CN201854665U - Externally-buried ball-type interception filter tip - Google Patents

Abstract

The utility model provides an externally-buried ball-type interception filter tip which consists of a tow core rod (1) and externally-wrapped wrap paper (4). One to twenty core ball groups are arranged on the circumference of the tow core rod and are wrapped on the tow core rod by the wrap paper (4). Each core ball group consists of a plurality of strings of core balls (2) which are circumferentially arranged on the tow core rod. A group of small holes (3) is evenly distributed on the surface of each core ball (2). The diameter of the small hole is 0.01 to 1.0mm. The externally-buried ball-type interception filter tip has the advantages that since the core balls compress the tow core rod towards the center, the center density is increased and partial smoke is forced to flow through the small holes and enters longitudinal core balls; since the space is suddenly expanded, the longitudinal core balls have a function of a cold well and partial smoke is condensed; and after the smoke repetitively flows through the longitudinal core balls and the small holes, particles in the smoke are greatly intercepted.

Description

A kind of outer buried ball-type blocking 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 outer buried ball-type blocking filter rod, it is made up of the forming paper of stranded core rod and outer parcel, it is characterized in that: on the stranded core rod circumference, be laid with the hollow core ball of holding back flue gas, by forming paper each core bag is wrapped up in and is embedded in the stranded core rod, be laid with one group of aperture on the surface of each core ball respectively.

The core ball can carry out equidistantly or be not equidistant regularly arranged, also can carry out non-regularly arranged.Core ball body quantity and arranging density can be according to falling burnt condition setting.Small aperture can be between 0.01-1.0MM.

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

Described core ball is to have the entity ball that highly-breathable, high adsorption material are made, and has the micropore of absorption flue gas in the entity ball.

Advantage of the present utility model is:

1, because the core ball inwardly pushes stranded core rod, its density is increased, at first increased the efficient of vertically holding back; Other has partial fume to enter the core ball by aperture, and then returns stranded core rod by aperture, and this has just utilized the aperture amplification principle, has increased the process that twice condensation held back and filtered.

2, because the flue gas aerosol particle behind aperture increases, form " cold well " phenomenon, condensation aerosol improves deposition efficiency.Therefore little molecule volatile ingredient ability is strengthened, can improve the cigarette quality greatly, reduce bad breath.

3, because the effect of aperture descends the fibrous type nozzle rod sucting resistance, change traditional fibre type mouth rod rejection and become positively related unfavorable mode with resistance to suction, and can be by the quantity or the small aperture regulation and control resistance to suction of aperture.

4, change flue gas conventional flow path in filter tip, change the straight line form of tow, the more collision of high probability takes place in tow and aerosol particles with tracing pattern, consume the kinetic energy of particulate, it is more stayed, thus path, the time of passing through and mobile speed that prolong smoke flows in filter tip;

5, change the distribution situation of flue gas in filter tip, thereby make the probability that flue gas distributes comprehensively, fully diffusion improves smoke particles and tow lateral impact in filter tip; The 3rd, the intensive flow region of flue gas is set, force flue gas crowded mobile, thereby produce directly interception effect.

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;

Fig. 4 is the cutaway view of entity ball described in the utility model.

The specific embodiment:

As shown in Figure 1 and Figure 2, a kind of outer buried ball-type blocking filter rod that the utility model provides, it is made up of the forming paper 4 of stranded core rod 1 and outer parcel, on the circumference of stranded core rod, be provided with four road core ball groups, by forming paper 4 their are wrapped up and are embedded on the stranded core rod, per pass core ball group is made up of along the core ball 2 that stranded core rod circumferentially is provided with 12 strings.

As shown in Figure 3, each core ball 2 is hollow, is respectively equipped with uniform one group of aperture 3 on its surface, and the small-bore is 0.01-1.0MM.

The core ball compresses stranded core rod to the center, and center density is increased, and forces partial fume to flow through aperture and enters vertical core ball, because amplify suddenly in the space, vertically the core ball plays the effect of cold well, and partial fume is condensed.Pass through vertical core ball of multiple tracks and aperture so repeatedly, the particulate in the flue gas is held back significantly.

Embodiment two:

Vertical ball core 3 among Fig. 3, the entity ball 2a that can adopt active carbon with highly-breathable, high adsorption or nano material to make has the micropore 3a of absorption flue gas in the entity ball, can reach the purpose of holding back flue gas equally.

Claims (2)

1. outer buried ball-type blocking filter rod, it is made up of the forming paper (4) of stranded core rod (1) and outer parcel, it is characterized in that: on the stranded core rod circumference, be laid with the core ball (2) of holding back flue gas, by forming paper (4) each core ball (2) is wrapped on the stranded core rod, is laid with one group of aperture (3) on the surface of each core ball (2) respectively.

2. a kind of outer buried ball-type blocking filter rod according to claim 1 is characterized in that: described core ball is to have the entity ball (2a) that highly-breathable, high adsorption material are made.

Images