CN201774961U - String-type groove trapping filter tip - Google Patents

Abstract

The utility model provides a string-type groove trapping filter tip, which consists of a tow core rod (1) and wrap paper (6) coated outside. A layer of inner paper (2) coated on the tow core rod is arranged between the tow core rod and the wrap paper. The inner paper (2) is provided with 1 to 10 sections of groove groups. Each section of groove groups consists of 1 to 50 longitudinal grooves (4) which are arranged along the circumferential direction of the tow core rod. Dense small drainage holes are distributed on both end faces and both walls of the longitudinal grooves. The longitudinal grooves are sunken into tows, compress the tow core rod, make the center density increased and force part of smoke to enter the longitudinal grooves with lower suction resistance through the small drainage holes, flow into the grooves from fibers of the filter tip repeatedly, then flow into the fibers from the grooves, repeat the process again and again and be continuously acted on by tar reduction mechanisms such as diffusion deposition, dense flowing, small hole amplification and the like so as to furthest take the comprehensive effects of reducing tar and reducing damage of the fiber filter tip.

Description

A kind of string data groove trapping filter rod

Technical field

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

Background technology

The mechanism that fibrous type mouth rod is removed granule phase substance 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 " diffusion deposition " accounts for 65% of total clearance.

When particulate very closely (intensive flowing) flow through fiber and collide with it direct interception function will take place, this mechanism is relevant with the size of particulate, and has nothing to do 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, fiber mouth rod is carried 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 string data 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 1-10 section groups of slots, the per pass groups of slots being made up of the longitudinal groove that circumferentially is provided with along stranded core rod more than three, and two end faces and groove two walls of each longitudinal groove are distinguished densely distributed drainage aperture.

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

The longitudinal cross-section shape of described longitudinal 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 longitudinal 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 groove vertical sectional shape can be V-arrangement, rectangle, trapezoidal, semicircle and other shape.They carry out equidistantly or not equidistant arrangement.Generally in 1-50 scope, concrete quantity can be according to falling burnt condition setting for the quantity of the longitudinal groove in every section groups of slots.The little hole number of drainage that is provided with respectively on two walls of longitudinal groove is that the little hole number of drainage that 1-500, two end faces are provided with respectively is 1-50, and the aperture is in the 0.01-1.0MM scope.

Internal layer paper enters opium pipe synchronously with outer paper after being pressed into required groove by indent mechanism, and 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, makes tow by the moulding of internal layer paper shape.Form the groove space structure of segmentation between internal layer paper and the outer paper, drainage aperture on its groove two ends and the two sides is 0.01-1.0MM, guided by resistance to suction, flue gas enters groove through the drainage aperture, flow into the fiber of filter tip from groove again, repeatedly repeatedly, the flue gas granule phase substance is subjected to " diffusion deposition ", " intensive flowing ", " amplifications of drainage aperture " three held back machine-processed effect greatly and constantly be deposited repeatedly.What be worth emphasizing is after the flue gas granule phase substance is subjected to the effect of drainage aperture amplification mechanism, to be subjected to cooling to a certain degree, particle increases, flow velocity can obviously reduce, and easier quilt when flue gas enters the drainage aperture again " intensive flowing " mechanism is held back, and holds back efficient thereby amplify once again.

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:

The application of 1 drainage aperture amplification principle 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 " drainage aperture amplification principle " (air-flow is fan-shaped amplification when flowing out the drainage 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.

2, 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 " drainage 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.

3, road number, the depth, the width of groove, groove series connection hop count, the number of the size of drainage small aperture, drainage aperture, the distribution situation of drainage 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.

4, " the drainage 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 string data 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 3 sections groups of slots, the per pass groups of slots is made up of 16 longitudinal grooves 4 that circumferentially are provided with along stranded core rod, be respectively equipped with 1-50 drainage aperture 3 on the both ends of the surface of each longitudinal groove, the aperture is 0.01-1.0MM, and the shape of cross section of longitudinal groove is the U grooved.Be respectively equipped with one group of drainage aperture 5 on longitudinal groove two walls, every group of little hole number of drainage is 1-500, and the aperture is in the 0.01-1.0MM scope.

Drainage aperture 3 on longitudinal groove 4 and the both ends of the surface as shown in Figure 3, longitudinal groove compresses stranded core rod to the center, and center density is increased, force partial fume to flow through the drainage aperture and enter longitudinal groove, because amplify suddenly in the space, longitudinal groove plays the effect of cold well, and partial fume is condensed.So pass through the longitudinal groove 2 and the drainage aperture 3 of multiple tracks short-circuited conducting sleeve repeatedly, the particulate in the flue gas is held back significantly.

Claims (1)

1. string data 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 being provided with between stranded core rod (1) and the forming paper (6) the internal layer paper (2) of one deck parcel stranded core rod, internal layer paper (2) is provided with 1-10 section groups of slots, every section groups of slots is made up of the plural longitudinal groove (4) that vertically is provided with along stranded core rod, and two end faces of each longitudinal groove and groove two walls are respectively equipped with the drainage aperture of one group of dense distribution.

Images