diameter of particulate very little (0.2 micron), and filametntary diameter (20 microns) is bigger 100 times than the diameter of particulate.Therefore, the fiber of mouth rod mechanical filter (holding back) rate that particulate is caused is very little.

It is exactly to make particulate continuous and fiber collision in flow path that fibrous type mouth rod mechanicalness is filtered, and forms inertia impact.Because the quality of the movement velocity of particulate and particulate is all little, the momentum that motion produces just can not be big, and therefore, inertia impact is to the contribution of cigarette filter tip efficient also very little (account for total clearance 2%).

The disordered motion of particulate causes that the collision with fiber promptly forms the diffusion deposition.Studies show that the motion of low quality particulate is more more than high-quality person, the mistakes rate effect that when low flow velocity, causes because of diffusion just generally, this has been the time lengthening that stops in filter tip owing to particulate, makes particulate have more opportunity and spreads in filament.The particle removal that is caused by the diffusion deposition accounts for 65% of total clearance.

When particulate very closely flows through fiber and collides with it direct interception function will take place, this mechanism is relevant with the size of particulate, and irrelevant with the flow velocity of particulate.This particulate of being removed by direct interception function accounts for the 30%-35% of total clearance greatly.

At present, cigarette props up generally to adopt and installs fibrous type mouth rod additional and alleviate the harm of smoking to human body, and the tow in the conventional fibre type mouth rod generally all is that straight bundle distributes, owing to added glue and the influence that rolls the process mechanism characteristic, it is uneven that the resistance to suction of filter tip distributes, and generally is that the center is little, big on every side.Therefore, flue gas mostly flows along the center of filter tip in filter tip fast, seldom to around diffusion, the mechanicalness filtering effect of tow occurs in the central area of filter tip substantially, the mechanicalness filter efficiency of tow is because of the smoke distribution inequality, and has a greatly reduced quality.Hold back efficient to satisfy the requirement of people for what improve fibrous type mouth rod, satisfy people again to the smoking demand simultaneously, must change original filter fibrous type mouth bar structure, reduce harmful ingredients in flue gas better and reduce tar content to reach to health.

The utility model content

The purpose of this utility model is exactly to hold back the not high defective of efficient for what overcome that existing fiber mouth rod exists, carries out architecture advances, to improve the hold back efficient of fibrous type mouth rod to flue gas.

To achieve these goals, the utility model has adopted following technical proposals:

A kind of netted groove trapping filter rod, it is made up of the forming paper of stranded core rod and outer parcel, it is characterized in that being provided with between stranded core rod and the forming paper internal layer paper of one deck parcel stranded core rod, internal layer paper is provided with along the staggered lateral trench that is close to towards each other in stranded core rod week, and the two sides of each lateral trench and both ends of the surface are respectively equipped with one group of aperture.The little hole number of the two sides of lateral trench is 1-500 scope again, and the little hole number of the both ends of the surface of lateral trench is 1-50 scope again, and small aperture is 0.01-1.0MM.

On the basis of technique scheme, following further technical scheme can be arranged:

Described lateral trench is the staggered network structure of brickwall.The longitudinal cross-section shape of groove can be trapezoidal, rectangle, circle or V-arrangement.

After the internal layer paper bag is wrapped up in stranded core rod, promptly formed the groove suitable mutually on the stranded core rod with internal layer paper.Internal layer paper is tobacco business cellulose paper commonly used, also can be the cigarette paper of other type, and the trench cross-section shape can be V-arrangement, rectangle, trapezoidal, semicircle and other shape.

Internal layer paper enters opium pipe synchronously with outer paper after being pressed into required groove by indent mechanism, stranded core rod is rolled into filter fibrous type mouth rod, because the effect of plasticizer triacetyl glycerine is arranged in the stranded core rod, make tow by the moulding of internal layer paper shape, form concaveconvex structure between stranded core rod and internal layer paper and the outer paper simultaneously, small aperture on its groove two sides is 0.01-1.0MM, flue gas enters groove through aperture, be horizontally through the cavity of groove, aperture through opposite side flows in the fibre bundle again, constantly continues such process repeatedly.Flue gas flows through aperture each time, all is subjected to the machining function of " hydrodynamics aperture amplification principle ", and is disperseed and cool off, the flue gas granule phase substance that is cooled be deposited in the groove respectively and fibre bundle in, and held back by filter tip.Because there is certain temperature difference the temperature of the cavity of groove and filter tip inside, the cavity of groove is just as " cold well ", and the flue gas of flowing through can partly be cooled, and is deposited in the groove.Flue gas flowing through in filter tip is the type of cleaving.With yew paper excellent the propping up with cigarette of above-mentioned fibrous type mouth sticked to one, efficiently hold back cigarette comprehensively thereby form unitary whole.

Advantage of the present utility model is:

1, flue gas always flows to the little zone of resistance, because groove inwardly pushes stranded core rod, its density is increased, and flue gas passes aperture naturally and flows in the little groove of resistance.And constantly repeatedly by such path flow, form the type flue gas that cleaves and flow through.

2, flue gas is through the aperture drainage, constantly shuttles back and forth in fibre bundle and in the cavity of groove, and constantly spread and gather.Flue gas quilt each time spreads and gathers, and all is subjected to " diffusion deposition " and " intensive flowing " machine-processed effect and is held back by filter tip.

The application of 3 aperture amplification principles has been created a brand-new fibrous type filter tip and has been fallen burnt mechanism, falls burnt machine-processed use in conjunction with " diffusion deposition " and " intensive flowing " two, can improve the burnt efficient of falling of fibrous type filter tip to greatest extent.The application of fluid dynamic " aperture amplification principle " (air-flow is fan-shaped amplification when flowing out aperture) in filter tip, effectively little, the high volatility of the molecular weight in the cooled flue gas granule phase substance, harmful component cpd.Therefore present technique has tangible reducing poison function again.

Groove is like " cold well " (groove and the filter tip center temperature difference are very big), and the flue gas granule phase substance that flows through groove can be deposited by " cold well " condensation.Reduced and flowed into the maximum exhaust gas volumn of fiber again.Therefore groove also can be referred to as the new burnt mechanism of falling---" burnt mechanism falls in cold well ".

Therefore, the utility model patent develops and has innovated the lowering harm and decreasing coking mechanism of fibrous type filter tip.

4, by all kinds of resistance to suction pressure reduction zone is set in filter tip, burnt mechanism falls in the laying of science " diffusion deposition " and " intensive flowing ", utilize " aperture " to be connected in series each resistance to suction pressure reduction zone cleverly, the guiding flue gas flows by design path, allows unordered flue gas accept to fall the effect of burnt mechanism in an orderly manner, repeatedly.The flow process of flue gas is extended simultaneously, and the time of flowing through filter tip is delayed, and realizes diffusion, the distribution of the fullest of flue gas in filter tip.

5, road number, the depth, the width of groove, groove series connection hop count, the distribution situations of the size of small aperture, the number of aperture, aperture etc. become the design considerations of fibrous type filter tip lowering harm and decreasing coking efficient.Use multifactor optimal design means, can be organically, the technical characteristic and the parameter of the design filter tip of science, thus satisfy the desirability of kinds of cigarettes to greatest extent, more efficiently to lowering harm and decreasing coking.

6, " aperture " on the internal layer forming paper can " off-line ", also can adopt online mode of adopting laser, static or mechanical punching to make.

For the utility model is described in further detail, following accompanying drawing provides a most preferred embodiment.

Description of drawings:

Fig. 1 is a front view of the present utility model;

Fig. 2 is the A-A cutaway view of Fig. 1;

Fig. 3 is the I portion enlarged drawing of Fig. 1.

The specific embodiment:

As shown in Figure 1 and Figure 2, a kind of netted groove trapping filter rod that the utility model provides, it is made up of the forming paper 6 of stranded core rod 1 and outer parcel, be provided with the internal layer paper 2 of one deck parcel stranded core rod between stranded core rod and the forming paper, internal layer paper 2 is provided with the staggered lateral trench 3 that is close to each other along stranded core rod, be that lateral trench is staggered network structure, be respectively equipped with one group of 500 aperture 4 on the two sides of each lateral trench, small aperture is 0.01-1.0MM.The cross sectional shape of lateral trench can also can be a V-type for semicircle or U type.By Fig. 1, Fig. 2 as can be seen, be close to the vertical convex tendon 5 of formation between the adjacent lateral trench 3 along the stranded core rod circumferential array.

As shown in Figure 3, be close to the horizontal convex tendon 7 of formation between the adjacent lateral trench 3 along the stranded core rod axially-aligned, convex tendon 7 two sides (being the two sides of lateral trench) are gone up and are distributed by aperture 4, lateral trench compresses stranded core rod to the center, center density is increased, force partial fume to flow through aperture 4 and enter lateral trench, because amplify suddenly in the space, lateral trench plays the effect of cold well, and partial fume is condensed.Through too much lateral trench and aperture, the particulate in the flue gas is held back significantly so repeatedly.

Claims (2)

1. netted groove trapping filter rod, it is made up of the forming paper (6) of stranded core rod (1) and outer parcel, it is characterized in that: the internal layer paper (2) that is provided with one deck parcel stranded core rod between stranded core rod and the forming paper, internal layer paper (2) is provided with along the staggered lateral trench (3) that is close to towards each other in stranded core rod week, and the two sides of each lateral trench and both ends of the surface are respectively equipped with one group of aperture (4).

2. a kind of netted groove trapping filter rod according to claim 1 is characterized in that: described lateral trench is staggered network structure.

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